Trailer and Power Generator
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From: GregS on 25 Jun 2010 15:19 In article <i02m8o$3ud$1(a)news.eternal-september.org>, "vaughn" <vaughnsimon(a)gmail.invalid> wrote: > >"whit3rd" <whit3rd(a)gmail.com> wrote in message >news:7b4cc133-9a34-4efa-82ef-5925b23b387f(a)a30g2000yqn.googlegroups.com... >>...a freezer indoors costs you twice,once >>in freezer electricity and (in summer) again in airconditioning cost. > >Actually, the situation is not nearly so simple. In terms of the BTU's of heat > >that are pumped out of the freezer into the room, they are the *very same* heat > >BTUs that leaked from the room into the freezer. So that turns out to be a >wash. Further, the freezers would operate a bit more efficiently in the cooled > >space because 1) There would be less delta-T across the insulation, so less > heat >loss + less compressor operation, and 2) the condenser would operate a bit >more efficiently in the cooled room because it would see a larger delta-T. On >the other side of the equation, all of the waste heat (I squared R loss + core >loss) from the compressor motors and (if any) fan motors would appear as heat >load to the AC. > >Vaughn With surround coils imbedded under the sheetmetal, the differential is more constant. How thick the insulation is more important. greg
From: Gunner Asch on 26 Jun 2010 06:20 On Wed, 23 Jun 2010 20:56:12 -0500, "amdx" <amdx(a)knology.net> wrote: > Hurricane season is coming and I needed to get a source of emergency >power to keep my business inventory frozen >if we do lose power. I don't have a convenient place to permanently place >the generator, so I decided to put it on a >trailer. Now I can store it in the back yard and move it near the house as >needed. > I was almost ready to buy the Honda EU6500isa for $3,400 but found the >Miller Bobcat 250 for $3,389 with >58% more watts and I think the welder will hold it's value better, so I >bought the Miller. > >I got the trailer from Harbor Freight, Regular price $259.99 on sale for >$199.99 but I was only billed $179.99. :-) >http://www.harborfreight.com/1090-lb-capacity-40-1-2-half-inch-x-48-inch-mini-utility-trailer-with-12-inch-four-lug-wheels-and-tires-90153.html > > I bought a Miller Bobcat 250 welder with 9,500 watts continuous power. >http://www.harrisweldingsupplies.com/millerwelderbobcat250.aspx > Check their ebay price, $100 cheaper but they offered the ebay price to me. > >Pictures below. > >My son helping with assembly in the living room. Air conditioned workshop >(wife was working) >http://i395.photobucket.com/albums/pp37/Qmavam/P1013355.jpg > >Trailer assembled except for fenders. >http://i395.photobucket.com/albums/pp37/Qmavam/P1013356.jpg > >Trailer with 3/4" plywood base. >http://i395.photobucket.com/albums/pp37/Qmavam/P1013357.jpg > > Trailer with welder mounted, Balance worked out well, about 30 lb tongue >weight. >http://i395.photobucket.com/albums/pp37/Qmavam/P1013366.jpg >I can push it around the yard myself. > Welder is 560 lbs, trailer rated at 1090 lbs. >Don't have plans to tow it on road, but trailer came with title, fenders and >lights. > >I'll be adding a drop on cover to keep the rain off. >Cover design thoughts still churning. > > Mike > Put a nice well made minimum 3/8" chain though the top lifting loop and secure it with an Abus lock, around something very hard to cut. Nice rigs like this..tend to disappear to Mexico/etc etc Gunner One could not be a successful Leftwinger without realizing that, in contrast to the popular conception supported by newspapers and mothers of Leftwingers, a goodly number of Leftwingers are not only narrow-minded and dull, but also just stupid. Gunner Asch
