Journal articles: 'Solar air heating'

1

Kramer, Korbinian S., Christoph Thoma, Stefan Mehnert, and Sven Fahr. "Testing Solar Air-heating Collectors." Energy Procedia 48 (2014): 137–44. http://dx.doi.org/10.1016/j.egypro.2014.02.017.

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Chaichan, Miqdam T., Ali J. Ali, and Khaleel I. Abass. "Experimental Study on Solar Air Heating." Al-Khwarizmi Engineering Journal 14, no. 1 (April 8, 2018): 1–9. http://dx.doi.org/10.22153/https://doi.org/10.22153/kej.2018.07.008.

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Abstract A new type of solar air heater was designed, fabricated, and tested in Baghdad, Iraq winter conditions. The heater consists of two main parts. The horizontal section was filled with the black colored iron chip while the vertical part has five pipes filled with Iraqi paraffin wax. A fan was fixed at the exit of the air. Two cases were studied: when the air moved by natural convection and when forced convection moved it. The studied air heater has proven its effectiveness as it heated the air passing through it to high temperatures. The results manifest that using little air movement makes the temperatures, stored energies, and efficiencies of the two studied cases converge. The suitable solar intensity of Baghdad city makes the use of solar air heater suitable to reduce the electricity and fossil fuels consumption.

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Hall, Richard, Xiaoxin Wang, Raymond Ogden, and Lucia Elghali. "Transpired solar collectors for ventilation air heating." Proceedings of the Institution of Civil Engineers - Energy 164, no. 3 (August 2011): 101–10. http://dx.doi.org/10.1680/ener.2011.164.3.101.

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Tan, Melih. "Opposite sunspaces passive solar air heating system." Solar Energy 60, no. 3-4 (March 1997): 127–34. http://dx.doi.org/10.1016/s0038-092x(97)00014-5.

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Raju, J. Naga. "Comparative study of air heating solar collectors." International Journal of Energy Research 15, no. 6 (August 1991): 469–71. http://dx.doi.org/10.1002/er.4440150606.

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Choudhury, Pradyumna Kumar, and Debendra Chandra Baruah. "Solar air heater for residential space heating." Energy, Ecology and Environment 2, no. 6 (October 23, 2017): 387–403. http://dx.doi.org/10.1007/s40974-017-0077-4.

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Ma, Kun Ru, Lu Jin, and Li Juan Yan. "Feasibility Study about Solar Energy-Air Source Heat Pump System in Cold Region Rural Residential Applications." Applied Mechanics and Materials 672-674 (October 2014): 113–16. http://dx.doi.org/10.4028/www.scientific.net/amm.672-674.113.

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This paper proposes a solar-air compound source heat pump system, for the rural residential area of Hebei and independent villas. The system can realize heating in winter and refrigerating in summer, and demand of heat water. This paper simulates and analyzes the winter heating situation of this system. The entire heating season, heat collecting efficiency of the solar collector is 0.45 in average, and solar guarantee rate is 46%. Solar-air compound source heat pump system average COP is 4.5 in the heating season, increased by 26% than the air source heat pump system run separately , and the fluctuation range is small. Throughout the heating season, the contribution of solar collectors is 59%, the contribution of air source heat pump is 41%.

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Fieducik, Jolanta. "The use of solar radiation for generating heat in a solar air collector in northern Poland." E3S Web of Conferences 100 (2019): 00016. http://dx.doi.org/10.1051/e3sconf/201910000016.

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This article analyzes the use of solar radiation for generating heat in a simple solar air collector built in a laboratory. The structure of the collector and the equipment for measuring physical parameters were described. The aim of the study was to analyze the operating parameters and the thermal efficiency of a solar air collector in northern Poland. Various applications of solar air collectors were discussed. Solar air collectors can be used for heating, ventilating and drying indoor premises and for heating water.

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Mittal, V., KS Kasana, and NS Thakur. "The study of solar absorption air-conditioning systems." Journal of Energy in Southern Africa 16, no. 4 (November 1, 2005): 59–66. http://dx.doi.org/10.17159/2413-3051/2005/v16i4a3103.

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An air-conditioning system utilizing solar energy would generally be more efficient, cost wise, if it was used to provide both heating and cooling requirements in the building it serves. Various solar powered heating systems have been tested extensively, but solar powered air conditioning systems have received very little attention. Solar powered absorption cooling systems can serve both heating and cooling requirements in the building it serves. Many researchers have studied the solar absorption air conditioning system in order to make it economically and technically viable. But still, much more research in this area is needed. This paper will help many researchers working in this area and provide them with fundamental knowledge on absorption systems, and a detailed review on the past efforts in the field of solar absorption cooling systems with the absorption pair of lithium-bromide and water. This knowledge will help them to start the parametric study in order to investigate the influence of key parameters on the overall system performance.

