Heat metering
Heating accounts for nearly half of final energy consumption in the UK (48% in 2013) and 78% of non-transport energy use (DECC, 2013).
Heat can be considered to be a utility, like water, gas, and electricity. Communal or district heating systems are becoming more common and these involve the centralised generation of heat and the distribution of this heat to individual dwellings. Heat meters are then used to measure the amount of heat delivered to dwellings, just like water, gas, and electricity meters.
When a householder or business has a heating system which is classified as renewable, the government offers a financial incentive which is related to the amount of renewable heat generated. For businesses (and some homes), the payment is made according the metered quantity of renewable heat generated.
The fiscal nature of meters, whether they are being used to establish monies due or monies receivable, means that accuracy is extremely important. However, there is not a long tradition of heat metering in the UK, and building services engineers may have little or no previous experience of heat metering installation and operation. In addition, metering heat is a more complex than metering other utilities.
A government report Heat Meter Accuracy Testing, published in November 2016, looks at heat metering applications, standards and legislation and heat metering technologies.
The research behind the report was directed at investigating the accuracy of different meter types, particularly when the meters are incorrectly installed. It touches on how the accuracy of meters can decline over time, and after how long recalibration should be carried out.
The report is directed at policy makers, housing associations, district heating providers, heat meter manufacturers, consultants, heating installers, and householders.
This article was originally published here by BRE Buzz on 16 Jan 2017. It was written by Alan Abela.
--BRE Buzz
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