What is the energy balance equation of the Positive-Displacement Compressor (2P) block to calculate the fluid power? The documentation says the fluid power is equal to Wc_dot in the polytropic case, yet the Wc_dot does not equal to the energy flow or the enthalpy change of the refrigerant through the block. Wc_dot actually equals to mechanical power * mechanical efficiency based on my calculation using a test model. And the fluid power is equal to the enthapy change of the refrigerant in my test model, which corresponds to the isentropic thermodynamics model in the document. However, I am using the polytropic thermodynamics model in my test model.What is the energy balance equation of the Positive-Displacement Compressor (2P) block to calculate the fluid power? The documentation says the fluid power is equal to Wc_dot in the polytropic case, yet the Wc_dot does not equal to the energy flow or the enthalpy change of the refrigerant through the block. Wc_dot actually equals to mechanical power * mechanical efficiency based on my calculation using a test model. And the fluid power is equal to the enthapy change of the refrigerant in my test model, which corresponds to the isentropic thermodynamics model in the document. However, I am using the polytropic thermodynamics model in my test model. What is the energy balance equation of the Positive-Displacement Compressor (2P) block to calculate the fluid power? The documentation says the fluid power is equal to Wc_dot in the polytropic case, yet the Wc_dot does not equal to the energy flow or the enthalpy change of the refrigerant through the block. Wc_dot actually equals to mechanical power * mechanical efficiency based on my calculation using a test model. And the fluid power is equal to the enthapy change of the refrigerant in my test model, which corresponds to the isentropic thermodynamics model in the document. However, I am using the polytropic thermodynamics model in my test model. simscape, simulink MATLAB Answers — New Questions

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