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Wang, Hai Ying, Song Tao Hu, and Jia Ping Liu. "Joint Application of Solar Water Heating System and Air-Conditioning System in a Dormitory Building." Advanced Materials Research 171-172 (December 2010): 215–18. http://dx.doi.org/10.4028/www.scientific.net/amr.171-172.215.

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Solar water heating system is used to supply hot water all-year-round for a new dormitory building. Flat solar energy collectors are mounted on the roof. The hot water tank and pumps are installed together with the air conditioning equipments in the plant room. Air cooled heat pump is used to provide cooling in summer, and high temperature water from boiler room (in old building) is used as heat source in winter. Usually auxiliary heating is necessary to improve the stability and reliability of solar water heating system. In this case, we take full use of the equipment of air conditioning system instead of electricity as auxiliary heating resources. In this paper, we introduced the design of the solar water heating system and the auxiliary heating method by air conditioning systems. The control strategies to fulfill all the functions and switch between different conditions are also introduced.

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Liu, Yin, Guang Hui Zhou, and Jing Ma. "Experimental Study of a Solar Assisted Air Source Heat Pump in Heating Condition." Advanced Materials Research 243-249 (May 2011): 4909–12. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.4909.

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In order to improve the performance of air source heat pump in low temperature conditions, designed a solar assisted air source heat pump with the gas-liquid bio-sources heat exchanger. The heat pump can work with solar heat water and air as a heat source at same time. The heating performance of the heat pump in low temperature conditions was tested. The results show that, in comparison to the single air source heat pump, the heating performance of the solar assisted air source heat pump is improved remarkably. When the solar water flow is at 0.6m3/h and the outdoor environment temperature is -7°C, the heating capacity raised about 38% and the COP raised about 30%. When the outdoor environment temperature is -15°C, the heating capacity and the COP all raised more than 50%.

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Qiu, Lin, Yue Zou, and Li Huang. "Simulation Analysis on a Special Air-Heating Collector." Applied Mechanics and Materials 88-89 (August 2011): 642–46. http://dx.doi.org/10.4028/www.scientific.net/amm.88-89.642.

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It is the numerical simulation of the thermal properties of a special polygonal collector plate with hole in air-heating. With the ray-tracing solar load model provided by Fluent, use radiation heat transfer equation to solve the solar radiation, and then consider loading radiation heat into the source terms of the energy equation. In the transition season, under the mode of operation of complete new wind, through the study of air flow and heat transfer in the collector box, the paper discusses and analyzes the temperature and velocity fields, thermal effects, as well as the wind speed and solar radiation and other related factors in different collector modules of the collector plate.

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Sawhney, R. L., N. K. Bansal, and M. S. Sodha. "Solar passive heating through a thermosyphon air panel." International Journal of Energy Research 12, no. 2 (March 1988): 217–25. http://dx.doi.org/10.1002/er.4440120204.

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Bououd, M., O. Hachchadi, K. Janusevicius, V. Martinaitis, and A. Mechaqrane. "Solar air heating system: design and dynamic simulation." IOP Conference Series: Materials Science and Engineering 353 (May 2018): 012004. http://dx.doi.org/10.1088/1757-899x/353/1/012004.

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15

Abbud, I. A., G. O. G. Löf, and D. C. Hittle. "Simulation of solar air heating at constant temperature." Solar Energy 54, no. 2 (February 1995): 75–83. http://dx.doi.org/10.1016/0038-092x(94)00101-i.

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Ghasemi, S. E., M. Hatami, and D. D. Ganji. "Analytical thermal analysis of air-heating solar collectors." Journal of Mechanical Science and Technology 27, no. 11 (November 2013): 3525–30. http://dx.doi.org/10.1007/s12206-013-0878-0.

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Maroulis, Z. B., and G. D. Saravacos. "Solar heating of air for drying agricultural products." Solar & Wind Technology 3, no. 2 (January 1986): 127–34. http://dx.doi.org/10.1016/0741-983x(86)90024-x.

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Panaite, Carmen Ema, Aristotel Popescu, Oana Dodun, and Konstantinos Papakostas. "Air Conditioning: A Renewable Energy Perspective." Applied Mechanics and Materials 809-810 (November 2015): 694–99. http://dx.doi.org/10.4028/www.scientific.net/amm.809-810.694.

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Global challenges related to fossil fuels depletion, climate changes and growth of population with a higher comfort demand require a significant change of heating and cooling perspective in the building sector, from currently mainly fossil combustion to renewable energy sources. Solar heating and cooling may have an important role in providing an economically feasible and environmentally sustainable long-term solution to these essential requirements. This paper presents a brief overview on the available solar cooling technologies focus on thermally driven methods. A market study is also carried out and the potential of solar cooling is emphasized.

