Energetic and exergetic aspects of solar air heating (solar collector) systems

Öztop, Hakan F.; Bayrak, Fatih; Hepbaşlı, Arif

doi:10.1016/j.rser.2012.12.019

Cited by 99 publications

(35 citation statements)

References 141 publications

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“…A review of solar air heaters including their energetic and exergetic performance has been performed by Oztop et al [12]. The principle of a thermoelectric solar air collector (TESAC) is simple.…”

Section: Flat-plate Collectorsmentioning

confidence: 99%

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Exergy analysis on solar thermal systems: A better understanding of their sustainability

et al. 2016

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a b s t r a c tThis paper presents a review of exergy analysis of solar thermal systems. It includes both various types of solar collectors and various applications of solar thermal systems. As solar collectors are an important technology when sustainability is considered, exergy analysis, which gives a more representative performance evaluation, is a valuable method to evaluate and compare possible configurations of these systems. It should be noted that this review is based on literature published in the last two years.

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Section: Flat-plate Collectorsmentioning

confidence: 99%

“…Equation (12) is a particular case of the more general Eq. (13) since it is valid only for hemispherical radiation sources (f ¼ 1).…”

Section: Introductionmentioning

confidence: 99%

Exergy analysis on solar thermal systems: A better understanding of their sustainability

et al. 2016

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“…Whereas the energy efficiency does not consider this effect (Eqn. (33)) and it leads in higher than thermohydraulic efficiency.…”

Section: Thermohydraulic Efficiencymentioning

confidence: 99%

Comprehensive study on solar air heater with circular and V-type turbulators attached on absorber plate

Rajaseenivasan¹,

Srinivasan²,

Srithar³

2015

Energy

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“…The main disadvantages are, nonetheless, its lower density and lower thermal capacity, as well as its lower heat conductivity [7][8][9]. To overcome this, extensive work is being developed to enhance heat transfer, through different designs of the solar air collector [5,7] and roughness of the absorber in the form of obstacles of different shapes and sizes, like ribs and fins [7,10].…”

Section: Introductionmentioning

confidence: 99%

Alternative for Summer Use of Solar Air Heaters in Existing Buildings

et al. 2017

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Among solar thermal technologies for indoor heating, solar air heaters (SAH) are appealing for implementation on existing buildings due to their simplicity, fewer risks related to the working fluid, and possible independence from the building structure. However, existing research work mainly focuses on winter use and still fails in providing effective solutions for yearly operation, which would enhance their interest. With the aim of analysing an alternative summer use, this work firstly characterises a double channel-single pass solar air collector through experimentation. From the obtained results, modelling and simulation tasks have been conducted to evaluate the possibilities of using hot air, provided by the SAH, while operating under summer conditions within a closed loop, to feed an air-to-water heat exchanger for domestic hot water (DHW) production. The system is studied through simulation under two different configurations for a case study in Valladolid (Spain), during the period from May to September for different airflows in the closed loop. Results show that daily savings can vary from 27% to 85% among the different operating conditions; a configuration where make-up water is fed to the heat exchanger being preferable, with a dedicated water tank for the solar heated water storage of the minimum possible volume. The more favourable results for the harshest months highlight the interest of extending the use of the solar air heaters to the summer period.

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Energetic and exergetic aspects of solar air heating (solar collector) systems

Cited by 99 publications

References 141 publications

Exergy analysis on solar thermal systems: A better understanding of their sustainability

Exergy analysis on solar thermal systems: A better understanding of their sustainability

Comprehensive study on solar air heater with circular and V-type turbulators attached on absorber plate

Alternative for Summer Use of Solar Air Heaters in Existing Buildings

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