Combination principle of hybrid sources and three typical types of hybrid source heat pumps for year-round efficient operation

Li, Xianting; Lyu, Weihua; Ran, Siyuan; Wang, Baolong; Wu, Wei; Yang, Zixu; Jiang, Suhua; Cui, Meng; Song, Pengyuan; You, Tingting; Shi, Wenxing

doi:10.1016/j.energy.2019.116772

Cited by 23 publications

(5 citation statements)

References 36 publications

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“…With the proposed fuzzy Cauchy distribution membership function, the ensemble ranking, shown in the first row of Table 8, is as follows: (1) heat pump (air to water), (2) solar heating, (3) district heating (direct), (4) heat pump (ground source), (5) heat pump (air to water, low-price product), (6) district heating (indirect), (7) heat pump (air-to-air), (8) gas boiler, (9) oil boiler, (10) heat pump (gas-hybrid), (11) biomass boiler (manual), (12) biomass boiler (auto), and (13) woodstove. In order to validate the robustness of the ranking result, sensitive analysis of the possible influencing factors, which are the high variance weight and fuzzy parameter setting, is needed.…”

Section: Ensemble Resultsmentioning

confidence: 99%

“…Energy sources are a major factor impacting the environment [10]; they are divided into fossil fuels, including oil, gas and coal, and renewables, including biomass, solar, geothermal, air, water, and waste [9]. Besides the traditional single energy source, research for combinations of multiple energy sources has increased, such as hybrid source heat pumps [11] and district heating [12]. Each category has developed heating technology, including fireplaces, stoves, boilers, heaters, heat pumps, solar thermal collectors, and cogeneration.…”

Section: Motivationmentioning

confidence: 99%

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Fuzzy Ensemble of Multi-Criteria Decision Making Methods for Heating Energy Transition in Danish Households

Wen

Yan

et al. 2021

Mathematics

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More than 110 countries, including 500 cities worldwide, have set the goal of reaching carbon neutrality. Heating contributes to most of the residential energy consumption and carbon emissions. The green energy transition of fossil-based heating systems is needed to reach the emission goals. However, heating systems vary in energy source, heating technology, equipment location, and these complexities make it challenging for households to compare heating systems and make decisions. Hence, a decision support tool that provides a generalized ranking of individual heating alternatives is proposed for households as decision makers to identify the optimal choice. This paper presents an analysis of 13 heating alternatives and 19 quantitative criteria in technological, environmental, and financial aspects, combines ideal solution-based multi-criteria decision making with 6 weighting methods and 4 normalization methods, and introduces ensemble learning with a fuzzy membership function derived from Cauchy distribution to finalize the ultimate ranking. The robustness of the proposed method is verified by three sensitive analyses from different aspects. Air-to-water heat pump, solar heating and direct district heating are the top three rankings in the final result under Danish national average data. A framework is designed to guide decision makers to apply this ranking guideline with their practical, feasible situations.

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Section: Ensemble Resultsmentioning

confidence: 99%

Section: Motivationmentioning

confidence: 99%

Fuzzy Ensemble of Multi-Criteria Decision Making Methods for Heating Energy Transition in Danish Households

Wen

Yan

et al. 2021

Mathematics

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show abstract

“…The framework is designed to identify optimized system configurations that maximize the integrated exploitation of different thermal sources. The annual performances of three typical applications of hybrid source heat pump (HSHP) systems are simulated and compared with conventional single heat source pump systems [30]. The results show that HSHP systems have the potential to achieve yearround energy-efficient operation and adapt to different building demands in various climatic conditions.…”

Section: Introductionmentioning

confidence: 99%

Performance Study of a Hybrid Solar-Assisted Ground-Source Heat Pump System Used for Building Heating and Hot Water Demands

2023

jjmie

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This paper highlights a study for examining the viability and performance of a solar-assisted ground-coupled heat pump (SAGCHP) to meet domestic hot water and heating needs of a typical low-energy residential building covering a total floor area of 100 m 2 under Batna, Algeria, weather conditions. In this study, four different solar-assisted ground source heat pump combinations have been developed and will be simulated numerically using the simulation program TRNSYS. It turned out that a geothermal heat pump system of 7.7 kW, combined with flat solar thermal collectors, is an alternative promoter to achieve the objective of this study. The extreme annual average values of the heat pump coefficient of performance (COP) obtained are 3.48 and 4.55. In the system, with recharging the borehole, the net energy extracted from the ground is decreased by 30.4% compared to the reference case (GSHP). This can reduce the ground thermal imbalance problem.

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“…Energy sources are the major factor impacting the environment [10], which can be divided as fossil fuels including oil, gas and coal, and renewables including biomass, solar, geothermal, air, water and waste [9]. Apart from the traditional single energy source, research for combinations of multiple energy sources is increasing, like hybrid source heat pumps [11] and district heating [12]. Heat technology has been developed in each category, including fireplace, stove, boiler, heater, heat pump, solar thermal collector and cogeneration.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Ensemble Ideal Solution Based Multi-Criteria Decision-Making Support for Heat Energy Transition in Danish Households

Wen¹,

Yan²,

Qu³

et al. 2021

Preprint

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More than 110 countries including 500 cities worldwide have set the goal of reaching carbon neutrality. Heating contributes to most of the residential energy consumption and carbon emissions. The green energy transition of fossil-based heating systems is needed to reach the emission goals. However, the heating systems vary in energy source, heating technology, equipment location, and these complexities make it challenging for households to compare heating systems and make decisions. Hence, a decision support tool that provides a generalized ranking of individual heating alternatives is proposed for households as decision-makers to identify the optimal choice. This paper presents an analysis of 13 heating alternatives and 19 quantitative criteria in technological, environmental, and financial aspects, combines ideal solution based Multi-Criteria Decision Making with 6 weighting methods and 4 normalization methods, and introduces ensemble learning with a fuzzy membership function derived from Cauchy distribution to finalize the final ranking. The robustness of the proposed method is verified by 3 sensitive analyses from different aspects. Air to water heat pump, solar heating and direct district heating are the top three rankings in the final result under Danish national average data. A framework is designed to guide the decision-makers apply this ranking guideline with their practical feasible situations.

show abstract

Combination principle of hybrid sources and three typical types of hybrid source heat pumps for year-round efficient operation

Cited by 23 publications

References 36 publications

Fuzzy Ensemble of Multi-Criteria Decision Making Methods for Heating Energy Transition in Danish Households

Fuzzy Ensemble of Multi-Criteria Decision Making Methods for Heating Energy Transition in Danish Households

Performance Study of a Hybrid Solar-Assisted Ground-Source Heat Pump System Used for Building Heating and Hot Water Demands

Fuzzy Ensemble Ideal Solution Based Multi-Criteria Decision-Making Support for Heat Energy Transition in Danish Households

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