Exergoeconomic Analysis Of Solar-driven LiBr/H₂O Absorption Refrigeration Systems

A solar air condition system consisting of "parabolic trough collectors+lithium bromide/water absorption chiller" is designed, according to the specific cooling load of a particular corporate offices in Huanggang, of which the heat storage tank and the terminal resistance parameters are calculated. Three parabolic trough solar collectors for hot water-driven double effect lithium bromide/water refrigeration systems (in series, in parallel to the first category, in parallel to the second category) are put forward, through the establishment of three steady-state models of the systems exergy and exergoeconomic analyses are conducted.Fuel-Product-Loss are defined according to the principles of Exergoeconomics for each component of these three types of systems-the series, the first type parallel and the second class solar air conditioning systems in this article. Exergoeconomic cost balance equations of these three types of systems are established to provide a theoretical basis for exergoeconomic analysis.Steady-state theory models of three trough solar collectors for hot water-driven double-effect lithium bromide/water absorption refrigeration systems (in series, in parallel to the first and second category) Using MATLAB software are developed to provide a basis of calculation for exergoeconomic analysis.Effects of high pressure generator temperatures on crystalline properties of three solar air-conditioning systems (in series, in parallel to the first and second category) at different absorber temperatures, condenser temperatures and evaporator temperatures are studied.Effects of DNI, high pressure generator temperature, absorber temperature, condenser temperature, evaporator temperature, low temperature heat exchanger effectiveness and high temperature heat exchanger effectiveness on total initial investment, product cost flow rates and unit product cost of the overall system for three solar air-conditioning systems (in series, in parallel to the first and second category) are researched based on the MATLAB models developed and the principles of Exergoeconomics, then exergy and exergoeconomic analyses are conducted for three solar air-conditioning systems, followed by the share of each component in total initial investment at different high pressure generator temperatures for three systems are given, the results are expected to be useful in the selection, design and operation optimization of such systems.