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Posted by Noon-Air on August 3, 2006, 9:20 pm
> New Directions In Building Services (Australia) wrote:
>> > >> Dear Engineers
>> > >> I would like to know how walkin freezer is designed.
>> > >> For example A freezer of size 10ft X 10ft and 9 ft high (rooms
>> > >> inside
>> > >> dimensions) with assumption that we have the required insulation in
>> > >> place.
>> > >> The ambient Design Temperature being 40 deg Celcius
>> > >> Required Room temperature minus 20 deg celcius
>> > >> and air cooled condensor to be considered
>> > >> the piping (distance between the evaporator and compressor to be 30
>> > >> meters horizontally)
>> > >> required is the evaporator and compressor selection, pipe size.
>> > >> Regards,
>> > >> Donald
>> > > CHeck with the guys at your local supply house... they can set you up
>> with
>> > > a correctly matched system to go into a proper box.
>> > Thats great Steve, the industry needs more contractors too tell the DIY
>> > to
>> > go to our suppliers to buy stuff, thats gotta help the trade a great
>> > deal...........
>> > Rich
>> Ok - So you've got a room volume of about 25m3 and you desire a split of
>> 60degC and I'll assume a room RH of 85% Fabric Loads are about 0.5kW and
>> expected air change infiltration about another 0.5kW. However the main
>> variables are what are you going to put in there eg if you put 500kg of
>> Beef
>> and say 500kg of pork in there at an entering temperature of 15 degC and
>> you
>> need it to get down to temperature in 10 hours then a 15kW unit would
>> suffice, but if you wanted the same load dropped in 1 hour, then you'd
>> need
>> 125kW. So make sure you include all of the answers to the questions that
>> I
>> might think of before you ask for a generic design solution - because
>> there's really no such thing!!!!!!!!!!!
> Yes I now realise what type of idiots i asked this questions.
You still haven't figured out what kind of idiot questions you are asking.
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> >> I would like to know how walkin freezer is designed.
> >> For example A freezer of size 10ft X 10ft and 9 ft high (rooms inside
> >> dimensions) with assumption that we have the required insulation in
> >> place.
> >> The ambient Design Temperature being 40 deg Celcius
> >> Required Room temperature minus 20 deg celcius
> >> and air cooled condensor to be considered
> >> the piping (distance between the evaporator and compressor to be 30
> >> meters horizontally)
> >> required is the evaporator and compressor selection, pipe size.
> >> Regards,
> >> Donald