Rankine Cycle

摘要

The Rankine cycle (31) includes a refrigerant pump (32), a heat exchanger (36), an expander (37), and a condenser (38). The Rankine cycle (31) shares the condenser (38) and refrigerant with a refrigerant cycle of an air-conditioner. A refrigerant passage connecting to an outlet of the condenser (38) branches at a refrigeration cycle branch point (45) to connect to the refrigerant pump (32) and an evaporator (55). In the case of operating the Rankine cycle, without a request to operate the air-conditioner, the compressor (52) in the refrigeration cycle is driven.

主权项

1. A Rankine cycle provided including: a refrigerant pump that circulates a refrigerant; a heat exchanger that causes the refrigerant to recover waste heat of an engine; an expander that converts the waste heat recovered in the refrigerant by expanding the refrigerant; and a condenser that condenses the refrigerant expanded by the expander, the Rankine cycle sharing the condenser and the refrigerant with a refrigeration cycle of an air-conditioner,
wherein a refrigerant passage connecting to an outlet of the condenser branches at a branch point to connect the refrigerant pump and an evaporator in the refrigeration cycle, wherein an air-conditioner circuit valve is provided between the branch point and the evaporator, and wherein the Rankine cycle comprises a controller that, in the case of operating the Rankine cycle, drives a compressor in the refrigeration cycle, and while driving at least the compressor, closes the air-conditioner circuit valve or decreases an opening degree of the air-conditioner circuit valve, without a request to operate the air-conditioner.