The effect of using a heat recovery absorber on the performance and operating cost of the solar ammonia absorption cycles

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Journal of Solar Energy Engineering

DOI:https://doi.org/10.1115/1.2871802· OSTI ID:488924

Saghiruddin,; Siddiqui, M A ^[1]

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1. Aligarh Muslim Univ. (India). Dept. of Mechanical Engineering

Economic analysis of ordinary and evacuated tubular type flat-plate collectors have been carried out for operating absorption cycles with and without heat recovery absorber. Water-ammonia, NaSCN-NH{sub 3} and LiNO{sub 3}-NH{sub 3} have been selected as the working fluids in the cycles. Use of a heat recovery absorber, in addition to the primary absorber in the conventional absorption cycles, lead to improvement in the system performances by about 20--30% in the H{sub 2}O-NH{sub 3} and 33--36% in the NaSCN-NH{sub 3} and LiNO{sub 3}-NH{sub 3} mixtures. Subsequently, there is a considerable amount of reduction in the cost of the solar collector required to operate them. For the set of operating conditions, in this theoretical study, the cost reduces to about 25% in the H{sub 2}O-NH{sub 3} and 30% in the NaSCN and LiNO{sub 3}-NH{sub 3} cycles.

• Sponsoring Organization: USDOE
• OSTI ID: 488924
• Journal Information: Journal of Solar Energy Engineering, Journal Name: Journal of Solar Energy Engineering Journal Issue: 1 Vol. 119; ISSN JSEEDO; ISSN 0199-6231
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
ABSORPTION REFRIGERATION CYCLE
AMMONIA
EVACUATED TUBE COLLECTORS
FLAT PLATE COLLECTORS
HEAT RECOVERY EQUIPMENT
SOLAR-ASSISTED HEAT PUMPS
WASTE HEAT UTILIZATION