Method and apparatus for controlling the flow of a temperature regulating fluid
US4257552A · kind A · utility
10Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1978 |
| Grant date | Mar 24, 1981 |
| Priority date | — |
| Expiry date | Sep 17, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/19
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A closed loop control apparatus utilizes a cooling effect sensor to measure the cooling capacity of a fluid in a supply conduit connected to one or more thermal loads. The sensor includes an electrical heater that is regulated to heat a sampled portion of the cooling fluid at a known rate, and a temperature sensor positioned downstream of the heater to measure the temperature of the heated fluid and thereby determine the cooling effect or capacity of the fluid. A control signal developed by the temperature sensor is fed back to a flow modulating valve that adjusts the flow of cooling fluid to the thermal loads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.