Water temperature increase impact on the thermal efficiency of the boiler? A: The water temperature to improve thermal efficiency of the boiler can be divided into two cases to discuss. The first case, assuming constant evaporation boiler. When the water temperature increase, due to the economizer heat transfer temperature difference is reduced, reducing heat absorption, enhance the tobacco temperature economizer, air preheater temperature and pressure increase, increase heat transfer, the hot air temperature increased slightly, smoke the temperature rises, so that boiler efficiency is lowered. However, after the water temperature increase, increase in the heat for evaporating the evaporation increases. In order to maintain unchanged the amount of evaporation, it is necessary to reduce the amount of fuel, which makes the exhaust gas temperature is lowered to improve the thermal efficiency of the boiler. Because of these two factors on the thermal efficiency of the boiler roughly, therefore, when the constant holding evaporation boiler, the thermal efficiency of the boiler feed water temperature increase substantially unchanged. The second case, assuming that the same amount of fuel. After the water temperature increase, decrease temperature and pressure economizer, economizer flue gas temperature, increasing the air preheater heat absorption, the exhaust gas temperature rises, reduce the heat efficiency of the boiler. Since the hot air temperature is increased, the furnace temperature increases, water wall heat absorption increases. After the water temperature increase, the heat for increasing the temperature is reduced, while increasing the amount of heat for evaporation. Therefore, the water temperature increase, if the fuel quantity constant, the increased evaporation, but the thermal efficiency is lowered. To sum up, raise water temperature, evaporation is kept constant regardless of the amount of fuel still remains the same, we can not improve boiler efficiency. However, to improve the water temperature, it does improve the thermal efficiency of the plant cycle, thereby reducing the coal consumption.
Automatic water level control? Electric steam boiler can be set manually or pot Free subject: 108KW the water volume is less than 30.4, flexible and convenient: used in line JB / 2379-93 and "metal tubular electric heating element technical conditions" desired low heat load surface heating element; quality thick stainless steel tube outer heating wire, Ni-Ge alloy built expensive electric components, high thermal efficiency, and longer life. Garland using each heating element is connected to the control system employs multiple heating pipes packet control group can be set to manual or automatic mode; opening pressure can according to the flexible electrical power and steam consumption! 5, safety: in strict accordance with the whole "Steam Boiler Safety Technology Supervision" manufacture, possess a number of complete protection, leakage protection, water protection, ground fault protection, overpressure protection, steam, boiler automatic protection? 1, ease of operation: automatic intelligent control, without staff on duty. Can be set to manual or automatic mode; pressure, automatic level control, boiler fittings touch of a button, either into the automatic operation, the automatic control of the pressure controller, the control system can give food factory in three full pump load change two 10T gas boiler, electric heating automatic start-stop control! 2, clean environment: heating using electric energy, without any environmental pollution clean, easy to install small footprint! , Automatic level control? Electric steam boiler 6, the original electric stepper control, speed control can be divided according to the actual amount of steam, the boiler to reduce the impact on the power grid, so that the boiler operation is more stable.
SUMMARY gas boiler maintenance gas boiler twice monthly maintenance inspection item A. Fuel supply line: a filter cleaning gas oil; ignition gas conduit 2 airtightness inspection; 3 checks whether the flow line... B. inspection of the instrument: a flushing water table; 2 Syphons flushing; valve experiment. C. Check burner:.... The flame detector (photocell) cleaning the light receiving surface; second inspection oil pump pressure is normal; 3 checks the combustion flame is normal; 4 check burner, the burner sound is abnormal; 5 Cleaning revolutions cup; 6 o'clock washing water rod. . Check D. Intake system: a washing water filter; 2 reaches rated pump head and flow; 3 a check valve is working properly... E. daily drainage tank and the cleaning debris. Water quality testing, water testing furnace. F. Check the combustion consumption is normal. Every three months in addition to the maintenance items plus the inspection item inspection items: Electric Part A: 1 line is loose aging, failure; 2 check the reliability of electrical components, overload; Protection relay 3 is normal; B.... open soft low deactivation tank valve exclude sludge; C to test the boiler and then point interlocking means: 1. low water position; overpressure 2; 3 flameout 4. The exhaust gas temperature ultrahigh; D. et quality tobacco. detection: analysis of tobacco smoke constituents comprising temperature detecting tail, combustion is working properly checked. E. burner and boiler cleaning outer cleaning. Paul A. large projects each year hosts a body part of a comprehensive clean-up tobacco pipes, water pipes, front and rear smoke box, part of the furnace and the burnout chamber and smoke tubes ash collection. 1. inspection openings comprehensive inspection hole hand hole, manhole sealing soundness, and timely replacement of defective seals. 2. The overall comprehensive testing instruments, valves, comprising detecting pressure gauge and safety valve, the pressure controller and the electrode level controller tuning. Part B. burner: Burner cleaning turn round cup, ignition means, filter, pump, motor and impeller systems, throttle link means to add a lubricant. Re-awarded for combustion testing. C. access control section detecting electrical components, control lines, the control box clean ash collection, each control point is detected. D. water supply system maintenance water treatment plant to check whether water quality standards, a comprehensive clean soft water tank, to check the functioning of the pump and lift, clean check valve spool and so on.
