Why are the results different every time I calculate?

2009-03-10View Original

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I noticed that in my simulations, the calculated value for water changes each time; I’m not sure why. Everything else remains the same, but the enthalpy of water is different. The order of magnitude is the same, but the specific values differ. I don’t know what’s going on

Reply #22009-03-10

Could you be more specific? I can’t say for sure without knowing the specific conditions

Reply #32009-03-10

It’s just air at room temperature, containing moisture, nitrogen, and oxygen; when it enters a heat exchanger with a heat load of 0, the enthalpy value of the gas that comes out is different from that of the original gas. I don’t know why. The main purpose of doing this is to find out what the enthalpy of the air is in this state

Reply #42009-03-10

I don’t know why the original poster set the heat duty of HEATX to 0

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Why are the results different every time I calculate?

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