Design and performance of a roof integrated solar air heater

Peck, M. K.; Proctor, D.

doi:10.1016/0038-092x(83)90080-4

“…The ground-based system is particularly suitable for applications involving large area collection/storage of solar energy. The system involving the concrete collector may be integrated in building roof (Spencer and Strud, 1979;Peck and Proctor, 1983).…”

Section: Introductionmentioning

confidence: 99%

Finite time thermal analysis of ground integrated-collector-storage solar water heater with transparent insulation cover

Reddy¹,

Avanti²,

Kaushika³

1999

Int. J. Energy Res.

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A transparent honeycomb insulated ground integrated‐collector‐storage system has been investigated for the engineering design and solar thermal performance. The system consists of a network of pipes embedded in a concrete slab whose surface is blackened and covered with transparent insulation materials (TIM) and the bottom is insulated by the ground. Heat may be retrieved by the flow of fluid through the pipe. A simulation model has been developed; it involves the solution of the two‐dimensional transient heat conduction equation using an explicit finite‐difference scheme. Computational results have been used to determine the effect of such governing parameters as depth as well as pitch of the pipe network and collector material on the thermal performance of the system. The pipe network depth of 10 cm and the TIM cover made of 5 cm compounded honeycomb seem suitable for the proposed system. Solar gain (solar collection efficiency of 30–50% corresponding to collection temperature of 40–60°C) and the diurnal heat storage characteristics of the system are found to be of the right order of magnitude for solar water heating applications. Copyright © 1999 John Wiley & Sons, Ltd.

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“…The system involving the concrete collector may be integrated in building roof (Spencer and Strud, 1979;Peck and Proctor, 1983). Several designs of solar ICS water heating systems have been fabricated and investigated but the con"gurations which use such low-energy material as ground, concrete and sand for collection and storage have an obvious advantage of low cost.…”

Section: Introductionmentioning

confidence: 99%

Finite time thermal analysis of ground integrated‐collector‐storage solar water heater with transparent insulation cover

Reddy

¹

,

Avanti

²

,

Kaushika

³

1999

Int. J. Energy Res.

1

0

View full text Add to dashboard Cite

A transparent honeycomb insulated ground integrated‐collector‐storage system has been investigated for the engineering design and solar thermal performance. The system consists of a network of pipes embedded in a concrete slab whose surface is blackened and covered with transparent insulation materials (TIM) and the bottom is insulated by the ground. Heat may be retrieved by the flow of fluid through the pipe. A simulation model has been developed; it involves the solution of the two‐dimensional transient heat conduction equation using an explicit finite‐difference scheme. Computational results have been used to determine the effect of such governing parameters as depth as well as pitch of the pipe network and collector material on the thermal performance of the system. The pipe network depth of 10 cm and the TIM cover made of 5 cm compounded honeycomb seem suitable for the proposed system. Solar gain (solar collection efficiency of 30–50% corresponding to collection temperature of 40–60°C) and the diurnal heat storage characteristics of the system are found to be of the right order of magnitude for solar water heating applications. Copyright © 1999 John Wiley & Sons, Ltd.

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“…It occurs in all fibrous insulation on equipment and in buildings due to intermittent and variable use. The current work arose from the need to know how natural convection within an underfloor rockbed would influence the performance of a solar space heating system (Peck and Proctor, 1983;Salt, 1985;Woodridge and Welch, 1980). The rockbed thermal energy store is located beneath and in good thermal contact with a concrete slab floor.…”

Section: Introductionmentioning

confidence: 99%

The influence of natural convection on the temperature decay of a porous thermal layer

Salt

¹

,

Mahoney

²

1988

Transp Porous Med

1

0

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Temperature decay in sealed rockbeds has been recorded. The rockbeds lost energy through the top surface and the results indicated that different natural convective flows occurred in beds of fixed depth and rock size but different lateral dimensions. However, the different flows had no effect on the mean power density dissipated through the top of the beds. A simple numerical conduction model based on the 'power integral method' was used to calculate the temperature decay. The experimental results suggested that an insulated porous lower boundary was appropriate for the model and this gave the best agreement with the experiments.

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Design and performance of a roof integrated solar air heater

Cited by 16 publications

References 3 publications

Finite time thermal analysis of ground integrated-collector-storage solar water heater with transparent insulation cover

Finite time thermal analysis of ground integrated-collector-storage solar water heater with transparent insulation cover

Finite time thermal analysis of ground integrated‐collector‐storage solar water heater with transparent insulation cover

The influence of natural convection on the temperature decay of a porous thermal layer

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