The heat pump
The heat pump is an extremely efficient renewable technology, capable of performing air conditioning, heating, and domestic hot water production. This technology takes advantage of the free and unlimited differential accumulated in the air, the ground and surface, and underground aquifers.
With regards to geothermal heat pumps suitable for shared ground loop arrays inewa has chosen the M-TEC Heat pump 2-6 kW “Cube”. Developed to fit Shared Ground Loops, the exclusive Shoebox geothermal heat pump is ultra-small and ultra-quiet and it can be easily installed inside a home, generally in a ventilation cabinet.
The shared geothermal circuit
GOEZ shared geothermal circuit usually uses heat pumps in SGLA systems (shared ground loop arrays). That is a district heating and cooling network associated with individual heat pump systems (PdC), within a shared "ring". A shared geothermal loop allows several individual heat pumps to be served at the same time. This application limits the initial installation costs compared to a centralized system while fragmenting the exposure to "total system's failure", by dividing the risk among all different users, so that a possible failure of an HP does not compromise other's operations.
What are Shared Ground Loop Arrays?
SGLA is the acronym for Shared Ground Loop Arrays, which represents the fifth-generation approach to district heating and cooling. SGLAs are decentralized geothermal heat pumps (one per house) connected to a network of pipes that pushes heat at room temperature (-5 ° C to 20 ° C) through a group of modules installed in the ground, imitating a traditional gas structure. A Shared Ground Loop Array connects a series of wells capable of creating high-temperature to heat several homes in which geothermal heat pumps are installed.
GEOZ identifies the heat pump for use within hybrid systems with photovoltaic, hydroelectric and mini wind.
What are the advantages of a hybrid system?
One advantage is combining renewable energy systems (solar/hydroelectric/small wind) with heat pumps, resulting in increased renewable energy self-consumption, reduction of energy consumption along with energy-related costs in the bills. This integration also allows the accumulation of thermal energy, transforming the system and the building into thermal batteries. This is because the heat pump is automatically set to comfort mode (higher temperatures) when the renewable source (solar/hydroelectric/small wind) exceeds the production threshold, favoring the accumulation of thermal energy for the production of domestic hot water, heating, and cooling.