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Journal articles on the topic 'Adsorption Cooling'

Author: Grafiati

Published: 4 June 2021

Last updated: 14 March 2023

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1

Stefański, Sebastian, Łukasz Mika, Karol Sztekler, Wojciech Kalawa, Łukasz Lis, and Wojciech Nowak. "Adsorption bed configurations for adsorption cooling application." E3S Web of Conferences 108 (2019): 01010. http://dx.doi.org/10.1051/e3sconf/201910801010.

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Important parameters used for adsorption chillers, e.g. cooling capacity, coefficient of performance, are strictly dependent on heat and mass transfer conditions between adsorbent mass and the cooling/heating medium. With the aim of energy efficiency increasing it is essential to reduce heat transfer resistance. Different bed configurations and heat exchangers constructions are recommended for adsorption bed application. In the paper the review of commonly used adsorption bed configurations, i.e. loose-grain beds or fixed beds, is presented. Also, different heat exchangers for adsorption technology were described. The characteristic features of commonly applied constructions, both for commercial use and scientific research, were presented. The experimental studies presented in the literature were investigated and the substantial conclusions from the literature review are mentioned. Also, the proposition of new adsorption bed construction using the binder and additives was mentioned.

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2

Chakraborty, Anutosh, Kai Choong Leong, Kyaw Thu, Bidyut Baran Saha, and Kim Choon Ng. "Theoretical insight of adsorption cooling." Applied Physics Letters 98, no. 22 (May 30, 2011): 221910. http://dx.doi.org/10.1063/1.3592260.

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3

Daßler, Ingo, and Walter Mittelbach. "Solar Cooling with Adsorption Chillers." Energy Procedia 30 (2012): 921–29. http://dx.doi.org/10.1016/j.egypro.2012.11.104.

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4

Bagus Wirajati, I. Gusti Agung, I. Nengah Ardita, and I. Gede Nyoman Suta Waisnawa. "Photovoltaic driven adsorption-cooling cycle." Journal of Physics: Conference Series 1569 (July 2020): 032034. http://dx.doi.org/10.1088/1742-6596/1569/3/032034.

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5

OH, SEUNG TAEK, BIDYUT BARAN SAHA, KEISHI KARIYA, YOSHINORI HAMAMOTO, and HIDEO MORI. "FUEL CELL WASTE HEAT POWERED ADSORPTION COOLING SYSTEMS." International Journal of Air-Conditioning and Refrigeration 21, no. 02 (June 2013): 1350010. http://dx.doi.org/10.1142/s2010132513500107.

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In the present paper, the effect of desorption temperature on the performance of adsorption cooling systems driven by waste heat from fuel cells was analyzed. The studied adsorption cooling systems employ activated carbon fiber (ACF) of type A-20–ethanol and RD type silica gel–water as adsorbent–refrigerant pairs. Two different temperature levels of waste heat from polymer electrolyte fuel cell (PEFC) and solid oxide fuel cell (SOFC) are used as the heat source of the adsorption cooling systems. The adsorption cycles consist of one pair of adsorption–desorption heat exchanger, a condenser and an evaporator. System performance in terms of specific cooling capacity (SCC) and coefficient of performance (COP) are determined and compared between the studied two systems. Results show that silica gel–water based adsorption cooling system is preferable for effective utilization of relatively lower temperature heat source. At relatively high temperature heat source, COP of ACF–ethanol based adsorption system shows better performance than that of silica gel–water based adsorption system.

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6

Qi, Xiao Ni, and Zhen Yan Liu. "A Novel Exhaust-Driven Adsorption Icemaker on a Fishing Boat." Advanced Materials Research 233-235 (May 2011): 2486–89. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2486.

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Adsorption refrigeration is an effective way to use low-grade energy sources such as industrial waste heat without damaging the environment. A novel exhaust-driven adsorption icemaker on a fishing boat is introduced in this paper. Based on the previous study, combining with the single adsorption cooling tube technique, this paper presents an adsorption cooling unit with unique structure driven by exhaust waste heat (hereinafter referred to as "waste heat cooling tube" WHCT). Different with the previous tubular structured adsorption bed, WHCT is made of seamless stainless steel pipe, the adsorbent bed, evaporator / condenser are all placed in one tube. Adsorption working pair of calcium chloride-ammonia has been proposed and developed for adsorption cooling. The working principle and structure are introduced in this paper.

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7

Askalany, Ahmed A., Bidyut B. Saha, and Khairul Habib. "Adsorption Cooling System Employing Activated Carbon/R32 Adsorption Pair." MATEC Web of Conferences 13 (2014): 06001. http://dx.doi.org/10.1051/matecconf/20141306001.

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8

Trisupakitti, Somsuk, Jindaporn Jamradloedluk, and Songchai Wiriyaumpaiwong. "Adsorption Cooling System Using Metal-Impregnated Zeolite-4A." Advances in Materials Science and Engineering 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/4283271.

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The adsorption cooling systems have been developed to replace vapor compression due to their benefits of being environmentally friendly and energy saving. We prepared zeolite-4A and experimental cooling performance test of zeolite-water adsorption system. The adsorption cooling test-rig includes adsorber, evaporator, and condenser which perform in vacuum atmosphere. The maximum and minimum water adsorption capacity of different zeolites and COP were used to assess the performance of the adsorption cooling system. We found that loading zeolite-4A with higher levels of silver and copper increased COP. The Cu6%/zeolite-4A had the highest COP at 0.56 while COP of zeolite-4A alone was 0.38. Calculating the acceleration rate of zeolite-4A when adding 6% of copper would accelerate the COP at 46%.

