Figure 18.3 Schematic of climatic wind tunnel facility fitted with a chassis dynamometer
during a prolonged test period. This thermal mass is of prime significance in sizing the associated heating and cooling systems.
The thermodynamic system of the chamber is indicated in Fig. 18.3 and the energy inflows and outflows during a particular cold test, in accordance with the methods described in Chapter 2, were as follows:
The thermal capacity (thermal mass) of the various elements of the system is defined in terms of the energy input required to raise the temperature of the element by 1?C.