应用于太阳能空调的中温热管研究.doc

611000200670269 10487 2008 5 26 A Thesis Submitted in Partial Fulfillment of the RequirementsFor the Degree of Master of EngineeringStudy on the Moderate Temperature Heat Pipe inSolar Air-ConditionCandidate : Zheng PanMajor : Mechanical Manufacturing and AutomationSupervisor: Assoc.Prof. Bao JianbinHuazhong University of Science & TechnologyWuhan, Hubei 430074, P. R. ChinaMay, 2008 AbstractA heat pipe is accessory which relying on its change of the internal liquid phase toachieve the heat exchange. It works with advantages like high coefficient of heat exchange,uniform temperature distribution, rapid thermal response to change, compact structure andenergy saving. This paper meet the development requirements of solar energy technology,through the study on heat exchange mechanism of heat pipe, using a computer model basedmethod on product to design the heat pipe which used in solar air-conditioning system.Heat pipe works with high efficiency of heat exchangein the process of design, we givefull consideration to factors such as the choice of liquidthermal and structural parametersand material selection.This paper studies on discussing the factors which influence of thethermal properties thorough the simulation of heat pipe working process, and analyzes themain factors on the efficiency of the heat pipe which providing a theoretical basis for designWe optimized the structure parameters in the process of structural design of pipe. With allfactors considered comprehensively, the paper giving the design of a bran-new heat pipewhich can be used in solar air-condition.This paper combines the sunlight and heat pipe device to design a new type of solarair-condition with aimed at resolving the current consumption of tradition resources whichpollute the environment and other issues. The new design of solar air-conditioning system willtrack the sun accuracy through using Fresnel lens and highly efficient heat pipe as a collectorand lithium bromide absorption refrigeration as the heat transfer components. Through theapplication of gather and the optimal design of heat pipe to improve overall efficiency of solarair-condition.The paper stresses on design of and heat pipe and air-conditioning system with efficiencyas the ultimate goal, completing a heat pipe which theoretically meet the requirements of solarair-conditioning system and the design of solar air-condition meeting the functionalrequirements and energy-saving purpose.Key wordsModerate temperature heat pipe, Solar, Air-condition, Absorption refrigeration ABSTRACT1. . 11.1. . 11.2. . 21.2.1. . 21.2.2. . 31.2.3. . 61.3. . 71.4. . 91.5. . 92. . 102.1. . 102.1.1Cotter . 102.1.2 . 112.1.3 . 132.2. . 142.2.1 . 142.2.2 . 162.2.3 . 182.3. . 202.3.1. . 202.3.2. . 212.3.3. . 242.4. . 253. . 263.1. FLUENT . 263.2. FLUENT . 273.3. . 273.3.1. . 273.3.2. FLUENT . 283.3.3. . 293.3.4. . 293.4. . 324. . 334.1. . 334.1.1 . 334.1.2 . 334.1.3 . 354.2. . 354.2.1. ANSY . 354.2.2. . 354.2.3. . 374.3. . 405. . 415.1. . 415.2. . 425.2.1. . 425.2.2. . 435.2.3. . 445.3. . 455.4. . 475.5. . 486. . 496.1. . 496.2 . 49.50.5111. 1.1. kW233. 8 10 22 kW131. 7 1012-321.2 1.2.1 4 1-1 5 1.1 11. 3(10 a10)P4 1.2 wT vT cP 3vP lP gP vlgP c P+P+P6 1.2 1.2.2 72730 C 0250 C 250450 C 4501000 C 4 1.1 8 1-1 / C -21 CHClF2-11 CClF3-11322CCl F CClF- 60100- 40100- 40120- 10-10001000120013010130029030250-A-E1473501473001503951473002506504001000400110050012