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- Abstract：In order to implement the "natural gas utilization policy", "coal to gas" and other countries and Xinjiang region related policies,the article through the load factor method,Tiemenguan core area of different nature of the energy consumption needs of a detailed simulation, Planning and construction of a natural gas cold,heat,electricity triple for energy stations,to meet the core area of iron gate city cold,heat,electricity users with demand. Through the planning and analysis, natural gas cold,heat,electricity triple supply system for commercial, business and other core areas to provide 81,000 GJ/a of the cooling capacity,145,000 GJ/a heat and 103 million kWh/a of electricity,The system can be used as a supplement to the energy supply of Tiemenguan to create considerable economic and social benefitsKeywords：Xinjiang area;natural gas cold;heat;electricity triple for energy station;load factor method2|10|0<HTML><DownloadPDF> <Meta-XML>Updated：2026-05-15
- Abstract：Depth of AGC load process,the coal mill pulverizing system for thermal power unit startup and shutdown or tripping disturbance conditions,such as led directly to the main steam pressure and main steam temperature of the main parameters, such as severe changes, seriously affected the quality of AGC regulation. To solve this problem, this paper puts forward the fuel quantity to override control and a wind pressure automatic correction of double anti-interference control strategy. And apply in depth of AGC load of a 350 mw supercritical unit of the coal pulverizing system control,operation results show that the control strategy can not only steady disturbance conditions of fuel quantity,and can keep the average output of wind pressure with a mill dynamic matching relation,at the same time, which can effectively overcome the disturbance of the coal pulverizing system, ensure the steady performance of main parameter and the AGC control qualityKeywords：AGC;Disturbed;override;correction;anti-interference;matching;performance1|43|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Discusses the optimization experiments for supercritical boilers,according to the distribution of NOX,we adjust ammonia system,reduce the amount of injecting ammonia,the distribution uniformity of NOX at SCR outlet is improved,ammonia escape concentration is reduced,the impact of ammonium hydrogen sulfate to the air preheater is reduced and denitrification efficiency is improved.Keywords：mmonia spraying optimization;NOx distribution;SCR;ammonia escape1|23|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper introduces a Runback(Referred to as RB)function test carried out on a W Flame boiler unit,which is equipped with the double-inlet and double-outlet coal milling system,heavy fuel oil guns and double cyclone burners. It focuses on the logic function design,preparation test and test attentions.The process of RB function test has been described,analysis of the RB test data shows that there are some problems in the test process,and the corresponding solutions and logic optimization were presented,after then the RB function can be successfully conducted in practice. The realization of RB function would improve the operation security coefficient as well as the economic and social benefits.Keywords：double-inlet and double-outlet;W Flame;runback function test;preparation test;logic optimization;heavy fuel oi18|11|0<HTML><DownloadPDF> <Meta-XML>Updated：2026-05-15
- Abstract：An experiment platform was built on a 1000 MW boiler in opposed firing pattern for low-NOx combustion optimization. The formation characteristics of NOx in different working conditions were studied by changing the oxygen concentration,air damper position of over-fired air(OFA),the distribution of second-air and combinations of burners. The results indicated that the effect of different oxygen concentrations on temperature of flue gas in furnace was very small. The formation of fuel-NOx was the leading factor of increasing NOx emission,and the effect of thermal-NOx was almost negligible. With OFA increasing,average temperature of flame in furnace and NOx emission decreased,CO volume concentration increased. When the damper position of OFA was at 100%,the NOx emission could be controlled at a low level,but the CO volume concentration rapidly became greater. Considering NOx emission concentration and economy of boiler,OFA could be controlled at around 80%. Comparing the four types of air distribution mode,pulverized coal burning rate and the average temperature of the flame in the furnace the highest level in the pagoda-shaped air distribution type,and NOx emission concentration was not high,only 3.57% higher than the waist-shaped air distribution.The experiments also confirmed that NOx emission decreased 16.82% under the lower burner operation mode compared with the upper burner operation mode. Reducing the operation of the upper burner could inhibit the formation of NO_x through pulverized coal staging combustion,and control the coking of platen super-heater by reducing furnace outlet flue gas temperature in a certain extent.Keywords：opposed firing;low NOx;staging combustion6|21|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In a 200 MW unit in the process of operation, abnormal vibration generator shaft with big load phase increases, generator hydrogen purity low failure.Through comparing the change of the generator bearing vibration track,develop the test plan and implement, on the basis of analysis and test data,for large generator bearing vibration fault diagnosis.Diagnostic results show that the reason for the generator rotor of the generator bearing vibration high hot bending load,lead to seal the reasons for the low hydrogen purity for vibration and shaft neck damage,hydrogen seal