I am not real familiar with Absorption Refrigeration...only Vapor Compression systems. On my RV, i can remove an exterior panel that exposes the backside of the Refrigerator with the Absorption components in clear view (except the Evaporator of course). The Refrigerator is a 3-way : Either Propane, 115 v. electric heater(s), or 12 vdc heater(s). There was a very minimal amount of insulation around the Generator/Boiler section so i added alot more insulation . My question is: Which other components or tubing can i add Insulation to that would enhance the operation of the Refrigeration Cycle ??