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Ouyang, Li, and Wei Liu. "Comparison between Localized Underfloor Air Distribution and Ceiling Air Supply for Porous Solar Wall Heating System." Applied Mechanics and Materials 209-211 (October 2012): 1707–14. http://dx.doi.org/10.4028/www.scientific.net/amm.209-211.1707.

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In this paper, the two physical models for the porous solar wall heating system with localized underfloor air distribution (UFAD), and the one with ceiling air supply are established, respectively.Based on Brinkman-Forchheimer Extended Darcy and energy two-equation models for saturated porous medium, the heat transfer and flow characteristics of two kinds of system are simulated and analyzed by using numerical simulation. The results show that the localized underfloor air distribution (UFAD) has better performance on flow and temperature distribution, utilization of solar power than the localized ceiling air supply for the porous solar wall heating system.

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Oztop, Hakan F., Fatih Bayrak, and Arif Hepbasli. "Energetic and exergetic aspects of solar air heating (solar collector) systems." Renewable and Sustainable Energy Reviews 21 (May 2013): 59–83. http://dx.doi.org/10.1016/j.rser.2012.12.019.

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Русу, О. П., Д. О. Гай, and А. Ю. Устенко. "ВИКОРИСТАННЯ СОНЯЧНИХ КОЛЕКТОРІВ У СИСТЕМАХ ОБІГРІВУ ПРИМІЩЕНЬ." Bulletin of the Kyiv National University of Technologies and Design. Technical Science Series 124, no. 4 (November 2, 2018): 26–33. http://dx.doi.org/10.30857/1813-6796.2018.4.3.

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Determination the easiest ways to use solar collectors for building heating. Analysis of existing technical solutions for the use of solar collectors for building heating by the criterion of simple integration into existing engineering systems of buildings. Two ways of using solar collectors for building heating making easy to integrate into existing engineering systems of buildings are proposed. The use of solar air collectors for building heating both as autonomous devices and as part of integrated heating and ventilation systems is substantiated. The integration of solar collectors into existing air conditioning systems using Freon as a coolant, which will increase their efficiency during the heating season, is substantiated. The proposed methods of using solar collectors can be the basis for the development of new devices and systems for building heating, which can reduce the quantity of organic fuels and the level of environmental pressure on the environment.

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Wu, Jin Shun, Song Pan, Jun Wei, Hong Wei Liu, Yi Xuan Wei, Ju Bao Zhao, Hui Zhang, and Bing Xue Wang. "Energy Saving Analysis on Solar Capillary Radiation Heating System." Applied Mechanics and Materials 448-453 (October 2013): 2807–14. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2807.

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Radiation capillary used as air conditioning terminal lower the demand of heating water temperature. In additional, solar collectors could also supply amount of low grade energy for heating. Meanwhile, solar is a kind of renewable, sustainable and environment friendly energy. It will save a massive of conventional energy if make full use of solar for heating. In this paper, an experimental system made of solar collector, capillary network and pump was built up and tested. According to thermal load of experimental room, both solar collector area and capillary network area are calculated, and circulating water temperature was analyzed in detail. A summary is given about characteristics of heat storage and release of solar collector, indoor air temperature varying and amount of energy saving. The key factors affect efficiency of collector includes water volume, water temperature in tanker and indoor air temperature. The results show that the solar system can well meet the heating demand and the effect of energy saving is very significant compared to common heating system.

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Lee, Haksung, Akihito Ozaki, Younhee Choi, and Muhammad Iqbal. "Performance Improvement Plan of Air Circulation-Type Solar Heat-Storage System Using Ventilated Cavity of Roof." Energies 14, no. 6 (March 14, 2021): 1606. http://dx.doi.org/10.3390/en14061606.

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Indoor solar-heating systems that use ventilated roofs have drawn attention in recent years. The effectiveness and efficiency of such air-heating systems vary depending on the design and operation methods. In Japan, by introducing outside air into a ventilated roof cavity and circulating the air indoors, systems that simultaneously obtain ventilation, solar heating, and heat-storage effects have been actively developed. The conventional systems intake a large volume of outside air to increase the solar heat collection effect. However, there is a risk of heat loss and over-drying when a large amount of cold dry air during winter is introduced. In this paper, plans are presented for improving these solar heating and heat-storage effects by preventing over-drying using indoor air circulation via ventilated cavities in the roof and indoor wall. By comparing the results of the proposed system with those of the conventional system via numerical simulation, the heating load is found to be reduced by 50% or more by circulating indoor air to the ventilated roof and storing the heat in the indoor wall. Moreover, an increased relative humidity of approximately 10% was confirmed by reducing the intrusion of the outside air and keeping the moisture indoors.

