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BEAM P
LUS FOR
N
EW
B
UILDINGS
I
NDOOR
E
NVIRONMENTAL
Q
UALITY
(I
EQ
)
V
ERSION
1.2
I
EQ
13 T
HERMAL
C
OMFORT IN
A
IR
-
CONDITIONED
P
REMISES
Copyright © 2012 BEAM Society Limited. All rights reserved.
Page 168
6
IEQ
6.5
T
HERMAL
C
OMFORT
I
EQ
13 T
HERMAL
C
OMFORT IN
A
IR
-
CONDITIONED
P
REMISES
E
XCLUSIONS
Buildings where air-conditioning is provided by window units or split
units.
O
BJECTIVE
Ensure that the air-conditioning system can provide the stated design
conditions in occupied spaces under changing load conditions.
C
REDITS ATTAINABLE
2
P
REREQUISITES
None.
C
REDIT REQUIREMENT
a) Temperature
1 credit for sustaining the air temperature at the design value within
±1.5
C when the air side system is operating at steady state under
normal occupied periods.
b) Room air distribution
1 credit where room air diffusers satisfy the Air Diffusion Performance
Index.
A
SSESSMENT
The Client shall provide evidence in the form of a report prepared by a
suitably qualified person detailing the design criteria with respect to
thermal comfort conditions for all types of premises included in the
building, and the results of the measurements in the specified sample of
premises.
a) Temperature
The measurement locations shall include at least one representative
sample of each type of premises (occupied spaces) as defined by the
type of HVAC system used, design occupancy density, nature of usage,
zoning, etc. The main physical parameters of the indoor climate (air
temperature and relative humidity) are undertaken under normal
occupied periods. The results shall demonstrate compliance with the
prescribed design criteria within the prescribed limits, for a minimum of
90% of the prescribed locations. The measurement shall be made with
reference to the current EPD’s IAQ certification scheme. The sensors
used in the measurement survey shall have an accuracy that complies
with ASHRAE 55-2004 [1], ISO 7726 [2] or equivalent.
b) Room air distribution
The measurement locations shall be as for a). It is acceptable to
demonstrate the credit compliance by either calculation or by in-situ
measurements.
B
ACKGROUND
The HVAC system should be able to maintain room conditions (within
acceptable tolerances) under normal occupied periods. Measurements
under such circumstances can demonstrate compliance with the
operating requirements.
1
American Society of Heating, Refrigeration and Air-conditioning Engineers. ASHRAE 55-2004: Thermal Environmental
Conditions for Human Occupancy. Atlanta 2004.
2
International Standard Organization. International standard 7726, Ergonomics of the thermal environment — Instruments
for measuring physical quantities. 1998.