Patent ID: 11859850
Assignee: HEAT-PIPE TECHNOLOGY, INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 2:
3. A method of recovering heat in a ventilation system having a supply duct and an exhaust duct, the ventilation system operating in a heating mode, the method comprising:
permitting an exhaust air stream in the exhaust duct to flow through a bottom section of the exhaust duct in which a bottom segment of an exhaust heat pipe portion is received;
restricting the exhaust air stream in the exhaust duct from flowing through a top section of the exhaust duct in which a top segment of an exhaust heat pipe portion is received; and
restricting a supply air stream in the supply duct from flowing through a bottom section of the supply duct in which a bottom segment of a supply heat pipe portion is received.