From: amdx on 26 Jun 2010 07:05 -- MikeK "Gunner Asch" <gunnerasch(a)gmail.com> wrote in message news:20lb26p8bb2jsnnuoi9ooasmlaumil0ant(a)4ax.com... > On Wed, 23 Jun 2010 20:56:12 -0500, "amdx" <amdx(a)knology.net> wrote: > >> Hurricane season is coming and I needed to get a source of emergency >>power to keep my business inventory frozen >>if we do lose power. I don't have a convenient place to permanently place >>the generator, so I decided to put it on a >>trailer. Now I can store it in the back yard and move it near the house as >>needed. >> I was almost ready to buy the Honda EU6500isa for $3,400 but found the >>Miller Bobcat 250 for $3,389 with >>58% more watts and I think the welder will hold it's value better, so I >>bought the Miller. >> >>I got the trailer from Harbor Freight, Regular price $259.99 on sale for >>$199.99 but I was only billed $179.99. :-) >>http://www.harborfreight.com/1090-lb-capacity-40-1-2-half-inch-x-48-inch-mini-utility-trailer-with-12-inch-four-lug-wheels-and-tires-90153.html >> >> I bought a Miller Bobcat 250 welder with 9,500 watts continuous power. >>http://www.harrisweldingsupplies.com/millerwelderbobcat250.aspx >> Check their ebay price, $100 cheaper but they offered the ebay price to >> me. >> >>Pictures below. >> >>My son helping with assembly in the living room. Air conditioned workshop >>(wife was working) >>http://i395.photobucket.com/albums/pp37/Qmavam/P1013355.jpg >> >>Trailer assembled except for fenders. >>http://i395.photobucket.com/albums/pp37/Qmavam/P1013356.jpg >> >>Trailer with 3/4" plywood base. >>http://i395.photobucket.com/albums/pp37/Qmavam/P1013357.jpg >> >> Trailer with welder mounted, Balance worked out well, about 30 lb tongue >>weight. >>http://i395.photobucket.com/albums/pp37/Qmavam/P1013366.jpg >>I can push it around the yard myself. >> Welder is 560 lbs, trailer rated at 1090 lbs. >>Don't have plans to tow it on road, but trailer came with title, fenders >>and >>lights. >> >>I'll be adding a drop on cover to keep the rain off. >>Cover design thoughts still churning. >> >> Mike >> > > > Put a nice well made minimum 3/8" chain though the top lifting loop and > secure it with an Abus lock, around something very hard to cut. > > Nice rigs like this..tend to disappear to Mexico/etc etc > > Gunner > Yes Gunner, My thought is, once I park it, I'll put it up on blocks and take the wheel/tires off and store those elsewhere. Mike
From: JosephKK on 26 Jun 2010 07:48 On Thu, 24 Jun 2010 10:36:39 -0500, RoyJ <Spamless(a)microsoft.com> wrote: >Good comment about testing fully loaded. I just picked up a 20 kw >electric furnace heating assembly. I'll derate it by running the >elements on 120 rather than 240, makes for a nice switch selectable 5 kw >load bank. The OP could make do with 2 or 3 stove burner elements. >> >> Also when you wake up at 3AM worrying about mice, consider doing a >> exercise run of the generator set. Run for about an hour or so (fully >> loaded) at least every 30 days, and at critical times, maybe every two >> weeks. Also don't forget to keep the battery charged! (and to have >> fuel, lots of fuel, on hand...) Check the _actual_ draw on the heater assembly at 120 V (with proper air or water running through it). It may turn out to be anywhere from 2 kW to 10 kW.
From: JosephKK on 26 Jun 2010 08:02
On Thu, 24 Jun 2010 15:09:26 GMT, zekfrivo(a)zekfrivolous.com (GregS) wrote: >In article <hvvr99$cg1$1(a)news.eternal-september.org>, "vaughn" <vaughnsimon(a)gmail.invalid> wrote: >> >>"hamilton" <hamilton(a)nothere.com> wrote in message >>news:hvvoma$7od$1(a)news.eternal-september.org... >>> Is this an air cooled generator ?? >>> >>> Can an air cooled gen run for 24/7 ?? >> >>Yes, no reason why not. That said: there is a vague classification of >>generators called "Prime Power" generators that are truly made to run 24/7/365. >> >>This is a portable "standby" generator, so is not made to that standard (not >>even close!) but is fine for occasional duty that may run into weeks. >> >>> >>> I thought that they need to be shut down every few hours. >>> ( I don't know any better ) >> >>An air-cooled generator loaded and used within its specifications will get as >>hot as it is going to get in 15 or 20 minutes. perhaps sooner. There would be >> >>no reason to let it "rest" every few hours, except to give your ears a rest, >>save fuel, and check the oil. > > >How about refuel. > >Of course I have done that without shutting off during amateur field day. >I did like to check the oil. > >You should have a shut offf valve after the fuel tank, and this is >absolutely required for storage inside. > >You can make sound baffles for noise. > >Ground rods are nice. > >Exactly how your going to connect to devices is always interesting. > Oohhh. Good point, if this is going to be used for backup power for an all metal boat there are special requirements that need to be met. |