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9

Askalany, Ahmed A., Bidyut B. Saha, Keishi Kariya, Ibrahim M. Ismail, Mahmoud Salem, Ahmed H. H. Ali, and Mahmoud G. Morsy. "Hybrid adsorption cooling systems–An overview." Renewable and Sustainable Energy Reviews 16, no. 8 (October 2012): 5787–801. http://dx.doi.org/10.1016/j.rser.2012.06.001.

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10

Mahesh, A., and S. C. Kaushik. "Solar adsorption cooling system: An overview." Journal of Renewable and Sustainable Energy 4, no. 2 (March 2012): 022701. http://dx.doi.org/10.1063/1.3691610.

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11

Shabir, Faizan, Muhammad Sultan, Yasir Niaz, Muhammad Usman, Sobhy M. Ibrahim, Yongqiang Feng, Bukke Kiran Naik, Abdul Nasir, and Imran Ali. "Steady-State Investigation of Carbon-Based Adsorbent–Adsorbate Pairs for Heat Transformation Application." Sustainability 12, no. 17 (August 28, 2020): 7040. http://dx.doi.org/10.3390/su12177040.

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In this study, the ideal adsorption cycle behavior of eight activated carbon and refrigerant pairs is evaluated. The selected pairs are KOH6-PR/ethanol, WPT-AC/ethanol, Maxsorb-III/methanol, Maxsorb-III/CO2, Maxsorb-III/n-butane, Maxsorb-III/R-134a, SAC-2/R32 and Maxsorb-III/R507a. The following cooling performance parameters are evaluated for all pairs: specific cooling energy (SCE), concentration difference (ΔW) and coefficient of performance (COP) of ideal adsorption cooling and refrigeration cycles. The evaporator temperatures for the applications of adsorption cooling and refrigeration are selected as 7 and −5 °C, respectively. It is found that the Maxsorb-III/methanol pair has shown the highest specific cooling energy and coefficient of performance in a wide range of desorption temperatures; i.e., for the adsorption cooling cycle it has SCE and COP of 639.83 kJ/kg and 0.803, respectively, with desorption temperatures of 80 °C. The KOH6-PR/ethanol and the WPT-AC/ethanol pairs also give good performances comparable to that of the Maxsorb-III/methanol pair. However, the SAC-2/R32 pair possesses a higher concentration difference than the Maxsorb-III/methanol, KOH6-PR/ethanol and WPT-AC/ethanol pairs but shows a lower performance. This is due to the lower isosteric heat of adsorption of SAC-2/R32 compared to these pairs. It is found that Maxsorb-III/methanol, KOH6-PR/ethanol and WPT-AC/ethanol are the most promising pairs for application in designing adsorption cooling and refrigeration systems.

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12

Liu, Zhilu, Guoliang An, Xiaoxiao Xia, Shaofei Wu, Song Li, and Liwei Wang. "The potential use of metal–organic framework/ammonia working pairs in adsorption chillers." Journal of Materials Chemistry A 9, no. 10 (2021): 6188–95. http://dx.doi.org/10.1039/d1ta00255d.

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The adsorption cooling performance of nine MOF/ammonia working pairs were evaluated, among which MIL-101(Cr) displayed the outstanding cooling performance and excellent recyclability, indicating its great potential in adsorption chillers.

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13

Bawazir, Abdullah, and Daniel Friedrich. "Evaluation and Design of Large-Scale Solar Adsorption Cooling Systems Based on Energetic, Economic and Environmental Performance." Energies 15, no. 6 (March 15, 2022): 2149. http://dx.doi.org/10.3390/en15062149.

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In hot and dry regions such as the Gulf Cooperation Council (GCC) countries, the cooling demand is often responsible for more than 70% of electricity consumption, which places a massive strain on the electricity grid and leads to significant emissions. Solar thermal driven Silica-Gel/Water adsorption chillers, used for space cooling, could provide low carbon emission cooling and reduce the reliance on grid electricity. However, a meticulous design is required to make this both economically and environmentally beneficial. This paper aims to evaluate the solar thermal adsorption chiller performance based on large-scale cooling demand through a TRNSYS simulation for 1 year of operation. The proposed system consists of two main parts: first, the solar loop with evacuated tube solar collectors; and second, the adsorption cooling system with a silica-gel/water adsorption chiller. A neighbourhood of 80 typical 197 m2 villas in Riyadh, the capital city of the Kingdom of Saudi Arabia (KSA), was taken as a case study. The solar adsorption cycle’s performance has been compared to the conventional vapour compression cycle in terms of energy, economic and environmental performance. In addition, a parametric study has been performed for the main design parameters. Results reveal that the system can reach a solar fraction of 96% with solar collector area of 5500 m2 and a storage tank volume between 350 and 400 m3. Furthermore, the annual energy cost can be reduced by 74% for the solar adsorption system compared to the conventional vapour compression cycle. Meanwhile, the CO2 saving percentage for the solar adsorption cycle was approximately 75% compared to the conventional vapour compression cycle. Carefully designed solar thermal cooling systems can reduce greenhouse gas emissions while covering a large scale of cooling demands. This can reduce the strain on the electricity grid as well as greenhouse gas emissions.

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14

Yin, Yu, Junpeng Shao, Lin Zhang, Qun Cui, and Haiyan Wang. "Experimental Study on Heat Transfer and Adsorption Cooling Performance of MIL-101/Few Layer Graphene Composite." Energies 14, no. 16 (August 13, 2021): 4970. http://dx.doi.org/10.3390/en14164970.

