Heat transfer system

摘要

A heat transfer system includes a heat exchanger configured to transfer heat between a first fluid and a second fluid. The heat exchanger includes an outer sleeve and a microchannel unit. The outer sleeve has an interior surface defining a cavity and an exterior surface configured to be in direct thermal communication with the first fluid. The microchannel unit is received in the cavity. The microchannel unit has a plurality of microchannels configured to receive the second fluid therein and be in direct thermal communication with the second fluid. The microchannel unit has an exterior surface in direct thermal communication with the interior surface of the outer sleeve to transfer heat therebetween. At least one of the interior surface of the outer sleeve and the exterior surface of the microchannel unit has grooves defining breach channels for the first fluid or the second fluid should a breach in the outer sleeve or the microchannel unit occur.

主权项

1. A heat transfer system comprising:
a liquid line for carrying liquid; a refrigerant line for carrying a refrigerant; a refrigerant desuperheater heat exchanger in fluid communication with the refrigerant line and the liquid line, wherein the refrigerant enters the refrigerant desuperheater as a superheated gas and is cooled to a hot gas; a refrigerant condenser heat exchanger in fluid communication with the liquid line and the refrigerant line, wherein the refrigerant enters the refrigerant condenser as a hot gas and is cooled to a warmed liquid; and a refrigerant sub-cooler heat exchanger in fluid communication with the liquid line and the refrigerant line, wherein the refrigerant enters the refrigerant sub-cooler as a warmed liquid and is cooled to a cooled liquid; wherein the liquid enters the refrigerant sub-cooler heat exchanger and is warmed, the liquid enters the refrigerant condenser heat exchanger and is warmed, and the liquid enters the refrigerant desuperheater heat exchanger and is warmed; and wherein the refrigerant desuperheater heat exchanger, the refrigerant condenser heat exchanger, and the refrigerant sub-cooler heat exchanger are sleeved microchannel heat exchangers each having a microchannel unit received in an outer sleeve and in thermal communication therewith, the refrigerant passing through the microchannel unit and in thermal communication therewith and the liquid passing along an exterior of the sleeve and in thermal communication therewith, the microchannel unit having a solid body defining a plurality of microchannels therein, the body having walls entirely surrounding each microchannel such that the refrigerant in the microchannels is contained in the microchannels and isolated from the outer sleeve.