LiBr-H_2O absorption refrigerator can be driven by waste heat of flue gas, chemical reaction etc to produce chiller water, so it has high efficiency of energy utilizing. The influences of inlet and outlet temperature of flue gas on LiBr-H2O absorption refrigerator drove by waste heat are investigated. The analysis and comparative of difference system and performance of LiBr-H2O absorption refrigerator drove by flue gas are given in this paper. COP of LiBr-H2O absorption refrigerator is estimation of the performance of absorption refrigerator only, but it can't estimate the performance of refrigerator drove by waste heat of flue gas. The waste heat utilizing efficiency and the waste heat refrigeration efficiency are given in the paper to estimate the performance of LiBr-H_2O absorption refrigerator drove by waste heat of flue gas.
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