Academic literature on the topic 'Cool storage'

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Journal articles on the topic "Cool storage"

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Abraham, M. M., K. Annamalai, and D. E. Claridge. "Optimization of the Storage Process for a Cool Thermal Storage System." Journal of Energy Resources Technology 119, no. 4 (December 1, 1997): 236–41. http://dx.doi.org/10.1115/1.2794996.

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The storage process for a static-water ice-on-coil cool thermal storage system is difficult to model analytically, based on the dynamic behavior of ice production. Systems that utilize a vapor-compression cycle, with the tank acting as an evaporator, further complicate an analytical model due to the two-phase heat transfer throughout the storage tank. This analysis presents a simplified model of the storage process for a static-water ice-on-coil storage tank acting as an evaporator in a vapor-compression cycle. Specifically, the storage process is optimized by minimizing the amount of compressor work required to freeze water at 0°C. Optimization variables are refrigerant evaporating temperatures and tank heat exchanger sizing. The dynamics office production and two-phase heat transfer are simplified by assuming the overall heat transfer coefficient remains constant throughout the storage process. An average value for the overall heat transfer coefficient may be substituted and still provide useful results. A second law analysis utilizing the irreversibility developed during cool storage is also presented. The model is then used in side-by-side comparisons of compressor work, tank heat exchanger efficiency, and irreversibility, as functions of evaporating temperature, for several heat exchanger sizes.
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Zheng, Guozhong, and Youyin Jing. "Air Conditioning: Selecting the Optimal Cool Storage System." Energy & Environment 18, no. 2 (March 2007): 251–57. http://dx.doi.org/10.1177/0958305x0701800205.

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The present paper introduces the notion of cool storage system and summarizes its benefits, especially the environmental ones: air emissions savings and CFC reductions. Four existing cool storage types are outlined: chilled water storage, ice storage, PCM (phase change material) cool storage and high temperature water cool storage and a commonly employed value analysis method is introduced and applied to select the best cool storage option. An evaluating method is established and the best type of cool storage is obtained. The results indicate that high temperature water cool storage is the optimal option, and the method of value analysis has applicability in selecting an optimal system.
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Zhou, Dong Yi, Chu Ping Shi, and Wen Hua Yuan. "Applied Research of Cool Storage and Energy Conservation Technology on Cold Storage." Applied Mechanics and Materials 71-78 (July 2011): 4744–47. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4744.

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The feasibility of the application of cool storage technology in cold storage was discussed and the ice cool storage used in high temperature cold storage, condenser water, cooling room, frozen food store and freezing room was analyzed. Carried on the efficient analysis through a cold storage of Hunan Shaoyang as an example, the result shows that the equipment cost of ice cool storage equipment is 831310.2 Yuan higher than the traditional cold storage and annual operating costs than traditional ice storage refrigeration technology can save 375694.5 Yuan. So it is feasible for the application of cool storage technology in cold storage. But initial investment will be increased inevitably and instead the additional capital can be recovered in about three years through the decrease of electricity consumption.
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Stattin, Eva, Claes Hellqvist, and Anders Lindström. "Storability and root freezing tolerance of Norway spruce (Picea abies) seedlings." Canadian Journal of Forest Research 30, no. 6 (June 1, 2000): 964–70. http://dx.doi.org/10.1139/x00-016.

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The objective of the study was to evaluate if root freezing tolerance and post-storage survival of Norway spruce (Picea abies (L.) Karst.) seedlings can be improved by cool storage prior to frozen storage. Four-year-old bare-root seedlings were lifted and put into cool or frozen storage at 2-week intervals from mid-September to mid-December. Length of cool (5.5°C) storage prior to frozen (-4.6°C) storage was 0, 2, 4, 6, 8, 10, or 12 weeks. Root freezing tolerance, determined directly by freezing-induced electrolyte leakage and indirectly by shoot and root dry matter content, were assessed at lifting and biweekly during cool storage. At these occasions, seedlings were also transferred from cool storage to frozen storage. Survival of the seedlings was assessed in a cultivation test in April. Root freezing tolerance increased for seedlings put into cool storage before November, whereas seedlings put into cool storage from November onwards did not increase in root freezing tolerance. Electrolyte leakage after root freezing to -5°C at the time of transfer to frozen storage correlated to post-storage survival of seedlings pretreated up to 6 weeks. Lifting for successful overwinter storage could be done up to 1 month earlier if seedlings were pretreated in cool storage 6 weeks before transfer to frozen storage.
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Ji, Chang Fa, Xin Yuan Yu, and Gang Liu. "A Study on the Cool Charge Characteristics of Ice Storage Plate Filled with Eutectic Salt." Applied Mechanics and Materials 716-717 (December 2014): 88–93. http://dx.doi.org/10.4028/www.scientific.net/amm.716-717.88.

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The electricity load imbalance between day and night of air conditioning greatly affect the power generation cost and safe operation of power grid. Because of the important role in balance the peak and night electricity load, the Cool storage technology more and more attention at home and abroad. A cool storage experimental apparatus with internal melt ice-on-coil was set up, and on which the heat-transfer characteristics have been determined. The experimental results show that:The inlet temperature of refrigerant,when entering the ice storage tank, has an larger influence on the process of cool storage than the flow amount of the cooling medium. It is found by analyzing the process of experiment about storage that the suitable outlet temperature of the cooling medium is 1°C while the flow amount of the cooling medium is 0.274 m3/h. The research results can provide help for the energy-saving design of air conditioning.
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Zou, Tong Hua, Qiao Di Hong, Xiao Yan Song, Chen Hao Li, and Bin Liu. "Study on the Performance of Cool Storage Material for Vaccine Transportation." Advanced Materials Research 734-737 (August 2013): 2509–13. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.2509.

