THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

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Simulation analysis and optimization research on cooling and dehumidifying effects for evaporator

ABSTRACT
The improvement performance of refrigerating dehumidification system was theoretically discusses based on a dehumidification model. The influence of evaporator inlet wind speed, dry bulb temperature and relative humidity on dehumidification were analysed by the model. The results show that, when inlet air temperature and humidity were kept constant, the dehumidification capacity increased first and then decreased with increase of the wind speed; When the moisture content and the wind speed of the inlet air were kept constant, the dehumidification capacity gradually decreased with increase of the inlet air dry bulb temperature; The inlet air dry bulb temperature was between 21-36 °C and the relative humidity was between 40% and 85%, the difference between the inlet air wet bulb temperature and the evaporation temperature at the optimum COP was about 10 °C; There was a nearly linear relationship between the corresponding evaporation temperature at the optimal COP and the evaporation temperature with the maximum dehumidification capacity, compared with the test value, the error was less than 10%.
KEYWORDS
PAPER SUBMITTED: 2019-11-25
PAPER REVISED: 2020-02-27
PAPER ACCEPTED: 2020-04-10
PUBLISHED ONLINE: 2020-05-02
DOI REFERENCE: https://doi.org/10.2298/TSCI191125167L
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