View Full Version : split ac unit different capacity value
kefah
04-04-2014, 11:27 PM
Hi
how r u guys
im confused about the info on the name plate of different split ac unit
as example when u check the heating and cooling capacity u will find the cooling is 6740 watt
and heating is 7320 watt
http://im89.gulfup.com/68eP0g.png
also u can check in other split ac unit that the current
are different or same in cooling or heating
what is the reason
The Viking
05-04-2014, 02:31 AM
OK,
If we go back to fundamentals, the heat output from the condensor=the cooling duty of the evaporator + the heat added by the compressor.
Therefore the the capacity in heating mode will be higher than the capacity in cooling mode (heat=cooling+compressor).
In modern A/C systems, in order to optimise performance, the discharge pressure is elevated during the heating cycle. Higher pressure = higher temperature.
If you look at the spec of a compressor you will see that higher discharge pressure=higher current draw.
Clear as murky waters!
:cool:
kefah
05-04-2014, 07:14 AM
ok
thank u for the detailed explain
i red in the college some of what u mentioned
ok
why in some mini split heat pump unit the current for heating is lower than in cooling
as example
http://im89.gulfup.com/yNhswA.png
The Viking
05-04-2014, 11:09 AM
As they have chosen to keep the duties the same in both modes they will be able to run the compressor at a reduced duty whilst in heating mode. (If we follow the same principle as above)
:cool:
moideen
05-04-2014, 07:00 PM
As they have chosen to keep the duties the same in both modes they will be able to run the compressor at a reduced duty whilst in heating mode. (If we follow the same principle as above)
:cool:
I think they (konka) have done some mistakes on writing heating capacity. It is simple 2 ton system. Look at the power input, it is different. I googled for the catalogue, no found.this is Chinese made,there is chance for mistakes..........:o
kefah
05-04-2014, 07:30 PM
I think they (konka) have done some mistakes on writing heating capacity. It is simple 2 ton system. Look at the power input, it is different. I googled for the catalogue, no found.this is Chinese made,there is chance for mistakes..........:o
thank
what about this unit
its LG Korean made
http://im89.gulfup.com/68eP0g.png
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