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t is introduced about the characteristics, structure and application of refrigerator for vaccine transportation. From the test of thermophysical properties of cool storage material in cold closet using for vaccine transportation and the insulation performance of cold closet with different cool storage materials, it turned out that the thermophysical properties of the novel cool storage material is similar to the imported; the insulation performance of cold closet with the novel cool storage material is slightly less than the imported. Since this novel cool storage material can keep the temperature within 8°C for more than 80h, which totally satisfies the request of domestic vaccine transportation, it's worthy of promotion.
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Muthaiyan, Kesavan, Rajamani Narayanasamy, Chidambaram Lakshmanan, Pandiyarajan Vellaichamy, and Velraj Ramalingam. "Residential Air Conditioning System Integrated with Packed Bed Cool Storage Unit for Promoting Rooftop Solar PV Power Generation." International Journal of Renewable Energy Development 10, no. 2 (May 1, 2020): 239–47. http://dx.doi.org/10.14710/ijred.2021.33750.

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The increase in the share of renewable-based power in the gross power generation in most countries causes significant concerns over the addition of renewable power with the grid, results in stability issues in most developed nations. Energy storage is an emerging technology that is considered the ultimate solution in developing microgrids with distributed renewable power generation. The cool thermal storage plays a vital role in economically promoting renewable power among different storage units. The major objective of the research work is to demonstrate the integration of residential air-conditioning systems with packed bed cool storage units to promote rooftop solar power generation for residential space cooling applications. In order to achieve the said objective, an experimental investigation was made to study the charging/discharging characteristics of a packed bed cool-storage unit combined with a chiller and a cooling coil unit suitable for small capacity air-conditioning applications. The system consists of encapsulated spherical capsules filled with a phase change material blended with distilled water and pseudomonas (nucleating agent) and the heat transfer fluid as a combination of distilled water and Mono-ethylene glycol. A cooling coil unit was connected to the cool-storage tank to transfer cool energy from the storage tank to the space to be cooled when there is a demand. The important parameters, such as instantaneous and cumulative heat transfer during the charging/discharging processes, are presented. The average COP values of the chiller during the charging operation were estimated as 1, 0.93, and 0.89 when the HTF setpoint temperatures were -6°C, -9°C, and -12°C, which shows a decrease in performance as the setpoint temperature decreases. During the discharging process, a cooling load of 2.25 kW is obtained during the first cycle of operation and gradually reduces to 0.3 kW during the sixth cycle of operation. The increase in the HTF temperature during each cycle of operation indicates that the Phase Change Material (PCM) in the balls cannot release the heat as per the demand after a certain period of discharging. Hence, decreasing the internal thermal resistance by suitable measures is essential to achieve uniform heat flux and to operate the system successfully
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Li, Qi He, Xiao Bao Zhao, Hu Huang, Yu Zhou Cheng, and Yu Hua Liu. "A Multistage Cool Storage System of Natural Coldness Resource Based on Heat Pipe." Advanced Materials Research 512-515 (May 2012): 1097–101. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.1097.

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This article proposes a multistage cool storage system of natural coldness resource storage joint operation with refrigeration unit cool storage using heat pipe as heat transfer components. This system can realize both cold energy stored in winter used in summer which is called “Seasonal storage of cold energy” and cold energy stored at night used in the day which is called “cool storage day by day”. When the user needs cooling, it will choose different cycle way to release cold energy to the cooling user according to the temperature grade of the cool storage medium and the cooling load of the user. This system can achieve the purpose of energy conservation and environment protection.
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Li, Shidong, Caisong Mo, Junze Wang, Jingfu Zheng, and Ruhong Tian. "Experimental study on the cool storage performance of super absorbent polymers for cool storage clothes." IOP Conference Series: Earth and Environmental Science 94 (November 2017): 012108. http://dx.doi.org/10.1088/1755-1315/94/1/012108.

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Zhang, Hai Yan, and Xue Min Hu. "Preparation of Cool Wool Natural Energy Storage Material." Advanced Materials Research 1004-1005 (August 2014): 849–52. http://dx.doi.org/10.4028/www.scientific.net/amr.1004-1005.849.

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Preparing of cool wool natural energy storage materials from wool fiber is a feasible and effective method. The structure characteristics of wool and the reason that wool has cool properties were introduced. The preparation principle, preparation methods and properties of cool wool fiber was studied. The preparation methods of cool wool mainly include scale stripping and surface coating. Scale stripping mainly consists of Chlorination, oxidation, biological enzyme treatment and plasma treatment. Surface coating mainly consists of resin finishing and ceramic finishing. Slenderizing and adding energy storage materials are also the effective methods. Wool as a new concept of natural energy storage material is recognized by people.
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Dissertations / Theses on the topic "Cool storage"

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Sebzali, Mohamed. "Assessment of cool thermal storage strategies in Kuwait." Thesis, Cranfield University, 2006. http://hdl.handle.net/1826/1599.

