The Importance Air Exchange in Buildings
and commercial heat recovery ventilation systems complying with building
regulations as well as providing up to 93% heat recovery and controlling
the condensation levels.
Room Air Environment in Buildings:
In Japan, the "Building Management Law", a
law concerning the sanitary environment in buildings, designates 11
applications including offices, shops, and schools with a total floor
area of 3,000m2 or more, as buildings. Law maintenance and ventilation,
water supply, discharge management according to the Environmental
Sanitation Management Standards is obligatory.
Effect of Air Contamination in Buildings:
Dirtiness of interior, New ceilings, walls and
ornaments will turn yellow from dust and tobacco smoke tar in 1 to 2
The legal standards for ventilation differ according
to each country. Please follow the standards set by your country. In the
U.S., ASHRAE revised their standards in 1989 to become more strict. In
Japan, regulations are set in the "The Building Standard Law of
Japan Enforcement Ordinance", the so-called "Building
Management Law" for securing a sanitary buildings environment.
According to the "Building Standards Law", a minimum of 20
m3/h per occupant of ventilation air is required.
Comparing of Ventilation Methods:
There are two main types of ventilation methods.
Centralized Ventilation Method: Mainly used
in large buildings, with the ventilation air intake being installed in
one machine room. For this method, primary treatment of the ventilation
air, such as energy recovery to the intake air and dust removal, is
performed via distribution to the building by ducts.
Independent Zoned Ventilation Method: Mainly used in small to medium sized buildings, with
areas being ventilated using ventilation air intake via independent
ventilation devices. The use of this method has recently increased as
independent control is becoming more feasible.
Residential, commercial and industrial heaters. Portable and fixed space heaters with something for everyone from the 500W to 100kw. We have one of the most extensive heater selections from patio heaters, fire places, propane heaters, oil filled radiators, fan heaters, oil heaters, gas heaters and infrared.
mounted air conditioning is the most popular type of air conditioning
system. Versatile and easy to install, most wall air conditioning units
have a filter which destroys funghi, collects duct in the air, bacteria
and viruses which provides healthy clean air for the occupants. Modern
wall air conditioning units have Innovative inverter
compressor designs and the ozone friendly R410A and R32
refrigerants combined with low noise air movement fan arrangement. The
result is a quiet, high performance cooling and heating system,
with advanced electronic controls for maximum comfort, controllable and
Sales Installation and Service
UK: +44 (0)1234 841221
Orion Air conditioning and refrigeration ltd. All rights reserved
Last updated - 10/03/2019