SOLAR SERDAR – THERMAL MASS AND COOLING

SOLAR serdar Thermal mass and cooling
Materials used in walls, floor and other sun-exposed parts of the house should have adequate thermal storage or reflectance, that is, thermal properties able to respond to the needs of the climate where the building is located.

In cold climates the capacity of quickly absorbing solar heat and the capacity of providing a slow release of stored heat during the night, can be important when choosing constructions materials: masonry and stone for floors, walls, and roofs are materials that pose that issue. In other words: in cold climates, passive heating demands high thermal mass materials.

Obviously, passive cooling techniques demand mostly low thermal mass materials…

Low thermal mass materials
Low thermal mass walls and structures are a very common option in hot-humid climates with high nighttime temperatures.

Materials like metals and wood have that low thermal mass and are adequate to passive cooling techniques. Metal roofs and wood frames are very common in passive cooling precisely because they don’t heat well and cool quickly, when the sun disappears.

Reflective exterior surfaces
The use of highly reflective exterior surfaces is also advantageous and crucial in passive cooling, due to the large amount of the sun’s heat that can be reflected away by reflection. Reflective roofing is particularly effective.

Color and texture are also important in this case. White or close-to-white colors are good options for reflectance. Shinier and smoother materials are also good options, since they are more reflective.

High mass materials for hot dry climates with cold nights
The use of high mass materials – materials that hold heat well and cool slowly, like masonry and stone for roofs, floors or walls – are adequate in hot dry climates, with cold or relatively cold nighttime temperatures.

Recent studies also show that high thermal mass elements can be used with advantage either in temperate climates and some hot climates. Low thermal mass materials aren’t the only solution.

Natural ventilation
In hot and humid tropical climates, with small day/night temperature amplitude, natural ventilation isn’t a good option. But in most other cases natural ventilation is an excellent passive cooling technique.

Obviously it demands a correct location of the windows, and a proper orientation of the building (which in some cases may collide with other solar heating or cooling strategies).

The windows design (double-hung and casement windows) and placement, as well as the shape and orientation of the building are crucial for natural ventilation strategies.
SOLAR SERDAR
solarserdar@gmail.com

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About CROATIAN CENTER of RENEWABLE ENERGY SOURCES

CROATIAN CENTER of RENEWABLE ENERGY SOURCES (CCRES)• was founded in 1988 as the non-profit European Association for Renewable Energy that conducts its work independently of political parties, institutions, commercial enterprises and interest groups, • is dedicated to the cause of completely substituting for nuclear and fossil energy through renewable energy, • regards solar energy supply as essential to preserve the natural resources and a prerequisite for a sustainable economy,• acts to change conventional political priorities and common infrastructures in favor of renewable energy, from the local to the international level, • brings together expertise from the fields of politics, economy, science, and culture to promote the entry of solar energy, • provides the opportunity to play a part in the sociocultural movement for renewable energy by joining the association for everyone, • considers full renewable energy supply a momentous and visionary goal - the challenge of the century to humanity. Zeljko Serdar Head of CCRES association solarserdar@gmail.com
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One Response to SOLAR SERDAR – THERMAL MASS AND COOLING

  1. solarserdar says:

    SOLAR SERDAR
    • was founded in 1988 as the non-profit European Association for Renewable Energy that conducts its work independently of political parties, institutions, commercial enterprises and interest groups,

    • is dedicated to the cause of completely substituting for nuclear and fossil energy through renewable energy,

    • regards solar energy supply as essential to preserve the natural resources and a prerequisite for a sustainable economy,

    • acts to change conventional political priorities and common infrastructures in favor of renewable energy, from the local to the international level,

    • brings together expertise from the fields of politics, economy, science, and culture to promote the entry of solar energy,

    • provides the opportunity to play a part in the sociocultural movement for renewable energy by joining the association for everyone,

    • considers full renewable energy supply a momentous and visionary goal – the challenge of the century to humanity.

    SOLAR SERDAR

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