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The extensive use of air conditioning for indoor cooling in offices and large commercial buildings in Kuwait represents a major part of the power and electricity consumption in that country. The main objective of this research was to investigate ice and chilled water cool thermal storage technologies and operating strategies for air conditioning. This was motivated by the extreme climatic conditions in Kuwait and the necessity to reduce both maximum power demand and energy consumption whilst being economically feasible. This work represents the first such study undertaken. In Kuwait approximately 45% of the total annual exported electrical energy is consumed solely by air conditioning systems as a result of the very high ambient temperatures occurring between March and October. Furthermore, it was estimated air conditioning systems represent about 62% of the peak electrical load. To assess the potential of cool thermal storage, the air conditioning system for an existing clinic building, representing a typical medium size building in Kuwait, was designed with and without a cool thermal storage system. The results demonstrate that internal ice-on-coil and chilled water storage systems are suitable storage technologies that can be implemented in Kuwait. The cooling demand of the clinic building was first estimated using the ESP-r building energy simulation program, following which the different components in the air conditioning systems were sized including chiller, storage tanks, pumps, air handling units for conventional, ice and chilled water storage air conditioning systems operating with load levelling, 50% demand limiting and full storage strategies. The heat gains by different auxiliary components in the air conditioning systems were estimated and the final cooling demand profiles were developed. For each air conditioning design, the power and energy consumption for the design day condition and over the whole year were calculated and analysed. Furthermore, the life cycle costs were determined based on the estimated capital, maintenance, operating costs and a financial analysis was carried out. For the Kuwaiti climate, the results demonstrate ice and chilled water storage systems can reduced the maximum power consumption during the day time when the electricity demand is high and largest reduction in the maximum power achieved full storage strategy. However, the energy consumption of ice storage system operating with 50% demand limiting and full strategies were found were found to be higher than the conventional air conditioning system. Nevertheless, the energy consumption in the ice storage system with a load levelling operating strategy was slightly lower. Chilled water storage system was found to be unlike ice storage system, the energy consumption in all operating strategies improved over the conventional system. Based on the estimated life cycle cost using the actual operating costs for both the government and user, it was established that for the government, ice storage operating with load levelling strategy and all other strategies of the chilled water storage systems would be more economical than conventional systems. However, for the user, load levelling ice storage, load levelling chilled water storage, and 50% demand limiting chilled water storage systems would be more cost effective. Out of all alternatives, chilled water storage system with a load levelling strategy was found to be the most cost effective for the climate of Kuwait and for similar climates of Kuwait. Although, the outcome from this research work can not be generalised however, the method of sizing and energy and economic analysis, which was discussed in this thesis can be generalised and followed to evaluate the impact of cool thermal storage systems on energy performance and economy of the air conditioning systems.
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Abdi, Nasser McGlasson W. B. Holford P. "Development of biochemical and physiological indices of maturity of dessert stone fruit in relation to cool storage /." Richmond, N.S.W. : Centre for Horticulture and Plant Science, University of Western Sydney, Hawkesbury, 1998. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030512.164418/index.html.

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Thesis (Ph.D.) -- University of Western Sydney, Hawkesbury, 1998.
Thesis submitted for the degree of doctor of philosophy. Reprints of related publications by N. Abdi, P. Holford and W.B. McGlasson included in back. Includes bibliographical references (leaves 129-152).
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Alfadda, Abdullah Ibrahim A. "Strategies for Managing Cool Thermal Energy Storage with Day-ahead PV and Building Load Forecasting at a District Level." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/93509.

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In hot climate areas, the electrical load in a building spikes, but not by the same amount daily due to various conditions. In order to cover the hottest day of the year, large cooling systems are installed, but are not fully utilized during all hot summer days. As a result, the investments in these cooling systems cannot be fully justified. A solution for more optimal use of the building cooling system is presented in this dissertation using Cool Thermal Energy Storage (CTES) deployed at a district level. Such CTES systems are charged overnight and the cool charge is dispatched as cool air during the day. The integration of the CTES helps to downsize the otherwise large cooling systems designed for the hottest day of the year. This reduces the capital costs of installing large cooling systems. However, one important question remains - how much of the CTES should be charged during the night, such that the cooling load for the next day is fully met and at the same time the CTES charge is fully utilized during the day. The solution presented in this dissertation integrated the CTES with Photovoltaics (PV) power forecasting and building load forecasting at a district level for a more optimal charge/discharge management. A district comprises several buildings of different load profiles, all connected to the same cooling system with central CTES. The use of forecasting for both the PV and the building cooling load allows the building operator to more accurately determine how much of the CTES should be charged during the night, such that the cooling system and CTES can meet the cooling demand for the next day. Using this approach, the CTES would be optimally sized, and utilized more efficiently during the day. At the same time, peak load savings are achieved, thus benefiting an electric utility company. The district presented in this dissertation comprises PV panels and three types of buildings – a mosque, a clinic and an office building. In order to have a good estimation for the required CTES charge for the next day, reliable forecasts for the PV panel outputs and the electrical load of the three buildings are required. In the model developed for the current work, dust was introduced as a new input feature in all of the forecasting models to improve the models' accuracy. Dust levels play an important role in PV output forecasts in areas with high and variable dust values. The overall solution used both the PV panel forecasts and the building load forecasts to estimate the CTES charge for the next day. The presented method was tested against the baseline method with no forecasting system. Multiple scenarios were conducted with different cooling system sizes and different CTES capacities. Research findings indicated that the presented method utilized the CTES charge more efficiently than the baseline method. This led to more savings in the energy consumption at the district level.
Doctor of Philosophy
In hot weather areas around the world, the electrical load in a building spikes because of the cooling load, but not by the same amount daily due to various conditions. In order to meet the demand of the hottest day of the year, large cooling systems are installed. However, these large systems are not fully utilized during all hot summer days. As a result, the investments in these cooling systems cannot be fully justified. A solution for more optimal use of the building cooling system is presented in this dissertation using Cool Thermal Energy Storage (CTES) deployed at a district level. Such CTES systems are charged overnight and the cool charge is dispatched as cool air during the day. The integration of the CTES helps to downsize the otherwise large cooling systems designed for the hottest day of the year. This reduces the capital costs of installing large cooling systems. However, one important question remains - how much of the CTES should be charged during the night, such that the cooling load for the next day is fully met and at the same time the CTES charge is fully utilized during the day. The solution presented in this dissertation integrated the CTES with Photovoltaics (PV) power forecasting and building load forecasting at a district level for a more optimal charge/discharge management. A district comprises several buildings all connected to the same cooling system with central CTES. The use of the forecasting for both the PV and the building cooling load allows the building operator to more accurately determine how much of the CTES should be charged during the night, such that the cooling system and CTES can meet the cooling demand for the next day. Using this approach, the CTES would be optimally sized and utilized more efficiently. At the same time, peak load is lowered, thus benefiting an electric utility company.
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Abdi, Nasser, of Western Sydney Hawkesbury University, of Science Technology and Agriculture Faculty, and Centre for Horticulture and Plant Sciences. "Development of biochemical and physiological indices of maturity of dessert stone fruit in relation to cool storage." THEIES_FST_HPS_Abdi_N.xml, 1998. http://handle.uws.edu.au:8081/1959.7/32.

