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THERMODYNAMIC ANALYSIS OF A GAS OPERATED TRIPLE EFFECT ABSORPTION CYCLE

Abstract

A Triple Effect Vapour Absorption cycle using LiBr-H2O solution as working pair has been analysed and compared with the Single and Double Effect cycles. The sources of energy selected are liquefied petroleum gas (LPG) and compressed natural gas (CNG) because the triple effect system requires heat at relatively high temperature. The analysis is done for different values of the evaporator and the condenser temperatures; the absorber temperature is assumed to be equal to the main condenser temperature. The temperature and concentration of LiBr salt in the high pressure generator, to which heat is supplied, are varied simultaneously for fixed temperatures/pressures in the middle and high pressure condensers. Effect of the high pressure generator temperature on the coefficient of performance (COP), volume flow rate and cost of the LPG and CNG have been investigated

Md Azhar and M. Altamush Siddiqui

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