oil pollution.According to diagnosis,combining with the actual operation,at 7 watts slip ring and counter weight,on-site high speed dynamic balance,at the same time to repair of 6 wazhou neck,replace the seal 6,7 watts.Dynamic balance and repair results show that the generator bearing vibration has been effectively reduced,the hydrogen purity returned to normal.Keywords：generator;vibration;hydrogen purity;thermal bending;dynamic balancing0|28|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Before the retrofit of the condenser of large thermal power plant,there is a phenomenon of poor heat transfer characteristics, which seriously affects the economic performance of the unit, In this paper,the structure of the condenser is modified with a bionic double connecting pipe,and the performance evaluation test is carried out after the retrofit. The result shows that the retrofit plan is feasible,and the design of the condenser vacuum can reach the design value under the condition that the circulating water temperature,flow rate and condenser heat load are the sameKeywords：condenser;tube bundle collocation;performance analysis;flow and heat transfer characteristics1|48|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：For the Mill tripped because of instability of a Boiler’s combustion,This paper analyzed the parameter of the coal mill at start-up time,and the changein theactualproductionofcoal quality, studyed the organization of burning ability of swirling burner,and found the maincausesofinstability of Boiler’s combustion.We have solvedthe problemat their source about instability of the Boiler’s combustion by taking measures,which has a certain reference value for similar users of the combustion system andthe coal pulverizing system.Keywords：boiler;coal mill;burner;trip1|25|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Thermal power plant fast cut back is an important safety guarantee of large units indispensable,through the analysis of main equipment and system of No. 3 unit of India KMPCLpower plant 6×600MW project,according to the control strategy of FCB control difficulty made fuel,steam flow, drum level and interlock protection,to ensure a successful test of fast cut back.Keywords：fuel;main steam flow;drum water level;interlock protection2|38|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In order to find out the operation and maintenance status of chemical instrument in thermal power plant, and improve the accuracy of on-line chemical instruments and the technical level of chemical supervision. The field investigation is carried out on the management model of online chemical instruments, the skill level of maintenance personnel and the comparison of qualification rates before and after correction of on-line chemical instruments in 18 power plants of China Huadian Corporation, the corresponding management and maintenance suggestions are given against the problems found in the investigation. In conclusion, the on-line chemical instruments have the problem of low measurement accuracy and they can not meet the requirements of operation control and chemical supervision.Keywords：on-line chemical instruments;maintenance;present situation;chemical supervision3|41|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The SCD 3.0MW high power double-blades wind-turbine generator(WTG)utilized in Huaran field,cannot meet the designed power on production, moreover,output was affected and frequent shutdown happened in summer for the high temperature of windings. In order to improve the reliability and increase WTG output,we optimized the SCD3.0MW generator,including stator winding optimization and rotator magnet,magnetic yoke optimization. It proves that the optimization has brought the expected results with rated output power increasing by300 to 400 KW and the temperature of windings standing at 80 to90℃,thereby pushes the development of high power double-blades wind-turbine generator.Keywords：generator;power;winding;magnet;magnetic yoke1|25|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Recent years, as the main power export province in the national strategy of transmitting electricity from west to east, Guizhou province shows a rapid development in wind power. Presently, there are high voltage problems in two substations integrated with wind farms called Weining and Hezhang in Bjjie Area which ownes the richest wind power resourses in Guizhou province. This paper combined actual situation of the two substations and the relative standards such as Technical rule for connecting wind farm to power system to analyze the cause of high voltage problems, and on the basis of which gives considerations to the long term power grid connection and the Inductive reactive power balance results of the two substations, finally put forward the countermeasures of installing appropriate amount of low voltage reactors on the low voltage buses of the two substations.Keywords：wind farm;substation;voltage;Bijie area1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The existing energy storage technology was analyzed and summarized. The characteristics of each energy storage technology were compared. The future development direction of the energy storage technology was forecast. It was found that the recent large-scale storage was still dependent on the pumped storage power station,which was used for power distribution and power supply. The flywheel storage technology will be improved around the energy density and reducing costs. The compressed air storage will be developed in 10 MW level. The electrochemical energy storage such as liquid batteries and sodium sulfur batteries will be gradually applied in large-scale power plant storage, which was used for the peak load shifting and smoothing plant output. The rated power of superconducting magnetic energy