THREE-STAGE TEMPERATURE RISING TYPE ABSORPTION HEAT PUMP

摘要

PROBLEM TO BE SOLVED: To provide a three-stage temperature rising type absorption heat pump which suppresses low refrigerant vapor pressure of a medium-temperature absorber can body and a high-temperature absorber can body which require pressure resistance, by generating vapor or the like at a higher temperature than a heat source temperature while using low-quality heat such as hot water as a heat source.SOLUTION: Two or three regenerators heated by a heat source fluid are provided in series in a flow direction of the heat source fluid. Solution circulation passages each including one regenerator are provided as many as the number of regenerators. At least one solution pump is provided in each circulation passage and a high-temperature absorber, a medium-temperature absorber and a low-temperature absorber are included in any circulation passage.