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Hu, Fen E., and Zhi Juan Wang. "Experimental Study of Notoginseng Drying Based on a Solar Air Heating System." Applied Mechanics and Materials 71-78 (July 2011): 2073–76. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.2073.

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A solar air drying system including solar air collector, drying cabinet and air blower for notoginseng drying has been constructed and tested. Two identical air solar collectors with two air channels, V-groove absorption heat plates and a single glass cover have been employed. The results of test show that the solar air collectors can obtain a good thermal performance in winter season. When the air flow mass rate is fixed at 0.0597kg·s-1, the maximum values of thermal efficiency and outlet air temperature are 76.0% and 62.2°C, respectively. The experimental analysis between two sampling notoginseng drying suggests that the solar drying is very effective, and the drying time has been shorten to about 440 minutes from 990 minutes of the traditional drying by sun. It is also observed that using the solar drying system notoginseng has a higher quality than traditional drying method.

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Turner, R. H., Geng Liu, Y. A. Cengel, and C. P. Harris. "Thermal Storage in the Walls of a Solar House." Journal of Solar Energy Engineering 116, no. 4 (November 1, 1994): 183–93. http://dx.doi.org/10.1115/1.2930080.

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Residential winter thermal energy storage features water encapsulated into 3-in. (7.6-cm) diameter plastic pipes, mounted into conventional stud wall cavities of a house. With an air solar collector, solar-heated air can be passed through the stud cavities, heating the water. During the discharge mode, this water loses its heat directly to the house, and the radiating walls allow the residents to feel warm even at lower interior air temperatures. Empirical and theoretical component performance data are reported for the waterfall thermal energy storage unit. The interaction between a large air-heating solar collector and the waterfall thermal energy storage is considered for the winter heating mode. The collector-storage thermal integration analysis is detailed for a charging flow rate of 40 cfm per cavity. A simpler but reasonably accurate integration analysis is illustrated for 10 cfm cavity flow rate. Performance parameters indicate that the waterfall thermal energy storage approach is very compatible with a solar air heater.

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Zhang, Hong Chen, and En Jiang Xu. "Experimental Investigation of a Heat Storage Solar Water Heater-Water/Air Source Heat Pump Double Stage Coupling Capillary Network Heating System." Applied Mechanics and Materials 316-317 (April 2013): 80–83. http://dx.doi.org/10.4028/www.scientific.net/amm.316-317.80.

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this paper constructs a new type experimental investigation of a heat storage solar water heater -water/air source heat pump double stage coupling capillary network radiation heating system, The system is a combination of a solar clean , reproducibility and water/air source heat pump energy saving property, is a kind of energy saving, pollution-free energy efficient system. In qinhuangdao local climatic conditions test capillary network radiation heating, water source heat pump, air source heat pump operation parameters, analyzes the system as a whole, it is concluded that the operation of heat storage solar water heater - water/air source heat pump double stage coupling capillary network radiation heating system is suitable for in qinhuangdao climate condition in application.

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Bejan, Andrei-Stelian, Abdelouhab Labihi, Cristiana Croitoru, and Tiberiu Catalina. "Air solar collectors in building use - A review." E3S Web of Conferences 32 (2018): 01003. http://dx.doi.org/10.1051/e3sconf/20183201003.

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In the current energy and environmental context it is imperative to implement systems based on renewable energy sources in order to reduce energy consumptions worldwide. Solar collectors are studied by many years and many researchers are focusing their attention in order to increase their efficiency and cost-effectiveness. Water solar collectors are often implemented for domestic hot water, heating or industrial processes and already have a place on the market. A promising system which is not yet widely known is represented by air solar collectors that could represent an efficient way to use the solar energy with a lower investment cost, a system that can be used in order to preheat the fresh air required for heating, drying, or to maintain a minimum temperature during winter. This paper presents a comprehensive literature review on air solar collectors used mainly in buildings, acting as a solar wall. Air solar collectors are roughly classified into two types: glazed and opaque. The present study comprises the solar collector classification, applications and their main parameters with a special focus on opaque solar collectors.

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Pelece, I., and P. Shipkovs. "Theoretical and Experimental Investigations of Cylindrical Air-Heating Solar Collector." Latvian Journal of Physics and Technical Sciences 53, no. 3 (June 1, 2016): 11–21. http://dx.doi.org/10.1515/lpts-2016-0017.

