公开(公告)号：US20180003404A1

公开(公告)日：2018-01-04

申请号：US15708530

申请日：2017-09-19

Applicant: Lennox Industries Inc.

Inventor： Justin MCKIE ,  Eric Perez ,  Herman Marcus Thomas ,  Steve Schneider

IPC: F24F11/00 ,  F24F12/00

CPC classification number: F24F11/30 ,  F24F11/41 ,  F24F12/006 ,  F24F2140/30

Abstract: A method of defrosting an energy recovery ventilator unit. The method comprises defrosting an energy recovery ventilator unit. The method comprises activating a defrost process of an enthalpy-exchange zone of the energy recovery ventilator unit when an air-flow blockage in the enthalpy-exchange zone coincides with a frost threshold in the ambient environment surrounding the energy recovery ventilator unit. The method also comprises terminating the defrost process when a heat transfer efficiency across the enthalpy-exchange zone returns to within 10 percent of a pre-frosting heat transfer efficiency wherein, the heat transfer efficiency is proportional to a temperature difference between an intake air zone of the energy recovery ventilator and a supply air zone of the energy recovery ventilator divided by a temperature difference between an return air zone of the energy recovery ventilator and the intake air zone.