Heat networks
Spirotech goes the ‘extra mile’ to meet customer expectations
A District Heating system serving 5,000 homes in St. Ann’s, Nottingham is benefiting from bespoke filters manufactured by Spirotech UK
N
CC Enviroenergy approached a number of UK manufacturers to quote on the production of five custom-made demountable
dirt separators for five of the district pumping stations serving properties in the area, but only Spirotech was prepared to meet the specification requirements. Enviroenergy, a department within Nottingham City Council’s Environment & Sustainability division, is responsible for delivering the heat and power to homes and businesses across the city. Within the District network are several pumping stations and two core operating systems – a primary distribution network that operates up to a maximum of 140 °C and 11 bar; and a secondary distribution system, which pumps the water around the residential area at 85-
88°C, in the region of 7-8 bar. =The NCC Enviroenergy Plant & Network Projects Engineer, commented: “The primary flow filters in each substation had reached the end of their operating life and required replacing. However, most of the dirt separators of this type are only rated for 10 bar and a maximum operating temperature of 110°C. “Although we contacted several UK manufacturers
to provide replacement filters for the primary network, only Spirotech responded developing five purpose- built demountable units, capable of operating at temperatures up to 140°C and 11 bar.’’
The higher pressure and higher temperature
units comply with the PSSR (Pressure System Safety Regulations) and the PED (Pressure Equipment Directive). Spirotech area manager Dave Goodyer said: “As a manufacturer we aim to go beyond the call of duty and this was a good example of this. NCC Enviroenergy required demountable units so they could be taken apart for Statutory inspections and cleaned. As we don’t produce top demountable units in our SpiroTrap DN80 and DN100 ranges, we had to modify them to accommodate the required specification. “Today’s energy-efficient heating and cooling
systems can only provide optimal performance with dirt free water. Magnetite in particular leads to greatly reduced energy efficiency and this will, of course, ultimately lead to increased running costs. “Our SpiroTrap range is suitable for various
temperatures and pressures and separate and remove very small particles from 5um (=0.005 mm) upwards. The dirt can be drained whilst the system is in operation and only takes a few seconds – it’s not a dirty job compared to a filter solution.”
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