Experimental study of absorption heat pump recovering waste heat of humid and cold circulating water of thermal power plants

To study the actual performance of absorption heat pump used in the wet thermal power plant, analyses the operation data of four 220 MW coal-fired heating units in a thermal power plant using absorption heat pumps in the whole heating season, tests the parameters of extracted steam, circulating water and primary pipe, and analyses the actual operating COP of the absorption heat pump and the waste heat recovery rate of the circulating water. The test results show that the COP of heat pump reaches 1.43 and recovers 306 672.9 GJ of heat each year, equivalent to 10 477.4 tons of standard coal, and the effect of energy saving and emission reduction is remarkable.