Thermal Oil Expansion Tank

Thermal fluid expansion tanks and degassing systems are important for maintaining long oil life as well as lowering the maintenance costs on the thermal oil heater pumps and process equipment.

Thermal oil expansion tank.

The pirobloc de 2500 v hp expansion tank is a reservoir suitable for being pressurized with a diaphragm dividing the tank into two parts air and fluid. Thermal process development can provide an expansion tank degassing tank system or help design a complete new system. Expansion tank is provided in hot oil system to accommodate for the increased thermic fluid volume due to thermal expansion. All water heaters regardless of whether they use heating oil natural gas or propane or even electricity can suffer the negative effects of thermal expansion as the cold water coming into the tank turns to hot heated water increasing the overall water volume via expansion and increasing pressure inside the tank.

The expansion tank is connected to the system using a pipe known as a compensation pipe which allows us to send the increased volume produced by heating the whole circuit to the tank and in the cooling or end of day phase to compensate for the lower level produced due to an increase in the fluid s density upon cooling. This article will show how to do sizing of an expansion tank. Important system design principles like this often are overlooked. Prevent permanent damage to your water heater with an expansion tank.

Instead the focus is placed on specific components like pumps valves or the heater itself. Because most thermal fluid heating systems are closed loop systems. As the system pressure increases water enters the polypropylene lined water chamber of the tank expanding a diaphragm into. It also helps in removal of moisture and non condensables during start up.

When selecting an expansion tank the system volume including the initial fill of the expansion tank the operating temperature and the fluid s coefficient of thermal expansion should all be considered. Expansion tanks are intended to be used in closed circuits of water or other fluids to allow for their expansion following a temperature increase in the heating fluid. Xt 8 thermal expansion tank is the 2 gal. Xt 8 thermal expansion tank is utilized on potable water lines between the backflow preventer or pressure reducing valve and the water heater for protection against water thermal expansion in residential applications.

The properly sized expansion tank should be approximately 1 4 full at startup temperatures and 3 4 full at operating temperatures as the thermal system is brought up to operating temperature the straight leg design allows the expanded thermal fluid to enter directly into the bottom of the main expansion tank by means of a small diameter pipe.