Telecoms company 186k Limited has awarded
a multi-million pound contract to Lattice Energy Services in
partnership with Brotherhood Aircogen. The partners are to provide
secure, cost effective energy to new 'telehouses' - data and
telecommunications switching centres - at Hemel Hempstead and Bristol
in the UK.
Based on Aircogen Nimbus CHP (combined
heat and power) equipment, close-coupled to absorption chillers, these
systems set new standards of energy efficiency and reliability.
Telehouse equipment requires electrical
energy and air conditioning (cooling) in broadly equal measure. This
is normally provided at poor overall energy efficiency because of the
high energy cost of electricity-based air conditioning.
However, the combined cooling and power (CCP)
system being installed for 186k eliminates the majority of the air
conditioning power needs, reducing the overall energy demand by around
22 per cent. The ratio of cooling and power produced by CCP very
closely matches the site requirements.
Security and reliability of power supply
and air conditioning is vital for telehouses in order to maintain
their round the clock, 365 days per year operation. The level of power
supply reliability achieved by the LES/Aircogen system exceeds 99.999
per cent. The use of additional cooling capacity provides similar
assurance of the maintenance of building and equipment temperatures
through climatic extremes.
The exceptional environmental performance
of the CCP system, which reduces CO2 emissions by over 20 per cent,
secures a number of tax advantages including Climate Change Levy
exemption and enhanced capital allowances. Together with the avoided
cost of standby generation and electric air conditioning, these
provide significantly lower lifetime costs for the installed system.
Lattice Energy Services is managing
installation of the CCP systems at Hemel Hempstead and Bristol which
it will own and operate under a long term energy supply contract with
Brotherhood Aircogen is designing and
building the CCP systems and will ensure their reliable, efficient and
cost effective long term operation.
Both telehouses are scheduled to enter
commercial operation by mid-year and will be the first CCP sites in
the UK telecoms sector.