This study focuses on a solar-assisted trigeneration system, designed to meet the electricity, cooling, and heat demands of a residential consumer center. This is the first study to consider different dead state temperatures in the exergy assessment (10–30 °C) of a system containing an absorption chiller. Mass, energy and exergy balances were developed, and the exergy model is based on the SPECO methodology. The COP of the absorption system increases with the temperature of the heat source of exhaust gases. The maximum cooling output is 264.15 kW, with a COP of 1.2, when the ratio exhaust gas/hot water is 0.77:1. When increasing the dead state temperature, there is a slight decrease in the exergy efficiency of the engine and solar system. The exergy efficiency of the absorption chiller is 79.75% for a dead state temperature of 10 °C, changing to 3.66% at 15 °C, 8.06% at 20 °C, 12.69% at 25 °C, and finally 17.57% at 30 °C. The behavior of the overall system is similar, and a consequence of the product and fuel definitions employed by SPECO. This analysis of dead state temperatures is useful for exergoeconomic and exergoenvironmental analyses, as it avoids inconsistencies such as negative cost rates or environmental impact rates.

本研究侧重于太阳能辅助三联产系统，旨在满足住宅消费中心的电力、冷却和热需求。这是第一项在包含吸收式制冷机的系统的火用评估 (10–30 °C) 中考虑不同死区温度的研究。开发了质量、能量和火用平衡，并且火用模型基于 SPECO 方法。吸收系统的COP随着废气热源的温度而增加。当废气/热水比为0.77:1时，最大冷却输出为264.15 kW，COP为1.2。当增加死区温度时，发动机和太阳能系统的火用效率略有下降。吸收式制冷机的火用效率在死态温度为 10 °C 时为 79.75%，变为 3。15 °C 时为 66%，20 °C 时为 8.06%，25 °C 时为 12.69%，最后 30 °C 时为 17.57%。整个系统的行为是相似的，这是 SPECO 采用的产品和燃料定义的结果。这种死态温度分析对于运动经济和运动环境分析很有用，因为它避免了不一致，例如负成本率或环境影响率。