摘要 :
Although surface coolers based on conventional temperature and humidity ranges have been developed and
designed successfully for air conditioning and dehumidification, they frequently fail to achieve the desired
results for some...
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Although surface coolers based on conventional temperature and humidity ranges have been developed and
designed successfully for air conditioning and dehumidification, they frequently fail to achieve the desired
results for some extreme high temperature and high humidity conditions. In this paper operation
characteristics and performance of finned tube surface cooler are investigated when it deals with the air
under extreme conditions (temperature > 35℃, humidity > 30 g/kg dry air). The mathematical model of the
surface cooler is established, the influence of different operating parameters on performance of the surface
cooler is explored, and exhaustive analysis is carried out to optimise the structural design of the cooler under
extreme operating conditions. The results suggests that for extreme conditions, the design with n=0.8~1.2 is
appropriate. This tube row design can improve dehumidification capacity, heat transfer effectiveness and
dehumidification effectiveness by 14.1%, 7.0% and 7.8% respectively compared to conventional structure.
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