期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 35, 期 4, 页码 1156-1165出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2012.02.004
关键词
Supercooling; Thermoelectric element; Voltage pulse; Convection heat transfer coefficient; Cooling load
资金
- Hubei Nature-Science Funds [2011CD13288]
- Open Subject of Key Laboratory of Cryogenics
- TIPC
- CAS [CRYO201121]
- Huazhong University of Science and Technology Doctoral Dissertation Innovation Fund
- Mainland University in The Hong Kong Polytechnic University [A-SA75]
This paper presents a mathematical model and its solution algorithm for analyzing the transient supercooling effect of voltage pulse on a thermoelectric (TE) element. Realistic boundary conditions, including the hot-end convection heat transfer coefficient (h) and cold-end cooling load, are considered in solving the model. The numerical simulation results show that the transient supercooling occurs when the steady input voltage experiences a step change. However, the minimum supercooling temperature (T-mts) cannot approach absolute zero as reported in previous research due to the co-existence of Joule heat and Peltier effect. There is a cost-effective h to achieve T-mts and maximum hold time of the supercooling temperature. However, the cold-end cooling load only affects T-mts. Experiments are conducted to test the transient supercooling effect of voltage pulse. The trends of the cold-end temperature responding to voltage pulses obtained in numerical simulation and experiment tests match well. (C) 2012 Elsevier Ltd and IIR. All rights reserved.
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