• Solar PV
    Solar Photovoltaic (PV) Systems convert sunlight into electricity. You can use this electricity to power your home, business or any other building.
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  • Solar
    Hot Water
    Solar Thermal Water Heating Systems use the sun's energy to heat water for use by homes, commercial buildings and swimming pools.
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  • Solar Space
    Solar Thermal Space Heating Systems capture the sun's energy to supplement the existing heating system for a home or commercial building.
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  • Small Wind
    Small Wind Energy Systems contain electric generators that convert wind power into clean, emissions-free power.
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  • Geothermal
    Geothermal heat pumps use the earth's energy to provide heating, cooling and hot water for residential and commercial buildings.
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  • Biomass
    & Bio Fuel
    Biomass Heating Systems generate heat from organic materials and residues. The systems are used for space heating and to heat water.
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  • Combined
    Heat & Power
    Micro Combined Heat and Power Systems are highly efficient natural gas systems that produce electricity and heat at the same time.
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Solar Space Heating

Solar Thermal Space Heating Systems capture the sun's energy to supplement the existing heating system for a home or commercial building. The heating system intensifies the sun's power to heat water or air that is then used to heat the building. While some solar collectors look like solar photovoltaic panels, they are quite different. Solar thermal panels do no generate electricity, but simply absorb the sun's heat.

Types of Solar Space Heating Systems

Hydronic Systems and Air Systems :
There are two basic types of active solar heating systems: those that use hydronic collectors, and those that use air collectors. The collector is the device that is exposed to the sun, and warms air or a fluid for use by the system.
  • Hydronic systems: These systems are an extension of solar water heating systems. Hydronic collectors warm water or an antifreeze solution by circulating them through a manifold that is exposed to the sun.
  • Air systems: These systems are designed to collect and transfer heat to warm the air circulating in the building. As the name suggests, air collectors similarly pass air through a sun-exposed collector, rather than a liquid.
Both hydronic and air systems collect and absorb solar radiation to heated air or a liquid then use the heated air or liquid to transfer heat directly to an interior building space. or to a storage system from which the heat can be distributed. If the system cannot provide adequate space heating, an auxiliary or back-up system makes up the difference. Liquid systems are more often used when storage is included, and are well suited for radiant heating systems , boilers with hot water radiators, and even absorption heat pumps and coolers . Both air and liquid systems can supplement forced air systems.

Active and Passive Systems
Active solar water heating systems use pumps to circulate the liquid warmed by the collectors Passive systems do not use pumps, but instead use gravity and water pressure to circulate the liquid instead.

Active systems come in two types:
  • Direct circulation (open loop): water is circulated directly through the solar collectors. This system cannot be used in areas where temperatures drop below freezing.
  • Indirect circulation (closed loop): a non-freezing liquid is circulated through the collectors and heats the water in a tank afterwards through a heat exchanger.
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