06-06
ventilation shall be based on any one of the following
considerations, and the maximum amount, thus derived shall used.
For the radiant panel cooling system, the manufacturer's
recommendation shall also be used as an additional consideration.
2. When an all air system is used, the outdoor air is mixed with the
return air at the unit, and since the distribution of the supply
air is done on the basis of the cooling load requirements, the
spaces with greater cooling requirements will, naturally, receive
more outdoor air.
It is, thus, recognized that the uniform
distribution of outdoor air is inherently difficult with an all
air system.
TABLE 2.2
Patient Bedrooms:
2 Air Changes Per Hour, or
10 Air Changes Per Hour of
Make-Up for the Adjoining
Toilets/Bathrooms, or
30 CFM Per Patient, or
Minimum 50 CFM Per Outlet
Offices (Private):
1 Air Change Per Hour, or
20 CFM Per Person, or
Minimum 50 CFM Per Outlet
Lounge/Waiting Areas:
15 CFM Per Person, or
Minimum 50 CFM Per Outlet
NOTE: The computation of the outdoor air shall be based on the above
mentioned considerations, but shall not be less than 15% of the
supply fan air volume.
2.5 EXHAUST AIR REQUIREMENTS (MECHANICAL COOLING)
The areas listed in table below shall be fully exhausted outdoors.
The exhaust air requirements are:
TABLE 2.3
MINIMUM DESIGN
AREAS
EXHAUST AIR CHANGES/HR
Bathing Facilities
10
Bathrooms
10
Janitor Closets (HAC)
10
Kitchen
SA+15%
Locker Rooms
SA+15%
Mechanical Equipment Rooms
o
Fan Rooms
12
o
Rooms with Steam System
25
6
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