In a steam-compression refrigeration cycle, optimum heat exchange efficiency is acquired and compressor liquid hammer can be avoided if “zero superheat” arises at dry-evaporator outlet. Therefore zero superheat control study is of value. since refrigeration cycle will not get stable while it tends to hunt nearby zero superheat, expansion valve-dry evaporator regulation loop have to run at a positive superheat; and no fit theory is able to guide the design on the stability of expansion valve-dry evaporator regulation loop until the cause of refrigeration cycle hunting is found. Flow display experiments reveal the mechanism that refrigeration cycle will hunt next to 0 superheat while vapor/liquid two phase flow alternates at expansion valve exit. on the ground that phases can be told apart by thermal sensing rather than superheat, a specialized sensor has been developed to detect 0 superheat signal which serves as the feedback signal of expansion valve-dry evaporator regulation loop, the experiment results prove that the thermal sensor can afford 0 superheat.
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ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer
December 18–21, 2009
Shanghai, China
Conference Sponsors:
- Nanotechnology Institute
ISBN:
978-0-7918-4391-8
PROCEEDINGS PAPER
Experimental Researches on Zero Superheat in Refrigeration Cycle Available to Purchase
Yonghong Wang,
Yonghong Wang
University of Shanghai for Science and Technology, Shanghai, China
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Leren Tao,
Leren Tao
University of Shanghai for Science and Technology, Shanghai, China
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Jinfeng Wang,
Jinfeng Wang
University of Shanghai for Science and Technology; Shanghai Ocean University, Shanghai, China
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Hong Tao,
Hong Tao
University of Shanghai for Science and Technology, Shanghai, China
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Lihao Huang,
Lihao Huang
University of Shanghai for Science and Technology, Shanghai, China
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Zhigao Zheng,
Zhigao Zheng
University of Shanghai for Science and Technology, Shanghai, China
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Zhiqiang Yang,
Zhiqiang Yang
University of Shanghai for Science and Technology, Shanghai, China
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Lei Han
Lei Han
University of Shanghai for Science and Technology, Shanghai, China
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Yonghong Wang
University of Shanghai for Science and Technology, Shanghai, China
Leren Tao
University of Shanghai for Science and Technology, Shanghai, China
Jinfeng Wang
University of Shanghai for Science and Technology; Shanghai Ocean University, Shanghai, China
Hong Tao
University of Shanghai for Science and Technology, Shanghai, China
Lihao Huang
University of Shanghai for Science and Technology, Shanghai, China
Zhigao Zheng
University of Shanghai for Science and Technology, Shanghai, China
Zhiqiang Yang
University of Shanghai for Science and Technology, Shanghai, China
Lei Han
University of Shanghai for Science and Technology, Shanghai, China
Paper No:
MNHMT2009-18300, pp. 207-214; 8 pages
Published Online:
October 26, 2010
Citation
Wang, Y, Tao, L, Wang, J, Tao, H, Huang, L, Zheng, Z, Yang, Z, & Han, L. "Experimental Researches on Zero Superheat in Refrigeration Cycle." Proceedings of the ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer, Volume 3. Shanghai, China. December 18–21, 2009. pp. 207-214. ASME. https://doi.org/10.1115/MNHMT2009-18300
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