| Conceptual Reference Database for Building Envelope Research |
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| Essay:implementation of energy balance"To obain T of a fluid flow reuires the energy equation. Its basic form as well as the fomulation for a mixture of perfect gases are well know. For building phusics application energy balance can be written in two equivalent manners:1. Using internal energy; 2. Using the enthalpy, assuming that the total pressure remains constant change rate of Total enthalpy (Ut or Ht) = internal heat generation + conductin heat flow through all protions of solid boundary + enthalpy flow through all portions of fluid boundary
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