Science > Physics > seek freezer compressor that is efficient under intermittent prime power
| Topic: |
Science > Physics |
| User: |
"" |
| Date: |
01 May 2005 11:47:30 PM |
| Object: |
seek freezer compressor that is efficient under intermittent prime power |
I want to run a freezer compressor directly from the shaft of a
windmill. Ie, varying /intermittent prime movements.
What flavor of compressor will perform most efficiently in this
application?
.
|
|
| User: "Happy Dog" |
|
| Title: Re: seek freezer compressor that is efficient under intermittent prime power |
02 May 2005 01:04:09 AM |
|
|
<alanh_27@yahoo.com> wrote in message news:
windmill. Ie, varying /intermittent prime movements.
What flavor of compressor will perform most efficiently in this
application?
Water cooled semi-hermetic. You should be able to find a used one cheap.
moo
.
|
|
|
| User: "" |
|
| Title: Re: seek freezer compressor that is efficient under intermittent prime power |
04 May 2005 01:12:56 AM |
|
|
could you elucidate, as to why this ian efficient set-up for this
application? I am not familiar with compressor characteristics
.
|
|
|
| User: "Happy Dog" |
|
| Title: Re: seek freezer compressor that is efficient under intermittent prime power |
04 May 2005 04:05:19 AM |
|
|
<alanh_27@yahoo.com> wrote in message
could you elucidate, as to why this ian efficient set-up for this
application? I am not familiar with compressor characteristics
Gotta ask: Do you have a clue about the subject? Anyway, semi-hermetic
compressors have a pulley driven crank. Dig? Your only other hope is to
create heat or electricity and drive an NG or propane type cooling system
(Einstein patented a cute one) or a Peltier Effect solid state one.
moo
.
|
|
|
|
|
|
| User: "" |
|
| Title: Re: seek freezer compressor that is efficient under intermittent prime power |
03 May 2005 10:28:05 AM |
|
|
After twenty years of working with do it yourself boat refrigeration
and writing four books on the subject, my advice is don't mount the
refrigeration compressor on a wind mill. First there is no practical
way to return the oil to the compressor and second the starting loads
are a problem.
If the daily heat loads of the box to be refrigerated are less than
12,000 Btu, a variable speed variable voltage DC compressor connected
to a wind generator could solve your problem. The power from the
generator can be stored in hold over tanks inside the refrigerator or
is batteries.
http://www.kollmann-marine.com
.
|
|
|
|
| User: "Brian Whatcott" |
|
| Title: Re: seek freezer compressor that is efficient under intermittent prime power |
02 May 2005 12:48:24 AM |
|
|
On 1 May 2005 21:47:30 -0700, wrote:
I want to run a freezer compressor directly from the shaft of a
windmill. Ie, varying /intermittent prime movements.
What flavor of compressor will perform most efficiently in this
application?
This sounds somewhat like the working characteristic of a water
pumping wind mill, for which the tradition was to use a multi blade
prop with good starting torque, inefficient though it is at speed.
If you are constrained to use a sizable fraction of the power of a
regular mill; then you might find it necessary to slip the drive until
there is available torque to spin the compressor.
Thinking further out of the box: the ammonia/hydrogen cycle or
something similar which demands only a heater might be a simpler
option - a wind mill could alway provide some heating, without the
startup potential barrier.....
Brian Whatcott Altus, OK
.
|
|
|
|
| User: "Noon-Air" |
|
| Title: Re: seek freezer compressor that is efficient under intermittent prime power |
02 May 2005 08:07:32 AM |
|
|
depending on how big the box is, you might want to consider using an
automotive type compressor. The expansion device, evap and condenser coils,
and desired temps(freezer is generally -10ºF)
<alanh_27@yahoo.com> wrote in message
news:1115009250.625945.83050@z14g2000cwz.googlegroups.com...
I want to run a freezer compressor directly from the shaft of a
windmill. Ie, varying /intermittent prime movements.
What flavor of compressor will perform most efficiently in this
application?
.
|
|
|
| User: "Noon-Air" |
|
| Title: Re: seek freezer compressor that is efficient under intermittent prime power |
02 May 2005 10:01:32 AM |
|
|
hit the send button too soon..... sorry...
"Noon-Air" <Noon-Air@comcast.net> wrote in message
news:L7GdnQ50x52Ju-vfRVn-vQ@comcast.com...
depending on how big the box is, you might want to consider using an
automotive type compressor. The expansion device, evap and condenser
coils, and desired temps(freezer is generally -10ºF) are going to be
determined by the box size, the refrigerent used, and a whole lot of other
design parameters.
<alanh_27@yahoo.com> wrote in message
news:1115009250.625945.83050@z14g2000cwz.googlegroups.com...
I want to run a freezer compressor directly from the shaft of a
windmill. Ie, varying /intermittent prime movements.
What flavor of compressor will perform most efficiently in this
application?
.
|
|
|
|
|
|
Related Articles |
|
|
