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Combined cooling, heating and power technique is an important developing trend of future energy supply systems, which contains several modules relating to energy conversion, storage and management in multi-energy carrier system. In this paper an optimized operation strategy for CCHP based on economy is presented. The output of CCHP system is supposed to change in real time for the high efficiency...
The development of high-voltage power devices based on wide bandgap semiconductor such as silicon carbide (SiC) has attracted great attention due to its superior material properties over silicon for high-temperature applications. Among the high-voltage SiC power devices, the 4H-SiC gate turn-off thyristor (GTO) offers excellent current handling, very high voltage blocking, and fast turn-off capabilities...
With the electric vehicles used lithium manganese lithium-ion power battery (LiMn2O4 power battery) as the research object, the paper researched on the parameter identification of battery cell, has built the finite element model of single cell and completed the experimental verification. Also the paper has built the finite element model of both the battery box and battery pack, and analyzed the characteristics...
In this paper, the boiling phenomena of steam boiler under atmospheric pressure are simulated by using the UDF program of CFD software. Characteristics including pressure, temperature and vapor fraction respectively for bubble, slug and annular flow patterns are extracted as the input characteristic vectors of the BP neural network for the purpose of identifying the two-phase (vapor/liquid) boiling...
Boiling heat transfer in vertical rectangular mini-channels with a width of 2 mm and a length of 390 mm is studied in this paper. The courses of bubbles generation, growth and departure were numerically simulated, the influence of the wall overheating and the movement of bubble bottom micro-layer is analyzed and compared with the experimental datum. All the calculation conducted takes the gravity,...
Flow boiling in vertical rectangular mini-channel with width of 2mm and length of 390mm is studied in this paper. In single-side heating situation, the narrow channel is divided into three zones, bubbles generating zone, growth zone and annihilation zone. The motion characteristics of bubbles in various stages are accompanied by the changes of three zones. The courses of bubbles generation, growth...
Based on Electric Vehicle (EV) Li-ion battery heat transfer mathematical model, the LiMn2O4 battery thermo-physical properties and the parameter identification method are analyzed. Finite Element Method (FEM) model of the battery cell is established and the temperature field simulation agrees with the experiment data well. Research on thermo-physical properties and thermal analysis can be used to...
To investigate the thermal behaviour of electronic units of Alpha Magnetic Spectrometer 02 (AMS-02) in a simulated thermal-vacuum space environment, the integrated model of AMS-02 was programmed using the lumped parameter for AMS-02 and the shroud of Large Space Simulator (LSS). The Monte Carlo algorithm was used to calculate the radiative heat flux between AMS-02 and the shroud of Large Space Simulator...
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