rent or buy.....
Different Types of Unit
air conditioners can be divided into two groups based on how the
cooling circuit functions !
to Air: Warm air from the room passes over the evaporator
which will then release cold air. The captured heat is given to
more air passing over the condenser and is expelled outside the
room. Most air to air air conditioners do not need any intervention
from the user, nor do they have scaling problems, or stagnant
to Water: The air is chilled by passing directly over the
evaporator, but instead of using only air to transport the captured
heat from the condenser, water is also used to cool the condenser.
The use of this product is limited as the water tank needs to
be filled The operating time is reduced to between 4 and 6 hours.
units also come in two styles
Monoblocs: This is a one piece
unit working on an air to air principle. Warm air from the
room passes over the evaporator and is chilled before being
blown back into the room. More air passing over the condenser
absorbs the captured heat and it is expelled outside the room
via a hose. This hose must be vented through an outside wall
or window using the socket provided. As a temporary instant
solution, a flattened adaptor is included so that the hose
can be fitted through a partially opened window or door. Extra
exhaust sockets can be installed, so that your air conditioner
can be moved between rooms.
Split units: Here the condenser
and the evaporator are split into two units and work on an
air to air principle. Warm air is drawn into the unit and
cooled by being passed directly over the evaporator before
being blown back into the room. The split unit has a greater
efficiency because the captured heat is circulated through
the condenser situated outside.The separate external (condenser)
box is connected to the main inside unit by means of refrigerant
lines. These lines can be disconnected, so they can be passed
through a hole in the wall, about the size of half a brick
before reconnecting. The external box can be placed either
on the ground outside, a window sill or balcony, or be hooked
on straps over the edge of a window frame or attached to the
outside wall on the bracket supplied. However, the unit is
less mobile and has to be near a window or other outside opening.
the right unit
UK there are two ways of measuring the cooling performance of
air conditioners BTU and Watts. All air conditioners also have
a dehumidification function which is measured by the number of
litres of water per hour that can be extracted from the air.
can work out your BTU requirement by measuring the size of
the room you need to cool. The effectiveness of the unit is
dependent on various other factors such as the level of sunshine,
the level of insulation, ventilation, the number of people
and the amount of electrical equipment in the room. To work
out your cooling requirement, measure the cubic capacity of
the room you wish to cool. Average ceiling height is 2.75metres.
Width and length can be measured by pacing. Then multiply
the figure cubic feet by 4 for BTUs and cubic metres by 40
room size is 8 x 16 x 12 1536 cubic feet. 1536 x 4 =6144BTU
room size is 2.5 x 5.0 x 3.7 - 46.25 cubic metres
46.25 x 40 =1850Watts
measurements account for a room with three or four people, a PC
and a photocopier. For each extra person or PC add 120 Watts.
As a sirnple
guide to your requirements just calculate the square footage of
your room and refer to the price
make installation of a portable air conditioner much easier and
are essential if you wish to have a Split unit.
the maximum hose length is 3 metres but the recommended length
is just 1 5 metres. In the absence of a window, you may duct the
hose into a suspended ceiling providing you have at least a 12"
units generally have a maximum umbilical cord length of 2m. The
external condenser unit will either sit on a window !edge or hang
outside on the supplied hook however, the window has to have an
opening wide enough so that the condenser unit can be passed through
our units work from a standard 240 V, 13 amp socket (except model
of any of our portable units is very simple. Just place the hose
for a Monobloc or the condenser for a Split unit, outside the
room and then switch on. If you are ducting to a suspended ceiling,
then simply push the hose into the void. For maximum efficiency,
avoid siting your air conditioner in the following areas:
direct sunshine, or near a heat source
a mezzanine floor where the cold air will fall to the ground
air-to-air Our range of air to air machines is suitable
for all types of domestic and commercial applications. All
the units work by expelling hot air through an exhaust duct,
similar to a tumble drier. These compact units can cool areas
of up to 18sq. m and can be simply wheeled into position and
switched on. All units can be ducted into a ceiling void if
for where there is restricted window access we recommend our
split range of Portable Air Conditioners. The separate condenser
unit is hung outside a window providing maximum cooling comfort
inside. The split range covers areas up to 34sq.m, again the
units are simple to operate
industrial range of Portable Air Conditioners can cool areas
of up to 79sq.m. They are ideal for spot cooling personnel,
equipment or production processes with maximum efficiency.
Easy to install, they can be ducted into a false ceiling or
through a window The industrial range have flexible cold head
ducts that direct the high volume of refrigerated air exactly
where it is needed.
can I use a mobile?
are perfect for the home and office. They need no major installation
and connect into a normal 13 amp socket.
do I work out which air conditioner I need?
power of air conditioners is measured in Btus orWatts. As a rough
guide, Multiply L x W x H of the room. If in feet x 4= Btu/h required.
If in metres x 40 = watts required. Allow for extra heat gain.
See room sizing guide.
cold can I make a room?
are limits to how cold the room temperature can be made. On most
machines this is around 21°C.
much does an air conditioner cost to run?
unit air conditioners have an input power of below I kw per hour,
therefore the cost to run on full power would be about 6 pence
per hour. Split systems have inputs around 1.3kw per hour so would
cost in the region of 9 pence per hour to run on full power.
does the heat go?
units actually take heat from the room and expel it to the outside.
Single units do this by means of the I metre flexible hose. Split
units discharge the heat via the external condenser unit.
if l buy an air conditioner smaller than is needed?
heat load in a room is greater than the unit's cooling capacity
an air conditioner will be acting as a comfort cooler or spot
cooler, taking heat out of the room but not actually reducing
Refrigeration, Gordon House, Dale Street, Corby, Northamptonshire,
NN17 2BQ UK