storage and super capacitor energy storage was at the MW level, thus, how to reduce the cost and increase the life expectancy should be of concern. The molten salt heat storage technology will be developed with the development of solar power technology. The development of new mixed molten salts will be the direction of the future research.Keywords：energy storage;pumped storage;compressed air;electrochemical energy storage;heat storage5|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In a 200 MW unit in the process of operation, abnormal vibration generator shaft with big load phase increases, generator hydrogen purity low failure.Through comparing the change of the generator bearing vibration track,develop the test plan and implement, on the basis of analysis and test data,for large generator bearing vibration fault diagnosis.Diagnostic results show that the reason for the generator rotor of the generator bearing vibration high hot bending load,lead to seal the reasons for the low hydrogen purity for vibration and shaft neck damage,hydrogen seal oil pollution.According to diagnosis,combining with the actual operation,at 7 watts slip ring and counter weight,on-site high speed dynamic balance,at the same time to repair of 6 wazhou neck,replace the seal 6,7 watts.Dynamic balance and repair results show that the generator bearing vibration has been effectively reduced,the hydrogen purity returned to normal.Keywords：双层皮玻璃幕墙;通风腔;夏季工况;建筑能耗0|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Currently,the energy recovery rate of fresh air heat recovery system is about 50%-60%.The summer fresh air temperature is higher than indoor,winter fresh air temperature is lower than indoor,which disturb the stability of the indoor thermal environment.This paper proposes a new compound air heat recovery system whch combine wheel with heat pump,and test the basic properties of the summer working conditions of the system.Results show that compared with the wheel separate operation mode,in the wheel with heat pump operation mode,after the indoor ventilation and fresh air exchanging heat in the wheel,condenser cooling load is reduced,the compressor power consumption is reduced,fresh air load is greatly reduced after wheel cold recycling,energy saving effect is remarkable,and can effectively decrease the temperature of fresh air,to achieve the design requirements.The difference of fresh air humidity and indoor humidity is not large in the two kinds of operation mode,to air conditioning rooms which have low requirements for indoor humidity,the two operation modes are reliability;the proportion of heat recovery energy and equipment energy consumption in compound air heat recovery system is higher than single wheel heat recovery system,and less affected by the indoor exhaust air temperature and humidity,which has a lot of energy saving efficiency.Keywords：compound;fresh air;heat recovery;wheel;heat pump3|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Automation schematic drawing is the important component to HVAC in design institutes. According to the nowadays design codes,the author gives some design thinking route and detail examples which based on the energy-saving requirement and project practice.Keywords：automation schematic drawing;design;HVAC13|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Economic analysis of ice storage air conditioning system for an office building. Then capered the hourly electricity charge between the ice-storage air-conditioning system and conventional air conditioning system based in different cooling loads. Though the charts, we will know the economy of the ice-storage air-conditioning system more perceivable. In the end, the feasibility of the air conditioning project is proved above the calculation of the payback period.Keywords：ice-storage air-conditioning system;economic analysis;ice storage proportion;payback period;office building7|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This article takes the 2000 standard broadcasting studio of "Suzhou Modern Square" for instance,describing its concrete steps and contents of HVAC design on air-conditioning system,noise eilimination and vibration reduction,air distribution. Through the CFD simulation analysis,represent the rationality of the design of its hvac in standard broadcasting studio spaces.Keywords：2000 standard broadcasting studio;air-conditioning system;noise eilimination and vibration reduction;air distribution4|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：According to the analysis of heat transfer characteristics of the data center dual channel cooling system, the feasibility of the data center dual channel cooling system is demonstrated based on the Fourier law of heat transfer. Two experiments were carried out to analyze the two heat transfer characteristics of the dualchannel cooling system: the heat exchange rate of the contact cooling system increases with the decrease of the inner circulating water supply temperature. The energy consumption of non-contact cooling system decreases with the increase of air temperature.Keywords：data center;double-channels-cooling system;water-cooling;heat pipe;server3|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Combined with an example of an office project in Shanghai, consider the completion of the project after the completion of the operation and operation methods,research and comparison of air-conditioning cold and heat source using centralized and decentralized two different systems,equipment investment,operating costs,operational management and other aspects of different Characteristics,carried out a comprehensive balance and overall assessment.Keywords：centralized decentralized settings;cold and heat source;power supply plan;running energy consumption1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
