to be positioned in the pressure bulkhead at the aft of the aircraft for example as shown in fig1 the the aft pressure bulkhead 100 also referred to as the rear pressure bulkhead is a component of all large commercial aircraft it is an airtight bulkhead located between the cabin 102 and the tail 104 of the aircraft its purpose is to seal the rear of the aircraft and thus maintain cabin pressure via a pressure dome 106 as shown in fig1 the aft pressure bulkhead 100 is a vital part of the aircraft and is generally present on all aircraft however although the pressure bulkhead 100 is necessary on the aircraft for safety and technical reasons in order to manage pressure and load there is also unused space 108 in the pressure bulkhead 100 illustrated by fig1 aircraft design has been such that a forward facing galley 110 is traditionally positioned at the aft of aircraft directly in front of the pressure bulkhead 100 this is in part in order to cover the pressure bulkhead 100 however the back walls 112 of these galleys have not monopolized on this unused space 108 it is possible to provide the heating and cooling generators 16 and components into space 108 and duct them heated or cooled air to compartments that may be positioned in the aft galley 110 the heat and or cooling generator 16 is generally associated with insulated.