Convection bonds and “pseudo” bonds Even in the simplest case of matter transport, power has two components, one due to the rate of work done, the other due to transported internal energy of the material. “Pseudo” bond graphs depict two distinct bonds. One (the solid lines in figure b) depicts pressure and mass flow rate. The other (the dotted lines in figure b) depicts temperature and energy flow rate (i.e., power). Neither of these effort-flow products is power flow. Furthermore, the mechanical power due to volume change is notassociated with the rate of volume change but is added via a controlled source.
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