A boiler at a chemical the plant produces 37 t/h (tonnes per hour) of process steam and operates 24/7 all year round. The boiler has two motor-driven forced draft fans to provide the furnace air flow. Until recently, the two 220 kW 440 V motors were run at their nominal speed of 1750 rpm and […]
Finding energy savings may mean replacing healthy motors. Most new equipment using electric motors of any size is optimised for energy consumption. However, there are still opportunities for reducing energy use in older motors, even if they are operating healthily. You just need to look for them. Clearly the larger the motor, […]
Inverter drives in the water industry. As with most industries, water companies are following legislation that encourages operations to be more efficient. An example of this is sewage waste being used to generate energy. When implemented locally. it reduces the energy input of the process. Unsurprisingly, inverters or variable speed drives are […]
For 2017, ABB has updated its checklist for building services consultants. When specifying VSDs, ABB Drives urges consultants to review their requirements and ensure the selected drives meet them. According to ABB, initial purchasing represents only about 20% of total cost of ownership of an HVAC system the balance being the operating and running […]
ABB inverter drives with DTC improve cement kiln control and lower energy use. Portland cement clinker is made by heating a mixture of raw materials in a rotary kiln at high temperature, before being ground into a fine powder, for use as the binder in many cement products. ABB drives with DTC […]