A combined circulation system of spray evaporative cooling and air (CCSSECAC) is a way to enhance the performance an air-cooled electric machine while maintaining its existing structure. Based on traditional machine, when discrete medium particles are scattered into airflow, they will reach heat source with circulation. The capacity enhanced simultaneously through phase transition convection tr...

Small particles are of great interest in a variety applications. Spray drying is common technique for particle synthesis, but it limited with respect to sizes below 10 μm. Therefore, new laboratory-scale spray dryer was designed address this issue. A novel aerosol generator consisting piezo crystal swirl chamber obtain droplets the low micrometer range. After and cooling, were deposited molten ...

Electrothermal atomic absorption spectrometry has five major advantages for measurements of trace metals in biological materials, in comparison to measure­ ments by conventional flame atomic absorption analysis: (1) Trace metal contami­ nation is minimized by avoidance of preliminary chemical extractions and addi­ tions of reagents; (2) Sample volumes are small (1 to 50 /*1). The entire sample ...

A popular method for generating micron-sized aerosols is to submerge ultrasonic (ω~MHz) piezoelectric oscillators in a water bath. The submerged oscillator atomizes the fluid, creating droplets with radii proportional to the wavelength of the standing wave at the fluid surface. Classical theory for the Faraday instability predicts a parametric instability driving a capillary wave at the subharm...

A primary atomization model for visco-elastic liquid is established based on the ligament formation assumption and dispersion relationships. Two linear instability analyses are used in presented paper. Both of them are involved in the primary atomization model and the calculated results are compared with published experimental data. After validation, the model is used to predict the effects of ...

Atomization spray of non-Newtonian liquid plays a pivotal role in various engineering applications, especially for the energy utilization. To operate spray systems efficiently and well understand the effects of liquid rheological properties on the whole spray process, a comprehensive model using Euler-Lagrangian approaches was established to simulate the evolution of the atomization spray for v...