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Luo R.,Polytechnic University of Mozambique | Huang X.,Polytechnic University of Mozambique | Shen B.,Nantong Kunlun Air Conditioning Co. | Liu X.,Nantong Kunlun Air Conditioning Co. | And 2 more authors.
Huagong Xuebao/CIESC Journal | Year: 2012

In order to study the operation of rotary two-stage evaporative cooling air conditioning unit in areas of high humidity, a 3000 m3·h-1 air volume rotary heat recovery-type indirect-direct evaporative cooling air conditioning unit was tested. When opened primary air side rotary indirect evaporative cooling section and filler segment, the pump of secondary air side filler segment was shut down, the supply air temperature of the unit was 23°C, which was lower than the outdoor air dew-point temperature of 24.5°C, the total average temperature drop of the unit was 7.1°C, the average temperature drop of the rotary indirect segment was 6.9°C, the average cooling efficiency of 76.9%, filler segment almost did not play a role in cooling, the dominant cooling rotary indirect segment. The contrast in a dry, moderate humidity areas, the average outdoor dry bulb temperature of 32.1°C, which played a major role in cooling air side filler segment, lower the average temperature up to 5.5°C. This showed whether the indirect, direct, or indirect-direct evaporative cooling could applied where refrigeration refrigeration cooling was expensive. © All Rights Reserved. Source

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