Research On Single Stage Absorption Refrigeration Circulation With TFE-TEGDME

In the last ten years, the HVAC-R industry was always innovating both in theory and technique, which was compatible with our environmental protection and energy conservation policy. Absorption refrigeration technology has had a place in HVAC-R industry with the characteristics of low-energy-waste, high efficiency and environmental friendly. In the meantime the working fluid pair is changing and improving. Based on the shortcomings of NH3-H2O、LiBr-H2O etc., more and more scholars in the world began to be interested in alcohols refrigerant over the last handful of years. Researches Show that TFE-TEGDME has good performance as working fluid, and getting more and more attention in HVAC-R industry.In chapter II, It measures the mass fraction and density of the solution using gas chromatography and density gauge, and analyzed their relation. Then it combines the calculation formulas about the thermodynamic properties parameter of the working fluid with the limited data in papers all around the world, and corrects the formulas using actual value. For the convenience of using the data in the future, It programs with C++and Excel.The following two chapters are about introducing measuring and data acquisition equipments, building processes of testing table and measuring processes etc. In chapter V, It focuses on analyzing experimental data, Under the conditions of heating temperature70℃, heating power1.1kW, cooling water temperature9℃, the evaporating temperature reached-3℃, thermal coefficient was about0.4. When cooling water temperature rises, the absorber outlet solution’s temperature and condensing temperature rise, the difference of solution concentration decreases. When the heating temperature rises, the outlet solution’s temperature rises, the concentration of strong solution rises, the evaporating pressure decreases; when cycling flow rises, the refrigerating capacity rises, and it reaches top at9kg/min of cycling flow, then the refrigerating capacity decreases with cycling flow, so it has optimum value.