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The aim of this research was to develop a new harvest maturity index for highly coloured stone fruit that is not affected by seasonal or climatic factors. The judgement of commercial maturity is difficult with some cultivars of stone fruit because they develop intense skin pigmentation several days before they are ripe. Studies of the changes of the physiochemical and physiological parameters associated with ripening confirmed that no single measurement is suitable for the assessment of harvest maturity in the Japanese type plum cultivars(Prunus salicina Lindl). Two distinct patterns of ripening behaviour were identified. The cool storage (0 degrees Centigrade) responses of fruit harvested at three stages of maturity were examined. Total soluble proteins were extracted and separated from fruit during maturation and ripening using 2-dimensional gel electrophoresis. At least three proteins were first detected in fruit at optimum commercial harvest maturity. Since Gulfruby, Beauty and Rubyred (Japanese type plum cultivars) accumulated similar concentrations of aminocyclopropane-1-carboxylic acid(ACC), it was suggested that the suppressed-climacteric phenotype is the result of an impaired ability of the fruit to convert this compound to ethylene
Doctor of Philosophy (PhD) (Ph.D.)
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Anderson, Matthew John. "Economic and Environmental Analysis of Cool Thermal Energy Storage as an Alternative to Batteries for the Integration of Intermittent Renewable Energy Sources." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51195.

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The balance of the supply of renewable energy sources with electricity demand will become increasingly difficult with further penetration of renewable energy sources. Traditionally, large stationary batteries have been used to store renewable energy in excess of electricity demand and dispatch the stored energy to meet future electricity demand. Cool thermal energy storage is a feasible renewable energy balancing solution that has economic and environmental advantages over utility scale stationary lead-acid batteries. Two technologies, ice harvesters and internal-melt ice-on-coil cool thermal energy storage, have the capability to store excess renewable energy and use the energy to displace electricity used for building cooling systems. When implemented by a utility, cool thermal energy storage can replace large utility scale batteries for renewable energy balancing in utility regions with high renewable energy penetration. The California Independent System Operator (CAISO) region and the Electric Reliability Council of Texas (ERCOT) are utility regions with large solar and wind resources, respectively, that can benefit from installation of cool thermal energy storage systems for renewable energy balancing. With proper scheduling of energy dispatched from cool thermal energy storage, these technologies can be effective in displacing peak power capacity for the region, in displacing traditional building cooling equipment, and in recovering renewable energy that would otherwise be curtailed.
Master of Science
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He, Bo. "High-Capacity Cool Thermal Energy Storage for Peak Shaving - a Solution for Energy Challenges in the 21st century." Doctoral thesis, KTH, Chemical Engineering and Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3781.

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Due to climatic change, increasing thermal loads inbuildings and rising living standards, comfort cooling inbuildings is becoming increasingly important and the demand forcomfort cooling is expanding very quickly around the world. Theincreased cooling demand results in a peak in electrical powerdemand during the hottest summer hours. This peak presents newchallenges and uncertainties to electricity utilities and theircustomers.

Cool thermal storage systems have not only the potential tobecome one of the primary solutions to the electrical powerimbalance between production and demand, but also shift coolingenergy use to off-peak periods and avoid peak demand charges.It increases the possibilities of utilizing renewable energysources and waste heat for cooling generation. In addition, acool storage can actually increase the efficiency of combinedheat and power (CHP) generation provided that heat drivencooling is coupled to CHP. Then, the cool storage may avoidpeaks in the heat demand for cooling generation, and this meansthat the CHP can operate at design conditions in most oftime.

