Raychem
Trace Heating Systems
Engineering in today’s environment:
Hot Water Recirculation Systems
Current building regulations require architects
and building engineers to actively seek opportunities to reduce
energy and/or to increase the use of renewable sources of energy.
The main focus of initial activity with respect to such reductions
concentrated on reducing energy consumption for space heating &
cooling - with the inevitable result that the energy required for
domestic hot water generation now represents an increased proportion
of the current energy needs of a building.
Therefore any energy saving that can be realised on the warm hot
water distribution will have a larger proportional impact on the
total energy reduction of a building than most other services.
The conventional means of distributing hot water throughout a
building is that of a ‘flow & return’ system of recirculated DHWS.
It is a classic example of pragmatic engineering design, albeit with
an increasingly complex range of valves and controls aimed at
achieving a hydraulic balance across the pipe network. The main
design criterion of the flow & return solution is simply the
temperature of the water at the tap outlet, with no consideration of
energy efficiency... in fact the simplest synopsis of the re-circ
system is that it is actually designed to lose heat!
Low Energy Hot Water Systems
An established Modern solution to an age old design problem:
The Raychem hot water temperature maintenance
system (HWAT) offers a simple, proven, energy-efficient replacement
for re-circulation systems. Combining hot water comfort with
economy, the self regulating heating cable on a single-pipe supply
network compensates for the heat loss of the water in the pipe and
ensures hot water is delivered at the desired temperature all the
way to the HWS outlet. The result is a system that
has as much as 50% less pipe work, delivery quality hot water to
every outlet regardless of location on the pipe network. The Raychem
HWAT system is specifically designed for this application and has
been shown to realise energy reductions of the order of 60%.
The Raychem HWAT (Hot Water Temperature Maintenance) system
therefore manages to provide high-quality and comfortable hot-water
to every outlet, by the most energy efficient means – delivering
benefits to everyone from the designer through to the end-user.
Key benefits of Hot Water Maintenance systems include:
-
Huge design benefits: i.e. no hydraulic
balancing needed!
-
Flexible design & installation – modular
components allow offsite build benefits
-
Significant reduction of pipe work, reducing
cost & installation time
-
Maintenance free system
-
Significant reduction in power consumption –
up to 65% saving!
-
Lower running costs
-
Installation examples include:
-
Hartcliffe Education Centre, 2.8km HWAT-M
-
Brislington Enterprise College, 2.7km HWAT-M
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Bristol Brunel Academy, 1.4km HWAT-M
-
Whitefield Fishponds Community School, 1.2km
HWAT-M
-
Various Glasgow Schools - 16km+ HWAT-M & HWAT-R
-
Ascot Race Course - 12km+ HWAT-M
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The New Wembley Stadium - 9km HWAT-M
-
Swiss Re (The “Gerkin”) - 3km HWAT-M
-
Pinderfields & Pontefract Hospitals - 17km+
HWAT-M
-
Albion Riverside, London (residential) - 12km
HWAT-M
-
City Inn, Westminster - 13km HWAT-M
Raychem SaveWatt: Modelling the Energy & Cost
Benefit of a Single Pipe System
Raychem provide a FREE OF CHARGE system
comparison based on specific project data. Let us prepare a detailed
real project comparison between recirculating and single pipe hot
water systems. Contact us for more information.
TraceCalc.Net Construction
Generate your own system designs in minutes. Get
valuable electrical loading information based on your actual design
parameters.
Request information Raychem Trace
Heating Systems HWAT Hot water temperature maintenance
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