Title :
Development of a test apparatus for micro-finned tube used in air-conditioners
Author :
Shaozhi, Zhang ; Mingyao, Shi ; Qi, Chen ; Guangming, Chen
Author_Institution :
Refrigeration & Cryogenic Eng. Inst., Hangzhou, China
Abstract :
Micro-finned tubes are widely used in air-conditioners to improve the performance. A test apparatus for their heat transfer characteristics is helpful for the development of new finned tube. In this paper such an apparatus was set up to carry out evaporation and condensation test. The refrigerant used was R410A. Automatic control which was designed to guarantee stable operation could be realized for a wide range of test conditions. Namely, the diameter of the tested tube varied from 5mm to 7mm, and the mass flow velocity varied from 100 to 400kg/m2s. Friendly human-machine interface was also established so that heat transfer coefficient could be obtained when stable criteria were met. Sample curves were given for evaporation and condensation tests respectively.
Keywords :
air conditioning; condensation; evaporation; heat transfer; mechanical engineering computing; mechanical testing; micromechanical devices; pipes; refrigerants; test equipment; user interfaces; velocity; R410A refrigerant; air conditioner; condensation test; evaporation test; heat transfer characteristics; human-machine interface; mass flow velocity; microfinned tube; size 5 mm to 7 mm; test apparatus; Electron tubes; Heat transfer; Pressure control; Refrigerants; Storage tanks; Valves; Water heating; automatic control; heat transfer; micro-finned tube; test apparatus;
Conference_Titel :
Computer Science and Automation Engineering (CSAE), 2012 IEEE International Conference on
Conference_Location :
Zhangjiajie
Print_ISBN :
978-1-4673-0088-9
DOI :
10.1109/CSAE.2012.6272661
