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How to calculate the Airconditioner capacity for a standard
telecom BTS shelter?
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Answer Posted / chandrashekar
Genarally 1 Ton capacity means---The cooling produced by
melting of 1 ton of ice in a day is.taken as unit of
refrigeration (in tons). Now unit of refrigeration used in
S.I. System is KW. 1 ton of refrigeration = mass of ice x
latent heat of ice / 24 hrs i.e
= 900 kg x 335 KJ/Kg ( one short ton = 900 kgs )
---------------------
24 x 3600 secs
= 3.4895 KJ/Sec Now we should convert KJ to KW i.e 1KJ=1KW
so 3.5 KJ / Sec = 3.5 KW
that is 1 ton of refrigeration = 3.5 KW
Always in telecom sheleters we shold take the load of BTS
For Ex: In shelter there are 4Nos of BTS,If each BTS is
consuming 20A the total Amps for 4BTS is 80A.
So The total Load of the BTS is P=VI i.e
P=230*80=18400Watts i.e 18.4KW Now each 1Ton =3.5KW we can
suggest for 5Ton of AC for 18.4 KW
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