Study, Design, and Analysis of Geothermal Cooling System and Its Possibilities in the Terai Region of Nepal

Aryal, Manish; Pun, Sirjana; Yadav, Apurwa; Basnet, Bimala

doi:10.1007/s40032-021-00669-9

Cited by 2 publications

(1 citation statement)

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“…The authors found that the basic natural materials used there in buildings were excellent thermal insulators for the severe ambient temperatures of the area. Most of the studies presented above were devoted to the conversion of geothermal energy for heating and power applications [24][25][26]; however, few, if any, studies investigated the use of a geothermal heat-sink for dissipating the heat released in absorptioncooling systems. In this paper, a feasibility study is presented, using a geothermal heatsink for the condenser and the absorber of low-capacity water-LiBr single-and doubleeffect absorption-cooling cycles operating in hot climates.…”

Section: System Modellingmentioning

confidence: 99%

Performance Analysis of Low-Capacity Water–LiBr Absorption–Cooling Systems Using Geothermal Heat-Sinks in Hot Climates

et al. 2023

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This paper addresses the use of a geothermal heat-sink to remove the heat released in domestic-sized single and double-effect water–LiBr absorption chillers operating in hot climates. This study is the continuation of a previous work, which demonstrated the operational constraints of these absorption chillers working in hot Algerian climate-zones. After localizing the non-operation zones for both systems, the thermo-physical properties of the soil at several depths are investigated for the implementation of the underground heat-exchanger. This heat-exchanger is connected to the condenser and the absorber of both systems, to supply cooling water at inlet temperatures of 33 °C in hot climate conditions, with ambient temperatures varying from 38 °C to 42 °C. The results show a steady operation for both absorption chillers in climate conditions which had not previously allowed the two systems to operate in water or air-cooled modes. A maximum coefficient of performance of 0.76 and 1.25 is obtained for single- and double-effect absorption cycles, respectively, with chilled water at 7 °C. The underground-tube length required is between 4.5 and 18 m, depending on the absorption-cycle configuration and the temperature of the chilled water.

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Section: System Modellingmentioning

confidence: 99%