What
is portable air conditioning?
What are air purifiers?
What are fans?
What are evaporative coolers?
What are De-humidifiers?
What are Humidifiers?
What are the costs involved ?
PORTABLE (MOBILE) AIR CONDITIONERS
Portable air conditioners are the easiest route to true air
conditioning in the office or home. They can be installed
easily, connecting into a 13amp socket and are ready to use
immediately. Mobile air conditioning units work by taking
heat from a room and expelling it to the outside. The air
inside the room is chilled and re-circulated. There are two
main types of Portable units. Single unit (Monobloc) and split
systems.
Single Units (Monobloc)
These are instantly recognised by their exhaust hose, which
is used to expel the hot and humid air to the outside of the
room. Single units can cope with a wide range of standard
room requirements.
Spilt Systems
For larger rooms that have bigger heat loads split systems
are normally required. They are easily recognised by the separate
(condenser) box that needs to be placed outside of the room.
AIR PURIFIERS
Air purifiers simply do as the name suggests. These machines
purify the air we breathe. In today’s well built, insulated
and sealed buildings, tobacco smoke, odours, pollen, spores,
germs and other air-born impurities are becoming an ever-increasing
problem. The lack of controlled ventilation adds to this problem.
The energy efficient homes of today are so tightly sealed
against the elements that we breathe the same air over and
over again. Air Purifiers are designed to remove smoke, pollen,
dust, bacteria, and other irritating allergens from the air
helping people breathe more easily. An air purifier can be
a healthy addition to any home or office environment.
FANS
A fan does not actually lower the temperature of a room, it
simply creates wind chill. The spinning blades of a fan create
a breeze. The air moves across the skin and evaporates moisture
from the skin’s surface, making you feel cooler. Safeair
will occasionally recommend the use of a fan in conjunction
with a portable air conditioner to increase the 'throw' of
treated air.
EVAPORATIVE COOLERS
When water evaporates, ie. changes from a liquid to vapour,
an endothermic reaction takes place meaning that heat is drawn
from its surroundings. This process explains why you feel
colder when wet and is also the principle on which evaporative
cooling is based. These machines use evaporating cold water
to create a cool air flow. These units require that doors
and windows be left open to ensure that a good fresh airflow
from the outside can enter the room. The units do not drop
room temperature and a person must be in the airflow to benefits
from them. It must be noted that they do increase humidity,
hence the need for a lot of outside air to circulate into
the area to prevent excessive humidity.
DE-HUMIDIFIERS
Most people are familiar with the principle of condensation.
When air is chilled below its dewpoint temperature, moisture
condenses on the nearest surface. The process of cooling and
condensation dehumidifies the air. Excess moisture and condensation
can be a big problem but there is, however, a simple and effective
solution in a good quality dehumidifier.
Dehumidifiers use a refrigeration circuit to create a series
of chilled plates onto which moisture condenses before being
collected in a container or running to a drain. The resulting
drier air flow then passes over the warm side of the circuit
for re-heating before being returned to the room.
HUMIDIFIERS
Two main factors, the temperature and the relative humidity
of the air influence indoor air quality. A relative humidity
of 45% - 55% is considered pleasant and healthy. Heating systems
and dry winter air often combine to reduce indoor humidity
levels to below 25%. Dry throat, sore lips, and other uncomfortable
symptoms are often the result of low humidity.
Costs
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our Hire Tariff Sheet (pdf)
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our Sales Price Sheet (pdf)
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