Hi. In the following figure it is seen that the units were not simplified properly.


Best regards
Alan

The management of temperatures in Celsius degrees has been repeatedly discussed in this forum (I invite you to try and read the previous discussions). Probably still the developers have not managed to get a perfect result for all situations; nevertheless, following some preliminary steps and acting manually with small adjustments it is possible to obtain consistent results. As in the image below:
[albumimg]1517[/albumimg]
sergio

Wrote

In the following figure it is seen that the units were not simplified properly.

Rarely, Unit System is usable ... too much SI wrt Engineering works.

Alan
Jean has been championing not using units forever ... since Mathcad days on PTC forum

Most of us like the CAS with the units to help. Temperature units are a strange bird and you need to work around text book scripts. For heat transfer equations, I define/explain that the units need to be "Delta F (Delta C)" in order to use the software's capability. SMath follows a similar convention to Mathcad (8-15). Small price to pay for automation.

With that said, I will run the numbers without units (ala Jean)on a calculator to confirm that the equation is correct first. If you graph, which Jean does a lot, you will need to cancel the units out.

section units temperature.sm (33 KiB) downloaded 48 time(s).

Thanks.



Be confident including old users, like me!

Best regards.
Alvaro.