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- Abstract：The energy supply of oil and gas field enterprises is divided into different modes of production and distribution. Natural gas distributed energy can improve the power supply security and energy efficiency. Using natural gas,gas gathering station can meet the demand for electricity, the use of high temperature flue gas and cylinder water provide the required heat station. Intelligent control system to achieve real-time data transmission and remote monitoring. The automatic control device, the control valve opening, to meet the different needs of seasonal load and temperature change.Keywords：distributed energy system;combined heat and power;diesel generator;heat exchanger;water jacket furnace0|39|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Recently,equipment lubrication of Wind Power is still lack of systematical and normatively technology supervision and its trade standards have not been formed. Based on this situation,the object,scope and purpose of technology supervision for equipment lubrication of Wind Power have been proposed. The content of technology supervision for equipment lubrication of Wind Power,the inspection and maintenance of lubrication oil,grease and installation have also been defined in this paper.Keywords：wind power;equipment lubrication;technology supervision5|32|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The Dual-loop Organic Rankine Cycle(DORC)system based on middle-high temperature as heat source is analyzed,and the thermal efficiency,exergy efficiency,mass flow rate of working fluids,the outlet temperature of flue gas,the net output power of the system are studied and in this paper. R141b-R245 fa, n-pentane-R600 and isopentane-R114 were respectively selected as working fluids of DORC. The supercritical cycle is used in high temperature loop(HT),and subcritical cycle in low temperature loop(LT). The research results show that:with the increasing of the HT evaporating pressure,for the system using n-pentane-R600 and isopentane-R114,the thermal efficiency and exergy efficiency firstly increase and then decrease,the net output power keep reducing,while the thermal efficiency and the exergy efficiency keep increasing of the system using R141b-R245fa;or three DORC systems the mass flow rate of the working fluids changes in a very small range over the HT evaporating pressure; the system has the potential to further improve because of the high temperature of the flue gas outlet.Keywords：SORC;supercritical cycle;subcritical cycle;thermodynamic properties2|32|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Based on The manual for Production of Industrial pollution sources, the calculated value of SO2 emission was much higher than the actual discharge.In the research, the petrographic analysis of biomass fuel was shown, and the calculated value and actual discharge of SO2 emission from twenty biomass power generation units were compared. Reference on the calculation of SO2 emission from coal-fired power plants, the conversion coefficient of SO2 was selected as the proportion of combustible sulfur in biomass,with the desulfurization efficiency considered. The results were more close to the actual discharge. Therefore,some arguments about pollutants generation and discharge coefficient in the manual were put forward.Keywords：biomass fuel;SO2;pollutants generation and discharge coefficient0|26|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Increasing parameters for subcritical units upgrade is a hot issue recently as well as cross-generation. By technical and economic comparison between these two retrofitting programs, the result for 600 MW wet cooling subcritical unit shows that the former can reduce coal consumption to 298.67g/(k W·h) while the latter 277.3g/(k W·h). However,parameter-increase scheme has more advantages such as small retrofitting scale, short duration and also cost fewKeywords：increasing parameters;cross-generational upgrade;turbine retrofitting14|27|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
Based on the Intelligent Control of the Fire Sprinkler System in the Ammonia Area of the Power Plant
Abstract：The ammonia area in the power plant belongs to major hazards and key fire prevention area. Fire sprinkler system and intelligent fire alarm system install in ammonia area, through the combustible gas detection alarming device and flame detector, the fire sprinkler system is interlocked startup. The fire sprinkler system based on the intelligent control can ensure the safety of ammonia area, reduce the possibility and dangerous of the accidentKeywords：ammonia area;fire sprinkler system;intelligent control;combustible gas detection alarming device3|23|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15- Abstract：In a power plant,the scaling accident of mist eliminator occured frequently in the 660 MW unit flue gas desulfurization system. The problem had seriously affected the normal operation. To solve this problem, this paper analyzed the scaling samples and the factors which affected the operation of the mist eliminator. It is concluded that the mixed scales formed by the deposition and the crystallization reaction between the flue gas and the slurry. The mixed scales and the washing is not in time are the reasons for the failure of the mist eliminator. For this problem,a series of preventive measures are put forwardKeywords：脱硫;除雾器;结垢;堵塞12|33|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Fineness, water demand ratio, chemical composition and mineral structure of coal fly ashes were measured in this paper. The mechanism of fly ash used in cement, concrete and waste water treatment is expounded. The modification methods of coal fly ash are introduced from mechanical grinding, fire modification, acid modification, alkali modification,surface active agent modification and mixed modification which can improve the quality of fly ash and broaden its utilization wayKeywords：fly ash;physical and chemical properties;modification;adsorption performance19|20|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The vibration of the vibrating feeder and the lower steel structure are analysised,in different production conditions of the bridge type grab ship unloader. Then the relationship between the vibration of the lower steel structure and the vibration of the feeder is explored. The vibration characteristics of the ship unloader's feeding system are deeply interpretedKeywords：continuous unloading coal;vibrating feeder system;vibration analysising;bridge type grab ship unloader0|20|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Uncertainty analysis is a method of quantitative expression of test, which is must be included in a complete test. Uncertainty analysis in ASME PTC 4-2013 "Fired Steam Generators Performance Test Codes" is explained detailedly.Taking efficiency test of 350 MW pulverized coal boiler as an example, uncertainty analysis of test result is calculated. The effect of each parameter is contrastively analyzed, and reducing uncertainty of efficiency test is discussed.Keywords：boiler;efficiency;ASME;uncertainty analysis1|27|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：For a 600 MW subcritical Turbo-generator Unit, the first start-up succeed, but the second and the third start-up failed due to the vibration was too large. By analyzing the operating parameters and the vibration data, the result that the rotor was bending was proposed. When the bending restored to normal through barring and then some