Airport Terminal Hvac Design Guideline
Airport Terminal Hvac Design Guideline
Airport Terminal Hvac Design Guideline
GUIDELINE
1. HEAT LOAD
Outdoor Condititons (Source - Hvac Specs 1 April 2015 )
Latitude
29.22 North
Longitude 47.98 E
Altitude
55 M
Summer temperature: 48 C db, 25.5 C Wb
Winter temperature: Dry bulb: 4.5 C Wet bulb: 2 C
Average daily temperature range: 13.33 C
During concept stage, it is very difficult to say the cooling load figures. Based on
area, and activity, the tentative idea have been established. The calculation is
required after architecture specify the shape and dimension etc. The cooling load
will be within 2000 2500 TR.
The following areas have to be looked into:
3. MEW REQUIREMENTS
Kuwait airport is 10 km far from sea and a coastal region
6.1.1
Walls
and
Roofs
Table 6.1 provides a list of the maximum allowable overall heat transfer coefficients
(U) for variety of wall and roof constructions and their external color.
a) Exposed floor: Exposed floors in multistory apartment buildings or similar
constructions shall not have a U value of more than 0.568 W/(m2 .K) (0.1 Btu/(h.ft2 .
F)).
chillers
for
all
interior
Kuwait
operating
of 500 RT
well as for
the
of Kuwait
operating
of
1,000
Water-cooled
shall be used
projects in the
region
of
with
total
plant capacity
and above, as
all projects in
coastal region
with
total
plant capacity
RT and above
Projects
with
partial
occupancy
and
cooling
load
capacity
in
the
range
from 500 to 1000 RT in the
coastal region shall use air cooled chillers. The system type (air or water cooled)
shall be based on the diversified cooling load before applying partial cool storage.
All buildings shall use a CRU (such as rotary-wheel, etc.) when:
1. The recoverable exhaust air quantity is equal to or more than 2,000 CFM (940 l/s)
for all buildings in the coastal region,
2. The recoverable exhaust air quantity is equal to or more than 3,000 CFM (1410
l/s) for buildings in the interior region. The CRU shall have a minimum efficiency of
75% for all buildings in the coastal region as well as in buildings with high
ventilation rates (buildings peaking at wet bulb prioritization) in the interior region.
For toilets use heat pipe recovery ahu units
Thermal Storage
Cool storage (ice, water or eutectic) is encouraged and recommended for partially
occupied buildings with plant production capacity of below 500 RT. However, for
buildings with plant production capacity of 500 RT and above, it is mandatory to use
a thermal storage system. The capacity of such system shall be able to provide at
least 25% of the total plant production capacity for 4 hours during the peak load
period from 12 pm 4 pm with figure of merit (FOM) of 0.85 or above, (i.e.,
0.25x4xX, where X is the plant production capacity after applying diversity). For
governmental buildings, the cool storage capacity shall be able to provide at least
50% of the total plant production capacity for the same period. The consulting office
shall provide a daily building load profile that forms the basis for his design strategy.
All air conditioned spaces shall have a minimum quantity of ventilation air that is
the highest of the following values:
1. ASHRAE 62.1 Standard (Ventilation for Acceptable Indoor Air Quality)
2. 0.250 ACH for pressurization + exhaust air from kitchens, toilets and
other areas.