Energy exchange method and apparatus
US4781240A · kind A · utility
1Cited by
1References
16Claims
0Family size
Inventor
Key dates
| Filing date | Mar 10, 1988 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Mar 10, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/56
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
An air to air heat exchanger for ventilating buildings has the air streams maintained in direct contact with little mixing by tangentially introducing the air streams along cylindrical surfaces in opposite directions to form spiral, counterflows. Valves are provided to switch the flows for winter and summer operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.