Ventilation Standards In Each Country - Mitsubishi Electric Lossnay LGH-15RX3 Technical Manual

CHAPTER 10 G Ventilation Standards in Each Country

1. Ventilation Standards in Each Country

1.1 Japan
Table Summary of Laws Related to Ventilation
Item
Acceptable Range
Related Laws
Law for Maintenance Buildings of at least
of Sanitation in
3,000 m
Buildings
least 8,000 m
Buildings with
requirements for
ventilation equipment
1) windowless rooms.
2) rooms in theaters,
The Building
movie theaters,
Standard Law of
assembly halls, etc.
Japan
3) kitchens, bathrooms,
etc.
Rooms with equipment
or devices using fire.
Offices where workers
Industrial Safety and
work.
Health Act
(Office sanitation
regulated standards)
114
Room Environment Standard Values
If a central air quality management system or
mechanical ventilation equipment is installed, comply
with the standard target values shown in the table below.
Impurity volume of less than 0.15 mg per 1 m
floating particles
CO rate
2
(for schools, at
CO
2
)
Temperature
Relative humidity
Ventilation
Central air quality management system ventilation
capacity and characteristics
Effective ventilation capacity V
Af: floor space (m
Characteristics: Generally satisfy the table below.
Impurity volume of less than 0.15 mg per 1 m
floating particles
CO rate
CO
Temperature
Relative humidity
Ventilation
For general ventilation, the effective ventilation area
opening is at least 1/20 of the floor space and the
ventilation equipment installed gives a CO density of
50 ppm and CO
central air quality management system or mechanical
ventilation equipment is installed, comply with the
standard target values shown in the table below.
Impurity volume of Air (1 atmospheric pressure, 25°C)
floating particles
CO rate
CO
Air flow in room
Heat and humidity
conditions
of air
Less than 10 ppm. (Less than 20
ppm when outside supply air has
a CO rate of more than 10 ppm.)
rate Less than 1,000 ppm.
2
1) Between 17°C and 28°C
2) When making the room
temperature cooler than the
outside temperature, do not
make the difference too great.
40% - 70%
less than 0.5 m/sec
20Af/N(m
2
), N: floor space occupied by one person
of air
Less than 10 ppm.
rate Less than 1,000 ppm.
2
1) Between 17°C and 28°C
2) When making the room
temperature cooler than the
outside temperature, do not
make the difference too great.
40% - 70%
less than 0.5 m/sec
density of 5,000 ppm or less. If a
2
less than 0.15 mg per 1 m
Less than 10 ppm. (Less than 20 ppm
when outside supply air has a CO
rate of more than 10 ppm.)
rate Less than 1,000 ppm.
2
Air speed in room is less than
0.5 m/s, and air taken into the room
does not blow directly on or reach
specific workers.
Heat between 17°C - 28°C
Relative humidity 40% - 70%
Reference pages
Applicable buildings are
buildings designed to
serve a specific purpose.
See page 123 for details.
3
Applicable buildings are
buildings with
3 requirements for ventilation
)
equipment. See pages
115, 116 for details and
valid ventilation capacity
3
calculation methods.
See pages 123, 124 for
details.
3
of air