The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 1997
Filed:
May. 20, 1996
Thomas B Hartman, Marysville, WA (US);
Other;
Abstract
A variable air volume heating and cooling system that provides automatic system-wide airflow balancing is disclosed. To balance the system, each terminal box maximum airflow setting is automatically and continuously adjusted in response to central supply fan loading conditions together with local zone conditions. The new system has the advantage of automating both initial air balancing of terminal units at the time of installation, as well as rebalancing to respond to changing conditions, without technician intervention. Substantial savings in energy cost can be achieved since the operating curve of each terminal unit is automatically adjusted to demand no more conditioned air volume than necessary.