Compact waste heat utilization system and waste heat utilization method thereof

The invention relates to the technical field of heat supply through waste heat, in particular to a compact waste heat utilization system and a waste heat utilization method thereof. Comprising a first-class absorption heat pump, a heat exchanger and a heat demand end, the first-class absorption heat pump comprises a generator, a condenser, an evaporator and an absorber, and the heat exchanger comprises a high-temperature channel and a low-temperature channel. The heat demand end is sequentially connected with the evaporator, the low-temperature channel, the absorber, the condenser and the heat user end through pipelines to form a circulation loop; an inlet of the generator is connected with a driving heat source. An inlet of the high-temperature channel is connected with a waste heat source. By adopting a new waste heat utilization mode, an intermediate water circulation system is omitted, related equipment of intermediate water is forbidden, the comprehensive cost of waste heat recovery is reduced, a more co