Study on the heating performance and optimal intermediate temperature of a series gas engine compression-absorption heat pump system

Liu, Fengguo; Dong, Fujiang; Li, Yajun; Jia, Leilei

doi:10.1016/j.applthermaleng.2018.02.010

Cited by 12 publications

(6 citation statements)

References 23 publications

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“…Therefore, because of its relatively low quality, the exhaust heat is neglected. The TCHS offers the possibility of reusing the waste heat by recycling and upgrading it [7,[14][15][16][17][18][19][20]. In addition, when the heat request is located at a certain distance from the supply, this heat can be conveyed.…”

Section: General Concepts Of Tchsmentioning

confidence: 99%

Recent Status and Prospects on Thermochemical Heat Storage Processes and Applications

Gbenou

Fopah-Lele

Wang

2021

Entropy

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Recent contributions to thermochemical heat storage (TCHS) technology have been reviewed and have revealed that there are four main branches whose mastery could significantly contribute to the field. These are the control of the processes to store or release heat, a perfect understanding and designing of the materials used for each storage process, the good sizing of the reactor, and the mastery of the whole system connected to design an efficient system. The above-mentioned fields constitute a very complex area of investigation, and most of the works focus on one of the branches to deepen their research. For this purpose, significant contributions have been and continue to be made. However, the technology is still not mature, and, up to now, no definitive, efficient, autonomous, practical, and commercial TCHS device is available. This paper highlights several issues that impede the maturity of the technology. These are the limited number of research works dedicated to the topic, the simulation results that are too illusory and impossible to implement in real prototypes, the incomplete analysis of the proposed works (simulation works without experimentation or experimentations without prior simulation study), and the endless problem of heat and mass transfer limitation. This paper provides insights and recommendations to better analyze and solve the problems that still challenge the technology.

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Section: General Concepts Of Tchsmentioning

confidence: 99%

Recent Status and Prospects on Thermochemical Heat Storage Processes and Applications

Gbenou

Fopah-Lele

Wang

2021

Entropy

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“…3.1.36. Tianjin Chengjan University, China (2016-2020) Liu et al [180][181][182][183][184][185][186][187] performed an experimental analysis on a GEHP system and also modelled a compression-absorption GEHP unit at Tianjin Chengjan University (China).…”

Section: University Of the Ryukyus Japan (2015)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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“…Both of them [34,35] are useful to understand this technology and define the best experiments to analyse these units. Moreover, Fengguo et al [12] experimentally demonstrated that it is possible to define optimal operating instructions for GEHP systems and, the importance of taking them into account in the design of this type of facilities. Accordingly, experimental studies about GEHP have been well treated in the existing publications.…”

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%

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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Study on the heating performance and optimal intermediate temperature of a series gas engine compression-absorption heat pump system

Cited by 12 publications

References 23 publications

Recent Status and Prospects on Thermochemical Heat Storage Processes and Applications

Recent Status and Prospects on Thermochemical Heat Storage Processes and Applications

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

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

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