22-02-2012, 08:27 AM
You have forgotten to define the process transformation for the processes RESELC000 and INDHET000. For example, adding ACT_EFF(ACTGRP) for both of these processes would fix this problem. I just did that, and I immediately saw the process ECCGN producing both electricity and heat. However, because you have no heat demand, the heat is getting wasted in the heat balance, and not consumed by the demand process. You can prevent that by adding the parameter COM_LIM(FX) for HEAT, i.e. by making the HEAT balance fixed. I just tested that, and immediately saw the process INDHET000 consuming all the heat produced.
Note that NCAP_CHPR is the heat-to-power ratio in the back-pressure mode. You have used a very low ratio (0.67), which makes me suspect that the value may represent the power-to-heat ratio instead.
You could also have heat expressed in tonnes, but then I would suggest to model the efficiency in terms of electrical efficiency, and not the total energy efficiency. For a fixed BP turbine, you would then need to take into account the unit in the NCAP_CHPR value.