关键词: 等离子体, 数字测控系统, 能量平衡原理, 焓值

Abstract:

The operating parameters of plasma generator under various regimes were measured by a newly developed digital plasma measurement system, which can test the flowrate of working gas, temperature rise of cooling water, arc voltage and arc current. According to energy balance principle, plasma average enthalpy, plasma average temperature and its distribution at the plasma generator exit were calculated. The results show that at the plasma generator exit, the distribution of jet temperature is parabolic. Increasing gas flowrate, plasma jet enthalpy and temperature will decline, and while adding hydrogen as a supplementary gas, the enthalpy and temperature will increase significantly.

Key words: Plasma, Digital measurement system, Energy balance principle, Enthalpy