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Modern Combustion Control

OPTIDRIVE™ variable speed fan control for efficient combustion management

Combustion system with Optidrive fan control

Electronics technology in burner control systems delivers performance improvements, creates significant cost savings and reduces pollutants. Electronic burner control systems using feedback sensors can react to minimal changes in the system. They can then use variable speed drives to give precise control over fans and pumps throughout the burner control system to achieve the optimum burner performance at all times, whilst minimising energy and fuel used.

Save Energy

Energy savings comparison graph

The graph shows the energy consumption versus airflow volume for typical control methods. Traditional methods, such as outlet dampers reduce airflow volume, however under some operating conditions, energy consumption is actually increased. Using an Optidrive™ variable speed drive to directly control airflow volume by reducing fan speed allows significant energy savings to be made in operating conditions where the maximum airflow volume is not required.

Reducing fan speed by as little as 20% can reduce energy consumption by up to 50%

Optidrive Eco

Electrical Power Savings

Optidrive™ variable speed drives are widely used to control the speed of fans in many different applications, as they represent the most energy efficient solution to controlling airflow levels. Traditional mechanical methods such as dampers are highly inefficient, and significant savings directly in electrical energy consumption are possible simply by replacing these methods with an Optidrive™ variable speed drive.

The graph above shows the typical performance of a damper compared to an Optidrive™, in terms of the energy required to provide the demanded airflow. With a traditional damper system, as airflow is reduced, energy consumption reduces by only a small amount, however the Optidrive™ provides significant energy savings even with only relatively small reduction in speed. This is possible thanks to the fan law, which shows that the energy required by a fan is directly proportional to the cube of the fan speed.

Integrated Feedback Systems

A temperature feedback signal can be fed directly to the Optidrive (e.g. 0 - 10 Volt, 4 - 20mA, 0 - 20mA), allowing the Optidrive™ to automatically maintain the correct airflow. When reduced airflow is required, the Optidrive™ will automatically reduce the fan speed, leading to direct energy savings. The resulting air pressure can then be used to directly control the fuel flow, maintaining correct air / fuel ratios under all conditions.

Optimise Combustion

Insufficient air supplied to the burner leads to incomplete combustion. This wastes fuel, and creates harmful pollutants. Most burners will generally operate with excess air, however when excess air levels are increased, additional energy is used to heat the air, increasing operating costs. Using an Optidrive™ to control the fan speed, air flow can be accurately controlled, allowing fuel usage to be optimised further, and ensuring that air / fuel ratios are maintained regardless of the required operating temperature level of the burner. This leads to energy savings, and fuel usage savings.

Electronic technology in burner control systems delivers performance improvements, creates cost savings and reduces the risk of harmful pollutants. By utilising feedback sensors to monitor operate, and incorporating an Optidrive™ variable speed drive to directly control fan speed, precise control is possible during all operating conditions, saving energy, reducing wear and minimising fuel consumption.

An efficient burner provides the correct air to fuel ratio throughout the full range of burner operation, without constant manual adjustment.

Reduced Maintenance Cost

Reduce maintenance

Traditional mechanical linkage between air and fuel supplied are inflexible and prone to sticking, and are subject to wear during operation. This may allow the adjustment to become incorrect over time, and requires correct maintenance to ensure the air fuel ratio is maintained. Using an Optidrive™ to directly control the supply air fan speed eliminates the mechanical methods require, dramatically reducing the maintenance required to maintain optimal operation of the burner.

Reduce Noise Emissions

Reducing the speed of the air supply fan also helps to cut the noise level produced from the burner, leading to a better working environment.

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