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MIL-101 is a promising metal-organic frameworks (MOFs) material in adsorption chiller application due to its high adsorption capacity for water and excellent adsorption/desorption cyclic stability. Few layer graphene (FLG) as the thermal conductive additive was added into MIL-101 to improve inferior heat transfer of MIL-101 in the adsorption cooling process. The heat transfer characteristic of MIL-101/FLG adsorber and the adsorption cooling performance of the MIL-101/FLG-water working pair were studied. Results show that thermal conductivity of MIL-101/20%FLG composite is 5.79-6.54 times that of MIL-101. Adding FLG is conducive to the formation of heat transfer channels in MIL-101/FLG adsorber and the rapid removal of adsorption heat. The heating and cooling rate of MIL-101/FLG adsorber is ~2.2 times that of MIL-101 adsorber. Under typical adsorption water chiller conditions, the specific cooling power (SCP) and coefficient of performance (COP) of the MIL-101/FLG-water working pair is 72.2–81.0 W kg−1 and 0.187–0.202, respectively, at desorption temperatures of 70 °C and 90 °C, which is 1.43–1.56 times higher than the MIL-101-water working pair. The excellent structural and adsorption/desorption cyclic stability of MIL-101/FLG composite is verified after 50 consecutive cycles. It can provide a promising adsorbent candidate (MIL-101/FLG composite) in adsorption water chiller process.

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15

Brancato, V., A. Frazzica, A. Sapienza, L. Gordeeva, and A. Freni. "Ethanol adsorption onto carbonaceous and composite adsorbents for adsorptive cooling system." Energy 84 (May 2015): 177–85. http://dx.doi.org/10.1016/j.energy.2015.02.077.

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16

Lattieff, Farkad A., Mohammed A. Atiya, Jasim M. Mahdi, Hasan Sh Majdi, Pouyan Talebizadehsardari, and Wahiba Yaïci. "Performance Analysis of a Solar Cooling System with Equal and Unequal Adsorption/Desorption Operating Time." Energies 14, no. 20 (October 16, 2021): 6749. http://dx.doi.org/10.3390/en14206749.

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In solar-thermal adsorption/desorption processes, it is not always possible to preserve equal operating times for the adsorption/desorption modes due to the fluctuating supply nature of the source which largely affects the system’s operating conditions. This paper seeks to examine the impact of adopting unequal adsorption/desorption times on the entire cooling performance of solar adsorption systems. A cooling system with silica gel–water as adsorbent-adsorbate pair has been built and tested under the climatic condition of Iraq. A mathematical model has been established to predict the system performance, and the results are successfully validated via the experimental findings. The results show that, the system can be operational at the unequal adsorption/desorption times. The performance of the system with equal time is almost twice that of the unequal one. The roles of adsorption velocity, adsorption capacity, overall heat transfer coefficient, and the performance of the cooling system are also evaluated.

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17

Januševičius, Karolis, Giedrė Streckienė, and Violeta Misevičiūtė. "Simulation and Analysis of Small-Scale Solar Adsorption Cooling System for Cold Climate." International Journal of Environmental Science and Development 6, no. 1 (2015): 54–60. http://dx.doi.org/10.7763/ijesd.2015.v6.561.

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18

Saravanan, N., R. Rathnasamy, and V. Ananchasivan. "Design and Analysis of Cooling Cabinet for Vaccine Storage." Advanced Materials Research 984-985 (July 2014): 1180–83. http://dx.doi.org/10.4028/www.scientific.net/amr.984-985.1180.

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Solar powered adsorption refrigeration system is renewable source in the future energy demands and more useful for off-grid area. In this paper a mathematical model was developed to investigate the performance of a cooling cabinet of a activated carbon-ammonia adsorption refrigeration system, and a new effective method about the refrigeration studies. A brief thermodynamic study of the cooling cabinet is carried out and the effect of operating parameters such as temperature, pressure, cooling effect of the system is numerically analyzed. The impact of solar intensity on performance of the system is significant. The cooling cabinet model is completely analysied for varies capacity and it is able to calculate the cooling cabinet coil length .The designed mathematical model is analyzed by the use of coolpack software and the results are compared with ansys software. It is observed that the system operate more efficient while maximum solar intensity and the cooling effect. Key words: Solar, Adsorption Refrigeration, Mathematical model, Analysis, Solar intensity.

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19

Ramadan, Abdulghani, Khairi Mufth, Abdul-Gaffr Omran, and Saif-Eddin Aloud. "Thoretical Study for an Adsorption Refrigerator." Solar Energy and Sustainable Development Journal 8, no. 1 (June 30, 2019): 34–45. http://dx.doi.org/10.51646/jsesd.v8i1.23.

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Adsorption cooling technology is one of the effctive means to convert low grade thermal energy in to effctive cooling, which improves energy effiency and lowers environmental pollution. The main objective of this study is to investigate the thermal performance of an adsorption refrigerator theoretically.The working adsorbent/adsorbate pair used is Granular Activated Carbon, GAC/R134a pair. The effct of diffrent design parameters and operating conditions on the system performance is studied and interpreted. Some assumptions and approximations are also considered. A computer program is written using Matlab. Results show that the equilibrium adsorption capacity is highly affcted by the driving temperature and equilibrium pressure. Increasing equilibrium pressure leads to a corresponding increase in the equilibrium adsorption capacity whereas it is value is decreased as the driving temperature increases. Moreover, increasing the driving and evaporator temperatures raise the values of the Specifi Cooling Effct (SCE) and Coeffient of Performance (COP). The maximum values of SCE and COP are 60 KJ/kg and 0.4 corresponding to driving and evaporator temperatures of 100 oC and 20 oC respectively. However, increasing the condenser temperature leads to a remarked decrease in SCE and COP of the cooling system. SCE and COP values are 32 KJ/kg and 0.22 at driving and condenser temperatures of 100 oC and 40 oC respectively. When comparingthe present study results with literature, there is a good agreement in general. It is clear that the adsorption cooling system can be driven effctively by low grade heat sources such as, solar energy, waste heat energy, geothermal energy…etc.

