02-05-2019, 09:03 PM

(02-05-2019, 08:26 PM)Antti-L Wrote: I did test the example I provided, and it worked well, with partial load efficiencies as defined. I verified the partial load operation from the results.

I am not able to reproduce your issue without the model files. Anyway, your specification looks somewhat odd to me, because your minimum stable operation level is 70%. It means that the technology cannot operate below the 70% load (seasonal shut-downs / star-ups of units are of course possible).

I can provide the .dd and .run files (attached). This 70 % load, I have just given for checking. In my case, the capacity of MINELC (input process to electrolyser) was 90 kW which is 60 percent of the electrolyser capacity (150 kW). Therefore, the electrolyser should not work since the minimum stable level defined is 70 %, right?. Just now I ran the model with 0.4 ACT_MINLD. I was expecting a drop in efficiency of electrolyser. But this is not happening.

I wanted the output of electroyser in kg of hydrogen. Considering 54.97 kWh energy requirement for 1 kg hydrogen, I have given a CAP2ACT of 8760/54.97=159.35 and an efficiency of 159.35/8760=0.01819 for the electrolyser.

My concern is why the calculation is not considering the attributes ACT_MINLD and ACT_LOSPL. In my final run, for example, the electricity input in one timeslice is 147,286 kWh and the output is exactly (147,286*0.01819= 2679 kg hydrogen). That means there is no drop in efficiency despite the input capacity of MINELC is 90 kW and the electrolyser capacity is 150 kW.

I have attached the .dd and .run files. Could you please have a look?