Phase Change Materials (PCMs) used for cool storage hasobtained considerable attention, since they can be designed tomelt and freeze at a selected temperature and have shown apromising ability to reduce the size of storage systemscompared with a sensible heat storage system because they usethe latent heat of the storage medium for thermal energystorage.

The goal of this thesis is to define suitable PCM candidatesfor comfort cooling storage. The thesis work combines differentmethods to determine the thermophysical properties oftetradecane, hexadecane and their binary mixtures, anddemonstrates the potential of using these materials as PCM forcomfort cooling storage. The phase equilibrium of the binarysystem has been studied theoretically as well asexperimentally, resulting in the derivation of the phasediagram. With knowledge of the liquid-solid phase equilibriumcharacteristics and the phase diagram, an improvedunderstanding is provided for the interrelationships involvedin the phase change of the studied materials. It has beenindicated that except for the minimum-melting point mixture,all mixtures melt and freeze within a temperature range and notat a constant temperature, which is so far often assumed in PCMstorage design. In addition, the enthalpy change during thephase transition (heat of fusion) corresponds to the phasechange temperature range; thus, the storage density obtaineddepends on how large a part of the phase change temperaturerange is valid for a given application.

Differential Scanning Calorimetery (DSC) is one frequentlyused method in the development of PCMs. In this thesis, it hasbeen found that varying results are obtained depending on theDSC settings throughout the measurements. When the DSC runs ata high heating/cooling rate it will lead to erroneousinformation. Also, the correct phase transition temperaturerange cannot be obtained simply from DSC measurement. Combiningphase equilibrium considerations with DSC measurements gives areliable design method that incorporates both the heat offusion and the phase change temperature range.

The potential of PCM storage for peak shaving in differentcooling systems has been demonstrated. A Computer model hasbeen developed for rapid phase equilibrium calculation. The useof phase equilibrium data in the design of a cool storagesystem is presented as a general methodology.

Keywords:Comfort cooling, peak shaving, PCM, coolthermal storage system, DSC, phase change temperature range,the heat of fusion, phase equilibrium, phase diagram. Language:English

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Thielmann, Anika [Verfasser]. "Deficits of Vaccine Storage in German General Practices and the Effectiveness of a Web-Based Education Program to Improve Vaccine Storage Knowledge of Practice Personnel (Keep Cool) / Anika Thielmann." Bonn : Universitäts- und Landesbibliothek Bonn, 2020. http://d-nb.info/122258882X/34.

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Grozdek, Marino. "Load Shifting and Storage of Cooling Energy through Ice Bank or Ice Slurry Systems modelling and experimental analysis /." Doctoral thesis, Stockholm : Skolan för industriell teknik och management, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11119.

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Masoud, Alaa Abd El-Gaber Badawi. "Zur Qualitätsausbildung und Qualitätserhaltung gartenbaulicher Produkte." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2003. http://dx.doi.org/10.18452/14933.

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Qualität wird nach ISO 8402 als Gesamtheit von Eigenschaften und Merkmalen eines Produktes, die sich auf deren Eignung zur Erfüllung festgelegter oder vorausgesetzter Erfordernisse beziehen, definiert. Produkte mit hohem Wassergehalt und großer Atmungsrate können erhebliche Qualitätsbeeinträchtigungen in der Nachernteperiode bis zum Verkauf bzw. Verzehr erleiden. Am Beispiel des Spargels, also junger und physiologisch sehr aktiver Pflanzensprosse, werden äußere und innere Qualitätsmerkmale sowie deren Beeinflussbarkeit durch züchterisch- pflanzenbauliche Maßnahmen und Lagerverfahren einschließlich Vorkühlung und Lagerdauer aufgezeigt. Das im Land Brandenburg gewachsene Untersuchungsmaterial wurde aus einem 2- faktoriellen Parzellenfeldversuch, einem Praxis- Sortenvergleichsversuch und durch Zukauf gewonnen. Bonituren und Sortierung nach äußerlich erfassbaren, Qualitätskriterien sowohl von frisch geerntetem als auch von zwei bzw. fünf Wochen unter Kühl- und CA- Lagerbedingungen (verschiedene Gaszusammensetzungen) gelagerten Grün- und Bleichspargels der männlichen Hybridsorte `Gijnlim` sowie der gemischtgeschlechtlichen, anthocyanfreien Sorte `Huchels Schneewittchen` ergaben differenzierte Aussagen zur äußeren Qualität. Untersuchungen von Brix/ Zuckergehalt, Gehalt an Apfel-, Zitronen- und Weinsäure sowie proteinogenen Aminosäuren ( speziell essentielle und halbessentielle AS) und Gesamtpektin in den verschiedenen Spargelproben zeigten bei diesen wert- und geschmacksgebenden Inhaltsstoffen die Dynamik in ihrem Auftreten vom Erntezeitpunkt bis zum Auslagerungstermin auf. In diesem Zeitraum wurden auch der Frischgewichtsverlust erfasst und alle Untersuchungswerte stets vergleichend bei beiden Spargelanbauformen sowie beiden Sortentypen betrachtet. Dem bisherigen Kenntnisstand konnten einige neue Ergebnisse zur unterschiedlichen Qualitätsbildung und Qualitätserhaltungsmöglichkeit bei Grün- und Bleichspargel in Abhängigkeit von Sortenwahl, Bestandesdichte, Lagerverfahren und- dauer hinzugefügt werden. Sie bedürfen aber teilweise noch weiterer modifizierter Bearbeitung bzw. längerer Bearbeitungsdauer.
The quality is defined according to ISO 8402 as a whole of characteristics and significations of a product, which refer to their suitability for the fulfilment of fixed or presupposed requirements. Products with high water content and large breathing rate can suffer substantial quality impairments in the post-harvest period up to the time for selling and/or consumption. By the example of the asparagus, a rather young and physiologically very active plant rung, we register both external and internal breeding and plant-structural measures and storage procedures including precooling and duration of storage. The investigation material gathered in the Federal State of Brandenburg was won from a 2-factorial plot-field-test, a practice sort comparison test and by additional purchase. Bonitures and assortment after outwardly detectable, quality criteria both of freshly harvested and of two and/or five weeks under cool and APPROX. storage conditions (different gas compositions) of stored green and bleached Asparagus of the male hybrid sort ` Gijnlim` as well as the mixed-gender; Anthocyan-free sort ` Huchels Schneewittchen` resulted in differentiated statements to the outside quality. Investigations of Brix/ sugar content, content of apple -, lemon and tartaric acid as well as proteinogenen amino acids (particularly essential and halfessential AS) and total Pectin in the different asparagus samples pointed the dynamics in their occurrence from the harvest time to the paging date to taste-giving contents materials out with this worth and. In this period also the fresh decrease in weight and all investigation values always comparatively with both forms of cultivation of asparagus as well as both sort types were seized were regarded. The past level of knowledge could some new results for different quality formation and quality preservation possibility with green and bleaching asparagus as a function of sort choice, inventory density, camp procedure and duration be added. They require however partly still further modified treatment and/or longer machining time.
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Freitas, Samuel Scarassatti. "Aplicação de um sistema de refrigeração com fluido secundário e termoacumulação em câmara de congelados." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/255770.