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20

Krzywanski, Jaroslaw, Karolina Grabowska, Marcin Sosnowski, Anna Zylka, Karol Sztekler, Wojciech Kalawa, Tadeusz Wojcik, and Wojciech Nowak. "An adaptive neuro-fuzzy model of a re-heat two-stage adsorption chiller." Thermal Science 23, Suppl. 4 (2019): 1053–63. http://dx.doi.org/10.2298/tsci19s4053k.

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Since the adsorption chillers do not use primary energy as driving source the possibility to employ low temperature waste heat sources in cooling energy production receives nowadays much attention of the industry and science community. However, the performance of the thermally driven adsorption systems is lower than that of other heat driven heating/cooling systems. Low coefficients of performance are one of the main disadvantages of adsorption coolers. It is the result of a poor heat transfer coefficient between the bed and the immersed heating surfaces of a built-in heat exchanger system. The purpose of this work is to study the effect of thermal conductance values of sorption elements and evaporator as well as other design parameters on the performance of a re-heat two-stage adsorption chiller. One of the main energy efficiency factors in cooling production, i. e. cooling capacity for wide-range of both design and operating parameters is analyzed in the paper. Moreover, the work introduces artificial intelligence approach for the optimization study of the adsorption cooler. The ANFIS was employed in the work. The increase in both the bed and evaporator conductance provides better performance of the considered innovative adsorption chiller. The highest obtained value of cooling capacity is 21.7 kW and it can be achieved for the following design and operational parameters of the considered re-heat two-stage adsorption chiller: Msorb = 40 kg, t = 1300 s, T = 80?C, Csorb/Cmet = 50, hAsorb = 4000 W/K, hAevap = 4000 W/K.

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21

Fan, Wu, Anutosh Chakraborty, and Sibnath Kayal. "Adsorption cooling cycles: Insights into carbon dioxide adsorption on activated carbons." Energy 102 (May 2016): 491–501. http://dx.doi.org/10.1016/j.energy.2016.02.112.

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22

Gomri, Rabah, and Billel Mebarki. "Study and Analysis by Numerical Simulation of a Solar Continuous Adsorption Chiller." Applied Mechanics and Materials 773-774 (July 2015): 605–9. http://dx.doi.org/10.4028/www.scientific.net/amm.773-774.605.

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Environment and energy problems over the world have motivated researchers to develop energy systems more sustainable, having as one of the possible alternative the use of solar energy as source for cooling systems. Adsorption refrigeration systems are regarded as environmentally friendly alternatives to conventional vapour compression refrigeration systems, since they can use refrigerants that do not contribute to ozone layer depletion and global warming. In this paper a performance comparison between a solar continuous adsorption cooling system without mass recovery process and solar continuous adsorption cooling system with mass recovery process is carried out. Silica-Gel as adsorbent and water as refrigerant are selected. The results show that the adsorption refrigeration machine driven by solar energy can operate effectively during four months and is able to produce cold continuously along the 24 hours of the day. The importance of the mass recovery is proved in this study by increasing the coefficient of performance and the cooling capacity produced. For the same cooling capacity produced, the required number of solar collectors with mass recovery system is lower than the required number of solar collectors in the case of the refrigeration unit without mass recovery. For the same cooling capacity the system with mass recovery process allowed lower generation temperature.

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23

Ugale, Vinayak D., and Amol D. Pitale. "A Review on Working Pair Used in Adsorption Cooling System." International Journal of Air-Conditioning and Refrigeration 23, no. 02 (May 27, 2015): 1530001. http://dx.doi.org/10.1142/s2010132515300013.

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Adsorption cooling system find its application in refrigeration, air conditioning, chiller, Ice making, etc. It uses thermal energy as driving force. Adsorption systems are environmental friendly (zero global warming potential and ozone depleting potential) and also eliminates use of compressor and minimize vibration problem. So it can be used as substitute for conventional vapor compression refrigeration system or vapor absorption system. The adsorption generally classified in two types as physical adsorption (due to weak van der waal forces) and chemical adsorption (chemical reaction between adsorbent and adsorbate form new molecules). The working pair of adsorber and adsorbate play vital role in the performance of adsorption system. Activated carbon, zeolite, silica gel are commonly used adsorber and water, ammonia, methanol and ethanol can be used as adsorbate. The poor heat and mass transfer performance of adsorption is major challenge for researchers. The heat transfer performance of adsorption system can be increased by increasing heat transfer area of adsorber bed i.e., design of new adsorber bed, while mass transfer performance is improved by use of new adsorbent with higher sorption rate. Composite adsorber solve the problem of heat and mass transfer performance of chemical adsorbents and adsorption quantity of physical adsorbents by combination of chemical and physical adsorbent but it can add some limitation with it. In this paper, various adsorption pair, their selection, design of adsorber bed, methods to improve thermal performance of adsorber bed is reviewed with their properties, advantages and limitations.

