In contrast to an adiabatic dehumidification process, there
is simultaneous cooling/heating in an internally-cooled/heated
dehumidifier/regenerator using liquid desiccant. The operating
performance of an internally-cooled/heated system was examined
through both experimental tests and simulation analysis in present
study, and the main conclusions are as follows:
1) A stainless steel internally-cooled dehumidifier was designed,
and the experimental results for different working conditions
were analyzed using a LiBr aqueous solution as the liquid
desiccant. Effects of the inlet parameters on the moisture
removal rate, dehumidifying efficiency, and volume mass
transfer coefficient were obtained.
2) The predicted results by the established theoretical model
agreed well with the experimental results. Based on the validated
model, the performance of internally-cooled/heated air
processor using liquid desiccant was investigated. Low regeneration
temperature could be realized.
3) Exhaust heat from the condenser of heat pump was utilized to
regenerate desiccant. The COP of the heat pump driven air
handling system was in the range of 4.2e6.5. The system COP
increased obviously with the decrease of the humidity ratio of
the processed air.
In contrast to an adiabatic dehumidification process, thereis simultaneous cooling/heating in an internally-cooled/heateddehumidifier/regenerator using liquid desiccant. The operatingperformance of an internally-cooled/heated system was examinedthrough both experimental tests and simulation analysis in presentstudy, and the main conclusions are as follows:1) A stainless steel internally-cooled dehumidifier was designed,and the experimental results for different working conditionswere analyzed using a LiBr aqueous solution as the liquiddesiccant. Effects of the inlet parameters on the moistureremoval rate, dehumidifying efficiency, and volume masstransfer coefficient were obtained.2) The predicted results by the established theoretical modelagreed well with the experimental results. Based on the validatedmodel, the performance of internally-cooled/heated airprocessor using liquid desiccant was investigated. Low regenerationtemperature could be realized.3) Exhaust heat from the condenser of heat pump was utilized toregenerate desiccant. The COP of the heat pump driven airhandling system was in the range of 4.2e6.5. The system COPincreased obviously with the decrease of the humidity ratio ofthe processed air.
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