Such assumptions include numerical values, e.g. operating temperatures and pressures, and modeling assumptions, e.g., whether or not to consider a turbine as isentropic. Perform sensitivity analyses to understand how different choices of your design contribute to its performance. For example, CyclePad can figure out how the efficiency of a system changes as a function of other parameters, such as a turbine inlet temperature. CyclePad performs steady-state analyses of both open and closed cycles. In an open-cycle, it is the components that are open to the passage of mass through them, while in a closed cycle different processes take place within a single component.
Gas turbines are therefore open cycles, and piston engines are closed cycles.
Note that a closed-loop steam cycle containing a boiler, turbine, condenser, and pump is still considered to be an open cycle. CyclePad works in two phases, build mode and analyze mode. Numerical values for the properties of components and stuffs As soon as you give CyclePad some information, it draws as many conclusions as it can about your design, based on everything you have told it so far. When you specify a working fluid, for instance, it knows whether to use property tables or an ideal gas approximation . When you specify numerical values, CyclePad sees if it can then calculate other numerical values.