Approach temperature
Heat Interface Units (BG 62/2015) was written by Reginald Brown and published by BSRIA in December 2015. It states: ‘The approach temperature is the smallest temperature difference between the primary and secondary fluids at any point within a heat exchanger. It depends on the design of the heat exchanger and the operating conditions. For a counter flow or cross flow plate heat exchanger it will usually be the difference between the primary return temperature and the secondary return temperature. Ideally for network efficiency, the approach temperature should be as small as possible, but reducing the approach temperature for a given heat transfer rate means increasing the physical size and therefore cost of the heat exchanger.’
--BSRIA
[edit] Related articles on Designing Buildings
- A technical guide to district heating (FB 72).
- Big growth in district heating markets - now and on the horizon.
- BSRIA articles.
- BSRIA definitions.
- BSRIA guide to heat interface units.
- Communal heating.
- Direct heat interface unit.
- District energy networks
- Domestic micro-generation.
- Heat exchanger.
- Heat interface unit.
- Indirect heat interface unit.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Guidance for conversion of traditional pre-1919 stone buildings.
Industrial heritage in the Ruhr
A marked difference to the fate of industrial landscapes in the UK.
Communities will be able to build their own clean energy.
Why diversity and inclusion matters for SMEs
CIOB’s D&I Charter shows how practical changes can support long-term growth.
Cut electricity bills to power growth
Coalition sends joint letter to the Chancellor.
Gasholders: a history in pictures. Book review.
Recognition, influence and growth
SocEnv identifies three strategic pillars in new strategy to 2045.
Discover the future of roofing, cladding and insulation.
New guidance for professional practice, cultural change and regulation in social housing.
The heritage of nuclear and conventional power stations.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.