Performance study of a novel multi-functional Trombe wall with air purification, photovoltaic, heating and ventilation

Wu, Shuang–Ying; Xu, Li; Xiao, Lan

doi:10.1016/j.enconman.2019.112229

Cited by 41 publications

(31 citation statements)

References 49 publications

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“…Because the transparent cover plate is very thin, we can basically confirm that the temperature in the thickness direction, that is, the y-direction, is the same. Affected by the temperature gradient distribution at the height of the air in the interlayer, how the temperature is distributed in the transparent cover plate is the one-dimensional heat transfer in the height direction, i.e., the x-direction; regarding the transparent cover plate, equations ( 1)- (8) show the energy balance equation [24][25][26].…”

Section: Methodsmentioning

confidence: 99%

Experimental Study on Heat Transfer Process Optimization of Heat Storage Wall of the Heat Pump in Tunnel Surrounding Rock in the Cold Region

Yan

et al. 2022

Geofluids

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For tunnels in cold or serious cold areas, the problem of leaking in the spring thawing period is very frequent, which will cause various tunnel diseases due to freezing. By using the surrounding rock geothermal energy in the tunnel project, especially the tunnel project below the permafrost layer, the cold area tunnel heat pump system is able to improve the overall heating energy efficiency as the side temperature regarding the heat pump evaporation increases, that furtherly serves the surrounding supporting building facilities. Inspired by this system and the active and passive coupling building technology, a heat recovery type of heat storage wall model is proposed in this research. By describing the heat transfer process regarding the heat recovery type of heat storage wall and carrying out the experimental research, its feasibility and effectiveness are verified. The results show that when the outdoor ambient temperature in Urumqi is −7~−15°C and the instantaneous total solar radiation reaches the range of 0~1108 W/m2, this kind of wall can create hot wall-near air whose temperature is 11.89°C higher than the ambient temperature for providing a high-quality air heat source for the air source heat pump when the temperature is low, thereby significantly improving the air source heat pump heating system efficiency. Without the photovoltaic and photothermal equipment, the heat recovery type of heat storage wall can make the utilization rate of solar energy reach 13% to 20%, even up to 36%.

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Section: Methodsmentioning

confidence: 99%

Experimental Study on Heat Transfer Process Optimization of Heat Storage Wall of the Heat Pump in Tunnel Surrounding Rock in the Cold Region

Yan

et al. 2022

Geofluids

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“…The low Re k-ε model has been widely used to calculate the turbulent natural convection of the interlayer [47]. The explanations of governing equations are provided in SI.…”

Section: Flow and Heat Transfermentioning

confidence: 99%

Solar-thermal energy conversion prediction of building envelope using thermochemical sorbent based on established reaction kinetics

Luo

Yang

et al. 2022

Energy Conversion and Management

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“…From this study it was noted that the maximum power obtained from PV inside the chimney was 75.1% of the PV power outside. Wu et al [8] studied heating and ventilating performance of PV-Trombe wall with air purgation. The effect of channel dimensions on the thermal and electrical performance and the performance of the PC-PV-Trombe was studied.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance of wax Trombe wall

Salih

Ayaal

2022

J Appl Eng Science

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Using solar energy to cover heating loads of building is a clean and unconventional way that can help reduce electricity consumption. Problems of the cost of energy and environmental pollution are among the most important challenges facing humanity at the present time. And as most of the energy is used for heating and ventilation, thus the need to find renewable sources of energy has become a pressing need. In this direction Trombe wall, which is a classical passive solar wall, has become one of the most important heating and ventilation technologies of buildings. In the present work a three-dimensional numerical study of thermal energy performance for Trombe wall utilizing paraffin wax as PCM was presented. The effect of PCM thickness was studied as (2, 3, 4 and 5 cm). A FORTRAN-90 computer program was built to solve a three-dimensional, turbulent Navier stokes and energy equations in addition to enthalpy transforming method for PCM with explicit scheme based on finite volume method. Numerical results of the present code were validated by comparing them with previous experimental results and a good agreement was noted. The results show that a 2 cm thick PCM is an optimal thickness, where the percentage rates of increasing in air temperature over ambient temperature at day hours (10 am, 12 pm, 5 pm, 10 pm and 7 am of the next day) were (37.8, 19.5, 30.7, 60 and 69.2%) respectively, compared to (33.5, 15.2, 25.9, 53.3 and 65.3) % respectively for a 5 cm wax calculated at the same hours.

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Performance study of a novel multi-functional Trombe wall with air purification, photovoltaic, heating and ventilation

Cited by 41 publications

References 49 publications

Experimental Study on Heat Transfer Process Optimization of Heat Storage Wall of the Heat Pump in Tunnel Surrounding Rock in the Cold Region

Experimental Study on Heat Transfer Process Optimization of Heat Storage Wall of the Heat Pump in Tunnel Surrounding Rock in the Cold Region

Solar-thermal energy conversion prediction of building envelope using thermochemical sorbent based on established reaction kinetics

Thermal performance of wax Trombe wall

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