Baxi-SenerTec Combined heat and power Heating systems Renewable heating News 270911

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BAXI-SENERTEC UK - Dundee City Council Discovers Sustainable Heating Solution From Baxi-SenerTec UK

Dachs mini-CHP from Baxi-SenerTec UK, part of Baxi Commercial Division, has been identified by Dundee City Council as a consistently cost-effective element of its drive to achieve energy efficiency. Dundee, recognised throughout history as a leader in many areas and not least as the City of Discovery, is playing an influential role in the nationwide drive to create a sustainable energy infrastructure for the long-term. The City Council has trialled different renewable and low carbon alternative heating technologies and the Dachs mini-CHP combined heat and power solution is being variously deployed in the city, reducing carbon emissions and improving the energy efficiency of buildings of diverse use.

The Dachs mini-CHP solution is designed to run continuously in buildings with a large heat load and almost continuous operation. For example, in Brington Place, a home for elderly residents where the heat load was being met by three condensing boilers, the operation of a Dachs mini-CHP greatly reduced the call on the boilers to supply the heat load, whilst generating electrical power to meet the power load. The CHP unit, running almost continuously, has delivered 66,000 kWh of electricity and 160,000 kWh of heating since being commissioned. Based on previous bills for electricity from the grid, the savings for the council run home amount to almost £2,500 per annum. These savings do not take into account the benefits that will be derived from the extended operating life of the boilers due to greatly reduced use, the consequential reduced maintenance costs and, not least, the reduced carbon emissions.

The cost-effectiveness of CHP has been confirmed by its use in the plantroom serving the council run library, theatre and office areas in the Wellgate Shopping Centre in the heart of the city. Two Dachs mini-CHP units were deployed to support six boilers that were already in place to meet the heat load.

In an eleven month period following installation, the two units ran for more than 5,500 hours, generating almost 69,000 kWh of electricity and well over 100,000 kWh of heating. The dramatic reduction in boiler workload and the considerable lessening of the grid-supplied power demand, together led to a saving of over £4,000 in running costs. In addition, the two units have jointly avoided nearly 24,000 kg of carbon emissions.

The versatility of CHP has been shown in Menzieshill High School following the installation of an indoor swimming pool. The heat demand of the school was already being met by three 745kW pressure jet boilers and in this instance a Dachs mini-CHP was selected to provide the extra heat demand of the new pool. In addition to meeting this demand, with unused output being used to supplement the school general heat requirement, the CHP generates electricity to reduce the school’s demand on power from the grid.

Dundee City Council has a commitment to trialling new concepts as well as tried and tested solutions in its drive to attain energy saving and carbon emission reduction targets. The suitability of Dachs mini-CHP units to help progress this strategy has been shown by its selection by the City Council in a variety of applications where there is a continuing demand for heat and electricity throughout the year. In such situations, Dachs mini-CHP output can cost-effectively reduce the call on the condensing boiler component of the heating system whilst generating electricity to significantly off-set the call on the electrical grid.