Result

The difference between both enthalpies is the energy per mass unit that each envelope is able to isolate. This result receives the name of "equivalent energy" and is represented by Δh from now on. An example of the calculation process can be seen in Figure 3 and Table 2.

**Figure 3.** Psychrometric chart detail. The enthalpy values for a wigwam and for a pueblo dwelling on January 2 are marked [70].

**Table 2.** Environmental Conditions Corresponding to January 2 at 14:00h in the Pueblo of Taos.


h: enthalpy; Δh: equivalent energy.