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Abstract Solar energy is used not only at low latitudes, where it is available at large amounts, but also at higher latitudes, where height of sun and irradiance are significantly lower. On the other hand, the length of day at higher latitudes is longer in summer than at low latitudes, and also the path of the sun is longer. The present research deals with seeking for new shapes of solar collectors capable of receiving more solar energy. For designing and evaluating new shapes of solar collectors, it is necessary to have new methods for simple calculations of energy received from the sun by surface of any shape and direction. Such a method is explained in the present paper. Based on calculations by the proposed method, a new form of solar collector – a cylindrical collector – has been worked out. This collector is intended for air heating, but main principles can also be used for water heating, and even for photovoltaics. A cylindrical collector receives more energy in the morning and evening than a flat one, but at midday power of both collectors is equal, if effective areas are equal. Daily energy sum of the cylindrical solar collector is 1.5 times greater than that of the flat one.

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Pasichnyk, P., К. Gaba, and М. Kyrychenko. "Experimental research of electrical characteristics combined solar-electric air heater." Ventilation, Illumination and Heat Gas Supply 36 (February 8, 2021): 15–20. http://dx.doi.org/10.32347/2409-2606.2021.36.15-20.

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The development and improvement of solar equipment is a necessary step in the development of solar heating systems. One of the ways to develop solar air heaters is to use new materials for the production of solar absorbers. This expands the possibility of using nozzle and capillary-porous materials in contrast to liquid solar collectors. Development and research of air heating systems with equipment made of modern textile materials is relevant. For the manufacture of absorbers it is advisable to use textile materials. This will reduce the cost of solar collectors, as well as reduce their weight and capital costs. The absorber meets requirements for both solar thermal collectors and electric heaters: high absorption capacity of solar radiation; developed heat transfer surface; relevant physical properties: low mass, resistance to ultraviolet radiation, thermal resistance, low cost for cheaper solar system; sufficient electrical resistance. A combined solar-electric air heater has been developed, which combines two main elements of any solar system – a solar heat collector and an additional heat source, the absorber of which is made of carbon graphite knitted fabric. This reduces its cost and mass and allows them to be used on existing heating facilities without the construction of bulky supporting structures to accommodate solar fields. The combined solar-electric air heater can be used as an independent heat generator for heat supply systems. To use the proposed solar-electric air heater, it is necessary to heat its absorber with an electric current, so the material from which it is made must be electrically conductive, but have sufficient electrical resistance. The use of carbon-graphite knitted fabric allows the use the direct heating of the solar energy absorber by electric current due to the corresponding electrical characteristics. This article presents the results of an experimental study of the electrical resistivity of carbon-graphite knitted fabric. These studies allow determining the electrical power of the device regardless of the size of the device. The research results presented in the article can be used only for a certain type of carbon graphite knitted fabric.

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Choi, Youngjin, Masayuki Mae, Hyunwoo Roh, and Wanghee Cho. "Annual Heating and Hot Water Load Reduction Effect of Air-Based Solar Heating System Using Thermal Simulation." Energies 12, no. 6 (March 19, 2019): 1054. http://dx.doi.org/10.3390/en12061054.

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This study examines the effect of an air-based solar heating system that can be used directly for convection heating while minimizing thermal leakage. To compare the effect of reducing the heating and hot water load when using the system, a simulation model of the system is created, and annual load calculations are performed. The results of the simulation study show that the annual heating load is reduced by 5.39 GJ and the hot water load is reduced by 10.32 GJ when using the air-based solar heating system, resulting in a 48.3% annual load reduction effect. In addition, by analyzing the thermal balance of the indoor space based on the application of the air-based solar heating system, the problem of the existing system is elucidated. In order to improve the performance of the system as shown in the thermal balance, it is necessary not only to improve the performance of the collector, but also to review its thermal storage, insulation, and proper control.

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Venkatesh, R., and W. Christraj. "Performance Analysis of Solar Water Heater in Multipurpose Solar Heating System." Applied Mechanics and Materials 592-594 (July 2014): 1706–13. http://dx.doi.org/10.4028/www.scientific.net/amm.592-594.1706.

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Of all the renewable sources of energy available, solar thermal energy is the most abundant one and is available in both direct as well as indirect forms. In order to increase the thermal performance of solar collectors, the multipurpose solar collectors were investigated experimentally by the storage tank of the conventional solar water collector is modified as riser tubes and header. It is fitted in the bottom of the solar air heater as an absorber in the normal air heater. The thermal performance of thermosyphon flat plate solar water heater was investigated on both summer and winter seasons. The maximum daily average of 72.05%, 0.0316 kg/sm2and 0.873 m/s were recorded for the relative humidity, mass flow rate and wind speed at summer season respectively. Corresponding figure at for winter was 19.5 % 0.0295 kg/sm2and 0.722 m/s respectively. A minimum daily average of 11.23% and 0.384 m/s for the relative humidity and wind speed respectively. These results show that the mass flow rate obtained was a function of solar radiation and relative humidity. The less humid the ambient air becomes, the higher the heat gained by the system hence higher water flow rate. The maximum value of relative humidity obtained is due to low solar radiation on winter season. The heat removal factor (FR) and collector efficiency factor (Fo) were found to be higher for Multipurpose solar water heater as compared to conventional solar water heaters for summer as well as winter season. These factors for Multipurpose solar water heater were more during summer and winter.

