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11 results on '"Chen, Chengdai"'

9. Performance testing and optimization of a thermoelectric elevator car air conditioner

Author

Tu Teng, Lingbo Mao, Lin Tao, Wang Changhong, Chen Chengdai, and Longqian Zhu

Subjects
Fluid Flow and Transfer Processes, Thermoelectric cooling, Materials science, Elevator, business.industry, 020209 energy, Cold side, 02 engineering and technology, 01 natural sciences, Automotive engineering, 010406 physical chemistry, 0104 chemical sciences, Volumetric flow rate, Air conditioning, lcsh:TA1-2040, Thermoelectric effect, 0202 electrical engineering, electronic engineering, information engineering, business, lcsh:Engineering (General). Civil engineering (General), Engineering (miscellaneous)
Abstract

At present, due to some elevator cars (EC) has no air conditioning system, resulting in a hot internal environment in the EC in summer. Thermoelectric cooling technology is a lightweight, low cost and fast cooling technology, which has a potential of solving this problem. Thus, a thermoelectric elevator car air conditioner (TE-ECAC) is designed for these EC in this paper. Based on the actual application, the TE-ECAC's cooling characteristic and performance are experimentally investigated in an Enthalpy Lab, and its performance is optimized after the analysis. According to the results, it's found that a stable working state of the TE-ECAC can be achieved at about 200s. Moreover, an optimal cooling coefficient of 1.24 and a maximum air-cooling capacity of 324W are achieved under an operation condition at the cold side flow rate of 1.75 m3/min and the ambient temperature of 28 °C. In addition, since TE-ECAC has greater advantages in economy and weight than conventional elevator air conditioner, it's particularly suitable for EC. Especially suitable for some old EC with a broken air conditioner and must to be replaced with a new air conditioner. All in all, it's a good application prospects for TE-ECAC applying to EC. Keywords: Thermoelectric cooling, Cooling coefficient, Air-cooling capacity, Elevator car, Optimization

Published
2020

10. Performance testing and optimization of a thermoelectric elevator car air conditioner

Author

Chen, Chengdai, Mao, Lingbo, Lin, Tao, Tu, Teng, Zhu, Longqian, Wang, Changhong, Chen, Chengdai, Mao, Lingbo, Lin, Tao, Tu, Teng, Zhu, Longqian, and Wang, Changhong

Abstract

At present, due to some elevator cars (EC) has no air conditioning system, resulting in a hot internal environment in the EC in summer. Thermoelectric cooling technology is a lightweight, low cost and fast cooling technology, which has a potential of solving this problem. Thus, a thermoelectric elevator car air conditioner (TE-ECAC) is designed for these EC in this paper. Based on the actual application, the TE-ECAC's cooling characteristic and performance are experimentally investigated in an Enthalpy Lab, and its performance is optimized after the analysis. According to the results, it's found that a stable working state of the TE-ECAC can be achieved at about 200s. Moreover, an optimal cooling coefficient of 1.24 and a maximum aircooling capacity of 324W are achieved under an operation condition at the cold side flow rate of 1.75 m(3)/min and the ambient temperature of 28 degrees C. In addition, since TE-ECAC has greater advantages in economy and weight than conventional elevator air conditioner, it's particularly suitable for EC. Especially suitable for some old EC with a broken air conditioner and must to be replaced with a new air conditioner. All in all, it's a good application prospects for TE-ECAC applying to EC.

Published
2020

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