Title: Experimental studies on the performance of dehumidifier using calcium chloride as a liquid desiccant

Authors: D. Seenivasan; V. Selladurai; T.V. Arjunan

Addresses: Coimbatore Institute of Engineering and Technology, Coimbatore-641 109, India ' Coimbatore Institute of Technology, Coimbatore- 641014, India ' Coimbatore Institute of Engineering and Technology, Coimbatore-641 109, India

Abstract: The performance of liquid desiccant air conditioning system (LDAS) mainly depends on dehumidifier of the system. In this study, the effects of inlet parameters on the performance of liquid desiccant dehumidifiers were studied with and without indirect evaporative cooler or intercooler (IDEC) between the dehumidifier for single stage and double stage. The results show that: i) the dehumidification effectiveness decreases by 8.6% for the all types considered here, with increase in air flow rate from 0.05 kg/s to 0.11 kg/s; ii) the dehumidifier effectiveness decreases due to decrease of moisture removal rate with increasing desiccant temperature in all stages; iii) the moisture condensation rate and dehumidifier effectiveness increases by 30% and 22.67% respectively with increase in desiccant flow rate; iv) the moisture condensation rate is increased by 13% in increasing desiccant concentration. It is concluded that double stage desiccant dehumidifier with indirect evaporative cooler performs better.

Keywords: liquid desiccant; dehumidifier; moisture condensation rate; MCR; dehumidifier effectiveness; indirect evaporative cooler; IEDC.

DOI: 10.1504/IJETP.2018.088287

International Journal of Energy Technology and Policy, 2018 Vol.14 No.1, pp.49 - 63

Received: 01 Oct 2015
Accepted: 18 Dec 2016
Published online: 01 Dec 2017 *

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