Thursday, November 4, 2010

Suggest ways in which heat that flows in or out of the house can be minimized.

There are many different ways in which we can prevent transfer of heat across the interior of a house and its environment. All these methods aim to increase the insulation effect offered by walls, roof, doors and windows of the house.


Conduction of heat through walls can be reduced by making the wall thick, making them with material with high thermal insulation properties, or lining them with insulation material. It is also possible to increase thermal insulation effect by making leaving some hollow space within the wall or between wall and the insulating material.


Roofs can be made provide better insulation in the same way as walls. One specific mathod of providing better insulation is to use falce ceilings.


Doors and windows can also be made thicker and of better insulating material. Wherever glazed windows or other glazed structures are used, thermal insulation can be increased by using double walled glass.


It is possible to reduce extreme variations in temperatures parts of house by constructing underground chambers. These remain comparatively cool in summer, and warm in winters.


In addition to above methods, which are based on structural design of house, keeping the doors and windows closed also helps to prevent heat transfer.


Also if the objective is to prevent heating entering the house, rather than prevent both ways conduction of heat, additional measures can be adopted to prevent the effect of radiation heat. Some of these measures include, using light colour exterior paints, using blinds on windows, using reflecting glass and providing a net shade above the roof that reduces radiation reaching the roof, with minimum restriction of air circulation for cooling.

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