Some rules to reduce energy for houses I

1. The wind break will halve the wind speed and lead to reduced cooling of the building envelope.

A windbreak, or shelter belt, will significantly influence the wind. Locating a building on the leeward side of a well-designed can result in energy savings of 15% to 20% because cooling of the building envelope is reduced. Position the building within 5 times the height of the wind break. Remember you will want to permit, not block, the passage of breezes in tropical regions.

2. The presence of water is a free source of cooling:


A body of water, such as a lake or the sea, will influence air temperature and humidity. Water that has been exposed to the night sky in summer will cool the breeze that passes over it during warm days. Site a building such that water-cooled breezes can be directed into it. Daytime on shore sea breezes should be put to use by orienting buildings towards the sea in humid and warm climates and seasons.

3. Trees can provide summer shading and allow winter solar gains:


Trees can be useful shading devices. Deciduous trees can block up to 85% of the sun radiation in summer. In winter without leaves, they permit up to 70% of the sun`s energy to pass between their bare branches. However, it would take a very large tree to almost fully shade a solar-oriented facade in summer, and proximity to trees and tree roots might bring other problems for both building and tree.


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