Refrigeration system energy management control device and method

Details Refrigeration system energy management control device and method Refrigeration system energy management control device and method

1982-03-12

1984-12-11

King, Lloyd L.

Refrigeration

Processes

Evaporation induced by sorption

62141, 62148, 62476, F25B 1500

Patent

active

044870264

ABSTRACT:
A control device for an absorption system interrupts a pneumatic signal controlling the demand for chilled water by utilizing a single port direct acting controller to which is fed a chilled water return temperature signal. The single port direct acting controller provides a continuous signal to control the heating source utilized in providing the chilled water as a real time function of the temperature of the chilled water returning from an associated cooled building, as well as the internal controls of the absorption system. Thus, the control device provides an optimal decision value, factoring all dynamic operating variations which affect chilled water return temperature, for the control of the heating source utilized in providing chilled water, thereby reducing the fuel consumption of the absorption refrigeration system. Alternatively, a dual port direct acting controller is added, to which are fed an outdoor air humidity signal and an outdoor air temperature signal. The dual port direct acting controller provides a signal to control the heating source utilized in providing the chilled water as a function of the outside air temperature and outside air humidity to enhance control system flexibility and operator options.

REFERENCES:
patent: 4322951 (1982-04-01), Alfano

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