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Comfort levels in evaporatively cooled buildings

Organized by School of Mechatronic Engineering (UniMAP) & co-organized by The Institution of Engineering Malaysia (IEM), 11th - 13th October 2009 at Batu Feringhi, Penang, Malaysia.

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Bibliographic Details
Main Authors: Maiya, M.P., Vijay, S.
Format: Working Paper
Language:English
Published: Universiti Malaysia Perlis 2009
Subjects:
Heat > Transmission
Heating
Ventilation
Air conditioning
Cooling towers
Cooling system
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/7190
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spelling my.unimap-71902009-11-17T07:10:44Z Comfort levels in evaporatively cooled buildings Maiya, M.P. Vijay, S. Heat -- Transmission Heating Ventilation Air conditioning Cooling towers Cooling system Organized by School of Mechatronic Engineering (UniMAP) & co-organized by The Institution of Engineering Malaysia (IEM), 11th - 13th October 2009 at Batu Feringhi, Penang, Malaysia. A medium sized office building is modeled for centralised evaporative air cooling together with modified cooling tower, cooling coils, saturation pad and evaporatively cooled roof. The tower exit air is used to pre-cool the tower inlet air thereby reducing the latter's wet bulb temperature. Cooling load of the building is estimated by Cooling Load Temperature Difference – Cooling Load Factor (CLTD – CLF) method with respect to time for various indoor temperatures. Cooling capacity of the evaporative cooling system is also calculated for various indoor temperatures leading to equilibrium indoor temperature for any time. Knowing the latent load on the space and the prevailing ambient conditions, the indoor humidity is predicted. For the assumed activity level, clothing and air velocity, PMV and PPD are estimated. The positive values of PMV the resulting PPD are integrated over the time to get PMV – hours and PPD – hours which give the cumulative dissatisfaction levels for each month. The developed evaporative cooling model is applied for five representative cities in India, namely Ahmedabad, Bangalore, Jodhpur, Nagpur and New Delhi. While for Bangalore (cool and dry) the comfort is achieved throughout the year satisfactorily, discomfort prevailed for few months around July for Jodhpur (hot and dry). The maximum value of discomfort felt is about 50 PMV-Hours in the month of July. For other cities, much less discomfort is felt for shorter duration. The analysis reveals that centralised evaporative air cooling is feasible for human comfort especially in hot and dry climates. Modified cooling tower and roof evaporative cooling further widen its scope to bring the indoor conditions within the extended comfort zone. 2009-11-05T04:47:08Z 2009-11-05T04:47:08Z 2009-10-11 Working Paper p.3E 1 - 3E 7 978-967-5415-07-4 http://hdl.handle.net/123456789/7190 en Proceedings of International Conference on Applications and Design in Mechanical Engineering 2009 (iCADME 2009) Universiti Malaysia Perlis
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Heat -- Transmission
Heating
Ventilation
Air conditioning
Cooling towers
Cooling system
spellingShingle Heat -- Transmission
Heating
Ventilation
Air conditioning
Cooling towers
Cooling system
Maiya, M.P.
Vijay, S.
Comfort levels in evaporatively cooled buildings
description Organized by School of Mechatronic Engineering (UniMAP) & co-organized by The Institution of Engineering Malaysia (IEM), 11th - 13th October 2009 at Batu Feringhi, Penang, Malaysia.
format Working Paper
author Maiya, M.P.
Vijay, S.
author_facet Maiya, M.P.
Vijay, S.
author_sort Maiya, M.P.
title Comfort levels in evaporatively cooled buildings
title_short Comfort levels in evaporatively cooled buildings
title_full Comfort levels in evaporatively cooled buildings
title_fullStr Comfort levels in evaporatively cooled buildings
title_full_unstemmed Comfort levels in evaporatively cooled buildings
title_sort comfort levels in evaporatively cooled buildings
publisher Universiti Malaysia Perlis
publishDate 2009
url http://dspace.unimap.edu.my/xmlui/handle/123456789/7190
_version_ 1643788731979661312
score 13.214268

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