Parametric analysis of a new combined cooling, heating and power system with transcritical CO2 driven by solar energy
Parametric analysis of a new combined cooling, heating and power system with transcritical CO2 driven by solar energy
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太阳能驱动的跨临界二氧化碳新型冷热电联产系统的参数分析
DOI：
10.1016/j.apenergy.2012.01.007
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发表时间：
2012-06
期刊：
影响因子：
11.2
通讯作者：
Dai Yiping
中科院分区：
文献类型：
--
作者：
Wang Jiangfeng;Zhao Pan;Niu Xiaoqiang;Dai Yiping
为了利用可再生能源满足不同的能源需求，提出了一种新的冷热电联产（CCHP）系统，该系统可同时产生冷、热、电输出。该系统将布雷顿循环和跨临界CO2制冷循环结合起来，利用太阳能作为热源，减少化石燃料的消耗，缓解环境问题。建立了太阳能跨临界CO2冷热电联供系统的稳态数学模型，并以热效率和火用效率评价系统性能。几个关键的热力学参数对系统性能的影响进行了检查。结果表明，增大涡轮机进口压力和引射器进口温度会降低系统效率，增大涡轮机背压和涡轮机进口温度可以提高系统效率。此外，随着喷射器背压的增加，系统的热效率降低，但火用效率增加。
In order to utilize renewable energy to meet diverse energy requirements, a new combined cooling, heating and power (CCHP) system is proposed to produce cooling output, heating output and power output simultaneously. This proposed system combines a Brayton cycle and a transcritical CO2refrigeration cycle with ejector-expansion device, which uses solar energy as the heat source to reduce fossil fuel consumption and alleviate environmental problems. A mathematical model is developed to simulate the new CCHP system with transcritical CO2driven by solar energy under steady-state conditions, and the thermal efficiency and exergy efficiency are used to evaluate the system performance. The effects of several key thermodynamic parameters on the system performance are examined. The results indicate that increasing turbine inlet pressure and ejector inlet temperature could lower the efficiency of the system, and increasing turbine back pressure and turbine inlet temperature could elevate the efficiency of system. In addition, as ejector back pressure increases, the thermal efficiency of system decreases, but the exergy efficiency increases.
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影响因子：
9
作者：
J. Sarkar
通讯作者：
J. Sarkar
DOI：
10.1016/0140-7007(94)90059-0
发表时间：
1994-06-01
期刊：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
影响因子：
--
作者：
LORENTZEN, G
通讯作者：
LORENTZEN, G
影响因子：
6.4
作者：
X. Kong;Ruzhu Wang;X. Huang
通讯作者：
X. Kong;Ruzhu Wang;X. Huang
影响因子：
2.4
作者：
G. Dong;Sui Jun
通讯作者：
G. Dong;Sui Jun
DOI：
10.1115/es2009-90081
发表时间：
2009
期刊：
--
影响因子：
--
作者：
N. Fumo;L. Chamra;V. Bortone
通讯作者：
N. Fumo;L. Chamra;V. Bortone