Performance Study of Solar Air Heater with Baffled Duct

Maheshwari, B. K.

doi:10.9790/1684-0455256

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…Further enhancement can expand into flow redirection method where air in-flow in the solar air collector is diversified by means of diversion of air flow path [18]. Absorber designs with significant [10,11,13,15]. With more advanced and complex design of absorbers, the cost of fabrication and manufacturing would also increase [19].…”

Section: Design Of Different Types Of Matrixmentioning

confidence: 99%

“…Variations have been made by many researchers in terms of air flow redirection methods specified above with the objective to optimize the designs and to increase the performance of solar air collector [5,10,12 ].The permeable of solar air collector permeable absorber can be categorized into many types which are V Groove, baffled fin, matrix and aluminum cans etc. [10,12,13,15]. The types of permeable absorbers as listed above differ in their operational configuration, and vary in terms of absorber topology, arrangement and material used for the absorber.…”

Section: Design Of Different Types Of Matrixmentioning

confidence: 99%

“…Radiative losses from the absorber can be minimized by applying selective coating on the absorber. Adding flow obstructions such as fins and baffles in the collector increases the surface contact area and may induce higher turbulence in air flow, yet but with such method, an increase of pressure drop is expected which leads to loss of efficiency [9,13,14]. Performance and Cost Aspect of Double Pass V Groove Absorber with and without Porous Media are viewed [21].…”

Section: Design Of Different Types Of Matrixmentioning

confidence: 99%

“…By using porous packing material in the duct of solar air heater is one of the methods to improve the thermal efficiency [10]. The double-duct flow mode of solar air heater has the advantage of reducing the heat losses and provides improvement in thermal efficiency with marginally increasing the heater size or cost [13]. A number of analytical and experimental studies have been carried out with packed bed, fins integrated double pass solar air heater which shows significant increase of the performance compared to the conventional system [12].…”

Section: Introductionmentioning

confidence: 99%

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Review on Experimental analysis of Matrix Absorber Designs for Solar Air Heater

Thakre¹,

Singh²,

Verma³

2017

IJTSRD

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Solar energy is important source of renewable energy. This energy are used in solar air heater. Solar air heater is one of the valuable heat sources with varie of applications such as space heating, industrial process heating and drying of fruits and vegetables etc. The thermal efficiency of a conventional solar air heater (SAH) can be improved by reducing the losses from the collector surface by using proper and increasing the convective coefficient between heat collecting surface and working fluid by increasing the heat transfer area which can be increased by double pass design. Some experimental and theoretical investigations have been considered enhance the performance of double pass solar air heaters (DPSAHs) provided with performance enhancement techniques i.e. using packed bed materials (PBMs), extended surfaces like fins, and corrugated/grooved absorbing surfaces. The objective of present study is to review the various investigations conducted on performance enhancement of solar air heater. Based on the review, it is found that the most of the investigations were performed on double pass system having PBM and integrated with extended surfaces. Thermal efficiency of double pass solar air heater with porous media is higher than single pass and double pass solar air heater without porous media.

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Section: Design Of Different Types Of Matrixmentioning

confidence: 99%

Section: Design Of Different Types Of Matrixmentioning

confidence: 99%

Section: Design Of Different Types Of Matrixmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Review on Experimental analysis of Matrix Absorber Designs for Solar Air Heater

Thakre¹,

Singh²,

Verma³

2017

IJTSRD

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“…The common practice in predicting performance of solar energy system is to solve a set of several inter-related [27]. The convective heat transfer coefficient, h (absorber plate to flowing air) is an important parameter required for mathematical modeling, computer simulation and performance prediction [26]. Many researchers, while predicting the performance of solar dryers systems, are constrained to utilize convective heat transfer correlations published for standard geometries of system and specific test conditions [28,29].…”

Section: Introductionmentioning

confidence: 99%

A Review on Experimental Analysis of Double Pass Solar Air Heater With Baffled Absorber Plate

Singh¹,

Singh²,

Verma³

2017

IJTSRD

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This review paper based on the study of different type of solar air heater with baffled fin and without using baffle fin. It has been observed that the thermal efficiency of baffled duct type solar air heater is higher than smooth duct solar air heater. thermal performance advantage in wide range of air flow rate. The heat transfer coefficient between the absorber plate and air can be considerably increased by using artificial roughness on the bottom plate under the absorber plate of a solar air heater duct. Study and analysis of roughness and operating parameters on heat transfer. The study has covered the range of Reynolds number Re depending on types of the configuration of the solar collectors. Base values of Nusselt number Nu have been determined for different values of configurations and operating parameters. To determine the increase in heat transfer and increment in thermal performance, the values of Nusselt have been compared with those duct and baffled fin under similar flow conditions. The enhancement is attributed to the heat transfer increases due to the perforated baffles on the absorber plate and reduction in the mean absorber plate temperature.

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