Fig. 3. Steady-state temperature (T) profiles as affected by insulation thickness for 30°C ambient temperature: (A) the long, narrow cell, (B) the long, wide cell, (C) the short, narrow cell, and (D) the short, wide cell. Insulation methods included fiberglass insulation at 3.8 cm (F38) and Reflectix insulation at 1.6 (R16) and 4.8 (R48) cm (Table 2).