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Solar Hydronic heating

Much of Australia’s climate is well suited to solar energy. It is one advantage of the often hotter weather.

Solar water heating is not new. Past generations have used it for hot showers and other household applications. But the hot summer weather that produced the solar energy was not the weather that required heating. Heating was only required in the colder months.

More modern technology has made solar power useful in winter and overcast weather. Tube based solar panels have replaced flat plate panels. These tube bases systems have a surface area that maximises absorption of solar radiation and vacuum insulation that minimizes heat loss. This means far more energy can be collected during cooler weather months.

 

Heat pump Hydronic

Solar Hydronic heating requires an intricate system of pipes and other apparatus. It is obviously no benefit if the hot water stays on the roof. A mixture of gravity and at least one pump is used to bring water down from the roof and circulate it under the floor.

 

Hydronic Buffer Tank

Hydronic buffer tanks are used in closed loop water heating systems, and often in other underfloor water heating systems. This buffer tank improves system efficiency, particularly when operating at anything less than full capacity; is also prevents short cycling of the boiler, which is where the boiler keeps rapidly turning on and off in order to keep the water temperature at the specified level. The buffer tank allows the boiler to heat the water adequately and then automatically switch off when no longer needed.

 

Hydronic Separator

Hydronic separators are open vessels with a water inflow and outflow. They create an area of no velocity and no pressure drop. A Hydronic separator are used to separate the boiler from the water piping system, and to section off different subsections of this water piping system. This means that the system or subsystems can have their own, often smaller, pump mechanism that is appropriate for the area being heated.

Using a hydronic separator mean we are not forced to work to the flow rate specification of the boiler. We can use the boiler for heating the water and use the pumps (after the hydronic separator) to set a suitable water flow rate. 

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