When the 75KW introduced fan and 55KW blower is working at 40Hz its working speed is 80% of the rated speed and fans consumption power is P2=0.83Pn=0.512Pn. If puts the production period as 12 months and considers the total energy saving rate is 30% W=
This is also known as input-output method due to the fact that it needs only the useful output (steam) and the heat input (i.e. fuel) for evaluating the efficiency. Where = boiler efficiency in %. SFR= steam flow rate in kg/hr. SE= steam enthalpy in kCal/kg. FEW= feed water enthalpy in kCal/kg.
Frequency Conversion and Energy Saving Solution for Boiler Combustion System; ... If the fan motor current is up to the rated value the electricity is wasted. d. Power grid impact caused by motor start. ... Frequency of Air Supply System - Must Trend to
Conversion Decimal powers Mass Lengths ... Boiler steam output and combustion output . Prev Next. Steam output : kg/h. Enthalpy boiling water . 829 : kJ/kg. Average operating pressure. bar. ... Boiler water limit . L boi. water limit . L boi. Required surface blowdown rate. 2.6 %
The heating value (also knows as energy value or calorific value) of a fixed quantity of fuel is the amount of heat released during its combustion. The heating value of a fuel is the magnitude of the heat of reaction measured at constant pressure/volume and standard temperature (26 °C) for the complete of a unit of mass of fuel.
Too little air and combustion will be incomplete unburned fuel will be carried over and smokemay be produced. Net calorific value. This is the calorific value of the fuel excluding the energy in the steam discharged to the stackand is the figure generally used to calculate efficiencies. In broad terms: