Experiment Analysis of Two-phase Closed Thermosyphon Ice Storage Tank

• Main Authors: Jheng,Shih-Ying, 鄭詩穎
• Other Authors: Chiang,Yuan-Chin
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/dy6ewf

碩士 === 中國文化大學 === 機械工程學系數位機電碩士班 === 107 === The purpose of this study is to study and analyze the two-phase thermosyphon heat pipe ice storage tank. The two-phase thermosyphon heat pipe ice storage tank proposed by the research institute has three different operation modes: general mode, ice storage mode and ice melting mode. In this paper, the heat exchange characteristics of two-phase thermosyphon heat pipes in different modes are analyzed experimentally. In the research on the performance of ice storage mode, the working fluids used in the heat pipe of this study are R-134a and R-410a. The internal working fluid of the heat pipe absorbs the heat of the energy storage material to generate boiling, and the gaseous working fluid flows upward to the double set due to buoyancy. In the tube heat exchanger, after the low-temperature refrigerant generated by the vapor compression cycle exchanges heat with the working fluid in the double casing, the working fluid inside the heat pipe condenses, and the condensate acts by gravity along the heat pipe wall. During the process of flowing down to the bottom of the heat pipe, the heat of the energy storage material is absorbed into a film Evaporation, and the heat is returned to the heat storage end of the ice storage end to complete the cycle. In this paper, the ice storage tank running performance test is carried out by experimentally studying the working fluid filling amount of 42%, 50% and 58%. By changing the brine temperature provided by the constant temperature water tank, the cold storage performance of each working fluid filling amount is analyzed and discussed. Analysis of heat exchange characteristics of phase-heat siphon heat pipes.