Therefore it is in urgent need to develop and promote the heat supply system of low steampressure heat pump, in which the steamworkingpressure is below 0.
通过设计、研究和生产运行实例，分析了低压蒸汽热泵的技术要点及推广价值。
2
The top steam discharge valve discharge distance could regulate to maintain the workingpressure.
顶部排汽阀的开度应调控，以保持连排内的工作压力。
3
The changes of steampressure and temperature canont influence the trap. It sas good working characteristic.