- Geothermal heating with a 50 KW heat pump
- Usually, the heating outline would be placed next to the building or drilled horizontally; we placed it under the building as a battery that stores energy
- Solution cuts the costs from manufactural batteries
- The system reduces peak loads from the electricity network and helps to save on production electricity costs
- Peak load from the grid was decreased by 30%
By integrating the building structure as thermal energy storage into the building services concept, thermally activated building systems (TABS) have proven to be economically viable for the heating and cooling of buildings.
With separate zone return pipes energy savings of approximately 15–25 kW h/m2 a, or 20–30% of heating as well as cooling demand, can be achieved, compared to common zone return pipes, where energy losses occur due to mixing of return water. A strong impact on energy efficiency can also be observed for the control strategy.
Thus, by intermittent operation of the system using pulse width modulation control (PWM), the electricity demand for the water circulation pumps can be reduced by more than 50% compared to continuous operation.
The heating and cooling source for this building is the ground (geothermal), which works with a 50 kW heat pump. As a rule, usually, geothermal heating contour/outline would be placed horizontally next to the building or drilled vertically into the ground.
Our innovation with this building is that the heating contour/outline is placed under the production building, not aside. We use the ground as a battery that stores energy, so it doesn’t use expensive and cumbersome manufactural batteries.
This system reduces peak loads on the electricity network and helps save on production electricity costs. The cooling and heating plant was reduced by more than 50% by optimizing usage of air conditioning and indoor climate systems. The grid peak load was decreased about 30%.
