Transport Refrigeration System Utilizing Engine Waste Heat

摘要

A transport refrigeration system includes a transport refrigeration unit having a refrigerant circuit through which a refrigerant is circulated in heat exchange relationship with air drawn from a cargo box, a fuel-fired engine for powering the refrigeration unit and having an exhaust system through which exhaust gases generated by the engine are discharged and an engine coolant circuit, an engine exhaust gases to engine coolant heat exchanger, and an engine coolant circuit to refrigeration unit heat exchanger.

主权项

1. A transport refrigeration system for controlling a temperature associated with a mobile refrigerated cargo box comprising:
a refrigeration unit having a refrigerant circuit through which a refrigerant is circulated in heat exchange relationship with air drawn from the cargo box; a fuel-fired engine for powering the refrigeration unit, the engine having an exhaust system through which exhaust gases generated by the engine are discharged; an engine coolant circuit; an engine exhaust gases to engine coolant heat exchanger; and an engine coolant circuit to refrigeration unit heat exchanger; wherein the engine exhaust gases to engine coolant heat exchanger comprises a first heat exchanger having an engine coolant pass interdisposed in the engine coolant circuit and a gas-side pass, the engine coolant pass disposed in the gas-side pass for passing engine coolant in heat exchange relationship with a flow of engine exhaust gases passing through the gas-side pass, whereby the engine coolant absorbs heat from the engine exhaust gases and the engine exhaust gases are cooled; wherein the engine exhaust gases to engine coolant heat exchanger comprises a first heat exchanger having an engine coolant pass interdisposed in the engine coolant circuit and a gas-side pass, the engine coolant pass disposed in the as-side pass for passing engine coolant in heat exchange relationship with a flow of engine exhaust gases passing through the gas-side pass, whereby the engine coolant absorbs heat from the engine exhaust gases and the engine exhaust gases are cooled.