The key problem: If enough solar panels are installed to provide reasonable heat injection when sunny in the depth of winter, then summer would become a real issue with potentially many MW of heat energy being generated with nowhere to go.
The key solution: The DSH system must store much of the summer heat. It took along time to get it right but eventually heat was storable in a low cost, insulated, sub-slab region. A custom DSH controller optimizes the use of solar heat, and intelligently routes heat to where it is required, including to hot water. No expensive boreholes are required. Insulation is typically upgraded in these project, a frost wall will also require insulation, O2PEX pipes installed under and in the slab. Each project requires the heat core storage and slab heating pipes to be engineered to optimize performance.
In addition a low energy pump station is used to simplify the pumping and diverting challenges, and a custom controller intelligently operates the pump station to optimize the collection, distribution and storage of the heat energy.
To improve efficiency, the roof angle, solar area, and direction can be optimized during design, adding to the efficiency. Roof load capacity may have to be adjusted for the static load of the panels,
Quantifying the Solar Energy:
Most people are not aware of the massive solar energy potential with respect to thermal or heat energy. It typically runs >3-4X the energy potential of PhotoVoltaic panels given the same area.,
To give you an idea of the vast amount energy collectible:
- Each of our 2m x 24 tube solar panels are rated at ~1.8kWt/hr.
- If a home requires 8 panels then the heat energy is ~14.4kWt/hr
- Thus in a typical 10 hour summer sunny day you may generate ~140kWt
- If there were only 200 of these sunny days per year, the total generated might be in the order of ~28MWt/yr!
If you have any questions or concerns, please visit our Contact Us section to speak with a Digital Solar Heat representative. Please watch this video, press refresh to see again.
In simple terms this is how the DSH system operates, Commercial systems can be scaled up to suit each site and demands.