Efficiency of ORC Power Generation

look here Organic Rankine cycle (ORC)

How an Organic Rankine Cycle works and also the difference between ORC and a steam Cycle.

I would check our website, www.kgraenergy.com for further insight into applying ORC for waste heat recovery in various industries

Hi Hangwaiter,

It depends on the temperature difference of the "hot source" and "cold source" and the organic material working as "Fluid Thermodynamic," at Rankine Cycle. Focusing on solar power generation, assuming hot source at 300°C and cold source about 25°C and working fluid "NH4OH", if you prefer, "Green Freon", calculate system efficiency about 12%.

However, does not seem that the issue is the low efficiency of the "ORC Cycle" working at "LOW" temperature in the hot source. The solar heat is free, renewable and does not pollute the environment! In addition, it is feasible to store solar heat in the soil, for example, in a adequate stone, thermally insulated. So, the economic and technical differences between PVs and solar thermal power plants would be very interesting! PV Systems are more expensive! This means, more Money per Watt produced, and much more expensive in Watts consumed during the period of energy demand (kWh) in "AC" Power Plants ( 50 or 60Hz). However, PVs are "pretty "and JUST SO APPARENT work simpler for financial capital. I mean marketing, business and other interests more distant from the field of engineering.