Check the amount of heat needed to convert a ton of water into steam. Calculate the amount of heat generated by burning one ton of natural gas by heating water above ten degrees Celsius to saturated steam (198 degrees). ). It is 8.4×10^7 J/cubic meter, natural gas is usually measured in cubic meters to check the efficiency of the steam boiler, usually 65% to 70%. 1 ton/hour boiler = 600,000 kcal/hour = 600,000 kcal heat, 600,000 kcal divided by 90% boiler thermal efficiency (general efficiency of oil and gas furnaces) = 666,666 kcal (power calorific value) The calorific value of natural gas is generally 8,500 Kcal/per cubic meter: 666,666 divided by 8,500 = 78 cubic meters. The above shows that a 1T gas boiler requires 78 cubic meters per hour, which is then multiplied by the unit price of natural gas per cubic meter. is 4.28 yuan/cubic meter x 78 cubic meters= 333 yuan. It is calculated like this: According to the steam thermal parameters table, the inlet and outlet pressure and temperature are used to find out the enthalpy values of the operating point h in and h out, the mass flow rate of steam X (h in - h out) X turbine efficiency = 4.186X860 Mass flow rate is what you call steam consumption. The electricity consumption of oil and gas boilers is not very high, around 2 kW for those powered by coal and that for electric heating is more than 700 kW. For the same ton of steam, the power generation capacity is also different due to. different pressures and superheat temperatures. A ton of steam can generate about 340 degrees of electricity. Around 720KW. The operating cost of electric boilers is relatively high. It is recommended to use a gas steam boiler. Operating costst are much lower than those of electric boilers. And it’s also environmentally friendly. This depends on the steam consumption rate of your unit. For example, if the steam consumption rate is 4 kg/kWh, then the electricity production is 84,166 degrees and the steam consumption is 21,042 kg, which is approximately 21 tons of main steam. How many kilowatt hours of electricity does a boiler need to produce a ton of steam? The power plant boiler has been fully inspected and instrumented. The Power Equipment Department tested it and found that it uses 10 tons/hour of steam at 50-57 degrees/ton of steam.
Water at a height of 200 meters can only produce a certain amount of pressure, and the magnitude of the pressure is related to the area.
Pressure P=ρgh
If 1 ton of water is produced per second, the power can be calculated. Suppose that the cross sectionale is S, then the work is done in 1 second
W=Fs=P*S * V/S=PV=ρgh* m/ρ=mgh=1000*10*200=2 *10 ^ 6 joules
That is to say a generator with a power of 2000 kilowatts.