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Home Page > Information > Hangar Options >  Heating and Insulation            | Back

Aircraft Hangar Heating and Insulation Options

Hangars do not have to be regarded as heated buildings, and if used only for aircraft storage may not need insulation at all.

Hangars in any climate will benefit from roof insulation, as it will reduce condensation, reduce temperature variations and cut down on the noise from rain and aircraft. In cold climates wall insulation will increase comfort within the hangar.

In hot climates using a double skin roof will reduce the comfort inside the hangar by reducing radiant heat from the roof, especially if the roof outer skin is white or very light coloured, and the inner roof liner is white, reducing radiation; there does not seem to be a great advantage in using double skin on the walls (except possibly on the south wall in the northern hemisphere or the north wall in the southern hemisphere. What is more important is correct ventilation (see below). Only if the hangar is to be air-conditioned is there any sense in insulating the whole envelope, and then the maximum value should be used, a U value of say 0.25W/degC/m2 on the roof, and 0.35 on the walls, should be used. But the air-conditioning will require huge energy input and is not advised.

 

Insulated Cladding

Double skin with fibreglass insulation

 

Liner panel separated from outer sheet by galvanised steel spacer system. Insulated with glass fibre or mineral wool where fire resistance is needed.

60mm fibreglass U value = 0.6 W/m2K

83mm fibreglass U value = 0.45 W/m2K

100mm fibreglass U value = 0.35 W/m2K

160mm fibreglass U value = 0.25 W/m2K

Laminated fibre glass quilt insulation with decorative facing

Fibreglass insulation quilt with a white reinforced foil or a PVC skin laminated to under face, which forms the internal lining to the building. A cost effective choice for insulating storage buildings.

Composite sandwich panel

The outer profiled sheet is normally galvanised steel substrate, colour coated with Plastisol, PvF2, polyester or self galvanised finish as required. The insulation core is an integral closed cellular rigid CFC free isocyanurate or urethane foam with an average density of 35 kg/m3. The inner embossed and ribbed lining sheet is normally 0.4mm thick galvanised steel substrate which may be finished with an off-white colour coat if required. Other insulation options are available.

Many types are not approved by insurers and many types do not give fire resistance. Please ask for advice.

We advise you stop the wall cladding 2.1m from the floor.

 

Hangar Heating and Air Conditioning

On large open buildings such as hangars it is a bad idea to try and heat / cool the air volume. Use focused radiant heaters, mobile local heaters or coolers and ducted fans from the roof space. Since cold air is heavier than hot air, and if a cool working space is needed in a limited area at ground level, then partitioning off an area of floor and having a modest mobile air conditioner will be effective.

 

Hangar Ventilation

Ventilation - In tropical countries, hangars need ventilation. This is best provided by a ridge vent, coupled with ventilation at low level, preferably in the bottom 2.1m of the masonry wall. The efficiency of such ventilation depends on the 'chimney height', the height difference between the air intake and the air outlet. The vent does not have to be large, but it has to be able to bleed away the hot air at the peak of the roof: without venting, this hot air will become hotter and take up a bigger volume as the day goes on, until it envelops the people at ground level, and at the same time allows the inner skin of the roof to become hot and radiate more heat inwards. In countries which are susceptible to typhoons or hurricanes (or any other similar tropical storms) the ridge vent should not be built right up to the ends of the hangar but stop 5m short. The REIDsteel ridge vent gives suction under all normal wind conditions, so helps the air flow caused by convection. In such hurricane blown locations, the negative pressure inside helps to prevent sheeting ripping off. In Hurricane areas, or sandstorm areas, it is a good idea to be able to close the low level inlet vents on the windward side of the hangar to prevent water or sand penetration.

 

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