Abstract: A heat transfer oil boiler system to minimize heat loss and prevent heat transfer oil from deterioration due to temperature fluctuations includes a high-level tank disposed with a vent, a transfer oil buffer, and an oil-gas separator; the heat transfer buffer includes one or more oil storage unit containing a chamber within; the heat transfer buffer is disposed between the high-level tank and the oil-gas separator; an oil inlet pipe and an oil outlet pipe for directing oil to and from the oil storage unit, respectively, is disposed in the upper and the lower chamber.

Abstract: A heat transfer oil boiler protection to minimize heat loss and prevent heat transfer oil from deterioration includes a high-level tank disposed with vent and an oil-gas separator connected to the protection with a pipe work; and one or a plurality oil storage unit being connected in series between the high-level tank and the oil-gas separation; oil inlet pipe and oil outlet pipe to and from each oil storage unit being respectively disposed in the upper and the lower parts of the chamber therein; oil inlet pipe opening and oil outlet pipe opening being respectively provided in inverse trapezoid and trapezoid.