|
Hello everyone, I want to create an external file for type 53. According
to the manual I have to calculate “the ratio of the temperature difference
between the condenser water outlet and the evaporator water outlet relative to
a specified design temperature difference”. I calculated these ratios
based on manufacturers data at the following chiller conditions: - decreasing chilled water mass flow rate (representing
part load) - constant cooling water inlet temperature and therefore
decreasing outlet temperature - constant chilled water outlet temperature My file then looks like this: 0.00 0.78 0 0.05 0.79 0.08 0.10 0.81 0.17 0.15 0.82 0.25 0.25 0.84 0.42 0.30 0.85 0.46 0.40 0.87 0.49 0.50 0.89 0.55 0.60 0.91 0.60 0.70 0.93 0.66 0.80 0.95 0.74 0.90 0.98 0.85 1.00 1.00 1 When I run the simulation I get an error at the time
step the chiller is supposed to turn on: “The chiller is operating outside of the range
defined by the performance curve fit.” The question is now: Is the form of the file
incorrect? (which I don’t think) Or did I calculate the ratios wrongly? Thank you in advance Martin Bei Fragen bitten wir um Ihren Rückruf. |