Seaplane Harbour (Lennusadam)

Museum of naval history. There are 3 heat pumps. They are differed by the output power and they are connected in cascade system. This way these pumps create a whole unit. The working principe is created upon the need – first starts the first pump’s first compressor, then second pump’s first compressor and then third pump’s first compressor. When there is more heating needed the pumps start their second compressors in a same way. The Heat pumps automatic control system is directing circluations pumps, electric heating boilers, compressors, seawater pumps and cooling system. The heat pumps are the main connection between the seawater heat exchanger and the hangars heating system. This way its the heart of the whole system.