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24

Wu, Jun W., Eric J. Hu, and Mark J. Biggs. "Low Energy Adsorption Desalination Technology." Advanced Materials Research 347-353 (October 2011): 601–6. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.601.

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Adsorption-based desalination (AD) is attracting increasing attention because of its ability to use low-grade thermal energy to co-generate fresh water and cooling. In this paper, the working principle of the AD technology and the possible operation cycles of AD system have been described. A thermodynamic model has been developed in order to study the operational parameters that influence the fresh water production rate (FWPR) and energy consumption of silica gel based AD system. Water adsorption on the silica gel is modelled using a Langmuir isotherm and the factors studied are the heating and cooling water temperatures, which supply and remove heat from the silica gel respectively, and the set temperature of the evaporator. The result shows that the cooling water temperature has far more significant impact on the both water productivity and energy consumption compared to the heating water temperature. The paper also discusses in detail the impact of evaporator temperature on the thermodynamic cycle when the system is operated in desalination mode only.

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25

Saravanan, N., and M. Edwin. "Optimization and experimental analysis of a solar powered adsorption refrigeration system using selective adsorbent/adsorbate pairs." Journal of Renewable and Sustainable Energy 14, no. 2 (March 2022): 023702. http://dx.doi.org/10.1063/5.0076645.

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Adsorption-based cooling system is a cost-effective method of heat conversion. It has the potential to dramatically enhance energy efficiency while also lowering pollutant levels. For this purpose, a solar-powered vapor adsorption refrigeration system (VAdRS) using activated carbon–methanol and zeolite–water as the working pair has been designed and experimentally evaluated. The aim of this experiment was to evaluate the coefficient of performance (COP) and specific cooling power (SCP) of a solar cooling unit by utilizing the optimum minimum and maximum mass concentration ratios. The novel solar-assisted adsorption refrigeration system optimization technique is used in this research to evaluate the optimal performance of the solar-powered VAdRS under various operating scenarios. The experiment was conducted at the optimum minimum and maximum mass concentration ratios of 0.1 and 0.2, respectively. The experimental results show that the activated carbon–methanol adsorption system produces a higher COP value than the zeolite–water adsorption system of 0.49–0.64 and 0.64–0.67 at constant evaporator and condenser temperature, respectively. It also showed that the higher SCP value was revealed in the zeolite–water-based adsorption cooling system as 207.5–217.4 kJ/kg. It was revealed that AC–methanol could be used to operate better in low-generating-temperature conditions. On the other hand, the zeolite–water adsorption system can be used at higher generating temperatures.

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26

Cao, Ngoc Vi, Xuan Quang Duong, Woo Su Lee, Moon Yong Park, Seung Soo Lee, and Jae Dong Chung. "Exergy Analysis of Advanced Adsorption Cooling Cycles." Entropy 22, no. 10 (September 26, 2020): 1082. http://dx.doi.org/10.3390/e22101082.

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This study conducted an exergy analysis of advanced adsorption cooling cycles. The possible exergy losses were divided into internal losses and external losses, and the exergy losses of each process in three advanced cycles: a mass recovery cycle, heat recovery cycle and combined heat and mass recovery cycle were calculated. A transient two-dimensional numerical model was used to solve the heat and mass transfer kinetics. The exergy destruction of each component and process in a finned tube type, silica gel/water working paired-adsorption chiller was estimated. The results showed that external loss was significantly reduced at the expense of internal loss. The mass recovery cycle reduced the total loss to 60.95 kJ/kg, which is −2.76% lower than the basic cycle. In the heat recovery cycle, exergy efficiency was significantly enhanced to 23.20%. The optimum value was 0.1248 at a heat recovery time of 60 s. The combined heat and mass recovery cycle resulted in an 11.30% enhancement in exergy efficiency, compared to the heat recovery cycle. The enhancement was much clearer when compared to the basic cycle, with 37.12%. The observed dependency on heat recovery time and heating temperature was similar to that observed for individual mass recovery and heat recovery cycles.

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27

Wolak, Eliza. "The cooling effect by adsorption-desorption cycles." E3S Web of Conferences 14 (2017): 01052. http://dx.doi.org/10.1051/e3sconf/20171401052.

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28

Pilát, Peter, Marek Patsch, and Milan Malcho. "Solar heat utilization for adsorption cooling device." EPJ Web of Conferences 25 (2012): 01074. http://dx.doi.org/10.1051/epjconf/20122501074.

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29

MAEDA, Shinnosuke, Tomohiro MARUYAMA, Toru KAWAMATA, and Tadayoshi ONDA. "Adsorption heat pump for vehicle cooling system." Proceedings of the National Symposium on Power and Energy Systems 2016.21 (2016): D244. http://dx.doi.org/10.1299/jsmepes.2016.21.d244.

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30

Duong, Xuan Quang, Ngoc Vi Cao, and Jae Dong Chung. "Heat Recovery Time of Adsorption Cooling System." International Journal of Air-Conditioning and Refrigeration 26, no. 02 (June 2018): 1850014. http://dx.doi.org/10.1142/s2010132518500141.

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In this study, a two-dimensional numerical model of finned-tube type adsorbers was developed and used to examine heat recovery time to improve the performance of an adsorption cooling system. The optimal heat recovery time, which resulted in the highest COP, was determined for a range of heat source temperatures (60–90[Formula: see text]C) and cycle times (600–1200[Formula: see text]s). The introduced heat recovery process enhanced COP, but also reduced SCP. This penalty became more serious when the hot water temperature was low and cycle time was short, which serves as a guideline for when heat recovery should be adopted in a given operating condition.

