Abstract: The heat exchanger is made economically by using thermoplastic sheets with hollow tubes and spacers between the sheets and fusing the edges of the sheets together to form an integral housing. Preferably, the heat exchanger is an opposed-flow heat-exchanger giving improved heat-transfer efficiency.
Type:
Grant
Filed:
December 29, 2005
Date of Patent:
March 3, 2009
Assignee:
Klas C. Haglid, Building Performance Equipment