Forane^® Technical Support

Bubble Point (Saturated liquid Temperature) Dew Point (Saturated Vapor Temperature) Fractionation       Glide       Normal Boiling Point (NBP) Abbreviations

The temperature (for a given pressure) at which the liquid of a refrigerant blend (any 400 or 500 series refrigerant) begins to evaporate or boil. This is similar to the saturated liquid temperature of a single component refrigerant. The temperature (for a given pressure) at which the vapor of a given refrigerant blend (any 400 or 500 series refrigerant) begins to condense or liquefy. This is similar to the saturated vapor temperature of a single component refrigerant. Fractionation - The change in composition of a refrigerant blends (any 400 or 500 series refrigerant) when it changes phase from liquid to vapor (evaporation) or from vapor to liquid (condensation). This behavior in blends explains the permanent changes to refrigerant composition causing the blend to deviate outside the tolerances of the designed composition, due to vapor charging or leaks in a refrigerant system. The difference in temperature between the evaporator outlet and inlet due to fractionation of the blend. Theoretically, this can be calculated by fi nding the difference between the dew and bubble temperatures at constant pressure. Actual measurements may differ slightly depending on the state of the liquid refrigerant at either end of the evaporator (or condenser). Pressure losses through the evaporator may also affect glide.  The temperature at which a given refrigerant begins to boil while atmospheric pressure (14.7 psia). AB - alkylbenzene GWP - global warming potential MO - mineral oil ODP - ozone depletion potential OEM - original equipment manufacturer POE - polyolester PAG - polyakylene glycol