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Packaged Plate Heat Exchanger. | 8 Feb 2005 |
With the Government requiring the Industry to stay on course for a big shift to Condensing Boilers in April 2005 (SEDBUK grade A,B ) plus the Building Regulations Part L upgrade in Jan 2006, it follows that designers need to ensure that return temperatures are low enough to realise the increase in efficiency given by the condensing process.
In order to lower the boiler return temperatures the following factors need to be considered and incorporated
- Lower Boiler Flow Temperatures
- Larger Temperature differential across the system, e.g. Flow 70°C Return 50°C giving a differential of 20.
Whilst the above points are fairly obvious, and already designed into Weather compensated systems, Under-floor heating systems and LST radiator systems and so on, there is an extremely important area, where both Low Flow Temperatures and a larger Temperature differential, can be incorporated to maximise on the Condensing Boiler efficiency –and overall system efficiency - namely Hot Water Service generation. Stokvis proposes that this can be best achieved with the Packaged Plate Heat Exchanger.
Since 1985, Stokvis have been the market leader in packaged plate heat exchangers and are now proud to be first to launch their STOKVIS ECONPLATE “C” SERIES Packaged Plate Heat Exchangers to be used in combination with condensing boilers.
Specifically designed to operate with lower primary temperatures provided by condensing boilers the “C series” Econoplates are available in three ranges - a total of some 50 units - outputs up to 742 KW.
The Units operate with a Primary flow temperatures of 70°C and achieve return temperatures of around the mid 40°C. Therefore the“C series“ contribute well to the efficiency of condensing boilers, and indeed, marry extremely well with the STOKVIS ECONOFLAME range of fully modulating, premix, gas fired, condensing boilers.
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In addition to the above the “C series” also incorporate the many long standing benefits of the Stokvis Packaged Plate Heat Exchanger, some of which are detailed below:
- Low water content – not losing heat to the plant room causing excessive boiler firing
- Fully modulating control valve – giving close control on heat input minimizing boiler firing and providing accurate control of HWS temperature
- Plate Exchanger – more efficient than coils and not subject to costly insurance checks and easy to expand duty with additional plates
- Water Temperature raised from 10°C to 60°C in a split second – no legionella potential
- Compact size – amazing output to size ratio - no wasted space helps keep plant room small
- Complete Package – Easy to install and service. Minimum on site installation and down time
The Econoplate C series units are designed to provide hot water instantaneously, without the need for storage, up to their maximum rated output. Where necessary they can be coupled to a buffer vessel for even greater outputs.
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