Method and apparatus for controlling the flow of a temperature r

Details Method and apparatus for controlling the flow of a temperature r Method and apparatus for controlling the flow of a temperature r

1978-09-17

1981-03-24

Wayner, William E.

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

236 49, 361384, 73204, G05D 2300, H02B 100, F24F 700

Patent

active

042575524

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.

REFERENCES:
patent: 3415178 (1968-12-01), Ball et al.
SAE Aerospace Applied Thermodynamics manual, second edition, 1969, pp. 479-487.

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