Direct use of solar energy as heat source for a heat pump in comparison to a conventional parallel solar air heat pump system

Lerch, Werner; Heinz, Andreas; Heimrath, Richard

doi:10.1016/j.enbuild.2015.03.006

Cited by 47 publications

(19 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3(b) shows the schematic diagram of the PCM-SAHP. The system has nine operating modes, including (1) ASHP for space cooling mode (M1), (2) Table 4 shows the refrigerant and water flow directions in the various modes.…”

Section: Pcm-sahpmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study on performance of a solar-air source heat pump system in severe external conditions and switchover of different functions

Shang

et al. 2016

Sustainable Energy Technologies and Assessments

View full text Add to dashboard Cite

Section: Pcm-sahpmentioning

confidence: 99%

“…Over the past two decades, solar-assisted heat pump (SHP) systems have been being widely utilized [1][2][3][4]. Of these, solar-assisted air source heat pump (SAHP) is the most promising system.…”

Section: Solar-assisted Air Source Heat Pumpmentioning

confidence: 99%

Experimental study on performance of a solar-air source heat pump system in severe external conditions and switchover of different functions

Shang

et al. 2016

Sustainable Energy Technologies and Assessments

View full text Add to dashboard Cite

“…A combination of heat pumps with solar technologies, under the Solar Assisted Heat Pump (SAHP) concept, has already been described in previous research initiatives [20][21][22][23][24][25][26], although the available information and the experiences combining both technologies are still too scarce and very focused only on standard solar systems. Therefore, there is an increasing need to better understand the interaction and combination of both concepts-ASTFs and heat pumps-to provide additional knowledge about the promising potential of both systems when working coupled.…”

Section: Introductionmentioning

confidence: 99%

Assessment on the Efficiency of an Active Solar Thermal Facade: Study of the Effect of Dynamic Parameters and Experimental Analysis When Coupled/Uncoupled to a Heat Pump

et al. 2020

View full text Add to dashboard Cite

The building sector presents poor performance in terms of energy efficiency and is looking for effective alternatives aimed at reducing the use of fossil fuels. The facade is a key element able to harness renewable energy as an Active Solar Thermal Facade (ASTF). The main purpose of this study is the assessment of a novel design concept based on a steel sandwich panel technology. The performance of the active system will be first addressed by a parametric study in order to analyze its behavior and secondly, by describing a real case based on an experimental test by connecting the active panels to a heat pump. The study shows the impact of solar irradiation and mass flow on the thermal jump achieved, while ambient and fluid inlet temperatures are the most influencing parameters in the efficiency of the facade. When coupled to the heat pump, results from a measurement campaign demonstrate a remarkable improvement in the performance of the ASTF. The results presented provide significant proof about the benefits of a synergetic combination of both technologies—solar facades and heat pumps—as efficient alternatives for the building sector, aiming to improve energy efficiency as well as reduce their dependence on non-renewable sources.

show abstract

“…According to the coupling mode of the solar collector and evaporator, the SAHP system can be distinguished into direct expansion SAHP (DX‐SAHP) and indirect expansion SAHP (IDX‐SAHP) systems. Morrison et al and Lerch et al found that the DX‐SAHP system has a higher evaporation temperature and a longer collector lifetime than that of the IDX‐SAHP system. Furthermore, the refrigerant of DX‐SAHP system directly flows inside the solar collector, eliminating heat losses from the intermediate heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

A performance comparison of serial and parallel solar‐assisted heat pump heating systems in Xi'an, China

Huan

Wang

et al. 2019

Energy Science & Engineering

View full text Add to dashboard Cite

In this study, a TRNSYS model for a solar‐assisted heat pump (SAHP) water heating system for a university bathroom in Xi'an was developed and validated through experimental measurements. Under the typical meteorological conditions in Xi'an, a comparative analysis of the performance of the serial indirect expansion SAHP (IDX‐SAHP) system and the parallel IDX‐SAHP system during different seasons was conducted using the validated model. The results demonstrated that for annual operation, the parallel IDX‐SAHP system showed better performance in the Xi'an district compared to the serial system. Under the same heating load, the average coefficient of performance (COP) of the serial IDX‐SAHP system was 3.23 and that of the parallel IDX‐SAHP system was 4.34. In particular, during summer and the transition season, the parallel IDX‐SAHP system showed large advantages, mainly owing to a larger part of the heating load being provided by the solar collector. However, the serial IDX‐SAHP system showed a higher efficiency than that of the parallel IDX‐SAHP system during winter conditions.

show abstract

Direct use of solar energy as heat source for a heat pump in comparison to a conventional parallel solar air heat pump system

Cited by 47 publications

References 1 publication

Experimental study on performance of a solar-air source heat pump system in severe external conditions and switchover of different functions

Experimental study on performance of a solar-air source heat pump system in severe external conditions and switchover of different functions

Assessment on the Efficiency of an Active Solar Thermal Facade: Study of the Effect of Dynamic Parameters and Experimental Analysis When Coupled/Uncoupled to a Heat Pump

A performance comparison of serial and parallel solar‐assisted heat pump heating systems in Xi'an, China

Contact Info

Product

Resources

About