China's energy revolution continues in depth. According to the director of the National Energy Regulatory Agency, Mr. Li Ye provided by the 2018 annual generating capacity of 6.8 trillion kwh of nuclear power, hydropower, wind power, solar energy and other non-fossil energy accounted for about 30%.
In total energy consumption of 4.62 billion tons of standard coal, a non-fossil energy accounted for 14.3%. Li Ye said the 2020 schedule is expected to achieve a 15% share of the consumer target. Coal in primary energy consumption is first reduced to 60%.
According to local NPC and CPPCC news recently held a show in 2019, and more through the sky to defend the war, to production capacity and other strategies, from industrial, civil and other aspects, to further reduce coal consumption, increase the use of natural gas, solar, wind power and other energy varieties . "Minus coal" has become an important theme in 2019 to promote local energy reform.
By contrast, natural gas production has improved throughout the year, an increase of 7.5% last year, to reach 161 billion cubic meters; imported 90.39 million tons, an increase of 31.9%, increase speed to accelerate to 5%.
At the same time, optimize the structure of power, nuclear power, wind power, solar power double-digit growth, increased by 18.7% over the previous year, 16.6% and 19.6%.
Outside central planning, where two sessions news shows, Beijing, Tianjin, Hebei, Liaoning, Heilongjiang, Hubei, Henan, Anhui, Fujian, Sichuan, Xinjiang and other provinces (cities, districts) made from the resolve of coal production capacity, exit behind coal units , clean heating, natural gas pipeline network construction of related facilities, the development of various aspects of clean energy such as power production, transportation and consumption, promote energy revolution.
Beijing, Tianjin, Hebei, Henan, Anhui and other places, our total coal consumption has been identified as key areas of control. Of the total coal consumption in 2018 before four regions decreased by 10% compared with 2015, down 5% in Anhui Yangtze River Delta region is located.
Beijing: According to the statistics show that in 2018, Beijing completed 450 village "coal to clean energy", the basic Plains Coal-free, high-quality clean energy accounted for more than 96%, the basic bid farewell to coal pollution. To prevent this complex burning coal for a rebound, no coal rank consolidate control results.
Tianjin: 2018, Tianjin has also ushered in the $ 18 billion Three Gorges Group offshore wind projects, the completion of coal to electricity, gas and central heating coal to build up a total of 238,000. 2019 will promote low-nitrogen transformation and construction work clean diesel transformation of mechanical gas-fired boilers, in an orderly urban and rural residents clean alternative to coal for heating.
Hebei: 2018, Hebei Yajian completed 14.01 million tons of coal, thermal power 550,000 kilowatts; 2019 will continue to promote coal reduction mission, planned Yajian 10 million tons of coal, 500,000 kilowatts of thermal power, continue to implement the clean winter heating engineering.
Henan: Henan last year to resolve the coal production capacity 8.25 million tons, the elimination of backward coal units 1.077 million kilowatts. This year plans to phase out coal units behind the transformation of about 1.5 million kilowatts, the main city of Zhengzhou City, to promote coal units cleared and the main city of Luoyang coal units basically cleared to accelerate the development of clean power, new renewable energy power generation installed capacity of 1.8 million kilowatts .
Henan Province is the only one mentioned in clean energy consumptive province, 2019 will continue to promote energy outside the lead channel construction, the province interoperability, optimizing the energy structure and layout. Comprehensively promote green electricity into the Henan construction, improve the ability to absorb foreign clean.
Qinghai: According to preliminary statistics, director of State Grid Energy Research Institute, the Institute for New Energy and statistics, in 2018 the scope of the province supporting the new energy transport grid construction, new energy sources to enhance the delivery capacity of 3.5 million kilowatts. Qinghai photovoltaic power generation efficiency of over 95%.
Anhui: Anhui Province last year to exit the coal production capacity 6.9 million tons, the new renewable energy power generation installed capacity of 3.05 million kilowatts; energy-saving plan to complete the upgrading of more than 1.26 million kilowatts coal units this year, to promote the reduction of coal consumption alternative, withdraw excess coal production capacity of 1.65 million Ton.
Sichuan: The hydroelectric province, the focus of China's largest clean energy base in Sichuan in the "alternative energy", will accelerate this year to enhance the level of electrification, transforming the province's abundant clean energy advantages into development advantages; to focus on deepening the reform of power factor markets reform, construction of hydropower absorptive industries demonstration zone, the development of large data, electrolytic hydrogen and other green energy carrier industry.
Fujian: Fujian will accelerate to promote nuclear power, pumped storage, LNG receiving station, natural gas pipeline network and other major energy projects, for new annual installed capacity of more than 2 million kilowatts of power; perfect system of paid use of environmental resources by energy rights.
Deputy director of the Energy Development Center edify the National Energy Renewable represent the future of green certificates market will be issued towards the expansion of the scope of the certificate, the adjustment period, transactions, etc. due to the quota should be monitoring and evaluating mechanisms obligations, non-hydro renewable energy, expand trading partners development direction.
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