Dynamic analysis and operation simulation for a combined cooling heating and power system driven by geothermal energy

被引：18

作者：

Cao, Liyan ^{[1
,2
]}

Wang, Jiangfeng ^{[1
]}

Yang, Yi ^{[1
]}

Wang, Yaxiong ^{[1
]}

Li, Hang ^{[3
]}

Lou, Juwei ^{[2
]}

Rao, Qiqi ^{[2
]}

Li, Yan ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Inst Turbomachinery, Sch Energy & Power Engn, Shaanxi Engn Lab Turbomachinery & Power Equipment, Xian 710049, Peoples R China

[2] Nucl Power Inst China, Sci & Technol Reactor Syst Design Technol Lab, Chengdu 610213, Peoples R China

[3] Zhengzhou Univ, Sch Mech & Power Engn, Zhengzhou 450001, Peoples R China

来源：

ENERGY CONVERSION AND MANAGEMENT | 2021年 / 228卷

基金：

中国国家自然科学基金;

关键词：

Geothermal energy; Combined cooling heating and power system; Dynamic performance; Off-design performance; Operation simulation; ORGANIC-RANKINE-CYCLE; DESIGN PERFORMANCE ANALYSIS; EFFECT ABSORPTION CHILLER; THERMODYNAMIC CYCLE; PARAMETRIC ANALYSIS; PRESSURE-DROP; REFRIGERATION; OPTIMIZATION; RECOVERY; CONSTRUCTION;

D O I：

10.1016/j.enconman.2020.113656

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The geothermal energy is a renewable energy resource, which is viewed as a promising alternative to fossil energy. Powered by geothermal energy, the combined cooling heating and power (CCHP) system can potentially become an option for efficient energy supply. However, the operation of the CCHP system is subject to energy demand and temperature degradation of geothermal water. To capture the dynamic characteristics and off-design performance of CCHP system under different working conditions, the dynamic mathematical models of a CCHP system is established and a control strategy is proposed. On this basis, the effect of heating/cooling load on the dynamic behavior of the CCHP system is analyzed and the effect of temperature degradation of geothermal water on the off-design performance is investigated. The results indicate that the lower heating/cooling load leads to greater overshoot and longer settling time in the dynamic process. The settling time of Cooling-Power mode is much longer than that of Heating-Power mode. As the temperature of geothermal water decreases from 120 degrees C to 108 degrees C, the heating capacity of the CCHP system decreases by 28.87% and the cooling capacity decreases by 14.72%. In addition, the operation simulation shows that the CCHP system can precisely track hourly heating and cooling load of the student dorm building.

引用

页数：24

共 65 条

[1]

[Anonymous], 2012, ANAL SYNTHESIS DESIG, DOI DOI 10.5860/CHOICE.36-0974

[2]

Bejan A., 1995, Thermal Design and Optimization

[3]

Bergman TL., 1990, FUNDAMENTALS HEAT MA

[4] Optimization of a novel combined cooling, heating and power cycle driven by geothermal and solar energies using the water/CuO (copper oxide) nanofluid [J].

Boyaghchi, Fateme Ahmadi ;

Chavoshi, Mansoure ;

Sabeti, Vajiheh .

ENERGY, 2015, 91 :685-699

[5] Thermoeconomic assessment and multi objective optimization of a solar micro CCHP based on Organic Rankine Cycle for domestic application [J].

Boyaghchi, Fateme Ahmadi ;

Heidarnejad, Parisa .

ENERGY CONVERSION AND MANAGEMENT, 2015, 97 :224-234

[6]

British Petroleum, 2019, BP STAT REV WORLD EN

[7]

British Petroleum, 2019, BP STAT REV WORLD EN, V68th

[8] Thermoeconomic Analysis and Multi-Objective Optimization of a Combined Cooling and Power System Using Ammonia-Water Mixture: Case Study [J].

Cao, Liyan ;

Wang, Jiangfeng ;

Chen, Liangqi ;

Lou, Juwei ;

Wang, Jianyong ;

Dai, Yiping .

JOURNAL OF ENERGY ENGINEERING, 2018, 144 (03)

[9]

China Energy Research Society, 2018, ANN REP CHIN EN DEV

[10] ON PREDICTION OF OFF-DESIGN MULTISTAGE TURBINE PRESSURES BY STODOLA ELLIPSE [J].

COOKE, DH .

JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 1985, 107 (03) :596-606

← 1 2 3 4 5 6 7 →