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UNIT 4: ENVIRONMENT MANAGEMENT SYSTEMS
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BEMS allow for the use of occupancy-linked control systems, which are very useful
for hospitality businesses. These include:
• LINK PANELS AND KEY FOB PANELS
These allow for power in rooms to be activated to set temperatures only
when occupied. The link panel is activated when the key is removed
from the key holder at reception or the control area, while the fob panel
is activated when the key is placed in the key holder inside each room.
Both systems require the installation of TRVs.
• INFRA-RED OCCUPANCY DETECTORS
These systems turn on units when motion is detected and allow
for individual temperature control by the occupant. If no motion is
detected, the system holds the set temperature for a preset time (5-50
minutes) before switching back all units to background levels.
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Combined Heat and Power (CHP)
CHP systems generate electricity and channel the heat generated in the process
(normally regarded as waste) to use for water or space heating. As both electricity
and heat are generated at the same time, the efficiency of CHP systems can be as
high as 80-90%.
CHP is most suited to properties that require water and space heating for longer
periods of the year. The UK Department of the Environment, Transport and the
Regions reports that around 17% of total CHP installations in the UK are in hotels.
Good Practice Tip
CHP systems do not always bring financial returns. Specialist advice is needed to
evaluate the feasibility of this option.
Replace Older Equipment
Older boilers and chillers are more energy-intensive than newer models. Replacing
equipment over 15 years old will reduce energy bills by 10-15%. If equipment is
less than 10 years old, investing in controls may prove more economical.
Renewable Energy Options
Renewable energy is a source of energy that can be produced at the same rate as
or faster than it is consumed, and therefore does not deplete natural resources.
Renewable energy technology for tourism and hospitality includes solar water
heating, photovoltaics (PV), mini-hydro systems, wind turbines, bio-fuels and
geothermal heat pumps.
The use of renewable energy will be discussed at length in Unit 5.
Wall, Roof and Floor Insulation
Around 80% of cooling and heating is lost through external walls. In conjunction
with heating/cooling controls, wall insulation also reduces condensation and
damp. Many recycled and more environmentally-preferable insulating materials
are available and should be given preference. Formaldehyde should be avoided.
The types and methods of roof insulation depend on the roof pitch (sloping or flat),