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Analysis on hydrophobic membrane-based air pre-dehumidification and capillary radiation air conditioning system.

Number: pap. 2264

Author(s) : WANG Z., HU J., LI R., et al.

Summary

Temperature and humidity are two important factors for human thermal comfort and air conditioning system. Traditional air conditioning system adjust temperature and humidity simultaneously in evaporator, and the evaporation temperature is generally lower than the dew point temperature of air, accordingly, the thermal comfort is not easy satisfied and the whole energy efficiency is relative low. Temperature and humidity independent control of air conditioning system is an effective mode that can supply the needed indoor parameters with high energy efficiency. Capillary network radiation system is a comfortable and energy-saving terminal energy supplements mode with no blowing feeling; however, it only adjust temperature and the condensation water often occurs in the capillary tube surface. Therefore, air pre-dehumidification process can help to raise the air dew point temperature to ensure the higher temperature working fluid in capillary tube. In this study, a hydrophobic membrane-based air pre-dehumidification and capillary radiation air conditioning system is built. The hollow fiber membrane is acted as the dehumidifier when the concentrated lithium bromide solution with low temperature flows into the membrane while the wet air pass through the outside of membrane. The water vapor will pass across the membrane pores from wet air to lithium bromide solution and absorbed, and then the diluted lithium bromide solution is regenerated by other heat energy independently, furthermore, the air temperature is controlled by capillary network radiation system. Finally, the influence factors of indoor parameters and the whole energy efficiency are analyzed.

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Pages: 6

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Details

  • Original title: Analysis on hydrophobic membrane-based air pre-dehumidification and capillary radiation air conditioning system.
  • Record ID : 30024470
  • Languages: English
  • Subject: General information
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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