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31

Robbins, Thomas, and Srinivas Garimella. "An autonomous solar driven adsorption cooling system." Solar Energy 211 (November 2020): 1318–24. http://dx.doi.org/10.1016/j.solener.2020.10.068.

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32

Askalany, Ahmed A., M. Salem, I. M. Ismael, A. H. H. Ali, M. G. Morsy, and Bidyut B. Saha. "An overview on adsorption pairs for cooling." Renewable and Sustainable Energy Reviews 19 (March 2013): 565–72. http://dx.doi.org/10.1016/j.rser.2012.11.037.

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33

Bagheri, Morteza H., and Scott N. Schiffres. "Ideal Adsorption Isotherm Behavior for Cooling Applications." Langmuir 34, no. 5 (January 24, 2018): 1908–15. http://dx.doi.org/10.1021/acs.langmuir.7b03989.

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Khattab, N. M., H. Sharawy, and M. Helmy. "Development of Novel Solar Adsorption Cooling Tube." Energy Procedia 18 (2012): 709–14. http://dx.doi.org/10.1016/j.egypro.2012.05.086.

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Duong, Xuan Quang, Ngoc Vi Cao, Woo Su Lee, and Jae Dong Chung. "Module integration in an adsorption cooling system." Applied Thermal Engineering 155 (June 2019): 508–14. http://dx.doi.org/10.1016/j.applthermaleng.2019.03.152.

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Hassan, H. Z., A. A. Mohamad, and R. Bennacer. "Simulation of an adsorption solar cooling system." Energy 36, no. 1 (January 2011): 530–37. http://dx.doi.org/10.1016/j.energy.2010.10.011.

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Chekirou, Wassila, Nahman Boukheit, and Ahcene Karaali. "Performance improvement of adsorption solar cooling system." International Journal of Hydrogen Energy 41, no. 17 (May 2016): 7169–74. http://dx.doi.org/10.1016/j.ijhydene.2016.02.140.

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Suzuki, Motoyuki. "Application of adsorption cooling systems to automobiles." Heat Recovery Systems and CHP 13, no. 4 (July 1993): 335–40. http://dx.doi.org/10.1016/0890-4332(93)90058-4.

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Ezgi, Cüneyt. "Design and Thermodynamic Analysis of Waste Heat-Driven Zeolite–Water Continuous-Adsorption Refrigeration and Heat Pump System for Ships." Energies 14, no. 3 (January 29, 2021): 699. http://dx.doi.org/10.3390/en14030699.

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Strict International Maritime Organization (IMO) rules enable ships to maximize fuel consumption and compliance with the climate. Cooling and heat-pumping technology powered by waste heat makes a substantial contribution to lowering ship gas emissions. This study explores, technically studies, and thermodynamically analyzes the efficiency of ongoing adsorption refrigeration and heating systems using a zeolite–water pair onboard a naval surface ship. An updated Dubin-in-Astakhov equation calculates the equilibrium adsorption potential of the operating pair used in the system. The coefficient of performance (COP) and specific cooling power (SCP)/specific heating power (SHP) values were between 0.109 and 0.384 and between 69.13 and 193.58 W kg−1 for cooling mode, and between 66.16 and 185.26 W kg−1 based on exhaust gas temperature and regeneration, respectively. Up to 27.64% and 52.91% met the cooling and heating load of the case vessel at a full load by the zeolite–water-adsorbed refrigeration/heat-pumping system. The COP of the heat pump and cooling systems was compared to that of adsorption cooling/heat pumps in the literature.

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Szyc, Małgorzata, and Wojciech Nowak. "Operation of an Adsorption Chiller in Different Cycle Time Conditions." Chemical and Process Engineering 35, no. 1 (March 1, 2014): 109–19. http://dx.doi.org/10.2478/cpe-2014-0008.

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Abstract This paper is devoted to application of adsorption process for cooling power generation in a cooling devices. Construction and working principle of a water-silica gel adsorption chiller has been presented and the basic refrigeration cycle has been discussed. The article outlines behavior of a single-stage adsorption system influenced by changes in cycle time. The effect of cycle time and inlet chilled water temperatures on the main system performance parameters has been analysed

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Lambert, Hugo, Robin Roche, Samir Jemeï, Pascal Ortega, and Daniel Hissel. "Combined Cooling and Power Management Strategy for a Standalone House Using Hydrogen and Solar Energy." Hydrogen 2, no. 2 (May 8, 2021): 207–24. http://dx.doi.org/10.3390/hydrogen2020011.

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Tropical climate is characterized by hot temperatures throughout the year. In areas subject to this climate, air conditioning represents an important share of total energy consumption. In some tropical islands, there is no electric grid; in these cases, electricity is often provided by diesel generators. In this study, in order to decarbonize electricity and cooling production and to improve autonomy in a standalone application, a microgrid producing combined cooling and electrical power was proposed. The presented system was composed of photovoltaic panels, a battery, an electrolyzer, a hydrogen tank, a fuel cell, power converters, a heat pump, electrical loads, and an adsorption cooling system. Electricity production and storage were provided by photovoltaic panels and a hydrogen storage system, respectively, while cooling production and storage were achieved using a heat pump and an adsorption cooling system, respectively. The standalone application presented was a single house located in Tahiti, French Polynesia. In this paper, the system as a whole is presented. Then, the interaction between each element is described, and a model of the system is presented. Thirdly, the energy and power management required in order to meet electrical and thermal needs are presented. Then, the results of the control strategy are presented. The results showed that the adsorption cooling system provided 53% of the cooling demand. The use of the adsorption cooling system reduced the needed photovoltaic panel area, the use of the electrolyzer, and the use of the fuel cell by more than 60%, and reduced energy losses by 7% (compared to a classic heat pump) for air conditioning.

