7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

Adaptation of roof ventilators as micro-power generation units in homes

8 Jul 2014, 17:10
1h 50m
D Ring ground level

D Ring ground level

Board: F.437
Poster Presentation Track F - Applied Physics Poster1


Mr Terrence Manyeredzi (University of Fort Hare)

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

Ventilation is one of the aspects that determine quality of the indoor environment. Traditionally residential construction greatly relied on air infiltration through the building envelope. More ventilation than necessary is normally expensive in terms of energy. The incorporation of energy efficiency measures can drastically reduce energy consumption without compromising thermal performance of the building. In most cases the use of natural ventilation is not adequate so the need of mechanical ventilation. The incorporation of a power generation roof ventilator (PGRV) is a promising solution in meeting the energy needs and maintaining a thermally comfortable indoor environment. Literature shows that researchers do appreciate that power can be generated from a roof ventilator at negligible performance degradation in terms of ventilation. However, the researches fall short of detailing whether performance degradation is uniform for all modes of operation or it is a variable in itself thereby calling for intensive studies on characterising performance degradation of the roof ventilator. A voltage generator added to the rotating ventilator is an additional load to the rotating component that reduces its rotational capabilities. That reduction in rotational capability therefore translates to reduced ventilation efficiency since both power output and ventilation depend on the size of the centrifugal force on the ventilator. The paper gives a critical review of the work done to date by different researchers on power generator roof ventilators and identifies areas of research that need more attention.

Main supervisor (name and email)<br>and his / her institution

Dr. G. Makaka gmakaka@ufh.ac.za

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?


Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?


Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?


Primary author

Mr Terrence Manyeredzi (University of Fort Hare)


Dr Golden Makaka (University of Fort Hare)

Presentation Materials

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