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Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/1254
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| Title: | Passive Cooling of Buildings |
| Authors: | Jain, H K
Bhargava, P K
Lal, Shiv |
| Keywords: | Temperature
Humidity
Comfort
Cooling
Evaporative cooling
Passive features |
| Issue Date: | 28-Dec-2012 |
| Abstract: | The external climate (temperature, radiation, humidity, and wind) determines the heating and cooling requirements of a building. Increased cooling load due to solar gain is generally the main problem being faced by designers, but this can usually be taken care of by good innovative design. Besides shading of windows from direct sun, especially on the east and west facades, protection from diffused sunlight and reflected sunlight is also important. Solar heat ingress through walls and roof can be reduced by using white or light colours, selective paints etc on the exterior and by providing appropriate insulation. Shading by vegetation is particularly effective because it also reduces heat island effect and the surrounding air is cooled by transpiration. Several natural systems of creating an indoor heat sink by cooling the structure by night sky radiation or by evaporation of water can be used to cool buildings with negligible energy consumption. These cooling systems will be briefly described in relation to their applicability in different climates.
Paper describes a variety of natural cooling techniques and various options available for low energy cooling of buildings like natural ventilation, evaporative cooling, thermal mass, nocturnal ventilation, phase change materials, or mechanical air conditioning etc. Salient features of various studies on passive cooling techniques are discussed in this paper. |
| Description: | National Conference Emerging trends of energy conservation in buildings Nov.01-03, 2012
CSIR-Central Building Research Institute Roorkee-247667, Uttrakhand, India. |
| URI: | http://hdl.handle.net/123456789/1254 |
| Appears in Collections: | Published Articles
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