• Vol 7, No 2 (2016)
  • Mechanical Engineering

Effect of Regenaration Air Temperature on Desiccant Wheel Performance

Haslinda Mohamed Kamar, Nazri Kamsah, Muhammad Idrus Alhamid, Kasni Sumeru

Cite this article as:

Kamar, H.M., Kamsah, N., Alhamid, M.I., Sumeru, K., 2016. Effect of Regenaration Air Temperature on Desiccant Wheel Performance. International Journal of Technology. Volume 7(2), pp.281-287

Haslinda Mohamed Kamar Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor 81310, Malaysia
Nazri Kamsah Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, Johor Bahru, Johor 81310, Malaysia
Muhammad Idrus Alhamid Department of Mechanical Engineering, Faculty of Engineering, Universitas Indonesia, Kampus UI Depok, Depok 16424, Indonesia
Kasni Sumeru Department of Refrigeration & Air Conditioning, Bandung State Polytechnic, Gegerkalong Hilir Ciwaruga, Bandung 40012, Indonesia
Email to Corresponding Author


Desiccant wheels are used as an air dehumidifier in air-conditioning and industrial applications. Desiccant wheel performance determines the size and cost of the whole system. A good desiccant wheel is one that saves energy usage. This article presents an experimental investigation on the effects of varying the regeneration air temperature, viz., 50, 60 and 70oC, on desiccant wheel performance. Three performance criteria were considered, namely condition of process outlet air, dehumidifier efficiencies and dehumidification rate. Two kinds of efficiency of the desiccant wheel dehumidifier were examined, namely thermal and dehumidification efficiency. Results of the experiments show that increasing the regeneration air temperature increases the dry bulb temperature of the process outlet air. However the moisture content of the process outlet air is reduced. The dehumidification efficiency of the desiccant wheel decreases with increasing regeneration air temperature, i.e., 46.7, 45.8 and 45.3 % for 50, 60 and 70oC, respectively. In contrast, the dehumidification rate increases with an increase in the regeneration air temperature, namely 32.6, 37.1 and 40.2 g/h for 50, 60 and 70oC, respectively.

Desiccant wheel, Air dehumidifier, Process air, Regeneration air


Bareschino, P., Diglio, G., Pepe, F., Angrisani, G., Roselli, C., 2015. Modelling of a Rotary Desiccant Wheel: Numerical Validation of a Variable Properties Model. Applied Thermal Engineering, Volume 78, pp. 640-648

Waugaman, D.G., Kini, A., Kettleborough, C., 1993. A Review of Desiccant Cooling System. Journal Energy Resources Technology, ASME, Volume 115, pp. 1-8

Kodama, A., Hirayama, T., Goto, M., Hirose, T., 2001. The Use of Psychometric Charts for the Optimisation of Thermal Swing Desiccant Wheel. Applied Thermal Engineering, Volume 21, pp. 1657-1674

Angrisani, G., Roselli, C., Sasso, M., 2013. Effect of Rotational Speed on the Performance of a Desiccant Wheel. Applied Energy, Volume 104, pp. 268-275

Ali, M., Vukovic, V., Sahir, M.H., Basciotti, D., 2013. Development and Validation of Desiccant Wheel Model Calibrated under Transient Operating Conditions. Applied Thermal Engineering, Volume 61, pp. 469-480

Yamaguci, S., Saito, K., 2013. Numerical and Experimental Performance Analysis of Rotary Desiccant Wheel. International Journal of Heat Mass Transfer, Volume 60, pp. 51-60

Table of Contents