The characteristics of main low nitrogen combustion technologies are to be introduced. By analysis of unit’s typical outfire accident after low nitrogen combustion transformation, proposed some targeted solutions to optimize operation of the thermal power unit, such as adjustment of the air distribution,...

Surge is a frequent problem in large axial flow adjustable suction fan. Cause of surge as well as hazard to unit and production was introduced. Pointed out that thermal power after the denitration system transformation, due to changes in the resistance of air and gas systems, so that the whole system...

This paper is intended to propose a way of utilizing low-temperature waste heat what base on forced oil circulation cooling transformer. Cooling of large power transformers affect the normal operation of the power system. Existing techniques simply cool the transformer, but there is not take full advantage...

In this study an experimental investigation was carried out on a turbocharger with variable nozzle turbine (VNT) and exhaust gas recirculation (EGR) system reducing emissions of a direct injection diesel engine. In the EGR system, the exhaust gas was tapped off before the turbine, cooled, and mixed with...

For mining gas outburst coal dust pollution problems caused by dry drilling, this paper proposes a new mine wet compressed air ejecting dust collector. The energy-efficient experimental project of compressed air ejecting dust collector was designed, and tested the performance of the dust collector in...

Energy management of isolated micro-grid with wind turbines and seawater desalination devices is of great significance to the use of wind power, the supply of fresh water resources and the economic operation of micro-grid. This paper established isolated micro-grid model including wind turbines, seawater...

Wind turbine aerodynamic-mistuning phenomenon during the operation may cause great harm. This article is based on sliding mesh technique of three dimensional Unsteady CFD method,taking NREL Phase VI wind turbine as an example,study the pneumatic performance of wind turbine under the axial-flow condition...

In permanent magnet motor, the rotor eddy current loss can make the rotor temperature rise, affect the efficiency of motor performance and even lead to permanent magnet demagnetization. In order to improve the efficiency of the motor and protect the magnet which is core part of the motor, some ways must...

Doubly-fed induction generator (DFIG) wind turbine has been widely used in wind energy industry due to its good energy capture performance, fine controllability and simple realization. In this paper, a mathematical model for the operation and control of a DFIG wind turbine was proposed. Battery storage...

After the experiment at near darkroom conditions, using sodium light through the iris diaphragm to the Fourier spectrometer, the spectrometer is completed by adjusting the interference of sodium, Fourier transform, the peak value of the interference, is received by the detector to the computer. After...

Based on the research of the standard twist drill geometry parameters, the cutting part of the structure of the geometric parameters are expressed as a fuction of radius, the chisel edge and the main cutting edge geometric parameters of the mathematical model are established. Drilling force is one of...

This paper researches on the characteristics of the foam system chosen for CO2 foam flooding in the low permeable oil fields. In view of the actual situation of the oilfield high temperature, high salinity and water injection difficulty, the selected agents must also meet the requirements of stability...

The pressure drop is the main parameter which influences the safe operation of the gelled crude oil hydraulic suspension transportation system. According to the current specification for design of oil and gas gathering and transferring rules three types of frictional resistance coefficient calculation...

Selective catalytic reaction(SCR) of NOx by ammonia is a very efficient method to reduce the NOx emission from coal-fired power plants and large boilers.The ammonia is injected into the exhaust gas stream and is mixed NOx. The mixture passes through the honeycomb-type catalyst bed, where NOx reacts on...

a hydraulic hammer with fluidic actuator was manufactured and applied to directional drilling due to the low penetration rate, long construction period and high drilling cost occurred during the operation of horizontal directional drilling in complicated formations, such as hard, fractured and cavy stratum....

The mathematical models of compressor, evaporator and condenser in a refrigerated container’s refrigeration unit were established, which were used to form the whole system model for steady-state simulation according to the coupling relationship among them. The full-load performance of the refrigeration...

In order to study the feasibility of the butanol as substitute fuel of diesel, the visualization experiment of spray characteristics on butanol diesel mixed fuel was carried out, using the software Fire of the company of AVL to establish a simulation model of n-butyl alcohol diesel spray and calculating...

At present, 300MW generating unit serves as the main facility in power plant in China. This paper analyzes the optimal operation of 300MW generating unit boiler. By constructing the models of waste heat loss q_2, air non complete combustion heat loss q_3, solid non complete combustion heat loss q_4,...

Two kinds of typical temperature and humidity independent control air-conditioning system are introduced in the paper, and load distribution method is determined utilizing enthalpy-humidity chart thus laying a basis of energy saving analysis for THIC system.