Abstract
Pneumatic booster valve is widely used in local pressure boost circuit for energy saving, a new booster valve with energy recovery (short for BVER) was proposed in this paper in order to further improve the energy efficiency. Firstly, the principle of BVER was introduced by comparing with the traditional booster. Based on flow-rate characteristics equation, gas state equation, energy conservation equation, etc., the mathematics model of BVER was established, and the flow-rate characteristics, boost ratio, pressure in tank and energy efficiency were systematically analyzed by simulation. Lastly, the model was verified by experiments. This study shows that: firstly, the pressure decreased sharply with the flow-rate’s increasing, and the pressure in tank is much lower than in BVER. Secondly, the boost ratio was affected by supply pressure, regulator coefficient and the diameter of recovery chamber. Thirdly, the pressure fluctuation in tank decreases with the tank volume increasing, and the pressure fluctuation is less than 1% when tank volume is larger than 10L. Lastly, the energy efficiency will increase 5∼10 percent with the boost ratio increases 15∼25 percent under different supply pressure. This study proves that BVER has better performance than VBA for its high boost ratio and high energy efficiency, and it provides a reference for booster valve’s design and energy saving.
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