The multi-goal optimal analysis of stand-alone gas engine heat pump system with energy storage (ESGEHP) system

Zhang, Qiang; Yang, Zhao; Gao, Yide

doi:10.1016/j.enbuild.2017.01.039

Cited by 14 publications

(12 citation statements)

References 18 publications

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“…Energy stored in this way can be transferred to utility needs. An example of such an analysis can be found in [64][65][66], where the results showed a reduction in the fuel consumption of the system and an increase in the efficiency of the whole system. The use of energy storage leads to a significant improvement for the entire system [67] by increasing the PER index by even 67.87% for the appropriate operating mode compared to the standard GEHP solution.…”

Section: Gas Engine Heat Pump With Energy Storagementioning

confidence: 99%

Review of Gas Engine Heat Pumps

Pawela

Jaszczur

2022

Energies

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In this paper the most promising developments of technology for gas engine-driven heat pumps for the last 15 years are presented. The purpose is to present the latest research studies and changes in this type of device, as well as to help readers to search for publications containing relevant aspects of gas engine heat pumps. Gas engine-driven heat pumps are devices for parallel heating and cooling production based on compressor heat pump technology. However, unlike heat pumps with compressors powered by electric motors, gas engine-driven heat pumps are driven by gas internal combustion engines. The reviewed solutions are an interesting alternative to traditional heating systems, characterized by the higher than 1.0 Performance Energy Ratio which expresses the degree of conversion of the energy contained in the fuel supplied to the device into energy transported to the utility needs. Presented in this review, papers show different solutions for conversion of the energy contained in the fuel into mechanical and thermal energy, and mechanical energy through the shaft system is used to drive the compressor of the heat pump. The presented study shows that, due to the complexity of the system and the wide range of applications, the technology has been subjected to detailed analyses and optimizations during the last 30 years in order to increase the efficiency of devices.

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Section: Gas Engine Heat Pump With Energy Storagementioning

confidence: 99%

Review of Gas Engine Heat Pumps

Pawela

Jaszczur

2022

Energies

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“…Yang and other authors, a research group of Tianjin University (China), reported theoretical and experimental analysis of a GEHP system [38,[100][101][102][103][104][105][106][107][108][109][110][111][112].…”

Section: Tianjin University China (2003-2019)mentioning

confidence: 99%

“…In [109], a GEHP integrating electricity, thermal and cooling storages is analysed on both an experimental and simulation basis. This unit is designed with the aim to have a stand-alone GEHP system with appropriate size of energy storages as well as an appropriate control system.…”

Section: Tianjin University China (2003-2019)mentioning

confidence: 99%

Gas Engine-Driven Heat Pumps for Small-Scale Applications: State-of-the-Art and Future Perspectives

2021

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Gas engine-driven heat pumps are an interesting option to satisfy space heating and cooling demands aiming at energy saving, environmental impact and operating costs’ reduction. This work presents (i) a comprehensive review updated on gas engine-driven heat pumps research activities, (ii) the investigation of the central role of this technology in the air conditioning sector and (iii) the future perspectives regarding gas engine heat pumps’ diffusion in the context of the energy sector decarbonisation. The outcomes highlight that gas engine heat pumps could have better environmental performance compared to electric heat pumps both in heating and cooling operations. Moreover, they could play a pivotal role in the fight against climate change and energy security since they can guarantee an energy mix differentiation moving from electricity to natural gas and renewable gases’ usage. Indeed, by 2030, a lower-carbon gas grid could be supported by renewable gases. A further investigation has concerned diffusion of gas heat pumps activated from biofuels produced by local biomass in an energy community scenario based on a low-temperature energy district network. A novel biomass-based GEHP interacting with a low-temperature district heating network is proposed here. This system could save more than 30% of primary energy compared to biomass-fuelled boilers.

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“…From a review of reference literature, the use of balance equations to evaluate the performance of a GEHP is highlighted by analysis using energy and exergy balances on the complete unit [3,10], or each element of the system [6]. These studies shed light on the internal behaviour of these units and enable exergoeconomic analysis for decision making in environmental policy definition algorithms, as shown in [18].…”

Section: Thermal Evaluationmentioning

confidence: 99%

“…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%