The influence of building using function on the operating characteristics of the gas engine driven heat pump with energy storage system (ESGEHPs)

Zhang, Qiang; Yang, Zhao; Li, Ning; Feng, Rui; Gao, Yide

doi:10.1016/j.enbuild.2018.02.039

Cited by 17 publications

(13 citation statements)

References 18 publications

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“…Engine coolant cycle: ethylene glycol-water is used as engine coolant to cool the engine. The coolant flows through the exhaust gas heat exchanger (14) where it absorbs heat from the exhaust gas and then the engine cylinder heat exchanger (15) where it cools engine to ensure the engine's stable and efficient operation, and meanwhile it removes heat from the engine cylinder. In the heating mode, after the coolant receives the engine waste heat, it is introduced into the heat pump waste heat recovery exchanger (11) where it exchanges energy with the refrigerant from the evaporator and is cooled down for next cycle.…”

Section: Gehp System Working Principle and Experimental Setupmentioning

confidence: 99%

“…In the cooling mode, after the coolant receives the waste heat, it is used to heat water to provide hot water to the buildings. In the engine coolant cycle, the coolant's mass flow rate, the coolant temperatures at the inlet and outlet of the waste heat recovery exchanger (11), the exhaust gas heat exchanger (14) and the engine cylinder (15), are all measured. The heat recovered from the engine cylinder and exhaust gas is calculated based on the coolant mass flow rate and temperature differences.…”

Section: Gehp System Working Principle and Experimental Setupmentioning

confidence: 99%

“…The results showed that the effect of the evaporator water inlet temperature and gas engine speed on the system performance was more significant than the ambient air temperature. Zhang et al [15] studied the GEHP system with energy storage system when supplying heating and cooling to the different types of buildings. The results showed that the GEHP integrated with an energy storage system could be used in different types of buildings with a more stable operation characteristic, higher PER and more suitable performance.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study of a Gas Engine-driven Heat Pump System for Space Heating and Cooling

et al. 2019

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In this paper, the performance of a gas engine-driven heat pump (GEHP) was experimentally studied for space heating and cooling. An experimental test facility was developed for this purpose. The effect of key parameters on system performance was investigated under both cooling and heating modes. The results showed that as the engine speed increased from 1400 to 2000 rpm, the cooling and heating capacities increased by 23% and 28.5%, respectively while the GEHP system Primary Energy Ratio (PER) decreased by 13.5% and 11.7% in the cooling and heating modes, respectively. The system PER in the cooling mode was found lower than that in the heating mode. This indicated that heat recovery from the engine cylinder and exhaust gas was very important for improving the GEHP system performance. In the heating mode, the ambient temperature and condenser water flow rate had a large effect on the system heating capacity and PER, and insignificant effect on the gas energy input. In the cooling mode, the chilled water inlet temperature showed a large effect on both cooling capacity and gas energy input while the chilled water flow rate had a large effect on cooling capacity and insignificant effect on the gas energy input.

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Section: Gehp System Working Principle and Experimental Setupmentioning

confidence: 99%

Section: Gehp System Working Principle and Experimental Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Study of a Gas Engine-driven Heat Pump System for Space Heating and Cooling

et al. 2019

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“…Hence the activities in the field of replacing low-efficient heating boilers with modern energy-saving devices, and the modernization of the installation allowing for the maximization of work efficiency or the integration of various installation systems [3][4][5]. Another way to reduce the energy consumption in a building can also be an investment in renewable energy sources [6,7], including the installation of DWHR (Drain Water Heat Recovery) enabling the recovery of waste heat from sewage systems [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

An assessment of the financial efficiency of a heat recovery system from graywater in a hotel

Mazur

2018

E3S Web Conf.

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The purpose of the article is to determine the profitability of investing in a graywater heat recovery system in a hotel facility located in south-eastern Poland whichis dependent on three heat sources for the domestic hot water preparation system, i.e. gas boiler, biomass boiler and electric heater. There were also various options for accommodation use: 25%, 50%, 75% and 100% occupancy of the hotel. The research was focused on the most frequently used methods for the absolute assessment of the effectiveness of investment projects enabling the creation of an objective criterion. Thus, both the simple method - Simple Pay Back Period SPBP and dynamic methods based on the discount account were used in calculations: Net Present Value NPV, Internal Rate of Return IRR, Profitability Index PI, Discounted Pay Back Period DPBP. The analysis also includes the annual increase in the purchase price of energy carriers. The conducted research has shown that in most cases the installation of the DWHR (Drain Water Heat Recovery) system is beneficial and profitable to the investor.

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“…Besides, manufacturers have few different units, because they propose to use thermal energy storage, parallel installations and efficiency control systems to achieve high efficiency [5]. To ensure that GEHPs operate within the best economic zone, researchers propose combining GEHPs with hybrid power technology [6][7][8][9], energy storage technology [10,11], absorption heat pump [12] and photovoltaic integration [13][14][15]. These studies demonstrate the potential of these systems in combination with conventional installations.…”

mentioning

confidence: 99%

Gas engine heat pump system: Experimental facility and thermal evaluation for 5 different units

Ramos

Delgado

Domínguez

et al. 2019

Energy Conversion and Management

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The influence of building using function on the operating characteristics of the gas engine driven heat pump with energy storage system (ESGEHPs)

Cited by 17 publications

References 18 publications

Experimental Study of a Gas Engine-driven Heat Pump System for Space Heating and Cooling

Experimental Study of a Gas Engine-driven Heat Pump System for Space Heating and Cooling

An assessment of the financial efficiency of a heat recovery system from graywater in a hotel

Gas engine heat pump system: Experimental facility and thermal evaluation for 5 different units

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