The integration of absorption refrigeration system, parabolic trough collectors, and ice storage system to augment power generation capability of gas turbine power plant

Q1 Chemical Engineering

International Journal of Thermofluids Pub Date : 2025-08-06 DOI:10.1016/j.ijft.2025.101364

Somchart Chantasiriwan

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Abstract

Gas turbine power plant yields reduced power output in hot climates. Cooling of inlet air that is supplied to compressor of gas turbine unit results in increasing power output. Absorption refrigeration system and parabolic trough collectors may be used to for this purpose. In this paper, a modification of this method of inlet air cooling by adding ice storage system is investigated. Cooling coils in ice storage tank work as evaporator of absorption refrigeration system. Air temperature is decreased due to heat transfer to circulating cooling water supplied by ice storage tank. The reference gas turbine power plant operating without inlet air cooling system is compared with two integrated systems. The first integrated system uses absorption refrigeration system and parabolic trough collectors. The second integrated system uses absorption refrigeration system, parabolic trough collectors, and ice storage system. The reference power plant generates 115.43 MW. Simulation results show that using absorption refrigeration system and parabolic trough collectors can increase the annual energy output by 5.03 %. Adding ice storage system can further increase the annual energy output by 1.41 %.

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采用吸收式制冷系统、抛物槽式集热器和蓄冰系统相结合，提高燃气轮机电站的发电能力

在炎热的气候下，燃气轮机发电厂的输出功率会降低。对燃气轮机机组压缩机的进风进行冷却，可以提高机组的输出功率。吸收式制冷系统和抛物面槽式集热器可用于此目的。本文对这种进气冷却方式进行了改进，加入了蓄冰系统。蓄冰槽内的冷却盘管是吸收式制冷系统的蒸发器。由于蓄冰槽提供的循环冷却水传热，降低了空气温度。对无进气冷却系统的参考燃气轮机动力装置与两套综合系统进行了比较。第一个集成系统采用吸收式制冷系统和抛物面槽式集热器。第二个综合系统采用吸收式制冷系统、抛物面槽式集热器和冰蓄冷系统。参考电厂的发电量为115.43兆瓦。仿真结果表明，采用吸收式制冷系统和抛物面槽式集热器可使年发电量提高5.03%。增设冰蓄冷系统可使年发电量进一步提高1.41%。

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