When precise and reliable temperature control is needed in addition to heat rejection, typically in applications where temperatures can adversely affect electronic components, variable conductance heat pipes can be a cost-effective solution. Aavid’s variable conductance heat pipes (VCHPs) control the evaporator temperature change by altering the amount of condenser area available. Decreasing ambient temperatures cause the vapor pressure of the working fluid to decrease and the volume of Non-Condensable Gas (NCG) to increase, lowering the condenser area. The result is an efficient cooling method with no moving parts.Aavid’s variable conductance heat pipes operate efficiently within ambient temperatures ranging from -5° C to 65° C and work in conjunction with copper plates that can be as thin as 0.2 inches. They are compatible with numerous heat pipe assemblies.