There are approximately 17,000 heat networks in the UK of which 5,500 are district heat networks and 11,500 communal heat networks. Whilst these numbers sound impressive, heat networks still only contribute around 2% of the UK's total heat demand.
This guide aims to improve the industry's collective understanding of the heat network itself, addressing some of the most commonly-held misconceptions surrounding them in the process.
Currently in the UK the most popular heating system is an individual gas boiler, however this is not the most efficient heating method.
District Heating is the concept of one large energy centre to provide the heat demand for a number of properties, residential, commercial or multi occupancy.
The Energy Centre can use a variety of heat sources such as fossil fuels (e.g. gas CHP), Energy from Waste, industrial waste heat or renewable energy sources such as heat pumps, biomass or anaerobic digestion to heat the water.
The hot water travels through an underground insulated pipe network to a heat interface unit (HIU) located in each building. This provides heating and hot water to each building which allows individual temperature control to each building. The cold water then returns back to the energy centre to be heated and circulated again.
- Significantly reduces CO2 emissions
through the local generation of heat
- Lower maintenance Costs
- Lower costs to the end-user
- Significant installation cost savings over
- Renewable energy can be used to
heat the network
- Possible to change the fuel source
- User independence and security of
RAUTHERMEX is a pre-insulated PE-Xa pipe district heating, biomass, biogas and heat pump applications. The high performance PU foam makes it ideal for large district heating over long distances where heat losses are critical. Lightweight polymer pipes such as RAUTHERMEX offer huge advantages over traditional steel pipework due to the speed and ease of installation.
RAUTHERMEX is available in UNO 25-160mm and DUO 20-75mm
RAUTHERMEX Plus also available.
RAUVITHERM is a pre-insulated PE-Xa pipe for district heating, biomass, biogas and heat pump applications. It has proved immensely popular since its launch due to its high flexibility and easy to use REHAU EVERLOCTM jointing technology.
RAUVITHERM is the only PE-Xa district heating pipe manufactured in the UK which saves an estimated 29% on Co2 emissions annually.
RAUVITHERM is available in UNO 25-125mm and DUO 25-63mm.
Due to the reduction in flow temperatures in new district heating networks, polymers are becoming increasingly accepted in place of traditional steel pipes. REHAU can now offer PP-R district heating pipes in 200-355mm (DN150-250) to be used on large district heating networks to complement their market-leading PE-Xa district heating pipes. PP-R pipes have been used across Europe for many years in district heating applications.
PP-R district heating pipes are joined via butt-welding technology, which is already commonly used in the gas and water sectors in the UK. Please note, installers will need to be become certified on a training course prior to any installations.
What used to be only possible for cold water, gas and steel pipe heating systems is now available for hot water: NEXUS, the first hot tapping system for PE-Xa district heating pipes. Exclusively from REHAU.
*applies for d125, up to 50% at d63
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Pre-insulated Butt Welding
What is District Heating?
Benefits of District Heating
Why Choose REHAU?
REHAU NEXUS hot tapping system
RAUVITHERM Shroud System
RAUTHERMEX Shroud System
RAUTHERMEX pipes have been chosen to provide efficient and affordable heating to more than 300 social housing ...
RAUTHERMEX Plus chosen for more than 350 homes offering affordable, low carbon heating.
1970's steel pipework replaced with RAUVITHERM pre-insulated polymer pipework on two social housing developments .
The association built fifty new flats and houses around a community biomass system and used REHAU’s RAUTHERMEX ...
A total of 29 buildings are part of the scheme, almost 90% of the total, including the famous Castell Deudraeth ...
125 acre estate features more than 7km of RAUTHERMEX pipework, in what REHAU believes is one of the largest polymer ...