Triple-effect absorption refrigeration system with double-condenser coupling
AssigneeMartin Marietta Energy Systems, Inc.
InventorsRobert C. DeVault, Wendell J. Biermann
Life of this patent
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Abstract
A triple effect absorption refrigeration system is provided with a double-condenser coupling and a parallel or series circuit for feeding the refrigerant-containing absorbent solution through the high, medium, and low temperature generators utilized in the triple-effect system. The high temperature condenser receiving vaporous refrigerant from the high temperature generator is double coupled to both the medium temperature generator and the low temperature generator to enhance the internal recovery of heat within the system and thereby increase the thermal efficiency thereof.
Claims18
A multiple-effect absorption refrigeration system having a double-coupled condenser, said system comprising:
- first, second and third generator means, first, second and third condensing means, evaporating means, and absorber means operatively coupled together and with the first, second and third condensing means adapted to respectively receive vaporous refrigerant from the first, second and third generator means for condensing the vaporous refrigerant;
- means for heating refrigerant-containing absorption solution in the third generator means to a first refrigerant-vaporizing temperature;
- first heat exchange means operatively associated with the third condensing means and the second generator means for heating refrigerant-containing absorption solution in the second generator means to a second refrigerant-vaporizing temperature that is lower than said first temperature;
- second heat exchange means operatively associated with the second condensing means and the first generator means for providing heat to the refrigerant-containing adsorption solution in the first generator means;
- and
- heat transfer means for combining heat from refrigerant condensed in the third condensing means with the heat provided to the refrigerant-containing solution in the first generator means by the second heat exchange means for heating the refrigerant-containing solution in the first generator means to a third refrigerant-vaporizing temperature that is lower than said second temperature, said heat transfer means comprising means for combining the condensed refrigerant from the third condensing means with vaporous refrigerant from the second generator means prior to being received by the second condensing means.
A method for operating a multiple-effect absorption refrigeration system comprising first, second and third generator means and condensing means, evaporating means, and absorber means operatively coupled together and with the first, second and third condensing means respectively receiving and condensing hot vaporous refrigerant from the first, second and third generator means, said method comprising:
- heating refrigerant-containing absorption solution in the third generator means to a first temperature for vaporizing refrigerant contained therein;
- utilizing heat from the third condensing means for heating refrigerant-containing absorption solution in the second generator means to a second refrigerant-vaporizing temperature that is lower than said firs temperature;
- and
- utilizing heat form the third condensing means with heat provided to the second condensing means by combining a stream of condensed from the third condensing means with a stream of vaporous refrigerant form the second generator means the vaporous refrigerant form the second generator means prior to the reception of the vaporous refrigerant by the second condensing means for heating refrigerant-containing absorption solution in the first generator means to a third refrigerant-vaporizing temperature that is lower than said second temperature.
Dependencies are inferred from the claim text.