DEDICATED PRESSURE SYSTEMS LTD.

The Institute of Plumbing Telephone 01372 803 675
Fax 01372 803 678
 Email dps@heatweb.com
 Internet http://www.heatweb.com
Operation of the GX Heat Bank Thermal Store (Patented DPS Technology)

The GX Heat Bank Thermal Store was originally designed to meet a very specific local authority requirement for a small, efficient, high performance, mains pressure hot water and heating system, that was also easy to install.  Components were to be easy to service, with reliability designed in.  A cylinder small enough to fit under a kitchen worktop should be capable of driving a three bedroom house.  


  

Mains Pressure Hot Water: 
It is well established that plate heat exchangers can provide lashings of hot water, and isolate the store from both mains water pressures and contaminants (salts, scale etc.).
We offer a range of heat exchanger duties, with the standard model providing 100kW of hot water.
To ensure exceptional reliability, the flow switch is of our own custom made design, able to take high flow rates with a low pressure loss, has no internal springs or paddles, has solid simple electrics, and is jam and leak free.
Central Heating:  
The central heating water is pumped directly from the store.  The radiator system has access to the lower portion of the store to drive radiators, and can respond very rapidly to sharp increases in heating demand.  It is however unable to draw the upper section of the store into circulation, ensuring continued hot water supplies.
The absence of motorised valves,  simplifies wiring, makes servicing easier, reduces pressure losses as well as costs. 
As there is a buffer store between the boiler and the heating, there is reduced cycling of the boiler.
Recovery:  
The unique aspect of the GX is its method of recovering through use of a boiler.  The aim of the design is to ensure all energy from the boiler is made immediately available for hot water - and at usable temperatures.  
Additionally, when used in conjunction with a condensing boiler, the system can ensure that return temperatures are kept within condensing levels.
 The return temperature is fixed by the use of a thermostatic blending valve which mixes hot flow water with colder store water to obtain the target temperature.
The system can pull into immediate use relatively hot water returning from the heat exchanger or radiator circuit, and pass it directly through to the boiler and back to the top of the store for immediate use.