Refrigeration Applications: Secondary Coolants
ASHRAE defines secondary coolants as fluids that either lose or gain temperature without a change of state. The chemical industry defines these fluids as heat transfer fluids (HTF). Fluids that may be applicable to refrigeration systems typically are used at 15F to 140F (9C to 96C).Citation: ASHRAE Journal, Vol. 46, No. 6, June 2004