To the editor: I had a heat pump installed at my house in Brattleboro this past October. With electrical modifications, it costs about $14,000. The heat pump was manufactured by a well-established ...

We have investigated the fundamental characteristics of unit injectors and pump-line-nozzle systems theoretically by a graphical analysis of characteristic lines. We have confirmed the higher ...

Learning the basics can ease loop tuning frustration and ensure stability. During plant operations, it seems that tuning control loops is an ongoing task, which can be a continual frustration to ...