HOTELS, LEISURE & HEALTHCARE
The first consideration when selecting
Justin Jearum, commercial product engineer at Alpha Heating Innovation, discusses appropriate heating
systems for high demand environments such as hotels, hospitals and leisure centres, where there can be
significant fluctuations in daily demand.
JULY 8 | BUILDING PRODUCTS
a new boiler for high demand
environments is the required kW output
of the heating system. Buildings can
have a range of demands to fulfil, dependent on
age, usage, hot water requirement and radiator
count. In comparison with the average home, a
commercial site can require a boiler with multiple
times the kW output and so it is essential to
calculate the individual needs of the building and
its users sufficiently.
Initially, it is useful to establish whether the
previous system adequately heated the building
and whether the use of the building has changed
since that installation. Consider any extensions to
the site, as the addition of any bathrooms or even
outputs should have a useful efficiency of no
radiators will have increased the output required.
less than 86% when working at maximum load
It is also important to factor in thermal losses,
(100%) and a useful efficiency of no less than
especially with older buildings that are more
94% at part load (30%). The directive effectively
susceptible to energy waste, as all newer locations
removed all non-condensing boilers with an
should have been designed for optimal efficiency.
output of less than 400kW from sale; therefore, it
Finally, always allow for the possible demand
is important to keep this in mind if an end client
extreme weather conditions can have.
is hoping to replace with a like-for-like model.
If the structure or use of the building remains
Once the kW output requirement has been
unchanged, like-for-like installations must still be
calculated, the available space and boiler room
carefully considered due to changes in legislation,
accessibility need to be considered. The age of
such as the ErP directive, which set the standard
the building will be a significant factor, with
on efficiency and legal output. Under this
small, cramped basement boiler rooms a regular
directive, as of September 2015, all boilers with
outputs from 70kW up to and including 400kW Continued on page >>>