84 ME Board Problem An oil heater heats 100 kg per minute of oil from 35oC to 100oC in a counterflow heat exchanger. The average specific heat of the oil is 2.5 kJ/kgoC. Exhaust gases used for heating enter the heater with an average specific heat of 1 kJ/kgoC, a mass flow rate of 250 kg/min and an initial temperature of 200oC.
Read More
A person who worked on an oil well handling the tubes and rods used in drilling. Devil: printer's errand boy: A glassworker who inserted the blow iron into the molten glass ready for the glass blower. Salt Boiler: Someone who obtained salt by boiling water. Salter: Someone who made or dealt in salt.
Read More
Components typically affected: This type of boiler corrosion fatigue is commonly found on furnace wall tubes of coal-fired once-through boiler designs, but has also occurred on tubes in drum-type boilers. Solutions: Reduce the ramp rates during start-up and shut-down to reduce the thermal stresses. Optimize sootblowing operations to minimize
Read More
Components typically affected: This type of boiler corrosion fatigue is commonly found on furnace wall tubes of coal-fired once-through boiler designs, but has also occurred on tubes in drum-type boilers. Solutions: Reduce the ramp rates during start-up and shut-down to reduce the thermal stresses. Optimize sootblowing operations to minimize
Read More
It can rust easily. It is unaffected from any salt solution. It can be magnetized. It is a good conductor of heat and electricity. Uses of Wrought Iron: It is used for making sheets due to its malleability. It is used for making rods. It is used for making gas pipes. It is used for making boiler tubes.
Read More
Coal-fired boilers are mainly operated at either subcritical or supercritical conditions. From a thermo-physics perspective, two phase mixtures of water and steam are replaced by a single supercritical fluid when the boiler pressure increases above the critical pressure of 22.12 MPa and the corresponding saturation temperature of 374 °C (Shen and Cheng, 2004).
Read More
Aug 23, 2019 · SIR No. 031 Hot oil boiler - potential explosion (31 March 1992) molten metal burns (12 February 1990) SIR No. 117: Underground SIR No. 147: Fire and entrapment hazard on mobile plant (salt harvester) - 129 K b. SIR No. 147 Fire and entrapment hazard on mobile plant (salt harvester) (3 January 2008)
Read More
Coal-fired boilers are mainly operated at either subcritical or supercritical conditions. From a thermo-physics perspective, two phase mixtures of water and steam are replaced by a single supercritical fluid when the boiler pressure increases above the critical pressure of 22.12 MPa and the corresponding saturation temperature of 374 °C (Shen and Cheng, 2004).
Read More
84 ME Board Problem An oil heater heats 100 kg per minute of oil from 35oC to 100oC in a counterflow heat exchanger. The average specific heat of the oil is 2.5 kJ/kgoC. Exhaust gases used for heating enter the heater with an average specific heat of 1 kJ/kgoC, a mass flow rate of 250 kg/min and an initial temperature of 200oC.
Read MoreCopyright © 2021.Boiler All Rights Reserved.
