Temperature units

[BPP]

Hi everyone.

I am doing a simple calculation, but I have problems in the temperature units, which generates erroneous results.

A quick solution in this case would be to work the temperature without units. However, is there a way to work with units in this type of equations without getting wrong results?

Thanks for the help

[StuartBruff]

I haven't got Mathcad available at the moment to check, but Mathcad internally stores temperatures as kelvin. Consequently, your T2+Tperd will be about 338 K + 278 K = 616 K, giving deltaT = 333 K (which is about 60 deg C).

You need to take this into account. There is a ways of dealing with this in unit, but I can't remember what it is ... look it up in help?

Stuart

[StuartBruff]

Yes, you have to use the delta C unit to represent temperature differences.

https://support.ptc.com/help/mathcad/r6.0/en/index.html#page/PTC_Mathcad_Help%2Fexample_working_with_temperatures.html%23wwID0EK5ZDB

[StuartBruff · Accepted solution]

Here's a confirmatory worksheet ...

Stuart

[BPP]

Great. Thank you very much Stuart.

[ValeryOchkov]