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Orientador: Vivaldo Silveira Júnior
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: Dentro da indústria, os equipamentos de refrigeração ocupam um destacado papel no que se refere ao consumo de energia elétrica. A tarifação deste insumo vem sofrendo freqüentes reajustes, na medida em que sua demanda cresce e atende as necessidades econômicas do país. Os sistemas de termoacumulação representam uma alternativa para a economia do consumo energético nos períodos de maior tarifação, o que tende a atenuar os gastos com a energia elétrica. Neste trabalho, foi proposta a construção de um sistema de termoacumulação, com o objetivo de comparar esta técnica com um sistema tradicional de expansão seca em termos de consumo e demanda energética. O estudo envolveu a montagem da derivação da linha de refrigeração, a partir de um chiller, até o evaporador de uma câmara frigorífica, onde foram instalados sensores de temperatura, pressão e vazão, permitindo a avaliação das condições do processo por expansão seca. Em paralelo, foi montada uma linha de escoamento para o fluido refrigerante secundário que interligou um circuito onde o fluido é resfriado pelo sistema de refrigeração, termoacumulado em um tanque e bombeado ate um trocador de calor instalado dentro da câmara, onde é utilizado para resfriar o ambiente. A aplicação da termoacumulação objetivou alcançar as mesmas condições da câmara, mantidas pela expansão seca, com a posterior avaliação do consumo energético apresentado pelos dois sistemas. Foram instalados sensores de temperatura na linha de refrigerante secundário e também dentro da câmara. O consumo de potência da bomba e do compressor foram registrados e utilizados na comparação energética dos sistemas. A avaliação qualitativa englobou o cálculo da carga térmica empírica da câmara, bem como o registro das condições de funcionamento dos sistemas durante a expansão seca e a refrigeração do circuito secundário. A comparação dos sistemas frente ao consumo energético indicou uma economia superior a 42% na utilização da termoacumulação durante o período de ponta em comparação com o sistema de expansão seca. A aplicação da termoacumulação manteve a temperatura do interior da câmara estável durante as três horas em que o compressor permaneceu desligado, mostrando ser uma técnica de grande economia energética quando comparada com o sistema secundário sem termoacumulação, apresentando uma economia de 26% nos gastos em função deste período
Abstract: In the industry, refrigeration equipments possess a detached function in electric energy consumption. The price of this input has been frequently adjusted. In the same way that the demand grows and fills the economic needs of the country. the cool storage systems represent an alternative for save power consumption during periods of peak pricing, tending to decrease spending on energy consumption. In this paper, it was proposed the construction of a system for cool storage, in order to compare that technique with a traditional dry-expansion system, in terms of consumption and energy. The study involved the derivation of the assembly line cooling from a chiller evaporator until a cold chamber, on the line, temperature, pressure and flow sensors, were installed allowing the evaluation of process conditions for dry expansion . In parallel, a line was built, through which the refrigerant is pumped through a secondary circuit where it is cooled by the cooling system, stored in a tank at low temperature, and pumped to a heat exchanger installed inside the chamber where it is used to cool the environment. . The cool storage application had as an objective maintains the room conditions as the same in dry expansion, With the subsequent evaluation of the energy consumption of each system. Temperature sensors were installed in the secondary coolant line and also inside the chamber. The power consumption of the pump and compressor were recorded and used to comparing the two systems. The evaluation, has included the empirical calculation of the heat load for the cold chamber and the recording data of the system operating conditions during the dry-expansion and the cooling by the secondary circuit The comparison between the systems has indicated energy savings of more than 42% in the use of the cool stored system during the peak period. The application of cool storage kept the temperature inside the camera steady during the three hours when the compressor was off, proving to be a technique of great energy savings when compared to the secondary system without termoacumulação, showing a 26% saving in costs due this period
Mestrado
Engenharia de Alimentos
Mestre em Engenharia de Alimentos
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Books on the topic "Cool storage"

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S, Elleson James, and American Society of Heating, Refrigerating and Air-Conditioning Engineers., eds. Design guide for cool thermal storage. Atlanta, Ga: American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1994.

