Patent ID: 8769971
Filing Date: 2014-07-08
Classification: F24F,F28D,Y02B

Abstract:
1. An indirect evaporative cooler for cooling a stream of inlet supply air from a first temperature to a second, lower temperature using a stream of liquid coolant and a stream of exhaust or purge air, comprising: a first flow channel for receiving the stream of inlet supply air; a second flow channel adjacent to the first flow channel and for receiving the stream of exhaust air at a temperature lower than the first temperature, wherein the second flow channel is defined in part by a sheet of a membrane at least partially permeable to water vapor, wherein the stream of liquid coolant flows on a side of the membrane opposite the second flow channel, and wherein the liquid coolant transfers mass as vapor through the membrane to the stream of exhaust air in response to receiving heat transferred from the stream of inlet supply air in the first flow channel; and a separation wall spaced apart from the sheet of membrane defining a liquid coolant flow channel for the stream of liquid coolant, the separation wall comprising a material impermeable to the liquid coolant and conductive of the heat from the stream of inlet supply air.