hello sir,
i am mechanical engineer with good experience of the hvac field, i have some hvac work i made before here at my portfoilio, you can refer to if you wanna take a look, its hvac assignment with psychometric chart and some calculations
also, i have done that job at the real life
so let me see what you have, is it assignment work?, or real project you need help with?
hope to hear from you today, and i hope i can help,
regards,
engineer gaber