SHORT WAVE BROADCASTING TRANSMITTER HEAT REJECTION

[schola]

Dear friends:

I´m estimating cooling load for 100 KW broadcast transmitter room.

Do you have any index I could use for estimate heat rejection from the transmitter?
Thanks,

schola

 

[imok2]

If it's digital the technique used in these transmitters is extremely efficient (90%) as opposed to about 64% with the old high level plate modulated vacuum tube transmitters. That is, the older transmitters might use 78,000 watts to obtain a 50,000 watt output signal where the modern, solid state transmitters might use 55,000 watts to obtain a 50,000 watt output signal. This should give you a start point, but why don't you get ahold of the mfg and find out the facts?

 

[stanlsimon]

If this is an existing installation you should be able take an amp reading on the electrical panel which serves the equipment. Total power= v*a* pf Then use the efficiencies in the previous post to determine how much power is being dissipated in the equipment room.