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Nash, Michael John. Crop conservation and storage in cool temperate climates. 2nd ed. Oxford [Oxfordshire]: Pergamon Press, 1985.

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Piette, Mary Ann. Technology assessment: Thermal cool storage in commercial buildings. Berkeley, CA: Lawrence Berkeley Laboratory, 1988.

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Braden, Linda. Mason jar crafts for kids: More than 25 cool, crafty projects to make for your friends, your family, and yourself! New York: Skyhorse Publishing Company, Incorporated, 2015.

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Mostaedi, Arian. Cool shops. Singapore: Page One, 2004.

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Carbon capture and storage including coal-fired power plants. Hauppauge, N.Y: Nova Science Publishers, 2009.

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Wester-Wetstein & Associates. Coal bed methane aquifer storage and retrieval project, level II: Interim report. Laramie, WY: Wester-Wetstein & Associates, 2003.

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Chan, H. T. Geotechnical challenges associated with increasing the storage capacity of a coal ash lagoon. S.l: s.n, 1987.

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Mullin, P. E. Landfill procedures for coal ash surplus: Permanent disposal sites or storage for utilization. S.l: s.n, 1987.

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Perzak, F. J. Fire tests of five-gallon containers used for storage in underground coal mines. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1985.

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Book chapters on the topic "Cool storage"

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Swet, C. J. "Cool Storage for Solar and Conventional Air Conditioning." In Energy Storage Systems, 349–68. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2350-8_14.

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Bushara, A. G. "Insect depredation during storage." In World crops: Cool season food legumes, 367–78. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2764-3_33.

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Collins, M., and C. C. Sheaffer. "Harvesting and Storage of Cool-Season Grass Hay and Silage." In Cool-Season Forage Grasses, 297–319. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/agronmonogr34.c10.

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Delouche, J. C. "Seed storage practices and problems for cool season food legumes." In World crops: Cool season food legumes, 331–39. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2764-3_30.

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Ellis, R. H., P. K. Agrawal, and E. E. Roos. "Harvesting and storage factors that affect seed quality in pea, lentil, faba bean and chickpea." In World crops: Cool season food legumes, 303–29. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2764-3_29.

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Moriniere, Olivier. "Cool Storage in Commercial Buildings; Efficient and Cost-Effective Technology." In Demand-Side Management and Electricity End-Use Efficiency, 145–68. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-1403-2_8.

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Satoh, N., Takafumi Yoshikawa, Kazuhide Miyazaki, Hideki Shigematsu, Y. Ueda, M. Koizumi, and Yoshinori Takakura. "Cool Storage of Human Tissue Engineered Bone for Bone Regeneration Therapy." In Bioceramics 18, 1005–8. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-992-x.1005.

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Lyu, Chao, Jiachen Zhong, Ping Jiang, Zhiyi Wang, Feng Yu, Yueqin Liu, and Maoyu Zheng. "Study on Operating Performance of Ground-Coupled Heat Pump with Seasonal Soil Cool Storage System." In Environmental Science and Engineering, 671–78. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-13-9524-6_70.

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Kuchibhotla, Vedanth Narayan, G. V. N. Trivedi, and R. Parameshwaran. "Dimethyl Adipate-Based Microencapsulated Phase Change Material with Silica Shell for Cool Thermal Energy Storage." In Lecture Notes in Mechanical Engineering, 225–34. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7831-1_21.

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Minty, Michiko G., and Frank Zimmermann. "Cooling." In Particle Acceleration and Detection, 263–300. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-08581-3_11.

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AbstractMany applications of particle accelerators require beam cooling, which refers to a reduction of the beam phase space volume or an increase in the beam density via dissipative forces. In electron and positron storage rings cooling naturally occurs due to synchrotron radiation, and special synchrotron-radiation damping rings for the production of low-emittance beams are an integral part of electron-positron linear colliders. For other types of particles different cooling techniques are available. Electron cooling and stochastic cooling of hadron beams are used to accumulate beams of rare particles (such as antiprotons), to combat emittance growth (e.g., due to scattering on an internal target), or to produce beams of high quality for certain experiments. Laser cooling is employed to cool ion beams down to extremely small temperatures. Here the laser is used to induce transitions between the ion electronic states and the cooling exploits the Dopper frequency shift. Electron beams of unprecedentedly small emittance may be obtained by a different type of laser cooling, where the laser beam acts like a wiggler magnet. Finally, designs of a future muon collider rely on the principle of ionization cooling. Reference [1] gives a brief review of the principal ideas and the history of beam cooling in storage rings; a theoretical dicussion and a few practical examples can be found in [2].
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Conference papers on the topic "Cool storage"

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Carr, Peter, and John J. Lindberg. "Idling Reduction Through Cool Storage." In International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1992. http://dx.doi.org/10.4271/922433.

