By discussing the characteristics of the torpedo turbine engines energy supply system, the scheme of the fish torpedo engine sources supply is demonstrated, and the three-speed pressure valve is designed. The author builds the dynamic process simulation calculation plant for the thermal engine thrust system which is based on the fix quantity fuel pump and pressure control valve.
Explores and compares three actual cases of system connection between high rise and low rise parts in a heating quarter, namely a dual tank system, a direct pressure regulating valve system and a proportional relief pressure valve system, in aspects of system arrangement, operation and problems encountered, and summarises the comparison results.
We present a mathematical model of marine refrigerator systems for a 5440TEU container ship. First, component models are established such as the compressor model, the condenser model, the expansion valve model, the evaporating pressure regulating valve, the evaporator model, the refrigerating room model as well as the refrigerant confluence model etc. Then the whole system model is got by connecting each component models according to the relationship in the real system.
This paper presents a mathematical model for theoretical analysis of refrigeration cycles with two-stage evaporating temperatures,and makes a COP comparison between conventional refrigeration cycle with evaporating pressure adjustment valve and 3 cycles with ejectors.
The new control system consists of a fast interpolation device for fast approaching the set pressure and a fast-response pressure control valve incorporated with a PID controller to accelerate and fine-tune the steady output.
The cuff was connected to a pressure control valve, which rapidly changed the cuff pressure so as to maintain a null pressure difference across the finger arterial wall.
A pressure control valve regulates the supply pressure within 5-6 bar to ensure reliable fuel charge of the injection pumps.
A pressure control valve set at 40 psi was utilized to monitor and control the propane pressure in the line.
A pressure control valve in the hydraulic system detects when more power is needed and switches to a higher pressure stage.