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171 5 A boiler delivers steam at 100 bar and 500 o C. The feed water inlet temperature is 160 o C. The steam is produced at the rate of 100 tonnes/h and the boiler efficiency is 88%. Estimate the fuel burning rate in kg/h if the calorific value of the fuel is 21 MJ/kg. [14 t/h] 6 In a boiler test, the following observations were made: Feed water temperature = 12 o C; pressure of steam = 11 bar

Learn More1 · Chapter 8: Steam Power Cycles b) Regenerative Cycles - Open and Closed Feedwater Heaters. One approach to increasing the efficiency of steam power cycles is by extracting some of the steam from various stages of the turbine and using it to preheat the compressed liquid before it enters the boiler.

Learn MoreLiquid water enters a steady-state heat exchanger with a flow rate of 200 kg/min at 15 MPa and 335°C. It exits the boiler as superheated steam at 15 MPa and 600°C. There is no mechanism for shaft work in the heat exchanger. A. Find the difference in specific enthalpy between the entering and exiting streams. B.

Learn MoreBoiler water pressure, simply put – is the balance of water and air within your boilers system (basically within the pipes and components). In order for your boiler to pump hot water around the pipes in your house, whether that be for a bath, shower or to heat your radiators –

Learn More39% in the first region, and 6% in the third region, for the maximum boiler pr essure of 8 bar. In their research, Gulhane and Thakur [2] enters the feed water tank (reservo ir).

Learn MoreUse boiler horsepower to calculate steam flow. Boiler horsepower is not related to mechanical horsepower. It is a boiler industry rating that predicates the amount of saturated steam a boiler will generate starting with water at 212 degrees Fahrenheit and 0 pounds per square inch gauge (psig--meaning atmospheric pressure) and ending with steam at 212 F and 0 psig.

Learn MoreThe boiler is actually an oversized distillery in that the water that enters the boiler is vaporized to steam, leaving the solids behind. Depending on the amount of solids in the water, or hardness, the residue is sometimes visible when a pot containing water is boiled until all water is vaporized.

Learn More2017-9-8 · 6. Fuel 7. Boiler feed water d) Pressure measurements for 1. Steam 2. Fuel 3. Combustion air, both primary and secondary 4. Draft 1. Energy Performance Assessment of Boilers Bureau of Energy Efficiency 6. 1.7.3 Test Conditions and Precautions for Indirect Method Testing

Learn More8.7 Water is the working fluid in a Carnot vapor power cycle. Saturated liquid enters the boiler at a pressure of 18 MPa, and saturated vapor enters the turbine. The con- denser pressure is 6 kPa. Determine (a) the thermal efficiency (b) the back work ratio. (e) the net work of the cycle per unit mass of water lowing, in kJ/kg.

Learn More2012-11-9 · A coal-fired boiler produces superheated steam steadily at 1 MPa, 500 o C from the feed water which enters the boiler at 1 MPa, 50 o C. For a mass flow rate of 10 kg/s, determine (a) the rate of heat transfer from the boiler to the water. Oil with a density of 800 kg/m 3 is pumped from a pressure of 0.6 bar to a pressure of 1.4 bar, and the

Learn MoreCarbon dioxide gas enters an adiabatic expander at 8 bar and $673.15 mat{K}left(400^{circ} mat{C}right)$ and discharges at 1 bar. If the turbine efficiency is $0.75,$ what is the discharge temperature and what is the work output per mole of $mat{CO}_{2} ?$ Assume $mat{CO}_{2}$ to be an ideal gas at these conditions.

Learn More2013-4-4 · Water vapor at 6 MPa, 600˚C enters a turbine operating at steady state and expands to 10 kPa. The mass flow rate is 2 kg/s and the power developed is 2626 kW. Stray heat transfer and kinetic and potential energy effects are negligible. Determine (a) the isentropic turbine efficiency and (b) the rate of entropy production within the turbine, in KW/K.

Learn More2021-1-13 · Boiler Water Treatment. Boiler Water treatment is mainly done. 1.To Prevent scale formation. Or. 2.Corrosion. It is because Scale formation and corrosion are the main two factors that determine the efficiency of the internal parts and as well as lifetime of the boiler.

Learn More2017-7-22 · 6 Reheated steam pressure (bar) 40.43 7 Reheated steam temperature (oC) 537 8 Feed water flow (kg/s) 436 9 Feed water inlet temperature to boiler (oC) 253.4 Table II. Design Details of Condenser 2 Cooling water flow (m o S.No Design Details Value 1 Number of passes 1 3/s) 24 3 Surface area of condenser (m2) 20627.4

Learn MoreGiven: Steam pressure in boiler = p = 13 bar From steam tables, for steam at pressure, p = 13 bar t s = 191.60°C. h f = 814.59 h g = 2785.7 kJ/kg The feed water enters the economizer at

Learn MoreGiven: Steam pressure in boiler = p = 13 bar From steam tables, for steam at pressure, p = 13 bar t s = 191.60°C. h f = 814.59 h g = 2785.7 kJ/kg The feed water enters the economizer at

Learn More6-8. Water enters the constant 130-mm inside diameter tubes of a boiler at 7 MPa and 65°C, and leaves the tubes at 6 MPa and 450°C with a velocity of 80 m/s. Calculate the velocity of the water at the tube inlet and inlet volumetric flow rate. 6-47. An adiabatic air compressor compresses 10 L/s of air at 120 kPa and 20°C to 1000 kPa and 300°C.

Learn MoreA separate chapter is devoted for deaeration and deaerators. Refer Chapter -38. Steam Drum and Mud DrumA boiler system consists of a steam drum and mud drum. The steam drum is the upper drum of a water tube boiler into which feed water is added. Chemicals used for internal boiler water treatment are also 6 6 6 6 added to water in the steam drum.

Learn More7. Air at 1.02 bar, 220C, initially occupying a cylinder volume of 0.015 m3, is compressed reversibly and adiabatically by a piston to a pressure of 6.8 bar. Calculate i) the final temperature, ii) the final volume, iii) The work done on the mass of air in the cylinder. i.e., work done on the system = 2.74 kJ. 8.

Learn More2014-8-13 · as the steam cleaner (or a maximum 6" higher). 4. Plug the unit into a GFI grounded outlet. 5. Switch the unit ON. 6. The pump will start buzzing as it begins working. 7. The "WATER LEVEL IN BOILER" light will come on. Only then will the machine begin to heat. 8. Allow the unit to heat for 20 minutes to until it reaches 70-75 PSI. 9.

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