Self Pumping by Means of Power Cycles

摘要

Power cycles for transporting solar heated circulant downward to the thermal energy storage (TES) are treated as external (heat source is solar heated circulant and heat sink is circulant emerging from TES) or internal (circulant is itself the power cycle working fluid). Assuming collector temperature is about 120 to 160 exp 0 F, external power cycles for circulating air (TES outlet 80 exp 0 F) or water (collector temperature rise = 20 exp 0 F) are feasible, but with a performance penalty of several degrees for air. The internal power cycle with air is not feasible. Internal and external power cycles for water/water vapor latent heat transport are feasible. (ERA citation 04:002895)