Heat capacity is defined as: C = ΔQ/ΔT. Since work is being done but there is no change in internal energy, ΔQ > 0. However, since it is isothermal, ΔT = 0. So what is the heat capacity, ΔQ/ΔT at all pressures (points) on the isothermal curve?maurice2705 said:
Heat capacity in an ideal engine refers to the amount of heat energy that is required to increase the temperature of the engine by one degree Celsius. It is a measure of the engine's ability to store and transfer heat.
The heat capacity of an ideal engine is directly related to its efficiency. A higher heat capacity means that the engine is able to store and transfer more heat, resulting in a more efficient conversion of heat energy into mechanical work.
The heat capacity of an ideal engine depends on several factors, including the type of fuel used, the design and materials of the engine, and the operating conditions such as temperature and pressure.
The heat capacity of an ideal engine can be increased by optimizing the design and materials used, and by improving the combustion process to produce more heat energy. However, it cannot be increased beyond a certain point due to the laws of thermodynamics.
Heat capacity in an ideal engine is typically measured in units of joules per degree Celsius (J/°C) or specific heat capacity in units of joules per kilogram per degree Celsius (J/kg·°C). These measurements can be obtained through experiments or calculated using thermodynamic equations.
