A typical duty cycle for pumps and fans is shown in table A. Using Variable Frequency Drives (VFD) varies the speed of fans and pumps so the units deliver only the required flow. The physical properties of fans and pumps, referred to as the AFFINITY LAWS, allows the equipment to meet the partial load requirement and save energy.
ing quenching) the flue gas is cooled to its wet-bulb temperature by co-current spray-ing of a liquid into the flue-gas flow. In the 2 3 2 1 ABB spray scrubber used in combination with the dual-alkali process for washing out harmful acidic gases 1 Quenching stage 2 HCl stage 3 SO 2stage 2 WASTE INCINERATION
Flue Gas Treatment - an overview | ScienceDirect Topics
The appropriate flue gas treatment approach is chosen in close consultation with the client. The selection criteria include regulatory air pollution limits, the clients expectations regarding the energy efficiency of the plant, restrictions on waste water discharge, and
electric motor to perform their duties. The boiler house equipment the forced draft fan rotates at full load constant speed and there are energy losses. By using the Variable Frequency Drive (VFD) to reducing operating speed of the FD fan motor from to 80% can save as 50% of energy.
03/08/2018 · Technical principle. Rotation speed n is of the asynchronous motor in direct proportion to frequency f. The rotation speed of the motor could be changed as long as frequency f is changed. The induced draft fan is a kind of typical fan load, with a control characteristic of variable torque.
Energy Efficiency | How VFDs save energy Analysis and examples of po