The volumetric flow rate of heat transfer oil circulating through a hot oil heater is crucial. Let’s consider its effect in heaters that have fired burners and helical coils such as those shown in figure 1. Also known also known as thermal fluid heaters, oil-and-gas producers call them heat medium oil (HMO) heaters. These heaters are extremely versatile and are used in a variety of industries.
No matter the industry, all hot oil heaters have same basic setup: A burner heats heat transfer oil that circulates through the heater coil and through heat exchangers in other equipment. As the name implies, the oil transfers heat from the burner gases to user equipment that requires heat. A single heater can heat one or more fluid circuits with multiple pieces of equipment.