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Grzebielec, Andrzej, and Artur Rusowicz. "Analysis of the use of adsorption processes in trigeneration systems." Archives of Thermodynamics 34, no. 4 (December 1, 2013): 35–49. http://dx.doi.org/10.2478/aoter-2013-0028.

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Abstract The trigeneration systems for production of cold use sorption refrigeration machines: absorption and adsorption types. Absorption systems are characterized namely by better cooling coefficient of performance, while the adsorptive systems are characterized by the ability to operate at lower temperatures. The driving heat source temperature can be as low as 60-70 °C. Such temperature of the driving heat source allows to use them in district heating systems. The article focuses on the presentation of the research results on the adsorption devices designed to work in trigeneration systems.

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Rafique, Muhammad Mujahid. "Evaluation of Metal–Organic Frameworks as Potential Adsorbents for Solar Cooling Applications." Applied System Innovation 3, no. 2 (June 23, 2020): 26. http://dx.doi.org/10.3390/asi3020026.

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The reduction of carbon dioxide emissions has become a need of the day to overcome different environmental issues and challenges. The use of alternative and renewable-based technologies is one of the options to achieve the target of sustainable development through the reduction of these harmful emissions. Among different technologies thermally activated cooling systems are one which can reduce the harmful emissions caused by conventional heating, ventilation, and air conditioning technology. Thermal cooling systems utilize different porous materials and work on a reversible adsorption/desorption cycle. Different advancements have been made for this technology but still a lot of work should be done to replace conventional systems with this newly developed technology. High adsorption capacity and lower input heat are two major requirements for efficient thermally driven cooling technologies. In this regard, it is a need of the day to develop novel adsorbents with high sorption capacity and low regeneration temperature. Due to tunable topologies and a highly porous nature, the hybrid porous crystalline materials known as metal–organic frameworks (MOFs) are a great inspiration for thermally driven adsorption-based cooling applications. Keeping all the above-mentioned aspects in mind, this paper presents a comprehensive overview of the potential use of MOFs as adsorbent material for adsorption and desiccant cooling technologies. A detailed overview of MOFs, their structure, and their stability are presented. This review will be helpful for the research community to have updated research progress in MOFs and their potential use for adsorption-based cooling systems.

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Xia, Z. Z., R. Z. Wang, Z. S. Lu, and L. W. Wang. "Two Heat Pipe Type High Efficient Adsorption Icemakers for Fishing Boats." Open Chemical Engineering Journal 1, no. 1 (July 20, 2007): 17–22. http://dx.doi.org/10.2174/1874123100701010017.

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The adsorption performances of compound adsorbent (the mixing of activated carbon and CaCl2 by proper technology)-ammonia are studied, which shows the obviously improvement for long term stable operation of adsorption/ desorption, and also the large adsorption cooling density. A multifunction heat pipe for heat transfer design in adsorber is invented to use waste heat for heating and sea water for cooling effectively and reliably. An adsorption icemaker experimental system driven by the exhausted heat from the diesel engine of fishing boats are studied, which shows the optimum average SCP (specific cooling power) and COP (coefficient of performance) for the refrigerator have reached to 770.4W/kg and 0.39 respectively at about -20°C evaporating temperature. Based upon the studies above, a real multifunction heat pipe adsorption icemaker is then designed and built, the system is fully automatic controlled by Programmable Logic Controller (PLC). The system operation shows the capability to make flake ice for more than 20 kg/hr.

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Aceves, S. M. "An Analytical Comparison of Adsorption and Vapor Compression Air Conditioners for Electric Vehicle Applications." Journal of Energy Resources Technology 118, no. 1 (March 1, 1996): 16–21. http://dx.doi.org/10.1115/1.2792686.

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This paper shows an analysis of the applicability of an adsorption system for electric vehicle (EV) air conditioning. Adsorption systems are designed and optimized to provide the required cooling for four combinations of vehicle characteristics and driving cycles. The resulting adsorption systems are compared with vapor compression air conditioners that can satisfy the cooling load. The objective function is the overall system weight, which includes the cooling system weight and the weight of the battery necessary to provide energy for air conditioner operation. The system with the minimum overall weight is considered to be the best. The results show the optimum values of all the variables, as well as temperatures and amounts adsorbed, for the adsorption and desorption processes. The results indicate that, for the conditions analyzed in this paper, vapor compression air conditioners are superior to adsorption systems, not only because they are lighter, but also because they have a higher COP and are more compact.

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Alsarayreh, Ahmad A., Ayman Al-Maaitah, Menwer Attarakih, and Hans-Jörg Bart. "Performance Analysis of Variable Mode Adsorption Chiller at Different Recooling Water Temperatures." Energies 14, no. 13 (June 27, 2021): 3871. http://dx.doi.org/10.3390/en14133871.

