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Minggu, 10 April 2011

What Is Passive Solar Cooling And How Does It Work?


Green is a hot topic these days, but do not have to spend tens of thousands of dollars on solar panels. As summer months approach, and energy costs are creeping more and more, the implementation of passive solar could be a great middle ground.

passive solar uses sunlight for energy without active mechanical systems. solarium or sun room on the equator side of the house would be a common example of passive solar use.

Passive cooling is a subset of passive solar use and as you might guess involves cooling the building by natural means. primary focus of passive cooling is:

1 Slow transfer of heat in the house.

2 Remove unwanted heat from the building.

You should avoid any large glass surfaces directly into / around the living room. Large windows will allow unwanted heat transfer in these areas live.

window and door openings may play a major role in the overall rate of heat transfer and therefore in your cooling requirements. Solid wood doors with no windows conducts heat about twelve times faster than the foam-filled Energy Star doors. Poor quality doors and windows can allow outside air infiltration, and radiate heat through the outer envelope of the house. This can lead to higher cooling costs.

to the west rooms are prone to overheating because of the low afternoon sun can penetrate deeper into the room during the hottest part of the day. Some method of shading the west and east of the low sun are:

1 Vertical Blinds and Shutters

2 Planting deciduous

3.West facing windows should be minimized or eliminated entirely

Isolation is also a key component of heat transfer. a sign of poor thermal design is an attic that gets hotter during the day from a high outside air temperature. This can be reduced by properly insulating the area and with cool or green roof. This in itself can reduce roof surface temperature by 70 Degress F. You should have a shiny barrier and air gap under the roof.

The mild climate with a dry night, the two types of natural ventilation can be achieved by careful design: cross and stack ventilation, passive-

.

Cross Ventilation holes used on two opposite sides of the room.

passive-stack ventilation uses vertical space to create a vacuum as it rises by natural convection. entrance of fresh air on the bottom creates upward moving currents.

The fresh air ventilation to filter through Merv 8 + air filter. Avoid using window screens for direct unfiltered ventilation as dust mites and other harmful organic materials, can be booked

The fresh air ventilation to filter through Merv 8 + air filter. Avoid using window screens for direct unfiltered ventilation as dust mites and other harmful organic materials, can be booked

...

The fresh air ventilation to filter through Merv 8 + air filter. Avoid using window screens for direct unfiltered ventilation as dust mites and other harmful organic materials, can be booked

......

Find a great online by Nelson Design Group.

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