Concentration control in an absorption chiller

Details Concentration control in an absorption chiller Concentration control in an absorption chiller

1994-07-20

1996-12-24

Bennett, Henry A.

Refrigeration

Automatic control

Of closed system sorbent type

62148, F25B 1506

Patent

active

055864473

ABSTRACT:
A process for controlling an absorbent-refrigerant solution concentration in an absorption cooling system to prevent crystallization of the solution in which the crystallization temperature of the absorbent-refrigerant solution is calculated and the temperature of an absorbent-enriched solution, or strong solution, from the absorption unit heat exchanger is measured. Based upon the crystallization temperature and the measured absorbent-enriched solution temperature, the concentration of the absorbent is calculated using an iteration algorithm. Based upon the calculated concentration of absorbent in the absorbent-enriched solution, the concentration of the absorbent-enriched solution is adjusted by adjusting the heat input to the absorption system generator to prevent crystallization of the absorbent.

REFERENCES:
patent: 3604216 (1971-09-01), Porter
patent: 3626710 (1971-12-01), Porter
patent: 3626711 (1971-12-01), Porter
patent: 4269034 (1981-05-01), Rzechula
patent: 4572830 (1986-02-01), Biermans et al.
patent: 4676870 (1987-06-01), Stewart et al.
patent: 5246593 (1993-09-01), Gallup
patent: 5255534 (1993-10-01), Ryan
patent: 5294357 (1994-03-01), Ally et al.

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