Some rules to reduce energy for houses II

4. Provide shelter from wind and rain:

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Wind and rain reduce the temperature of the building envelope, leading to the need for additional energy to heat the interior in cool climates and seasons. Roof overhangs can provide protection from rain. Windbreaks can take a number of forms, all of which can become architectural devices in a design:

  • Trees
  • Hedges
  • Fences
  • Garden walls
  • Courtyards

5. Built form can be used for wind protection:

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Surrounding buildings and walls can be effectively employed as windbreaks. Unlike many large modern cities, medieval town plans and those of mountain villages that are subject to extreme winds do not have a regular grid of streets through which wind has unobstructed access. The direct passage of the wind is impeded by using build form as a barrier.

6. A western tree belt can provide shade from the late afternoon sun

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A carefully positioned tree belt on the western boundaries of a building can give protection from the significant heat of the late-afternoon summer sun. Care needs to be taken to ensure that the winter sun`s beneficial heat is not also blocked if working in temperate and cold climate zones. An eastern tree belt will also be beneficial in hot climates, where the morning sun is a powerful force.

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