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Majeed, Majid H., and Ibrahim S. Resen. "EXPERIMENTAL STUDY OF SOLAR CHIMNEY PERFORMANCE FOR PASSIVE HEATING." IRAQI JOURNAL FOR MECHANICAL AND MATERIALS ENGINEERING 18, no. 3 (November 6, 2018): 375–88. http://dx.doi.org/10.32852/iqjfmme.v18i3.170.

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An experimental investigation on solar chimney used for heating under climate of Iraqis carried out. Experiments were conducted on the chimney installed on vertical wall withabsorber plate placed at the front side of the air gap. The solar chimney attached to room ofdimensions (2.5×1.29×1.07) m. The chimney is studied to measure the effect of the air gapwidth with constant height of (1.07 m). Three widths are tested, namely, 0.2 m, 0.3 m and0.4 m. The experimental results showed that the solar chimney can achieve about (13 °C)difference in temperature between indoor and outdoor as well as it gives acceptabledifference in partial cloudy days. The results also indicated that the best performance ofsolar chimney is with 0.3m air gap width.

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Bokor, B., and L. Kajtár. "Transpired solar collectors in building service engineering: Combined system operation and special applications." International Review of Applied Sciences and Engineering 9, no. 1 (June 2018): 65–71. http://dx.doi.org/10.1556/1848.2018.9.1.9.

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One of the easiest ways to integrate renewable sources of energy into the heat producing system of a building is the application of transpired solar collectors. They are widespread in North America, where air heating is a common heating alternative, but they are gaining bigger share in the European solar thermal market nowadays. Their simple construction, maintenance-free operation and high working efficiency result in low capital and operating costs. The combination of TSC with other system elements results in additional benefits. Preheating the combustion air of large-scale boilers results in the increase of boiler efficiency and thus the reduction of natural gas consumption and CO2 emission. Whether to choose TSC or heat recovery unit for a certain air conditioning system has to be investigated by examining efficiency-influencing factors of both systems. Besides solar air heating, transpired solar air collectors can reduce the cooling demand on a building. Roof ventilation and nocturnal radiant cooling are two alternatives, which are being presented in the current paper.

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KITANO, Hiroaki, and Kazunobu SAGARA. "SIMPLIFIED DESIGN METHOD FOR AIR-BASED SOLAR HEATING SYSTEM." Journal of Environmental Engineering (Transactions of AIJ) 69, no. 582 (2004): 45–52. http://dx.doi.org/10.3130/aije.69.45_4.

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Pottler, K., C. M. Sippel, A. Beck, and J. Fricke. "Optimized finned absorber geometries for solar air heating collectors." Solar Energy 67, no. 1-3 (July 1999): 35–52. http://dx.doi.org/10.1016/s0038-092x(00)00036-0.

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Joudi, Khalid A., and Ammar A. Farhan. "Greenhouse heating by solar air heaters on the roof." Renewable Energy 72 (December 2014): 406–14. http://dx.doi.org/10.1016/j.renene.2014.07.025.

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Sodha, M. S., S. K. Bharadwaj, and Ashvini Kumar. "Technoeconomic optimization of a hybrid solar air-heating system." International Journal of Energy Research 12, no. 4 (October 1988): 739–50. http://dx.doi.org/10.1002/er.4440120412.

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Kramer, Korbinian. "Interaction of Regulation and Innovation: Solar Air Heating Collectors." Energy Procedia 30 (2012): 1311–21. http://dx.doi.org/10.1016/j.egypro.2012.11.144.

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39

Abdullah, A. S., and M. K. Bassiouny. "Performance of cylindrical plastic solar collectors for air heating." Energy Conversion and Management 88 (December 2014): 88–95. http://dx.doi.org/10.1016/j.enconman.2014.08.012.

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Akhan, Hacer, and Dogan Eryener. "Building integrated solar air heating with waste heat utilization." Energy Conversion and Management 157 (February 2018): 136–45. http://dx.doi.org/10.1016/j.enconman.2017.12.007.

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Ni, Na. "Thermodynamic Features and Design of Solar-Air Source Composite Heating System." International Journal of Heat and Technology 38, no. 4 (December 31, 2020): 967–75. http://dx.doi.org/10.18280/ijht.380424.

