22 INDUSTRY WATCH An outstanding success or not? Since April 2005, when Steve Sutton, technical manager at HHIC, asks whether revisions to the Building Regulations came into force, stating that all replacement gas or oil boilers must be a condensing type, there has been much debate on whether they do actually condense in-situ? If you ask a registered gas engineer they will advise that frozen condensate pipes and the plume produced by the boiler, especially when the condensing boiler was first introduced, is simple evidence that the boiler is condensing. Today manufacturers have made improvements in their designs to resolve the issue of frozen condensate and there are also solutions to manage boiler plume. The findings of a report in November 2013, from the Department for Environment, Food and Rural Affairs entitled: UK’s Carbon Footprint 2004-2011, indicate that the UK’s total carbon footprint fell by 14% between 1997 and 2011, with a peak in 2004. A united approach Our united approach to condensing boilers has been fundamental in reducing our carbon emissions. Noncondensing boilers lost valuable warm waste as the gases travelled through the boiler's flue and escaped into the outside atmosphere, taking valuable heat with them. They varied in efficiency from around 70-80%, depending on their age and the design of the boiler. Modern condensing boilers extract extra heat from the waste gases by condensing the water vapour produced to liquid water, thus recovering its latent heat. A typical increase of efficiency can be as much as ten to 12%. Manufacturers use the latest 3D design techniques to produce high performing heat exchangers. Software is available that can replicate the water flow patterns in the heat exchanger to optimise the design, even before it is put to the test in an appliance. These heat exchangers play a large part in the boiler’s performance and todays designs are more efficient, even without the added benefit of the useable heat that is extracted by a secondary heat exchanger using the waste gas. Performance standards European committees have produced performance standards for testing condensing boilers which allows for the comparison of different manufacturers products and provides the information for the energy efficiency labels. These tests are checked by a recognised notified condensing boilers do actually condense? Sometimes innovation goes unseen, existing only in the knowing glances of our talented engineers. Speedfit Technology is one such innovation with many interesting stories to tell. Billions of JG fittings are used around the world and are often found where least expected. Prestigious brands like Ferrari ®, Heineken ® and BT ® have trusted us for decades. Why? Because the same precision engineering, extensive research and rigorous testing go into all of our fittings from plumbing to drinks dispense to air compression & automotive.
HPM May 2017
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