A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger. Effects of aspect ratio and amplitude are considered. Working fluid is geothermal water at hot side. R-245fa is u...
A series of numerical simulation has been carried out to study thermo-hydraulic characteristics of a primary surface type heat exchanger. Effects of aspect ratio and amplitude are considered. Working fluid is geothermal water at hot side. R-245fa is used at cold side which is for ORC(Organic Rankine Cycle). Nusselt number is presented for the Reynolds number(50≤Re≤150). The result shows that the higher aspect ratio channel gives better heat transfer efficiency.