Passive Solar Design
DOE- Passive Solar Design For Your Home
Increase energy efficiency & comfort in homes by incorporating passive solar design features.
Design with the sun in mind.
Sunlight can provide ample heat, light, and
shade and induce summertime ventilation into
the well-designed home. Passive solar design
can reduce heating and cooling energy bills,
increase spatial vitality, and improve comfort.
Inherently flexible passive solar design principles
typically accrue energy benefits with low maintenance
risks over the life of the building.
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How Thermal Mass Works
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Thermal mass is the ability of a material to absorb heat energy. A lot of heat energy is required to change the temperature of high density materials like concrete, bricks and tiles. They are therefore said to have high thermal mass. Lightweight materials such as timber have low thermal mass.
Appropriate use of thermal mass throughout your home can make a big difference to comfort and heating and cooling bills.
Correct use of thermal mass moderates internal temperatures by averaging day/night (diurnal) extremes. This increases comfort and reduces energy costs.
Poor use of thermal mass can exacerbate the worst extremes of the climate and can be a huge energy and comfort liability. It can radiate heat all night during a summer heatwave, or absorb all the heat you produce on a winter night. To be effective, thermal mass must be integrated with sound passive design techniques. This means having appropriate areas of glazing facing appropriate directions with appropriate levels of shading, insulation and thermal mass.
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NSEA Solar Energy For Your Home
A "passive" solar house provides cooling and heating to keep the home comfortable without the use of mechanical equipment. This style of construction results in homes that respond to the environment.
For passive heating and cooling, the plan of the house, careful site selection and planning, construction materials, building features and other aspects of the home are designed to collect, store and distribute the sun's heat in winter; and to block the sun's rays in summer. Passive solar houses can be built in any architectural style and in any part of the country.
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Passive Energy Design for A Northern Climate
Passive solar design is agroup of building designstrategies that can be utilized to reduce the need for mechanical heating,cooling and lighting.
When combined with basic energy conservation and energy efficiency practices, these strategies can actually increase the comfort of buildings and can make dramatic reductions in energy costs. Theses trategies include passive solar heating, daylighting, natural ventilation, radiative and ground-coupled heating and cooling, and peak-load shifting with thermal mass
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Passive Solar Design
Passive design is design that does not require mechanical heating or cooling. Homes that are passively designed take advantage of natural energy flows to maintain thermal comfort.
Incorporating the principles of passive design in your home:
Significantly improves comfort.
Reduces or eliminates heating and cooling bills.
Reduces greenhouse gas emissions from heating, cooling, mechanical ventilation and lighting.
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WBDG- Passive Solar Heating
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Passive solar heating is just one strategy in a group of design approaches collectively called passive solar design. When combined properly, these strategies can contribute to the heating, cooling, and daylighting of nearly any building.
Passive solar heating in particular makes use of the building components to collect, store, and distribute solar heat gains to reduce the demand for space heating. It does not require the use of mechanical equipment because the heat flow is by natural means (radiation, convection, and conductance) and the thermal storage is in the structure itself. Also, passive solar heating strategies provide opportunities for daylighting and views to the outdoor through well-positioned windows.
It is best to incorporate passive solar heating into a building during the initial design. The whole building approach evaluates it in the context of building envelope design (particularly for windows), daylighting, and heating and cooling systems. Window design, especially glazing choices, is a critical factor for determining the effectiveness of passive solar heating. Passive solar systems do not have a high initial cost or long-term payback period, both of which are common with many active solar heating systems.
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