定频空调器低温制冷运行控制系统的可靠性分析

随着机房、食品加工等场所低温制冷需求增多,定频空调器的制冷范围需要从最低18℃制冷扩展到-10℃制冷,以满足日益增多的需求。为了减少定频空调器的零部件增加,合理控制成本,本文通过对定频空调器低温制冷的运行参数分析,提供一种智能的控制程序,通过检测室外环境温度、冷凝器盘管温度、压缩机电流等参数,合理控制室外风机的启停时机,避免压缩机频繁关闭,使普通定频空调器制冷范围得到扩大。

空调过流保护器储能焊专机生产线的研制

通过对一种新型空调压缩机过电流保护器的焊接工艺进行研究,采用储能焊焊接完成过流保护器各部件的焊接,由几台单工位储能焊接设备及1台多工位储能焊接设备组成焊接生产线,完成过流保护器总成的焊接。

Numerical Experiments of Magneto-convection Using SUPG/PSPG Techniques

The proposed SUPG/PSPG stabilized FEM formulation for incompressible fluid flow simulation is extended to thermo-magnetically driven flows, and is used for the calculation of the direct and sensitivity thermal,fluid flow and electric potential fields. The method is demonstrated through the solution of an inverse problem with known results.