Currently selected zone All Rooms (HVAC for zone All
Rooms)
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Some data such as DHW system, ventilation and
lighting can be defined either individually for each room in the zone, or the
same for all rooms in the zone. Use the radio button to define
Default data for rooms in the zone (all rooms will have the same
data) or Individual room data (data for each selected room can be different).
By clicking
Set all rooms to default, all rooms will
be set to the default data.
To save time when most rooms have the same data, but there are
some small differences, it may be useful to firstly set up the default data for
all rooms, then click the
Set all rooms to default, making all rooms
the same. Then selecting the required room and making the data changes can
define particular data that differs for individual rooms.
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DHW system
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Each room must be associated with a DHW system;
ensure that DHW systems have been set up as required using data on the
General
Tab. The length of DHW dead-leg pipe should be
specified for each room.
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Room based heat recovery
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Heat recovery for the room can be set up. Depending
on the type of HVAC system heat recovery is either specified at the zone level
or the room level.
- Heat
recovery – Depending on the HVAC system specified, heat recovery
can be defined by selecting the type of heat recovery.
- Seasonal
efficiency – If a heat recovery system is selected and the seasonal
efficiency is known, it can be defined, otherwise a default value will be used.
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Ventilation
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Depending on the HVAC system for the zone,
ventilation can be specified for each room.
- Ventilation
type - Either one is selected, Natural or Mechanical ventilation.
- Supply
specific fan power – The room based supply specific fan power (SFP)
can be specified, or a default value can be used.
- Mechanical
exhaust – The required
Air flow rate is specified.
- Exhaust
specific fan – The room based exhaust specific fan power (SFP) can
be specified, or a default value can be used.
- Scope of
extract system – This specifies whether the extract system serves a
single room or multiple rooms.
- Demand
controlled ventilation – Specifies demand controlled ventilation.
- Flow
regulation type – Specifies flow regulation type.
- HEPA
filters – If the room requires the use of high pressure drop air
treatment (including HEPA filtration) this can be specified. By default, this
value will be taken from the NCM database. If you manually override the
default, you may be expected to provide justification for this change to
building control.
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Lighting
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The amount of lighting energy is estimated by selecting the
Lighting design information available. If a full lighting design has been
carried out, the lighting total wattage per square metre is specified along
with the design illuminance (lux). If the type of lighting has been selected
but not calculated, specify the lighting lumens/circuit Watts. If no
information is known, select Lighting parameters not available and select a
lamp type. If there is display lighting which uses energy efficient lamps, the
luminous efficiency is specified. Air extract luminaries can also be selected.
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Lighting Control
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Manual, photo-electric and/or constant
illumination lighting controls can be specified. For photo-electric controls,
Switching or dimming can be used, with an optional back sensor. The type of
photo-electric sensor can also be selected. Occupancy sensing can be used by
selecting the type of occupancy sensor. Time switching can be used by
specifying the number of hours off and the fraction of the lighting that is
off.
If
Daylit areas have not been created for a
room but lighting controls have been specified, SBEMie can automatically
generate the
Daylit areas. If this option is not
selected, the area controlled so as to respond to daylight needs to be
specified.
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Night Cooling and Thermal Units
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The following can be specified if a night cooling strategy
operates in this room:
- Maximum
hours of night cooling per month – This is the maximum number of
hours per month during which night cooling is operating in the zone.
- Maximum
flow rate during night cooling – This is the maximum air flow rate
in the zone, in (L/m²s) of floor area, during the operation of night cooling.
- Specific
fan power - If the specific fan power is known it can be entered
here.
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Solar Collectors
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If the room is served by solar collectors then
they can be assigned from any already defined solar collectors (defined in
tab).
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