نتایج جستجو برای: pressure calculation
تعداد نتایج: 504906 فیلتر نتایج به سال:
The Michelsen stability and multiphase flash calculation by direct minimization of Gibbs free energy of the system at constant temperature and pressure, was used for systems containing gas hydrates. The solid hydrate phase was treated as a solid solution. The fugacities of all components of the hydrate phase were calculated as a function of compositions by the rearranged model of van der Wa...
the goal of this research is the derivation of method for evaluation of efficiency improvement potential for district heating systems with focus on variable speed centrifugal pump. the effectiveness of the usage of the proportional pressure control is compared with the constant pressure control. this is why, energy calculation analyses have been realized for variable speed centrifugal pumps, an...
BACKGROUND Central to the design of a randomised controlled trial is the calculation of the number of participants needed. This is typically achieved by specifying a target difference and calculating the corresponding sample size, which provides reassurance that the trial will have the required statistical power (at the planned statistical significance level) to identify whether a difference of...
With the implementation of regional coordinated development strategy, traffic flow has grown explosively. The construction a larger tunnel section becomes an effective way to solve highway network’s insufficient transport capability problem. Currently, there is little research on factors influencing and methods calculating loose pressure in surrounding rock mass for tunnels with super-large cro...
In a literature search on the coupling of wind-generated pressure fluctuations into seismic noise, it was noticed that expression for angular tilt induced by in seminal paper “A preliminary investigation relationship between long-period noise and local atmospheric pressure” G. Sorrells only valid at surface. A which cites performed to see if any subsequent research corrected this error, what ef...
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