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 Wysłany: Nie 4:47, 08 Maj 2011 Temat postu: ropa ed hardy The field of solar energy in HVAC ap |
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The field of solar energy in HVAC applications
Experimental study found that there is a maximum amount of ventilation can be the best chimney height and width ratio of the air channel; if the chimney width is too large, there is air in the channel center back. The results also found that when the distance between the gas in the 0.2 ~ 0.3m maximum mass flow rate; when the separation distance less than 0.1m, the import area had no effect on the mass flow rate; when the separation distance increased to O. 3 ~ 0.5m, if the area increases,[link widoczny dla zalogowanych], the gas flow rate increases. Meanwhile, the flow rate was increased with the increase of surface temperature. 4 Conclusion (1) solar heating and cooling can take advantage of solar technology exchange radiation than conventional heating and cooling systems more energy efficient. However, in order to ensure reliable operation of the system, often need additional boilers or electric heating devices, which to some extent, an increase of the initial equipment investment; (2) Trombe wall and vertical-type roof solar chimney collector, ventilation rate the size of its air channels the ratio of the width and height of the chimney is related to both the chimney there is an optimal aspect ratio problem; inclined roof solar chimney collector plate with the ventilation air channel width increases, there is no chimney the relationship between the best aspect ratio; paper analyzes the impact of 3 Although the typical size of solar chimney ventilation rate of the major factors, but for different wall materials (such as brick,[link widoczny dla zalogowanych], concrete, insulation materials) the size of the impact of ventilation rate has been no discussion, which will be reserved for future follow-up studies; (3) the use of solar energy from the current situation,[link widoczny dla zalogowanych], there is a common problem is the inefficient use of solar energy, only improve the efficiency of solar energy in order to eventually promote the application of solar energy. References: [1] Ge Shi, et al. Principles and applications of solar energy projects for a 【M]. Beijing: Academic Press, l988. 【2] Dongren Jie, Peng Gaojun. Solar thermal utilization project 【M]. Beijing: China Agricultural Science and Technology Press, 1996. 【3] weeks of the water flood. Solar energy applications in the refrigeration and air conditioning in the key technology fJ1. New energy research and utilization, 2o04, 3:32 ~ 37. 【4] Xie Ming, et al. Absorption of solar air conditioning technology advances and new ideas of new 『J]. Building Energy, 2OO3, 4:3 O ~ 33. [5] Jian-ming, et al. Solar-powered adsorption refrigeration Research fJ]. Energy Engineering, 2oo2, 6:1 ~ 4. [6】 Fang Cheng, et al. Enhanced solar ejector refrigeration system of IJJ. Solar Technology, 1994.2 (15): 185 ~ 189. ABOUCHAIR. S0larchimneyfl0rpmmotingcoolingVentilatinninsouthemAlriaBuil (1indJ]. Serv.Eng, ReS.Techn0I.1994, 15 (2): 81 ~ 93. Received: 20O9 an O3-16 Revised :2009-03-31Applicati0nOfS0larEnergyintheHVACFieldDUQiang (Czn elbow Peng em to 0Enengco. £, where gJ0DO Ferret,[link widoczny dla zalogowanych], cn Ⅱ) Abstract: Threemainapplicati0nsofsolarenergyintheHVACfieldwereintroduced, whicharesolarheating, s0larrefigerati0nandsolarventilation.Theadvantagesanddisadvantageofs0larheatingandrefrigerati0nweIleana1ysised.Thenthemainfactorslfectingtheventilationofdiflferentsolarchimneyswerebrienyanalyzed, whichcanbereferencedf0rdesign0fso1archimney.Keyw0rds: HVAC; solarheating; s0larrefrigerati0n; solarchimney; Ventilation Author: Du Qiang (1974 a), male, Nanyang, Henan, undergraduate , senior engineer, engaged in the design of HVAC,[link widoczny dla zalogowanych], research. 56l glazed paper
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