Heat and Mass Transfer

, Volume 53, Issue 7, pp 2287–2296 | Cite as

Transient performance and temperature field of a natural convection air dehumidifier loop

  • Mohammad Ali FazilatiEmail author
  • Ahmad Sedaghat
  • Ali-Akbar Alemrajabi


In this paper, transient performance of the previously introduced natural convection heat and mass transfer loop is investigated for an air dehumidifier system. The performance of the loop is studied in different conditions of heat source/heat sink temperature and different startup desiccant concentrations. Unlike conventional loops, it is observed that natural convection of the fluid originates from the heat sink towards the heat source. The proper operation of the cycle is highly dependent on the heat sink/heat source temperatures. To reduce the time constant of the system, a proper desiccant concentration should be adopted for charge of the loop.


Particle Image Velocimetry Heat Sink Vapor Pressure Difference Liquid Desiccant Desiccant Solution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

List of symbols


Concentration (kgsalt/kgsolution)


Lower horizontal level


Pressure (kPa)


Temperature (°C)


Upper horizontal level


Volume flow rate (l/h)



Air conditioning


American society of testing machines


Calcium chloride


Hollow fiber membrane


Indoor air quality


Liquid to air membrane energy exchanger


Liquid desiccant air conditioning system


Lithium bromide


Lithium chloride


Magnesium chloride


Natural convection liquid desiccant


Poly ethylene


PARTICLE image velocimetry


Poly propylene


Poly vinylidene fluoride


Resistance temperature detector


Tri-ethylene glycol



Dry bulb


Wet bulb


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringIsfahan University of TechnologyIsfahanIran

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