Dear All, I try to simulate active panel with PCM material using type 399. So far I don’t have problem with passive panel (without flow in pipes), but when I set mass flow rate higher than 0 (72 or 100 kg/h) I get error: *** Fatal Error at time : 0.100000 Generated by Unit : 10 Generated by Type : 399 Message : specific massflow - use more segments - see type description I have also try to increase number of loops (n_loops), but it isn’t help. I noticed that the same problem is in Type 399 example… Example work when flow is 0, if not the same error appear. I would be grateful for any advice. Kind regards, Karol Bandurski --------------------------------------------------------------------------- Karol BANDURSKI Ph.D, Assistant Professor Faculty of Environmental and Energy Engineering Division of Heating, Air Conditioning and Air Protection Poznan University of Technology https://www.researchgate.net/profile/Karol_Bandurski *** dr inż. Karol BANDURSKI, Adiunkt Wydział Inżynierii Środowiska i Energetyki Zakład Ogrzewnictwa, Klimatyzacji i Ochrony Powietrza Politechnika Poznańska |