Experimental development and investigation of a new liquid desiccant system for drying operations

Date

1991-05

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Abstract

Air conditioning and drying in humid climates operations have one point in common: the need to dehumidify air. Desiccant dehumidification offers certain advantages over conventional systems for both applications. For air conditioning operation, latent load on cooling system can be handled by heat energy input (low grade, or high grade), instead of expensive electricity consumption. For drying operation desiccant dehumidification allows low temperature drying to improve drying quality and to eliminate drying losses . . The basic concept of desiccant dehumidification is to absorb the moisture from the air by means of chemicals, called desiccants, that possess low partial water vapor pressure; and to evaporate the absorbed moisture from the desiccant in a regenerator. The effectiveness, reliability and feasibility of desiccant systems count on feasible regeneration of desiccant. The liquid desiccant systems offer lower parasitic power consumption, simpler construction compared to solid counterparts. Solid desiccant systems have been investigated extensively, but same is not true for liquid desiccant systems. In this study, the development of a new liquid desiccant, called CELD, experimental component analysis of a desiccant system for drying and air conditioning operations is performed. CELD ( CDst Effective Liquid Desiccant) is an equal ratio mixture of long known, dependable, but expensive LiCl, and readily avaliable, cheap, but not dependable CaCh. In this research, CELD has proven itself to be a cost effective solution to dependable liquid desiccant problem.

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Keywords

Drying agents, Cooling towers -- Design and construction, Refrigeration and refrigerating machinery -- Design and construction

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