|
Alexandros, Type1288 is appropriate for applications in which the working fluid's thermal properties change with temperature. The other two models (Types 1257 and 536) assume constant properties over the working temperature range. The Type1257 model is designed around a few particular test procedures used to characterize the performance of parabolic concentrators. You should use that model if you have the parameter data that it requires. As far as an ORC engine component is concerned, we have usually modeled these quite simply using a generic performance map component such as Type42. You'll define the engine's COP as a function of a few variables of interest (low and high temperature sinks for example) and then enter this performance data into an external file to be read by Type42 during the simulation. I need a little more information in order to make a recommendation about the geothermal source. Are you talking about using the ground as thermal storage or using it as an actual source of energy (like a very very deep mine or heat exchanger) Kind regards, David On 12/9/2014 12:51, ALEXANDROS
PECHTELIDIS wrote:
-- *************************** David BRADLEY Principal Thermal Energy Systems Specialists, LLC 22 North Carroll Street - suite 370 Madison, WI 53703 USA P:+1.608.274.2577 F:+1.608.278.1475 d.bradley@tess-inc.com http://www.tess-inc.com http://www.trnsys.com |