Danfoss Compressor

[Kenji80]

Anyone knows what horse power is this compressor??

Is it a good compressor?

THanks.

[weisoon]

Not too bad. Danfoss is a company in Denmark. However, most of their compressors comes form Germany. HP comes in many sizes. If you going to DIY chiller using commercial chiller units and not household split units, then it may be quite difficult as Danfoss dealers here in singapore do not sell whole condensing/reefrigeration unit but mainly compressors only.

have you try to call sing lian to check availability?

[Kenji80]

So the Danfoss Compressor 6980 103G FR11G is how much HP?

Below is the link to it but I do not understand it. Can someone pls help?

http://de.refrignet.danfoss.com/TechnicalI...01_Cg43e202.pdf

THanks.

[Kenji80]

Anyone can help?

[Kenji80]

Nobody knows how to see the spec?

[lightningstrike]

i cant find the compressor no. 6980 in www.danfoss.com. it is a hermetic comp isnt it?

[Kenji80]

Yes bro, it is under hermetic compressors - R134a 220 -240V 50Hz - F series - FR11G, the below link is the specs of the compressor.

http://de.refrignet.danfoss.com/TechnicalI...01_Cg43e202.pdf

Thanks.

[lightningstrike]

compressor rating is 1/3 HP if i m not wrong.

[lightningstrike]

compressor rating is 1/3 HP if i m not wrong.

please disregard the above quoted as i find it very misleading.

the above rated is only the compressor motor power itself only......... ok ok, to make things less confusing, this is for the transparency for all to see. here goes:

Compressor Motor Size = 275W

where 1W = 0.001340483 H.P (Electric)

therefore, 275W = 0.3686327 H.P (Electric)

which is abt 1/3 H.P (Electric)

This is often mistaken as the HP of the compressor at max load, which is not. It is only the compressor rating for its motor size. the abovementioned H.P. is by no means the same or related with the latter, which i m gonna explain now.

the true H.P that we should be looking out for should be the power consumption of the compressor at max load. in this case, should be 445W at 5 degrees celsius.

12,000 BTU/HR = 1 ton of refrigeration = so called 1 H.P

where 1W = 0.0002843451 ton of refrigeration

445W = 1560 BTU/HR = 0.1265336 ton of refrigeration = 1/8 H.P

therefore, the power consumption at max load of 5 degrees celsius refrigerant in the compressor should be 1/8 H.P

juz for info,

ASHRAE is American Society of Heating, Refrigerating and Air-Conditioning Engineers.

CECOMAF is EUROVENT/CECOMAF. European Committee of Air Handling and Refrigeration Equipment Manufacturers.

The reason why there r 2 capacities given here is becoz of a diff in standards, where liquid temp for CECOMAF is at 55 degrees celsius and ASHRAE is at 32 degrees celsius.

if u take the capacity of the respective standards and divide it by the power consumption, it will give u the C.O.P, coefficient of performance.

e.g. capacity (ASHRAE) at max load = 996W

COP at max load = 996/445 = 2.17 W/W

hopefully, my calculations r correct this time round.