Air compressors work - Compression process
To understand how to save the energy in compressed air system , it is useful to start with theory background of how the air compressors work and how the energy is consumed. As we know from Thermodynamic principle that the compressor work is, where: rev = reversible in = input Our objective is to minimize the air compressor work that means to approach the reversible process i.e. minimize the friction, and turbulence Practical way to do this is to make v (specific volume) small by maintaining T (temperature) at low temperature during compression because v a T. In other words, to reduce the work input to a compressor, air should be cooled as it is compressed. Effect of Cooling Isentropic process: No cooling during compression Polytropic process: Involve some cooling Isothermal process: Involve maximum cooling Which process yields the minimum required compressor work? Let's consider the following equations of each process. Assumptions: All three processes are executed between the same...