What device is used to raise oil temperature for better pumping and atomization?

The device utilized to raise oil temperature for improved pumping and atomization is the pre-heater. In the context of oil burners, the viscosity of oil can significantly affect its ability to be pumped and atomized effectively. Heating the oil reduces its viscosity, making it easier for the pump to move and for the burner to atomize the oil into fine droplets, which is crucial for efficient combustion.

The pre-heater works by using heat sources, such as hot water or steam, to elevate the temperature of the oil before it enters the combustion chamber. This ensures that the oil achieves optimal conditions for both pumping and atomization, leading to better combustion efficiency, reduced emissions, and overall improved performance of the burner system.

The other devices mentioned serve different functions. A heat exchanger is typically used for transferring heat between fluids but may not specifically prepare the oil for burning. A boiler is designed to convert water into steam or hot water for heating purposes rather than specifically raising the oil temperature. A chiller is used to lower the temperature of fluids, making it unsuitable for the heating context required for oil in burners.