Choosing correct electrical heater

[mkardehi]

In case of using mixing box atached to single rooftop package unit , I want to use electrical heaters in case of heating in winter In which all the components stop except evaporator fan .... Calculated load is 36 KW , what size of electrical element I should use ? I mean the electrical consumption of heaters
should I use 36 KW heater or less is sufficient ?
thanks in advance

[malik55]

If you want to heat a comfort air system then you can calculate by formula,
P= Q X 0.36 X (T2-T1)
where
P= heating power in watts
Q= air flow m3/h
T1=temperature in coming air *C
T2=required temperature out going air *C

[mkardehi]

Thank you malik.
but you didn't get my question
as in your formula I calculated P as 36 KW
I want to know which size of electrical heater I should by for producing 36KW heating capacity?

[nike123]

Thank you malik.
but you didn't get my question
as in your formula I calculated P as 36 KW
I want to know which size of electrical heater I should by for producing 36KW heating capacity?

36 kW of electrical heater!
That is his electrical power consumption AND his produced heating capacity.

[mkardehi]

Your answer is really shameful nike

[boy]

mkardehi,

do you mean diameter and length of electrical heater?

REGARDS<

[nike123]

Your answer is really shameful nike
Why shameful? I answered your question! If you meant what dimension, it cannot be answered correctly, because it could be many dimensions and shapes for same power output.
You got meaningful answer to your question.
Rephrase your question in order to get answer which will satisfy your need.
I am not mind reader, and I don't see any reason for you to be offended by my answer!

[mkardehi]

sry NIKE it was a problem of misunderstanding and difference in languages
I am so sorry
Thank you all , I got my answer

[malik55]

Good manners young man
:mad::(:rolleyes::cool::p;):D:)