measures were taken,the fourth start-up succeed. There is reference significance for other units' start-upKeywords：steam turbine;bending;serious vibration;failed start-up4|8|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In the process of commissioning a 2*600MW Coal-fired power plant, The secondary circuit voltage test of # 1 main transformer voltage transformer was carried out. During the test it was found that the vacuum switch MCB 9 of the third winding was not closed,but A voltage is generated at the non-charged side of the switch. After a number of experimental analysis,the problem was found and solved. The secondary circuit voltage test of # 1 main transformer voltage transformer is carried out again. The test results are correct,ensuring the commissioning processKeywords：electrical commissioning;voltage transforme;secondary circuit1|8|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In view of the wind power equipment running in the condition of various speed and unstable loads, and cannot be monitored and diagnosed effectively with merely one signal processing method,the methods of wind turbines fault diagnosis based on vibration analysis and hybridize several commonly used signal processing methods are proposed. According to the structural parameters and operating features of wind turbines,faults mechanism and types of wind turbines are analyzed. Then extract the fault characteristic frequency hidden in the vibration signal using the time-domain,frequency-domain and envelope spectrum methods. Finally,the result of dissembling the wind turbine validates effectiveness of the proposed method.Keywords：wind turbines;fault diagnosis;vibration analysis;envelope analysis36|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：In the process of wind power generation, the power curve of wind turbine is an important index to evaluate the performance of the wind turbine, which is related to the actual performance of the wind turbine and the actual benefits of the wind farm..In this paper, based on the IEC61400-12 standard, the wind speed power data recorded by the SCADA system is used to verify the power curve of wind turbines in a wind farm.And the performance of wind turbine generator is evaluated according to the measured wind speed-power curveKeywords：SCADA;measured data;power curve;performance evaluation8|10|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Analysis of the current status of wind power booster station transformer,this paper introduces the new type multifunctional structure characteristics of the main transformer, using new type of main transformer neutral point resistance ark to zero sequence protection as the main line fault protection, quickly cut line fault,ensure the normal operation of other fan and routes;Using the new type of the balance of the main transformer winding instead of SVG step-down transformers, save the investment cost;Equipped with intelligent online monitoring device,the realization of the main transformer of intelligent management,improve the safety and economic behavior of the wind farm,it is of high popularization value.Keywords：multi-function transformer;wind farm;application1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper proposes a deaerator automatic adjustment device and deaerator exhaust oxygen concentration automatically adjust oxygen concentration method,carried out the deaerator automatic regulating oxygen concentration method of research. Through to the deaerator exhaust parameters such as oxygen concentration detection,put forward reasonable deaerator exhaust oxygen door control method, adjust the deaerator,oxygen content in the exhaust oxygen content is corresponding with the load change,and to overcome the disturbance to the rest of the row of the effects of oxygen content,in order to reduce the unit loss,so as to improve the efficiency of unit.Keywords：deaerator;exhaust oxygen door;automatic adjustment;the control method3|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Induction air unit was improved by decrease the induction ratio and add the rectifier. Performance test on fan coil unit and improved induction air unit system was carried in the model houses. Test results showed:Induction air unit system could meet the temperature requirement of room. It had a strong dehumidifying ability and much uniformity air velocity in the range of comfortable.Induction air unit system had little temperature gradient and difference.The unit was energy efficient combined with the extensive air handling unit and medium chiller. Improved induction air unit would be used in the high quality air conditioning spaces.Keywords：induction air unit;fan coil unit;temperature;power;PPD5|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：This paper introduces the principle of heat solution dehumidification air conditioning system, analyzes the design points of heat solution dehumidification air conditioning system through the case. Analysis of fresh air state point and dry coil load of dehumidification solution dehumidification air conditioning equipment by i-d graph.Keywords：heat solution dehumidification air conditioning;humiture independent control;i-d diagram2|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：Integrating the industrial PLC control product, this paper introduces a new and better solution for the current railway train air conditioning control system,comparing the traditional railway train air conditioning system. It is better to reach the customer requirement without significant increase in the cost. Easy to operate,easy to maintain,expand and real-time status display.Keywords：rail transit;air-conditioning;control system;optimization2|6|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：The hospital clean operating room has the higher requirement on indoor cleanliness、tempreture and moisture, the four-pipe-water system has been increasingly applied in the operating room construction because of its high load adaptability、good accommodative facility and can be better satisfied the clean operating room's control requirement.The cold and heat source is the key factor of the four-pipe-water system.The article combines the engineering constuction examples,supplies four types of the cold and heat sources,and hopes to give some references to the designers.Keywords：four-pipe water system;cold and heat source;air cooled heat pump;air sourceheat pump;multifunction cold hot water unit4|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：During transitional season, the single tent is widely used for its features of being simple and easy to carry.Because of using poor heat insulation material as the tarpaulin of the tent, its thermal environment indoor is very bad.Experiment studies on improving the thermal environment in tents by using natural ventilation during transitional season at Tianjin were done. The thermal environment parameters of tents with different natural ventilation plans were recorded and analyzed. The experiment results show that natural ventilation plays a certain role in adjusting thermal environment of tents.Keywords：tent;natural ventilation;transitional season;thermal environment0|8|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
- Abstract：According to practical engineering, this article gives the analysis on selection of ice thermal flow, chiller's cooling capacity, EG pump, ice thermal storage tank, cooling tower and system operation strategy.Keywords：ice thermal storage;EG pump;ice storage tank;cooling tower1|7|0<HTML><L-PDF> <Meta-XML>Updated：2026-05-15
