The introduction of district heating will have a significant impact on the building services industry, from the architecture of a building to its operation. This technical note investigates a delimited portion of the potential of currently unutilised heat which has the possibility to supply district heating networks in the UK. The UK industrial sector, wastewater treatment facilities and the existing UK waste incineration plants all produce waste heat available in a temperature range suitable for extraction into district heating networks via commercialised techniques broadly used in other countries.

This technical note presents a comparative literature review, comparing UK statistics and studies with performance data based on Swedish operational facilities. It finds 51.7TWh of currently unutilised heat could be recovered annually, with a significant associated emission decrease if incorporated into the heat supply of the UK building stock.

A quantitative analysis is carried out to compare the identified potential with the current UK heat demand and the potential impact on the UK carbon emissions is estimated. The calculations indicate a reduction of 14% in the required UK total domestic heat supply, despite only including a limited fraction of the available waste heat potential.

Practical application

This technical note serves to highlight and emphasise the large amount of available waste heat potential currently not utilised in the UK. By estimating the impact of waste heat utilisation and incorporation into district heating and heat networks in the UK, the technical note aims to fuel discussion around the further incorporation of waste heat to be utilised in the UK heat sector.

中文翻译：

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与未利用废热的回收有关的潜在碳排放量减少

从建筑物的结构到运营，区域供热的引入将对建筑服务行业产生重大影响。本技术说明研究了当前尚未利用的热量的有限部分，这些热量有可能在英国提供区域供热网络。英国工业部门，废水处理设施和现有的英国垃圾焚烧厂都通过在其他国家/地区广泛使用的商业化技术，将可利用的余热产生的温度范围适合提取到区域供热网络中。

本技术说明提供了比较文献综述，将英国的统计数据和研究与基于瑞典运营设施的绩效数据进行了比较。研究发现，每年可以回收51.7TWh的当前未利用的热量，如果将其纳入英国建筑存量的供热系统，则可显着减少相关的排放。

进行了定量分析，以将识别出的潜力与当前英国的热需求进行比较，并估算其对英国碳排放量的潜在影响。计算结果表明，尽管仅包括了有限的可用余热潜力，但英国所需的国内总供热量却减少了14％。

实际应用

本技术说明旨在强调并强调目前英国尚未利用的大量可用余热潜力。通过评估废热利用以及将废热纳入英国区域供热和热网的影响，该技术说明旨在推动有关将废热进一步纳入英国供热部门的讨论。