Heat recovery system
US5758820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1997 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jan 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1931
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A heat recovery system (including associated methods, apparatus and controls for implementing such a system) integrated in a hot water heating system that is combinable with an air conditioning loop containing hot gas wherein the hot water system selectively utilizes heat recovered from the hot gas to produce and store hot water at a preselected temperature level requiring the use of only a single water storage tank. According to one aspect of the invention, hot gas is taken from the air conditioning loop and placed directly into a heat exchanger coil immersed in the water storage tank for selective use therein to produce hot water. According to a further aspect of the invention, a control means is provided to monitor and analyze water temperatures at a plurality of locations within the water storage tank; determine the presence of hot gas and its temperature; and, as a function of the set point for the hot water heating system, selectively activate at least one of a plurality of heaters located in the water storage tank. The heaters include a heat exchanger that may be energized by the hot gas when the gas is at a desirable temperature and available for use; and at least one other…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.