An approximate method for calculating laminar natural convective motion in a trombe-wall channel

Chaturvedi, Sushil K.; Mohieldin, T.

doi:10.1016/0360-5442(94)90065-5

Cited by 18 publications

(7 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, due to the different absorptivity of elements with and without photovoltaic cells, the temperatures of elements with and without photovoltaic cells are quite different, hence the temperature distribution of PV glazing can be considered as two dimensional, in vertical direction and horizontal direction. This is quite different from References [16][17][18] in which the temperature distribution of glazing is considered as one dimensional, in vertical direction. For the simplification of calculation, the temperature of every small square photovoltaic cell can be considered uniform.…”

Section: The Theoretical Analysis In Zonementioning

confidence: 94%

An experimental and mathematical study of efforts of a novel photovoltaic-Trombe wall on a test room

Bin

Hua

et al. 2008

Int. J. Energy Res.

View full text Add to dashboard Cite

SUMMARYA novel photovoltaic-Trombe wall (PV-TW) is proposed and investigated experimentally and theoretically in this paper. The PV-TW was installed at the south-facing external wall of an environmental chamber that carried two identical test rooms. Both of the test rooms have a double window of the same size. One test room was installed with the PV-TW (known as the PV-TW room), and the other without PV-TW (known as the reference room). The influence of the PV-TW on the thermal environment of the test room was investigated under different operating conditions. The experimental results show the dual benefits of the PV-TW system: improving the room thermal condition and at the same time generating electricity. Compared with the reference room, the maximum indoor temperature was found to be 5278C higher in winter, and the daily electrical output reached about 0.3 kWh with a PV cell area of 0:72 m 2 : Also, a detailed model is given to evaluate the performance of PV-TW theoretically, and the PV-TW room is simulated under one certain operating condition. The simulated and measured air temperatures of PV-TW room are found to be in good agreement.

show abstract

Section: The Theoretical Analysis In Zonementioning

confidence: 94%

An experimental and mathematical study of efforts of a novel photovoltaic-Trombe wall on a test room

Bin

Hua

et al. 2008

Int. J. Energy Res.

View full text Add to dashboard Cite

show abstract

“…The fluid temperature distributions and flow patterns were examined. Chen et al 16 applied shading elements on the air gap in a building in Dalian in order to increase the thermal performance of the Trombe wall. They examined the temperature change during the night time in winter.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance of a passive test room with a Trombe wall in Tunisia

Dimassi

Dehmani

2012

Journal of Renewable and Sustainable Energy

View full text Add to dashboard Cite

A great amount of energy consumption occurs in buildings due to indoor heating, cooling, ventilation, and lighting. Among these, the energy consumed for heating in buildings has the biggest proportion of consumption. So, the use of renewable sources of energy such as solar energy is the ideal solution to reduce the energy bill. In this context, proper structure elements and architecture need to be considered for the utilization of solar energy in passive ways and for decreasing energy losses to a great extent. The Trombe wall is an excellent passive solar system which relies on natural driving forces and on storing energy. This paper reports on an experimental investigation of a test room containing a Trombe wall in Borj Cedria Tunisia and compares the wall performance for different periods of the year (autumn, winter, and spring). In this study, the phenomenon of natural convection has been highlighted with accuracy measurement and the thermal behavior of the wall was also investigated. In consequence of the experimental study, the convective and the conductive flux were quantified and the thermal efficiency of the wall during the studied periods was estimated. From the comparison of results, the best efficiency of the wall equal to 45% was obtained in the winter period. The operating efficiency is also good in autumn period and the wall offers a good potential of heating. V C 2012 American Institute of Physics.

show abstract

“…Over the years, various studies have been carried out to analyse the Trombe wall performance. New concepts depending on the massive wall materials [13][14][15][16][17][18][19], the glazing type [10,[20][21][22], the ventilation openings type [23][24][25][26][27] and the use of thermal insulation emerged [28,29]. The ventilation system has a fundamental role in the Trombe wall thermal behaviour taking into account the additional heat flux that will occur through the ventilation openings.…”

Section: Introductionmentioning

confidence: 99%

An experimental analysis of the Trombe wall temperature fluctuations for high range climate conditions: Influence of ventilation openings and shading devices

Briga-Sá

Boaventura‐Cunha

Lanzinha

et al. 2017

Energy and Buildings

View full text Add to dashboard Cite

a b s t r a c tDespite the studies already developed about Trombe walls, more research work is needed to contribute to the knowledge about their behaviour and optimize it according to the specific characteristics of each climatic region. The ventilation openings and the shading device operation decisively influence the temperatures fluctuation along the system and that impact should be discussed.In this context, a test cell with a classical Trombe wall was submitted to real climatic conditions in a Portuguese city. The effect of ventilation openings and shading devices in the temperatures fluctuation was analysed.The temperatures in the air layer and along the massive wall presented a similar oscillation pattern and exceeded 60 • C without ventilation and shading devices. For this configuration, temperature values at the top of the air layer were always higher than those obtained at the base and a differential of 19 • C was achieved.The temperature fluctuation across the massive wall was not proportional to its thickness due to its heat storage capacity. When the ventilation system was closed and the shading device was not activated, the temperature inside the test cell exceeded the outside temperature value in 9 • C, showing the system ability to store and release heat.

show abstract

An approximate method for calculating laminar natural convective motion in a trombe-wall channel

Cited by 18 publications

References 16 publications

An experimental and mathematical study of efforts of a novel photovoltaic-Trombe wall on a test room

An experimental and mathematical study of efforts of a novel photovoltaic-Trombe wall on a test room

Thermal performance of a passive test room with a Trombe wall in Tunisia

An experimental analysis of the Trombe wall temperature fluctuations for high range climate conditions: Influence of ventilation openings and shading devices

Contact Info

Product

Resources

About