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Thermodynamic analysis of a combined cooling, heating, and power system integrated with full-spectrum hybrid solar energy device

机译：具有全谱混合太阳能装置集成的组合冷却，加热和电力系统的热力学分析

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摘要

This paper proposes a combined cooling, heating, and power system integrated with full-spectrum hybrid solar energy device containing molecular solar thermal system and solar water heating system to improve solar energy utilization efficiency. This system comprehensively integrates solar energy, fuel chemical energy and waste heat energy based on methanol decomposition to optimize energy utilization method. The thermodynamic models of components are established and the system evaluation indicators are presented. Based on a rated power of 834 kW, the thermodynamic performances under the design conditions were simulated and analyzed using Engineering Equation Solver, and the Sankey diagrams of energy and exergy flows were obtained in the respective cooling and heating modes. The results indicated that the solar energy share reaches 45.07%, and the energy and exergy efficiencies in cooling mode are 70.65% and 26.59%, respectively. They are increased by 1.52% and 1.92% in heating mode, respectively. The influences of various solar irradiation and power load ratio on system performances are discussed. The results indicate that the power load ratio and direct normal irradiance have positive impacts on energy and exergy efficiencies whereas they have negative impacts on solar energy share. Compared to the conventional methanol direct-fired system, the primary energy saving ratio and carbon dioxide emission reduction ratio of the proposed system reaches 16.20% and 16.14%, respectively.
机译：本文提出了一种组合的冷却，加热，和电源用含有分子太阳能热系统和太阳能热水系统，以提高太阳能利用效率的全光谱的混合太阳能装置的集成系统。该系统全面集成太阳能能源，燃料化学能和基于甲醇分解，以优化能量利用方法浪费热能。组件的热力学模型建立和系统评价指标呈现。基于834千瓦的额定功率时，设计条件下的热力学性能进行了模拟以及使用工程方程求解分析，并在相应的冷却模式和加热模式中获得的能量和有效能流的桑基图。结果表明，太阳能占有率达45.07％，而在冷却模式下的能量和有效能效率分别70.65％和26.59％。它们在加热模式分别增加了1.52％和1.92％。各种太阳能辐射和功率负载比的上系统性能的影响进行了讨论。结果表明，电源负载比和直接正常辐照度对能量和有效能效率的正面影响，而它们对太阳能份额的负面影响。相比于常规的甲醇直燃系统中，主节能所提出的系统的比率和二氧化碳排放量削减率达到16.20分别％和16.14％。

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