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Facing the huge energy consumption of buildings, it is highly practical to study every aspect of energy-saving technologies for heating and cooling devices. Solar thermal technology and air/water source heat pump are two popular energy-saving technologies, which could be combined into a composite heating system with good energy-saving effect and efficiency. This paper constructs a solar-air source composite heating system, analyzes its thermodynamic features, and builds up the corresponding thermodynamic model. In addition, the authors modeled the daytime and nighttime heat balances, as well as the monthly cumulative heat supply for the constructed system. Finally, a dual-tank composite heating system was designed with independent heat supply/storage. The proposed models and system were proved valid and scientific through experiments.

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Qiu, Lin, Yue Zou, Li Huang, and Geng Ren. "Experimental Research of Solar Wall in Building Application." Applied Mechanics and Materials 128-129 (October 2011): 1456–59. http://dx.doi.org/10.4028/www.scientific.net/amm.128-129.1456.

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The paper investigated the efficient model of solar wall and the operation modes of solar wall system on buildings application, The construction of efficient solar wall was devised and experiment studied the operation effect. In order to find out the relationship between solar radiation and outlet air temperature, the air temperature change per unit solar radiation intensity (▽) was introduced. Study given: the system function or use of shade structures and architecture integration measures, relative to the building directly by the sun exposure, the surface temperature of building with the efficient solar wall can be achieved a more substantial cooling; the same time the system can be improved through natural convection air-conditioned room air quality will not result in excessive waste of energy. Solar radiation is the decisive factor in the process of heating air. to meet the requirement of indoor heating, the reasonable range of ▽ is 5.63-6.35, the optimum system wind velocity would be 3 m/s-7m/s.

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Arkar, Ciril, and Sašo Medved. "Optimization of latent heat storage in solar air heating system with vacuum tube air solar collector." Solar Energy 111 (January 2015): 10–20. http://dx.doi.org/10.1016/j.solener.2014.10.013.

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Li, Yantong, and Gongsheng Huang. "Development of an integrated low-carbon heating system for outdoor swimming pools for winter application." E3S Web of Conferences 111 (2019): 03031. http://dx.doi.org/10.1051/e3sconf/201911103031.

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This paper presents an integrated low-carbon heating system for outdoor swimming pools, which aims to make outdoor swimming pools in subtropical climates available in winter season with economic feasibility. The heating system consists of solar heat collectors, air-source heat pumps, and PCM storage tanks. The solar heat collectors collect heat from solar radiation; while the air-source heat pumps collect heat from ambient air. The PCM storage tanks are used to store the heat collected by the air-source heat pumps during off-peak hours and supply heat during the open hours of outdoor swimming pools when the solar heat is insufficient. We investigated the collaboration of the two heating sources at the design stage regarding energy and economic performance using numerical simulation. Three cases with different percentage of heat contribution from these two sources were studied and compared using the indices of initial investment, operational cost, energy use and thermal comfort unmet percentage. Results were analysed to show how the percentages of the heat contribution from the two sources affect the energy and economic performance of the proposed heating system.

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Wang, Lin Jun, Zhang Wei Gao, Dong Zhang, and Wei Liu. "A Summary Research of the Solar Air Collector." Advanced Materials Research 953-954 (June 2014): 39–42. http://dx.doi.org/10.4028/www.scientific.net/amr.953-954.39.

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The solar air collector is a kind of commonly solar thermal device, which has simple structure and low cost. And it is widely used in building heating, product drying and other areas. The paper broadly introduces working principles, advantages and disadvantages of the solar air collector. And it emphasizes to introduce research status of the solar air collector, at same time the paper gives some opinions about the future developing direction of the solar air collector.

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Shankar, Gade Bhavani, and P. S. Kishore. "PERFORMANCE ANALYSIS OF A CONVENTIONAL AIR HEATER." International Journal of Research -GRANTHAALAYAH 5, no. 4 (April 30, 2017): 320–33. http://dx.doi.org/10.29121/granthaalayah.v5.i4.2017.1826.

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Solar energy constitutes one of the main alternatives for facing the energy problems of the future. Solar air heaters are used for applications at low and moderate temperatures. Such as crop drying, timber seasoning, space heating, and drying agriculture products. Artificial geometry applied on the absorber plate is the very efficient method to improve thermal performance of solar air heaters. The thermal efficiency of solar air heaters is generally poor due to low heat transfer coefficient between the absorber plate and air flowing in the collector. Thermal performance of the conventional solar air heater was studied under varying solar and ambient conditions in different months. At day time the solar heating system stored the thermal solar energy as sensible and latent heat. A parametric study was done for 10 months for the climatic conditions of Visakhapatnam. The effect of change in the tilt angle, length and breadth of a collector and mass flow rate on the temperature of collector has been studied. The length of the collector is 2.1m and width of the collector is 1.1 m. the performance analysis of system shows potential of improving the thermal efficiency range is 31% to 47% .From the obtained results, graphs are drawn to assess the performance analysis of a conventional air heater.

