Experimental studies coupled by Computational Fluid Dynamic (CFD) findings for the of Heat Transfer enhancement in Flat Plate Solar Water Collectors

Iordanou, G.; Apostolidou, E.

doi:10.9790/1684-11335057

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…The energy losses through the upper surface by convection between parallel plates and the radiation across them as in the study of Iordanou [12]. Then, the coefficient of heat losses from the upper surface can be formulated as…”

Section: Collector Heat Lossesmentioning

confidence: 99%

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Experimental Investigation of Thermal Performance for Innovative Spiral Solar Collector

Al-hadithi¹,

Jalil²,

Abdulghafour³

2023

IJHT

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This work studies the thermal performance of a novel Spiral Solar Collector SSC experimentally with a mass flow rate ranged from 0.078 to 0.025 kg/s in an open system. A spiral-shaped tube of 13.5 m length, 0.01434 m diameter. The spiral shape is formed from six turns with an 11 cm gap distance between each spiral turn that is attached to an absorber plate. A new black paint mixed with a red sand powder is used to paint the mild steel absorber plate. The experiments are carried out in Al Ramadi city-Iraq under clear weather conditions during January and March 2022. Under different mass flow rates, two fluid flow cases are tested in the experiments; open system and close system cases. The proposed SSC represents a new alternative design that has a noticeable effect on thermal efficiency and outlet temperature. The results showed that there is an increase in the fluid outlet temperature with decreasing the mass flow rate. The difference between the experimental and theoretical results for the maximum value of the temperature difference is (17 K), which gave (6%) percentage error. It is found that the maximum temperature difference was 15 K in the open system case for a flow rate of 0.025 kg/s. According to the current findings, the thermal efficiency has increased up to 17% compared with other SSC and 27% related to conventional flat plate collectors.

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Section: Collector Heat Lossesmentioning

confidence: 99%

“…The collector plate temperature and water outlet temperature at any time interval can be given as [12] T…”

Section: Ssc Heater Efficiencymentioning

confidence: 99%

Experimental Investigation of Thermal Performance for Innovative Spiral Solar Collector

Al-hadithi¹,

Jalil²,

Abdulghafour³

2023

IJHT

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“…Aluminium Mesh inserted in copper absorber tube[4] Experimental results shows that aluminium mesh inside the collector provide higher convective heat transfer to water as compare to traditional FPC. It is a aluminium mesh inside the channel that distribute heat more rapidly.…”

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confidence: 97%

Experimental investigations on solar flat plate collector by changing geometry of fin using CFD - a review

Badgujar

Nimbulkar

Kulkarni³

2017

IJRET

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Sun is inexhaustible source of energy due to this it is more interesting and reliable in association with energy storage system. Sun radiates 5×10 15 kWh energy per annum, so energy incidents 4-7 kWh per m 2 on an average area depends on location of site. Fins are the extended surface which increase the heat transfer rate. It is most commonly used in heat exchanger device such as car radiator, Computer CPU heat sink and hydrogen fuel cell etc. Fins increase area of heat transfer in cooling and heating application. Lots of experimentation has been done to improve the heat transfer rate of solar water heater by adding fins of helical, rectangle, circular, trapezoidal section as well as twisted shape. In his paper we did experimental investigation on Flat plate collector solar water heater raiser tube with and without fin. Also investigation on Raiser tube with increasing area of contact of fin such as raiser tube with standard fin (90° area of contact), inverted raiser tube with standard fin, raiser tube with modified fin (270° area of contact) and inverted raiser tube with modified fin. As the surface area increase heat transfer from fins also get increases. Comparing the results of these five different fins it is found that by increasing the area of contact between the raiser tube and fin heat transfer get increases. Also inverted raiser tube gives more water output temperature than standard raiser tube. So implementation of fin in solar flat plate collector (FPC) is also most promising techniques that increase the heat transfer rate and increasing area of contact between fin and raiser tube resulting enhancement in water output temperature through raiser tube.

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Experimental and computational analysis of riser tubes of modified simple solar water heater with different twisted inserts

Sunheriya

Dewangan

Thool

2023

Int J Interact Des Manuf

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Experimental studies coupled by Computational Fluid Dynamic (CFD) findings for the of Heat Transfer enhancement in Flat Plate Solar Water Collectors

Cited by 5 publications

References 17 publications

Experimental Investigation of Thermal Performance for Innovative Spiral Solar Collector

Experimental Investigation of Thermal Performance for Innovative Spiral Solar Collector

Experimental investigations on solar flat plate collector by changing geometry of fin using CFD - a review

Experimental and computational analysis of riser tubes of modified simple solar water heater with different twisted inserts

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