A new auto - cascade absorption refrigeration cycle was proposed in this thesis to get low temperatures by utilizing low thermal potential energy based on an overall reviews of innovations in absorption cycles during the past decade 本文在研究国内外吸收式制冷循环最新发展动态的基础上，首次提出了一种新型的自行复叠吸收制冷循环，以达到降低吸收制冷机的蒸发温度，利用低品位热能来进行深度冷冻的目的，拓宽吸收制冷机的工程应用范围。
In chapter 2 , a new irreversible cycle model is presented for an absorption refrigerator , in which not only the irreversibilities of heat conduction and heat leakage but also the irreversibilities resulting from the friction , eddy and other irreversible effects inside the working fluid are taken into account 第二章建立了不可逆吸收式制冷循环新模型，模型不仅考虑了热传导和热漏不可逆性，而且也考虑了循环工质内部由于摩擦，涡流及其它不可逆效应所引起的内不可逆性。
The dissertation shows how a series of well - performing composite adsorbents that prepared by author suitable for the features of adsorption refrigeration are gained by using water and ethanol as cryogen ( adsorbate ) , which cause no harm to body and environment . the performance of the working pairs of water or ethanol with the composite adsorbents in the refrigeration through adsorption and desiccant cooling are thoroughly examined by experiments . the dissertation also examines , through energy analysis , the refrigeration efficiency and utilization ratio of the adsorption refrigeration , and analyzes the economic potential of the adsorption air - conditioning 以对人体无伤害、对环境无污染的水和乙醇作为吸附制冷工质，研制出适合于吸附制冷特点的性能优良的一系列复合吸附剂；对水或乙醇与自制复合吸附剂组成的制冷工质对的吸附式制冷和吸附除湿制冷的性能进行了深入的实验研究；用有效能分析方法讨论了吸附制冷循环的制冷效率和能量的利用率；对吸附式空调的经济性进行了分析。
When the temperature to gas pipelines , temperature packets of material expansion , the pressure rise , inflation pressures are rising corrugated box , corrugated promote the expansion thrust to overcome the spring - loaded pole resistance , the ball - type valve opened for big change ; when the gas pipeline to reduce the temperature , temperature of the material swelling up , the pressure lowered inflation corrugated box pressure also reduced , spring - loaded pole compressed corrugated of resistance to thrust , spherical valves open for smaller ; this constant push and pull adjustment for the balance , as long as refrigeration cycle continue 当回气管道温度升高，感温包内的物质膨胀，压力升高，膨胀波纹箱内压力也升高，波纹腔膨胀推动推力杆克服弹簧阻力，球型阀开度变大；当回气管道温度减低，感温包内的物质膨胀，压力降低，膨胀波纹箱内压力也降低，弹簧阻力推动推力杆压缩波纹腔，球型阀开度变小；如此不断的进行推拉调整平衡，只要制冷循环继续下去。
According to the thermodynamics theory of vapor compression refrigeration cycle , hfc - r134a is chosen as refrigerant fluid and the thermodynamics calculation of refrigeration system is accomplished , which is based on the table of r134a thermodynamics characteristics and estimate of portable refrigerator ' s calorific burthen 本文根据蒸汽压缩式制冷循环的热力学原理，从小冷量、小体积的便携式冷藏箱的热负荷计算出发，以所选用制冷剂( r134a )的热力性质表为依据，进行了制冷系统的基本热力计算。
Again , the cop of a ferroelectric ericsson refrigeration cycle is calculated in detail and the analytic expressions of the cop for some special dielectric materials which obey curie law , curie - weiss law and other laws are obtained . in chapter iii , the optimal performance of the regenerative ferromagnetic refrigeration cycles is studied 并对铁电埃里克森制冷循环的性能系数进行了详细的计算分析，导出满足居里定律、居里-外斯定律和其它特殊关系的电介质的埃里克森制冷循环的性能系数的解析表达式。
