Effect of Material Properties on the Performance of Liquid Desiccant AirConditioners and Dehumidifiers. Final Report, October 1990-October 1991

摘要

The principal findings of the study were that (1) it is unlikely that a new fluidcan be developed that will significantly improve the COP of a LDAC, (2) new fluids that can dry air to lower humidities have the potential to increase the specific cooling (i.e., Btu per cfm of process air) of the LDAC and, thereby, improve its performance at high outdoor wetbulb temperatures and/or lower its capital cost, and (3) new designs for the conditioner and the regenerator have the potential to greatly improve the COP of the LDAC. New designs for an internally-cooled conditioner that exploit low desiccant and cooling water flow rates can improve the COP of the LDAC by 25%; new designs for the regenerator, which include multiple-effect boilers and engine-driven vapor-compression distillers can increase the LDAC COP to between 1.3 and 2.1 at ARI conditions.