Summer is a great time to visit Sedona because the weather is warm but not nearly as hot as the infamous triple-digit days typical for Phoenix, Scottsdale and the rest of the Valley of the Sun. In fact, summer is the season for Valley residents to escape to Sedona and find relief in the 90-degree weather!
Based on the Aly and Lee model, the variation of the ideal gas heat capacity at constant pressure of several hydrocarbons (methane through pentanes) and non-hydrocarbons (O2, N2, H2, CO2 and H2O) as a function of temperature are presented in Figures 1 and 2, respectively.
We next want to arrive at a form of the energy balance for the case where heat. capacities are strong functions of temperature over a wide temperature range. Under these conditions, the mean values used in Equation (8-30) may not be. adequate for the relationship between conversion and temperature.