APARTMENTS
Air to water heat pumps are set up in a mini-collective system on the roof of or next to the building. This means there is always capacity, even if one of the heat pumps were to fail. In the collective configuration, the heat pumps provide heating and cooling via a circuit. Water from the circuit is used to heat the apartments during winter and cool them during summer. There is a heat pump boiler in each apartment. It draws heat from the central circuit to produce domestic hot water. The 'Brain' and 'HVAC' modules provide smart control of all system components and a connection to the Cloud.
NEW-BUILD
Collective new buildings are subject to very strict insulation and energy consumption requirements. In this case, a heat pump is extremely effective. The collective heat pumps provide hot water for room heating. domestic hot water is produced by a heat pump boiler in each apartment. It uses residual heat from the room heating and buffers the hot water in a tank. The 200-litre buffer tank provides enough hot water for all domestic applications.
Air as a heat source
The heat source chosen for the fully integrated Renson solution is air. A number of collective air to water heat pumps extract heat from the air. The heat is transferred to water in a central circuit. The circuit supplies hot water to the individual hot water circuits. On the return of each individual circuit is a water to water heat pump boiler that provides domestic hot water. The hot water is stored in a 200-litre buffer tank.
External source as a heat source
Besides air, other sources, such as a ground source heat pump or district heating, can also be connected. As with the air to water solution, the central circuit supplies heat to the individual room heating and the heat pump boiler heats the water for individual domestic hot water per apartment.
RENOVATION
The heat pump also offers a solution for renovation projects and existing apartment blocks. In this case, opting for a heat pump is, more than ever, both an ecologically and economically smart decision. However, a number of conditions apply in terms of heating systems and insulation. In this scenario the heat pump can support an existing collective gas boiler or completely replace it. With a complete replacement, the examples of new buildings apply.
Parallel hybrid system
In a parallel system, the heat pump is connected to the existing boiler. The smart control calculates when the heat pump or gas boiler kicks in based on efficiency and price. The gas boiler will only step in during very cold periods, resulting in direct cost savings.
Independent control
If a collective domestic hot water tank is already in place, the water for heating and sanitation can be disconnected. In this independent configuration, domestic hot water is produced by a gas boiler. The heat pump controls the room temperature for all individual circuits.