Elco References E

The new system Two compact, efficient ELCO gas condenser boilers RWE Energiedienstleistungen GmbH decided on a high- quality natural-gas double condenser-boiler system of the RENDAMAX 3602 series, with hydraulic two-way switch and 2 modulating, speed-controlled boiler-circuit pumps. One boiler covers the basic demand, the second being switched in when there is peak demand. Because of its design, with a low volume of water and compact heat exchangers, this configuration proved to be the optimal solution for efficient heat transfer. The old boiler and the buffer tanks were removed. The new system has a footprint of only 80 m². The freed 320 m² can be used as additional storage space. Equipment Boilers Rated power Total power Standard efficiency factor New system 2 gas condensing boilers, R 3602, cascaded 747 kW each 1,494 kW 106 % / 109.8 % From the old boiler to the modern heating system Equipment Boilers Rated power Total power Storage Total energy consumption Old system 2 electrode heating boilers 2,400 kW each 4,800 kW 3 buffer tanks, 80,000 l each 1,750 MWh per year The starting point The old system: inefficient and sluggish The basis was an electrically operated heating boiler with 3 buffering tanks of 80,000 litres each. At night, the excess energy was used to heat the buffers. The system as a whole was inefficient and sluggish. The boiler not only used up too much energy; with its large buffering tanks it also took up a tremendous amount of space. In the course of an energy-efficiency investigation at many different locations, the management decided to renew the boiler system at the Weseler Straße address. Executing partners were RWE Energiedienstleistungen GmbH (ED) from Dortmund. As a contractor, this RWE subsidiary will in future deliver warmth for heating the rooms, the ventilation and air-conditioning, and the warm water for the canteen. Energy efficiency project for the RWE Regional Centre, Münster