導熱油循環(huán)泵#WRY高溫熱油泵【交往以信以誠】【常州市武研熱油泵有限公司】NPSH是由泵本身(吸水室和葉輪進口部分的幾何參數(shù))決定的。對于既定的導熱油循環(huán)泵,不論是哪種介質(zhì)(除了黏性大的介質(zhì)因為影響速度分布),在一定轉(zhuǎn)速和流量下流經(jīng)泵進口,因為速度大小相同所以有相同的壓力降,也就是說NPSH相同。所以NPSHr與液體的性質(zhì)無關(guān)(不考慮熱力學因素)。導熱油循環(huán)泵#WRY高溫熱油泵【交往以信以誠】。導熱油循環(huán)泵#WRY高溫熱油泵【交往以信以誠】。NPSH is determined by the geometrical parameters of the pump itself (suction chamber and impeller inlet part). For the established pump, regardless of which kind of media (except for viscous large media because of the impact velocity distribution), in a certain speed and flow down the pump inlet, because the same rate of the same pressure drop, which means that the same NPSH. So NPSHr has nothing to do with the nature of the liquid (not considering the thermodynamic factors).
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2015.8.8張