Home' Australian Hotelier : AH OCTOBER 2017 Contents 16 | OCTOBER 2017 AUSTRALIAN HOTELIER
PREPARING FOR SUMMER
Energy costs are increasing and are
putting stress on businesses across
many industries. However hospitality
facilities typically have the potential
for a 20-30 per cent reduction in energy
consumption through energy efficiency
measures, ranging from 'low-hanging fruit'
tweaks to air-conditioning through to
investment in life cycle technology upgrades.
Here are some strategies typically applicable to
the local pub that can help to save energy costs:
• Outdoor heating. Outdoor heating
is typically manually controlled with no
thermostat and can account for 10-20 per cent
of a pub's energy consumption. Fuel-switching
between electricity and gas can provide
financial savings, but most important is to
incorporate intelligent controls to the operation
of these systems, via thermostats, zone controls
and time schedules.
• LED lighting. If your pub is not using LED
lighting, it should be. LED luminaires with
superior efficiency are available to replace most
halogen, fluorescent or metal halide lighting
and they can do so while still satisfying the
need for aesthetic appeal. Indeed, aesthetics
can be enhanced with LEDs via the ability
to provide various and alternating colours.
LEDs also often offer more control than other
luminaires, lending themselves well to daylight
dimming and occupancy controls. Another
major advantage of LEDs is their far superior
• Solar PV. The trend of increasing
electricity costs and decreasing solar costs has
served to provide significant improvement in
the payback for solar power systems over the
past few years. If you're lucky enough to own
your roof space and your electrical profile
isn't solely constrained to the evenings, then
a solar photovoltaic (PV) system may provide
• Power factor correction. The 'power factor'
of a site is a measure of electrical efficiency; the
ratio of real power (kW) to 'apparent power'
(kVA). A power factor of 1.0 is ideal and
can be achieved (almost) with a power factor
correction unit. If your electricity bill notes a
charge against a kVA figure then your site may
have the potential to reduce energy bills via
power factor correction.
• Maintenance. As a general rule, if
equipment and lighting is looking old and
dodgy, it is not likely to be operating efficiently.
This is particularly true of air-conditioning
and refrigeration equipment. Routine
maintenance including cleaning filters, cleaning
condenser coils and re-charging refrigerant can
significantly improve the efficient operation and
longevity of these key infrastructure items.
• Air-conditioning controls. Air-conditioning
can be expected to consume approximately
50 per cent of your pub's energy consumption
and the set-points and time schedules that
users apply can have a significant impact on
their consumption. Systems should be set to
appropriate temperature set points with care
not to inadvertently create a potential for
conflict between adjacent units by setting them
with different set points. The internal controls
on air-conditioning systems can also have
an effect; most importantly the 'deadband'
between heating and cooling should not be too
narrow in order to avoid oscillation between
the two modes. For larger items of equipment,
logic controllers can be optimised for improved
economy cycle and compressor control.
• Life cycle refurbishments. Every life
cycle replacement presents an opportunity
for efficiency upgrade. For air-conditioning
systems this means looking to incorporate
economy cycle, variable speed fans and
variable speed compressors. For refrigeration
systems you should request digital scroll
compressors, variable speed fans, inbuilt
floating head and suction pressure control,
electronic expansion valves and intelligent
electric defrost controls.
Engaging an energy efficiency consultant
for an energy audit of your pub will help to
identify which measures are right for your site,
how much they will cost and importantly how
much they will save.
COOLING YOUR VENUE IN SPRING AND SUMMER IS BOTH INEVITABLE AND AN EXPENSIVE UNDERTAKING.
MATT HOOGLAND, ENGINEERING SERVICES AND DEVELOPMENT MANAGER AT ENERGY ACTION SHARES SOME
POINTERS AS TO HOW TO REDUCE YOUR ENERGY COSTS.
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