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Sarood, Osman, and Laxmikant V. Kale. "A 'cool' load balancer for parallel applications." In 2011 International Conference for High Performance Computing, Networking, Storage and Analysis. New York, New York, USA: ACM Press, 2011. http://dx.doi.org/10.1145/2063384.2063412.

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Fujun Zhou. "Study on natural cool energy storage and utilization technology." In Environment (ICMREE). IEEE, 2011. http://dx.doi.org/10.1109/icmree.2011.5930573.

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Ngoy, T. J., and T.-H. Joubert. "An air quality sensing system for cool air storage." In Fourth Conference on Sensors, MEMS and Electro-Optic Systems, edited by Monuko du Plessis. SPIE, 2017. http://dx.doi.org/10.1117/12.2245539.

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Li, Xiao-Yan, Ying Cui, and Yan-Yan Wu. "Dynamic Simulation and Analysis of PCM Cool Storage Air-conditioning." In 2010 Third International Conference on Information and Computing Science (ICIC). IEEE, 2010. http://dx.doi.org/10.1109/icic.2010.276.

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Fang, Guiyin, Fan Yang, Man Zhang, and Shuangmao Wu. "Experimental measurement on characteristics of cool storage air conditioning system." In Fourth International Symposium on Precision Mechanical Measurements, edited by Yetai Fei, Kuang-Chao Fan, and Rongsheng Lu. SPIE, 2008. http://dx.doi.org/10.1117/12.819630.

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Sarood, Osman, Esteban Meneses, and Laxmikant V. Kale. "A 'cool' way of improving the reliability of HPC machines." In SC13: International Conference for High Performance Computing, Networking, Storage and Analysis. New York, NY, USA: ACM, 2013. http://dx.doi.org/10.1145/2503210.2503228.

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Li, Xiao-Yan, Ya-Chen Zhou, and Mei-Ling Qiu. "Simulation and Dynamic Analysis of Cool Storage Tank for Air-Conditioning." In 2009 Second International Conference on Information and Computing Science. IEEE, 2009. http://dx.doi.org/10.1109/icic.2009.405.

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Mansouri, Yaser, and Abdelkarim Erradi. "Cost Optimization Algorithms for Hot and Cool Tiers Cloud Storage Services." In 2018 IEEE 11th International Conference on Cloud Computing (CLOUD). IEEE, 2018. http://dx.doi.org/10.1109/cloud.2018.00086.

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He, Wang, Huang Shulin, and Zhang Yi. "Typical Cool Storage Air-Conditioning Projects Spot Measuring Operation Effect Analysis." In 2009 Asia-Pacific Power and Energy Engineering Conference. IEEE, 2009. http://dx.doi.org/10.1109/appeec.2009.4918948.

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Reports on the topic "Cool storage"

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Stovall, T. K. Transphase cool storage test report. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10112710.

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Stovall, T., and J. Tomlinson. Commercial cool storage laboratory test procedure. Office of Scientific and Technical Information (OSTI), June 1990. http://dx.doi.org/10.2172/7175878.

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Carr, P. Fuel savings in the heavy trucking industry through cool storage. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/6072170.

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Brown, D. R., and G. E. Spanner. Current cost and performance requirements for residential cool storage systems. Office of Scientific and Technical Information (OSTI), August 1988. http://dx.doi.org/10.2172/6812852.

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Wise, M. A. Diurnal cool thermal energy storage: Research programs, technological developments, and commercial status. Office of Scientific and Technical Information (OSTI), January 1992. http://dx.doi.org/10.2172/5962140.

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Weijo, R. O., and D. R. Brown. Estimating the market penetration of residential cool storage technology using economic cost modeling. Office of Scientific and Technical Information (OSTI), September 1988. http://dx.doi.org/10.2172/6750484.

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Bogdan, Alex, and Nikki Soo. Survey of consumer practices with respect to coated frozen chicken products. Food Standards Agency, June 2021. http://dx.doi.org/10.46756/sci.fsa.hrb725.

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The Food Standards Agency (FSA) is investigating a spike in Salmonella cases in the UK linked to the consumption of coated frozen chicken products. In March 2021, FSA, in collaboration with Food Standards Scotland (FSS) commissioned Ipsos MORI to conduct an online survey in order to identify consumer behaviours which could increase their risk to foodborne disease. The key research questions were: •Which consumers are purchasing coated frozen chicken products? •How do consumers store and cook these products? •Do consumers follow packaging instructions when cooking and storing these products?•Are consumers putting themselves at risk of Salmonellain the way they, store, cook and handle these products? •Do consumers take appropriate action to protect themselves from risk by washing their hands, and avoiding cross-contamination when handling these products? •Do children (aged 12 or under) or teenagers (aged 13-15) handle and cook these products?
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Skone, Timothy J. Storage/Disposal Coal Mine Tailings. Office of Scientific and Technical Information (OSTI), June 2014. http://dx.doi.org/10.2172/1509136.

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Chakravorty, R. N. Early detection of fire in coal storage facilities. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/304793.

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Zhao, Yu, Dong-Yang Wang, Hao Li, Xiao-Chun Liu, Hong Ding, Xuan-Ye Li, and Xiao-Yan Yun. BEYOND CODE LIMIT ANALYSIS OF LARGE-SPAN COAL STORAGE SHED. The Hong Kong Institute of Steel Construction, December 2018. http://dx.doi.org/10.18057/icass2018.p.170.

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