ENERGICENTRALEN Bjerringbro

ENERGICENTRALEN Bjerringbro, Viborg Kommune
Bjerringbro, Denmark PDF Summary  
Energicentralen:  a jointly owned district energy plant to the benefit of citizens and industrySee video: https://www.youtube.com/watch?v=P6E_D3hBnj0&feature=youtu.be Improvements of the local environment and a positive effect on the climate due to reduced CO2 emissions are two important results of this project created by an equal partnership between Grundfos and Bjerringbro Varmeværk (DH Company).  A third result is a reduction of the annual fuel costs.Energicentralen is the jointly owned energy station hosting five compressors to co-generate heating and cooling. It is linked to a nearby Aquifer Thermal Energy Storage (ATES) used as a seasonal storage. Energicentralen is also connected to Grundfos’ machinery via a new cooling network and to the CHP-plant and the DH-station via an existing heat transmission line. The two partners have shared – one to one – the total investment of 4.48 mill. €. Also the savings achieved are equally shared so that each partner will save 200,000 € annually. The pay back period will be less than 15 years and the annual reduction of CO2 emission will be about 3,700 tons. The plant performs as follows: • 3,500 MWh of cooling based on 9° C groundwater will during four months in the summer be supplied by from the ATES and will cover the full demand in the machinery connected. • 10,500 MWh of cooling will during 8 months be supplied by the cooling machinery in Energicentralen, which will cover the full cooling demand and the re-cooling of the groundwater. • 13,400 MWh of district heating will be produced yearly by heat from the cooling machines. Bjerringbro Varmeværk was founded in 1959 and today has 2,100 consumers (buildings) with an annual production of 90,000 MWh. The new plant will cover some 15% of the annual demand. The original boiler station from 1959 was designed for operation on oil but has later on been converted to operate on natural gas. In 1994 a CHP-plant based on natural gas engines was added, and in order to achieve flexibility between power and heat generation, a heat storage tank was installed. In recent years, heat pumps were installed to cool and condense the water in the flue gases in order to increase the heat production.  The project demonstrates that the innovative solution was created by virtue of the open and equal cooperation between the two partners. It turned out quite early in the planning process that each of them alone was not able to realise savings to the same extent as achieved