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Baskar, P., and G. Edison. "A Review of Mathematical Models for Performance Analysis of Hybrid Solar Photovoltaic - Thermal (PV/T) Air Heating Systems." Advanced Materials Research 768 (September 2013): 29–39. http://dx.doi.org/10.4028/www.scientific.net/amr.768.29.

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In recent years, many researches are being carried out on the integration of solar thermal systems with solar photovoltaic modules in many countries for heat generation along with electricity generation. The electrical energy generated by the solar PV modules is utilized for the operation of fan. The hybrid solar photovoltaic - Thermal (PV/T) technology provides an opportunity to enhance the electrical and thermal performances. This paper deals with analysis of various parameters which affect the electrical and thermal performances of different types of hybrid solar photovoltaic - Thermal (PV/T) air heating systems. These systems deliver more useful energy per unit area of the heater than that of individual solar PV and solar thermal systems and can be used for preheating the air for many applications such as drying of agricultural products, space heating and industrial process heating. The performance comparisons among the various models reveal that the model III in which the air flows above and below the absorber plate is most suitable for converting the solar energy into high quality electrical energy and low quality heat energy.

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Bokor, Balázs, Hacer Akhan, Dogan Eryener, and László Kajtár. "The Potential of Solar Air Heating in the Turkish Industrial Sector." Periodica Polytechnica Mechanical Engineering 63, no. 1 (November 19, 2018): 57–66. http://dx.doi.org/10.3311/ppme.13028.

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Transpired solar collector (TSC) systems are simple solutions for the preheating of ventilation air with solar energy. Their performance is a function of several environmental factors, so the climatic conditions of the location play an important role. In this paper, the effect of different climatic zones on the thermal performance of the TSC is investigated. To exclude other sources of influence, the same reference industrial building is examined in four Turkish locations (Antalya, Istanbul, Ankara and Sivas) representing different climatic conditions. RETScreen simulation is carried out for all four regions to obtain the drop of conventional heating requirement in case absorber azimuth of 0°, 45° and 90°. To illustrate the performance, temperature rise, heating energy savings and annual solar fraction are presented. Generally, it can be stated that a location with cold climate and high solar radiation at the same time benefits most from the use of a TSC system. A mathematical correlation has been found showing the solar fraction's dependence on solar radiation and heating degree days. Finally, simulation results have been compared to a set of measurement data from an industrial building's TSC system near Istanbul.

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Diana, Lohdy, Arrad Ghani Safitra, Muhammad Syarifuddin Firmansyah, and Mishbaakhus Prana Zinedine. "Experimental Study of Artificial Solar Air Heater Using Trapezoidal Wave Plate." R.E.M. (Rekayasa Energi Manufaktur) Jurnal 4, no. 2 (December 30, 2019): 135–48. http://dx.doi.org/10.21070/r.e.m.v4i2.806.

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A solar air heater is needed for the drying process, especially in Indonesia. It means the researches to produce a solar air heater that had high performance is necessary. This research analyses the performance of solar air heater using trapezoidal absorber plate with variation of folded angle 83˚, 85˚, and 87˚. The research carry out artificial experimentally using halogen lamp as a solar simulator. The working principle of solar air heating begins with an induction fan sucking air to enter through the honeycomb then flowing into the air heating duct. The process of heat transfer occurs in a halogen heat lamp passed by the transparent glass and then absorbed by the absorbent plate. This heat will heat the air flowing in the air heating pipe to be transmitted into the drying cupboard. The experiment used several variations of the mass airflow rate 0.022 until 0.051 kg/s and intensity 850, 900, dan 950 W/m2. Temperature measurement is carried out by installing a thermocouple at several points that have been determined. The best performance produced by the wave plate-shaped trapezoidal wave heaters 83˚ when I = 950 W/m2 air mass flow rate 0.022 kg/s with the temperature of the absorbent plate 87 ˚C, the temperature of the exit air 43.2 ˚C, the difference in the rise in air temperature 15.2 ˚C, and when I = 950 W/m2 air mass flow rate 0.051 kg/s the useful heat generated by the air heater 527 Watt, and thermal efficiency 96.8%.

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Yang, Bin, and Shu Guang Jiang. "Improved Passive Solar Hot-Air Heating of Residential Design and Research." Applied Mechanics and Materials 178-181 (May 2012): 88–91. http://dx.doi.org/10.4028/www.scientific.net/amm.178-181.88.

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Climate characteristics of Shihezi area, present passive solar building planning and design of residential and architectural design requirements; Through the improvement of traditional passive solar heating system, and adopt collection hot wall completely cover housing south wall and other measures to improve thermal efficiency sets. To pilot project as an example, the use of SLR method calculated, the system, in Shihezi the coldest month is January, solar fraction can reach 31%.

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Journal articles on the topic 'Solar air heating'

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