Pressure Transmitter Improves Energy Efficiency in New Oil Burner Pump

Global warming, rapidly declining fossil fuel supplies and the global financial crisis have led to a growing demand for energy-efficient products. At Danfoss, thinking energy efficiency into product design is a key priority. In 2008, engineers began developing an oil burner concept for the high-end market aimed at significantly reducing the electrical power input to the pump motor. Launching in 2011, the new concept will reduce the power consumption of the oil pump system by up to 80 percent.

Smaller, lighter, and more energy efficient

In temperate and cold climates, heating is often one of the biggest consumers of energy - and one of the largest expenses. Traditionally burner motor pumps and burner ventilation fans were driven by one motor which meant that the oil pump was starting pumping oil much too early compared to when the oil was ignited - it pumped oil whilst the optimal air ventilation in the combustion chamber was established. Until the solenoid valve opened for the oil to flow to the nozzle and get ignited, the oil was led back to the tank and this pump work was waste.

With today's high-end burners you have separate motors. The pump often has a 50 Watt or 90 Watt single-phase motor with an efficiency of 50% that runs full speed even the heat load could be met at reduced speed. However, still the surplus oil is led back to the tank and a part of the pump work is waste. But thanks to Danfoss, this problem has now been solved.

An integrated motor-pump for high-end oil burners, the Danfoss solution significantly reduces the pump's electrical power consumption. The pump is powered by an energy-efficient permanent magnet motor, and controlling the oil pressure in the pump is easy. An MBS 1900 pressure transmitter keeps the injection pressure variable between 4 and 25 bar and the speed of the motor between 400 and 3000 rpm. Because the pump speed and the discharge pressure are adapted to the actual heat load, energy consumption is reduced even further.

Compared to a standard single-phase motor, the integrated Danfoss BFPM-pump system consumes 50 to 80 percent less power. What's more, it's half the size and weight. And the optimized combustion process means there are fewer stops and starts, so there is much less wear and tear on the boiler.

Coming to market in 2011, the new energy-efficient motor-pump will help cut heating bills.

For more information, please visit

Please Direct Reader Inquiries to:

Angela Peconi, Marketing & Inside Sales Manager

Danfoss LLC

Industrial Automation

11655 Crossroads Circle

Baltimore, MD 21220

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