The project began with the need for an effective cooling solution for the offices of a commercial property in Brüttisellen. Together with the client, we developed a concept that does more than simply cool the building. The existing gas boiler system was supplemented with a cascade of two Alpha innoTec NP-AW 20-20 air-to-water heat pumps. The system was deliberately sized around the building's summer cooling demand.
With around 40 kW of cooling capacity, the heat pump cascade can effectively cool the building in summer. This output would not, however, be sufficient to cover the complete heating demand in winter. The existing gas boiler was therefore retained and integrated into the new system using a changeover valve and a defined bivalence point. Whenever the heat pumps can cover the heating demand, they provide part of the building's heat. At higher loads, the gas boiler remains available. Domestic hot water also continues to be produced by the gas boiler. For several years now, the system has provided noticeable cooling in summer while reducing gas consumption in winter.
In Zumikon, we replaced the existing heat pump with the appropriate NIBE successor model. The new unit had to continue providing heating, domestic hot water and cooling from a very small plinth – and we also brought the faulty wine-cooling unit back into operation.
-p-800.jpeg)
Two Fröling wood-chip boilers with outputs of 150 and 60 kW supply houses and apartment buildings in Freudwil through a private district heating network. We installed the central plant, substations and complete connections for the individual heat consumers.
With over 50 years of experience, we offer innovative solutions for your building technology needs – from heating and plumbing to modern energy management. Quality and customer satisfaction are our top priorities.
Burkhardt Gebäudetechnik AG
Oberdorfstrasse 54
8600 Dübendorf