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Adsorption cooling can recover waste heat at low temperature levels, thereby saving energy and reducing greenhouse gas emissions. An air-cooled adsorption cooling system reduces water consumption and the technical problems associated with wet-cooling systems; however, it is difficult to maintain a constant recooling water temperature using such a system. To overcome this limitation, a variable mode adsorption chiller concept was introduced and investigated in this study. A prototype adsorption chiller was designed and tested experimentally and numerically using the lumped model. Experimental and numerical results showed good agreement and a similar trend. The adsorbent pairs investigated in this chiller consisted of silicoaluminophosphate (SAPO-34)/water. The experimental isotherm data were fitted to the Dubinin–Astakhov (D–A), Freundlich, Hill, and Sun and Chakraborty (S–C) models. The fitted data exhibited satisfactory agreement with the experimental data except with the Freundlich model. In addition, the adsorption kinetics parameters were calculated using a linear driving force model that was fitted to the experimental data with high correlation coefficients. The results show that the kinetics of the adsorption parameters were dependent on the partial pressure ratio. Four cooling cycle modes were investigated: single stage mode and mass recovery modes with duration times of 25%, 50%, and 75% of the cooling cycle time (denoted as short, medium, and long mass recovery, respectively). The cycle time was optimized based on the maximum cooling capacity. The single stage, short mass recovery, and medium mass recovery modes were found to be the optimum modes at lower (<35 °C), medium (35–44 °C), and high (>44 °C) recooling temperatures. Notably, the recooling water temperature profile is very important for assessing and optimizing the suitable working mode.

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Sur, Anirban, Randip Das, and Ramesh Sah. "Influence of initial bed temperature on bed performance of an adsorption refrigeration system." Thermal Science 22, no. 6 Part A (2018): 2583–95. http://dx.doi.org/10.2298/tsci160108254s.

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The study deals with the complete dynamic analysis (numerical and practical) of an existing adsorption refrigeration system. The adsorption refrigeration setup is available at Indian School of Mines (Dhanbad, India), Mechanical engineering department. The system operates with activated carbon (as an adsorbent) and methanol (as refrigerant).Numerical model is established base on energy equation of the heat transfer fluid (water) and transient heat and mass transfer equations of the adsorbent bed. The input temperature of heat source is 90?C, which is very low compared to other low-grade energy input refrigeration system. The thermo-physical properties of an adsorptive cooling system (using activated carbon?methanol pair) are considered in this model. In this analysis influence of initial bed temperature (T1) on the bed performances are analysed mathematically and experimentally. The simulation and practical results of this system show that the cycle time decreases with increase in initial bed temperature and the minimum cycle time is 10.74 hours (884 minutes for practical cycle) for initial bed temperature of 40?C. Maximum system COP and specific cooling capacity are 0.436 and 94.63 kJ/kg of adsorbent under a condenser and evaporator temperatures of 35?C and 5?C, respectively. This analysis will help to make a comparison between simulated and experimental results of a granular bed adsorption refrigeration system and also to meet positive cooling needs in off-grid electricity regions.

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Boruta, Piotr, Tomasz Bujok, Łukasz Mika, and Karol Sztekler. "Adsorbents, Working Pairs and Coated Beds for Natural Refrigerants in Adsorption Chillers—State of the Art." Energies 14, no. 15 (August 3, 2021): 4707. http://dx.doi.org/10.3390/en14154707.

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Adsorption refrigeration systems are promising, sustainable solutions for many cooling applications. The operating range and the performance of an adsorption cooling cycle are strongly dependent on the properties of adsorbents, adsorbates, and bed coatings. Therefore, further research and analysis may lead to improved performance of adsorption coolers. In this paper, studies on working pairs using natural refrigerants and the properties of adsorbent coatings were reviewed. The selected working pairs were then thermodynamically characterised and ranked in terms of refrigerant evaporation temperature values. This was found to be a key parameter affecting the applicability of a given adsorbent/adsorbate pair and the value of SCP (Specific Cooling Power), COP (Coefficient of Performance) parameters, which are now commonly used comparison criteria of adsorption chillers. In the analysis of the coating studies, the focus was on the effect of individual parameters on the performance of the cooling system and the effect of using coated beds compared to packed beds. It was found that a fundamental problem in comparing the performance of different cooling systems is the use of different operating conditions during the tests. Therefore, the analysis compares the performance of the systems along with the most important thermodynamic cycle parameters for the latest studies.

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Tashiro, Y., M. Kubo, Y. Katsumi, T. Meguro, and K. Komeya. "Assessment of adsorption-desorption characteristics of adsorbents for adsorptive desiccant cooling system." Journal of Materials Science 39, no. 4 (February 2004): 1315–19. http://dx.doi.org/10.1023/b:jmsc.0000013937.11959.6a.

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Mohd Khanafiah, Muhammad Azim, Nur Adilah Sahafudin, and Fauziah Jerai. "Evaporator Performance for Water Refrigerant Adsorption Cooling System." Journal of Mechanical Engineering 19, no. 2 (April 15, 2022): 1–16. http://dx.doi.org/10.24191/jmeche.v19i2.19667.

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Adsorption Cooling System gives an alternative to the commercial vapor compression refrigeration cycles due to their benefits of having a very environmentally friendly and promising energy-saving system. An adsorption cooling system consists of four main components which are thecondenser, evaporator, expansion valve, and adsorption bed for the system to effectively function. One of the factors that affect the efficiency of the system is the performance of the evaporator itself as the system operates at sub-atmospheric pressure and the performance is mediocre when using conventional evaporators. Due to the low-pressure condition, hydrostatic pressure may affect the saturated temperature of the water refrigerant in a flooded type evaporator. Therefore, in this study, the performance of the evaporator was investigated based on the water height variation. The highest heat transfer coefficient and evaporation heat transfer rate are achieved when the water is set at the heat exchanger tube diameter level. Furthermore, 0.1 kg of silica gel adsorbent is used to obtain the maximum of 250 W/kg of Specific Cooling Power when the heat transfer fluid is set to 20 ºC.

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