Performance Analysis of a Combined Solar-Assisted Heat Pump Heating System in Xi’an, China

Huan, Chao; Li, Shengteng; Wang, Fenghao; Zhao, Yujiao; Wang, Zhihua; Tao, Pengfei

doi:10.3390/en12132515

Cited by 15 publications

(5 citation statements)

References 53 publications

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“…In Huan et al, [ 95 ] focus is devoted on the optimal strategy to be used in dual‐source heat pumps. The results from an experimental campaign indicate that the operation in serial or parallel mode is strongly influenced by ambient temperature and solar radiation within the same day and therefore there is the need to switch operating mode not only on seasonal basis but also within the same day.…”

Section: Solar‐coupled Vapor‐compression Heat Pumps For Space Heating...mentioning

confidence: 99%

Analysis of the Potential of Solar‐Assisted Heat Pumps: Technical, Market, and Social Acceptance Aspects

2022

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Solar‐assisted heat pumps have the potential to increase the share of renewables in the energy systems for several cases, or to increase the flexibility of smart grids and integrated thermal‐electric grids. The development of such systems requires a comprehensive approach in which technical, market, and social acceptance are all tackled at the same time. Such a holistic approach is the main objective of the present review article. To do so, an investigation is performed by categorizing the integration approaches reported in the literature, exploiting the solar source either as a low‐temperature evaporator source or as supporting the condenser during heating operation. Furthermore, hybrid integration schematics and dual‐source approaches are discussed. Market and social aspects complete the analysis, with the aim of finally identifying the current status; the main drivers and challenges are also addressed. The reported results confirm that the exploitation of solar thermal energy can increase the achievable performance of heat pumps in a broad range of climates. A favorable regulatory/financial framework and informative campaigns for businesspersons and the wide public have been identified as the main solutions to maximize the deployment of the technology in the coming years.

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Section: Solar‐coupled Vapor‐compression Heat Pumps For Space Heating...mentioning

confidence: 99%

Analysis of the Potential of Solar‐Assisted Heat Pumps: Technical, Market, and Social Acceptance Aspects

2022

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“…The results show that the average COP and exergetic COP are 6.14 and 1.49, respectively. Huan et al [11] proposed a hybrid system of solar heat pump that can work in series or parallel mode. The performance of the proposed system implemented in a university bathroom in Xi'an region.…”

Section: Introductionmentioning

confidence: 99%

Dynamic simulation of the performance of a solar assisted heat pump in different climates

Alipour,

Karami,

Heidarnejad

2024

IJONFEST

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One method to reduce energy consumption in buildings is using solar-assisted heat pumps, in which the combination of heat pump and solar collector is used to improve the thermal performance. In this paper, TRNSYS and EES software are used to simulate the performance of an indirect expansion solar-assisted heat pump. Dynamic simulation of the system is performed by changing parameters such as the mass flow rate of the collector working fluid and the collector area in five climates including Hot/Dry, Cold/Dry, Moderate/Humid, Hot/semi-Humid, and Hot/Humid. The results show that, in January, the Cold/Dry climate had the lowest free energy ratio (FER) because of the high space heating load. In this month, the Hot/semi-Humid climate has the highest FER, because of the higher solar radiation and no need for space heating. The annual FER in the Hot/Dry zone is 71% which is higher than that of other zones. The lowest FER is related to Moderate/Humid climate due to high humidity and cloudiness.

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“…In Huan, et al [15], a combined solar heat supply system with sequential and parallel modes was developed, and the results showed that in winter it is better to use a sequential mode, and in summer the parallel one is suitable. In the article Kong, et al [16], a numerical simulation of the solar heat supply system was developed, which confirmed the effectiveness of the system in freezing conditions.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the parameters of a flat solar collector with a tubular collector to ensure energy flexibility in smart buildings

Kunelbayev,

Mansurova,

Tyulepberdinova

et al. 2024

ijirss

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This study examines the application and implementation of energy-efficient measures and strategies for use in buildings aimed at achieving the goal of virtually zero energy consumption by buildings. In particular, the aim of the study is to introduce integrated solar devices into the building, functioning as a functional component of the structure for heat storage, in order to increase the flexibility of the structure while maintaining comfortable conditions inside. This article discusses an experimental comparison of flat and tubular solar collectors in the southern and northern regions of Kazakhstan. Compared to glass (S = 3), a tubular solar collector has a coefficient of thermal conductivity that is two times lower for single-layer elements and 2.5 times lower for double-layer elements. This means that less heat is lost. A flat solar collector was also developed, a heat-insulating translucent double-glazed window with reduced pressure, and the coolant is made of thin-walled corrugated stainless-steel pipe. In this collector, there is a constant circulation of heat, which increases the efficiency of heat transfer by eliminating additional partitions between the panel and thermal insulation. A calculation was carried out that allowed us to determine the productivity and useful gain for two collectors. The annual increase in the useful energy of flat solar collectors is about 12780000 kJ/hour and 20100000 kJ/hour for tubular solar collectors; therefore, the annual increase in the useful energy of evacuated tubular collectors is 20% more than that of flat plate collectors in the northern region.

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Performance Analysis of a Combined Solar-Assisted Heat Pump Heating System in Xi’an, China

Cited by 15 publications

References 53 publications

Analysis of the Potential of Solar‐Assisted Heat Pumps: Technical, Market, and Social Acceptance Aspects

Analysis of the Potential of Solar‐Assisted Heat Pumps: Technical, Market, and Social Acceptance Aspects

Dynamic simulation of the performance of a solar assisted heat pump in different climates

Comparison of the parameters of a flat solar collector with a tubular collector to ensure energy flexibility in smart buildings

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