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Energy, exergy, economic and environmental analysis of an indirect evaporative cooling integrated with liquid dehumidification

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  • Zhang, Hongkuan
  • Ma, Hongting
  • Ma, Shuo

Abstract

To reduce the energy consumption and CO2 emission of the air conditioning system, an integrated system of indirect evaporative cooling (IEC) and liquid dehumidification (LD) named IECL is investigated. The energy and exergy performance of the IEC and IECL are compared under different the primary air inlet temperature and moisture content, the economic and environmental analysis of the IECL is presented. The results show that IECL saves 97% of the energy consumption compared with traditional air conditioning for dealing with fresh air temperature and humidity. The IECL shows better energy conversion and utilization efficiency than the IEC. The maximum exergy efficiency ratio and exergy efficiency of the IECL are 3.75 and 56.99%, respectively. Moreover, the IECL shows great economic benefits than IEC. The STP of the IECL is 7.55% lower and the NPV of the IECL is 42.42% higher than that of the IEC. The CO2, SO2, and NOx emissions of the IECL are 53.12 kg/year, 1.60 kg/year, and 0.80 kg/year, respectively.

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  • Zhang, Hongkuan & Ma, Hongting & Ma, Shuo, 2022. "Energy, exergy, economic and environmental analysis of an indirect evaporative cooling integrated with liquid dehumidification," Energy, Elsevier, vol. 253(C).
    • Handle: RePEc:eee:energy:v:253:y:2022:i:c:s0360544222010507
    DOI: 10.1016/j.energy.2022.124147
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    1. Xu, Aixiang & Wang, Yizhang & Song, Tingting & Xiong, Yawen & Liu, Zhiqiang & Yang, Sheng, 2023. "Emergy evaluation of a solar-powered cascade system for dehumidification, cooling and heating in hot summer and cold winter areas of China," Energy, Elsevier, vol. 278(PB).
    2. Yan, Weichao & Cui, Xin & Meng, Xiangzhao & Yang, Chuanjun & Liu, Yilin & An, Hui & Jin, Liwen, 2023. "Effects of membrane characteristics on the evaporative cooling performance for hollow fiber membrane modules," Energy, Elsevier, vol. 270(C).

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