The performance of a liquid-desiccant air conditioner was modelled with adiabatic and internally cooled absorbers. The absorbers were configured both as counterflow and cross-flow units. For liquid-desiccant air conditioners that use internally cooled absorbers, thermal coefficient of performance (COP) is a strong function of the desiccant and cooling water flow rates. At flow rates that are approximately an order of magnitude less than current practice, the thermal COP of the liquid-desiccant air conditioner increases by 25%. This improvement results from operating the absorber so that evaporative cooling is increased. At conventional flooding rates, both the adiabatic and internally cooled cross-flow absorbers produce system COPs that are comparable to counterflow units.
KEYWORDS: absorbents, designing, coefficient of performance, desiccants, unit air conditioners, performance, calculating, counterflow heat exchangers, cross flow heat exchangers, heat exchangers, cooling, water flow, evaporative cooling, adiabatic, cooling
Citation: ASHRAE Trans. 1992, vol.98, Part 1, Paper number AN-92-3-3, 712-720, 10 figs., 4 refs.
Product Details
- Published:
- 1992
- File Size:
- 1 file , 1.1 MB
- Product Code(s):
- D-17924
