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THE SOLAR THERMAL HEATING SYSTEM

Components of the system:

• Solar collectors
• Thermal reservoir
• Heating equipment
• Control system

Solar Collectors:

(Solar collectors on rooftop)

• A transfer medium (water or air) is circulated through the collectors to absorb the sun's heat
• Typically located on the roof of a building
• Various types are available: Flat plate, evacuated tubes, concentrating reflectors, etc.

Thermal Reservoir:

• Essentially just a water tank
• The water stores heat collected by the solar collectors
• Must be very well insulated and able to withstand high temperatures
• The larger the tank the more heat is can store
• Domestic potable water can be preheated via a heat exchanger

Heating Equipment:

(Heating pipes in a concrete slab)

Transfers the heat collected from the sun to the areas to be heated. Examples are:

• Slab heating
• Ducted heating
• Radiators
• Underfloor heating
• Forced convection

Control System:

(Manifold and actuators for slab heating)

Controls the solar and heating equipment to maximise efficiency and comfort. Can include:

• Thermostats
• Solar controller
• Pumps
• Manifold actuators
• Zone valves
• Relays

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