Cooling system having coolant mass flow control

Details Cooling system having coolant mass flow control Cooling system having coolant mass flow control

1991-04-01

1992-07-21

Makay, Albert J.

Refrigeration

Automatic control

Air compessor, cooler and expander

62197, 62402, 62513, F28B 900

Patent

active

051312352

ABSTRACT:
A cooling system includes a turbo compressor for compressing a coolant and a turbo expander fluidically connected to the turbo compressor via one or more heat radiators. In order to insure a constant expansion ratio in the turbo expander at all operating temperatures, without varying the rotational speed of the turbo compressor, a first controller controls the flow rate of coolant to the turbo expander while a second controller in a bypass passage controls a flow rate of coolant bypassed to the intake side of the turbo compressor. The first and second controllers are controlled by a control unit sensitive to the coolant temperature at the intake side of the turbo expander.

REFERENCES:
patent: 3095710 (1963-07-01), Clark
patent: 3200613 (1965-08-01), Zotos
patent: 3321930 (1967-05-01), La Fleur
patent: 4248055 (1981-02-01), Day, III et al.
patent: 4835979 (1989-06-01), Murry et al.

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