AT-96-20-5 -- Analytical Study of a Gas-Fired Adsorptive Air-Conditioning System PDF

Adsorptive air conditioning represents a potential alternative to chlorofluorocarbon (CFC) systems. But to compete with other systems, adsorption systems must exhibit sufficient figures of merit and energetic densities. An analytical study to predict the overall heat transfer coefficient in an adsorber has been conducted and is presented. This study, based on a method-of-moment analysis, shows the influence of three parameters limiting the heat transfer in adsorbent beds. heat transfer in adsorbent beds has been intensified. Using new consolidated materials, the machine utilises two uniform temperature adsorbent beds in a cycle that incorporates both heat and mass recovery. It uses a zeolite-water pair. It is designed to produce 3kW of cooling. Expected cooling performances are 200W/kg of adsorbent with a coefficient of performance (COP) close to 0.8 and a cycle time of 20 minutes. The thermal conditions used to test the cycle are - the heater, 220degC, the cooler, 40degC, and the evaporation temperature, 3degC.

KEYWORDS: year 1996, gas fired, adsorption, air conditioning, cooling, heat transfer coefficient, calculating, heat flow, adsorbents, cyclic, heat recovery, zeolites, water, performance, thermal conductivity