An internal combustion engine, whether diesel or gas, transforms the energy of the fuel into mechanical or electrical energy (40%), while the rest is dissipated as heat:
- 25% of energy is lost in the cooling of the engine main circuit (jacket and cylinder heads)
- 23% is lost in exhaust gases
- The rest in oil cooling (4%), intercooler (5%) and radiation (3%)
The principle of cogeneration is, precisely, to use the heat generated from another process (drying products, heating spaces or processes, generating steam…). However, there are applications in which this heat is not used or only used partially. The ENERBASQUE HRU machine may use the heat from the engine main circuit (which is normally between 85 and 95ºC), exhaust gases (with a temperature close to 300ºC) and even a combination of both to generate electricity and increase the overall efficiency of the engine.
Thus, with the same fuel we generate a surplus of electric KW.