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A solar energy harvesting facade system.

Number: pap. 724

Author(s) : THAM K. W., SEKHAR C., CHEONG D., et al.

Summary

A computational model solar energy harvesting system (SEHS) system has been developed and validated against field measurements. It is a one dimensional heat flow model which incorporates convective heat losses. The system comprise a rectangular tank, nominally 1 m x 1 m x 0.05 m that is mountable on a vertical façade of a building. The high incident solar radiation on a West facing façade is harnessed by the SEHS system and the absorbed energy drained away as warm water for suitable usage. The wall behind the façade is kept cool, thus reducing the conduction heat gain and the stored heat energy which would otherwise have to be dealt with. It was determined that the SEHS has the following advantages: (i) reducing the surface temperature of the vertical wall, thus reducing this component of the urban heat island effect; (ii) reducing the conduction heat gain, as well as the amount of heat stored in the wall, thus lowering air conditioning requirements and improving thermal comfort indoors; (iii) harnesses solar energy for low temperature applications. The dependency of the energy collection on solar absorptivity, targeted drainage temperature is presented.

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Pages: 9 p.

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Details

  • Original title: A solar energy harvesting facade system.
  • Record ID : 30009629
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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