Question

I need a research paper on: Electronic controls for oil burners, in one paragraph.

Answer 1

As on all types of oil burners, there are controls to insure that the oil burner does not operate during unsafe conditions.

On- off control:

It is the most basic control. Burner’s fire in full pace or in off state. This type of control is used for tiny burners. Every time the boiler is launched it experiences thermal shock. When huge load advances to boiler after the burner is turned off, the steam is lowered. It also originates priming.

High/ low/ off control:

It is complicated than on –off control and therefore costly. The burner has two firing phases, the first phase is employed at less firing pace and then changes to complete firing. This switching reduces thermal shock. The burner can also change back to low fire stage at lesser loads. If the huge load is exwhen the burner is on 'less fire', it can quickly react by improving the firing pace to 'high fire', the cleared cycle hence can be removed.

Modulating control:

The modulating control runs on the theory of complementing the steam pressure requirement by changing the firing pace over the complete operating span of the boiler. Each time the burner is closed and started again, system is cleared by blowing cold air between the boiler area, this decreases the efficiency. Modulating motors are traditional mechanical linkage to maintain the primary air supplied to the boiler. At complete modulation the boiler stays firing, and fuel-air are cautiously combined over the complete firing range to maximize thermal efficiency. This type of control is applied for burners with huge pressure loads.

The stack switch relay This control has a sensor which is kept in the pipe to sense the temperature of the leaving gases. There is a double metal at the end of the specimen. When the system is switched off, the double metal leaves the "cold" switch on. When the thermostat wants heat, the circuit is built for the system to supply power to the burner motor also the starting transformer to give spark to lit the burner. The control side of the stack switch. Thermostat terminals are situated on the lower left. The burner motor also the transformer wires are located on the lower right side. When the thermostat wants heat a heater begins. As the vent pipe heats, the double metal cools and dislocates to close the "hot" position switch.