BOILERS, PUMPS & VALVES
HOW TO INCREASE FIRETUBE BOILER PERCENT OR MORE
T
here is no denying that process heating systems that are widely used across industry are large consumers of energy. With sky high energy prices to contend with and Net Zero on the horizon, efforts to reduce reduce emissions are centre stage. In the case of large organisations, assessment of the energy used within their buildings, industrial processes and transport is mandatory under the Energy Saving Opportunities Scheme from improved energy management. When it comes to Firetube boilers, manufacturers of these systems have been control of boilers and burners. Here we look at the key developments that, combined, could
VARIABLE SPEED DRIVE
global electricity consumption. In the EU alone, there are around 8 billion electric motors in use. Whilst many motors are very small and use little electricity, those in industry are often large and major consumers of electricity. Motors used on boiler feed pumps and combustion air blowers traditionally operate at a constant speed. In the case of pump
applications, the motor is used alongside a modulating control valve to control the the motor is accompanied with variable inlet vanes or a modulating outlet damper to control
However, boilers are rarely operated continually at full capacity, so maintaining the motor at the same speed at all times is wasteful. Where process load demands are electrical consumption.
A VSD is an electronic device used to adjust the rotation speed of an electric motor according to the needs of the application. In a Firetube boiler, they can be used to vary the pump or fan speed according to demand, ramping up or down the frequency and voltage to the motor, reducing overall energy consumption.
a VSD is equipment longevity. The inherent soft-start function of a VSD means the motor starting current can be reduced, which decreases thermal and mechanical stresses.
FLUE GAS & CONDENSING ECONOMISERS Economisers are essentially heat exchange devices that extract the residual heat from the exhaust gas generated by the combustion
process. That recovered heat is usually fed back into the process, typically to the boiler feed water thereby optimising the overall cost-effective manner.
By using economisers, you can expect to range of exhaust gas economisers matched incorporating ultra-robust extended surface tubes, which ensure the best practicable heat 98 percent and greater to be achieved. Different types of economisers are available to meet a wide variety of processes and site needs, including economisers that can be mounted in a drawer in the back box of the boiler and those suitable for mounting in casing on the smoke outlet, plus economisers with feed water exchanger, and those that come with fumes / water / combustion air exchanger. One aspect that is important, especially when operating on an interruptible gas supply, is that the economiser is able to work with both natural gas and Class D Fuel Oil.
8 DECEMBER/JANUARY FACTORY&HANDLINGSOLUTIONS
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