International Journal of Energy and Sustainable Development
Articles Information
International Journal of Energy and Sustainable Development, Vol.1, No.1, Dec. 2016, Pub. Date: Aug. 16, 2016
Scaling Effect of the Direct Solar Hot Water Systems on Energy Efficiency
Pages: 1-5 Views: 705 Downloads: 361
Authors
[01] Sowdager Moin Ahmed, Department of Mechanical Engineering, QIS Institute of Technology, Ongole, Andhra Pradesh, India.
[02] Venkata Ramesh Mamilla, Department of Mechanical Engineering, QIS Institute of Technology, Ongole, Andhra Pradesh, India.
[03] G. Lakshmi Narayana Rao, Department of Mechanical Engineering, QIS Institute of Technology, Ongole, Andhra Pradesh, India.
Abstract
Scale formation in risers and headers solar direct water systems is problem in places where hard water is being used. In this paper the effect of scaling on energy efficiency indices such as instantaneous efficiency mass flow rate and overall heat loss coefficient are improved in case of thermosyphon system and forced circulation systems due to pressure gain in the narrow region. Scale mapping is done for the entire solar hot water system for the nature of the scale growth. It is seen in the thermosiphon system the mass flow rate decreased by scaling, this affects increases the energy efficiency more than that of the heat transfer rate. The scaling effect is more predominant in thermosyphon system than the forced circulation system. The difference between mass flow rate in scale and unscaled conditions is less in forced circulation but much higher in thermosyphon system.
Keywords
Scaling Effect, Solar Hot Water Systems, Energy Efficiency
References
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