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#21
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for those 95+ deg days
If Bobbie did that, he scare the tourists so bad that they'd
have to report him as a whale that had commandeered a sail boat. Of course, since he doesn't sail, they'd just report him as a fat buffoon. "Capt. Mooron" wrote in message news Okay... so why are all your photos showing people dressed in coats???? I mean good gawd man... I sail in shorts and a tank top.... and that was last week.... even in the rain! CM "Bobsprit" wrote in message ... | .... and so far for you, it's been cold and rainy..... there is justice | after all! ;-D | | Temps yesterday topped 93. 100 expected today! | The AC works great...looks like a brutal summer. The 12v fridge is already | proving to be far nicer than I expected...really a life saver on a hot day. | | RB |
#22
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for those 95+ deg days
do they have air conditioning?
"Jonathan Ganz" wrote If you really want to save money and sail, either go with friends or charter. |
#23
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for those 95+ deg days
Nap sounds good. But first I'll explain more Ole Thom. A tube in tube heat
exchanger replaced the air cooled condenser. In this device, hot refrigerant vapor passes through a 5/16" O.D. tube, which has been sealed inside a 7/8" O.D. tube. At both ends of the 7/8" tubing, access fittings were installed to allow fresh water to flow through the 7/8" and outside the 5/16" tubing. In doing so, picks up the heat for removal from the cabin. The refrigerant compressor is the 2nd pump you seek. It moves the refrigerant through the 5/16". It leaves the compressor as a hot vapor and arrives at the expansion device (capillary tube) as a sub-cooled, high pressure liquid. A water pump moves the cool fresh water from the tube-in-tube condenser, through hoses, to the 2nd heat exchanger, which is just a roll of 5/8" O.D. copper tubing, which is dropped into the bay when the AC is used. Otherwise, this 2nd heat exchanger is stored neatly away in a locker (the 22' of 5/8" tubing was shaped to fit in the locker). There is no condenser fan needed, nor is there a need for the old air cooled condensing coil, so I removed them. The indoor fan continues to work in the usual way, drawing warm air through the evaporator where it is cooled and discharged through the louvers. Scout "Thomas Stewart" wrote: You leave a lot of questions. |
#24
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for those 95+ deg days
"DS King" wrote How do you get the evap & condensing temps? Very few AC units have that kind of instrumentation. Doug, the original unit is a $90 window shaker from Walmart. I installed the pressure access ports after I removed the condensing coil. I had to braze the refrigerant line into my tube-in-tube, and I needed a way to purge with nitrogen while brazing, and then attach vacuum pump, and finally, charge the unit. So I had refrigeration gauges on the system during testing. I converted the pressures to saturated temps using the R-22 pressure temperature relationship charts. I also installed temperature sensing wells at various points in the system, and inserted thermocouples in them to get feedback. The superheat and subcooling values are calculated. I actually measured the gpm by opening the loop and measuring the volume against a stopwatch. The delta T on the water supported the actual gpm of the closed loop. After testing I removed all but an ammeter and a discharge air thermometer. Also curious: how many feet of copper tubing in your secondary heat exchanger? about 22' I shaped it as a triangle for storage purposes, 18" per side, about 5 rows deep. The delta T I referred to is in/out of exchangers. The delta T for 'baywater' vs cooling water is about 10 degrees. Scout |
#25
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for those 95+ deg days
Also, being sealed up you don't have to listen to the assholes running their gensets.
"Scout" wrote in message ... Final product readings at full load conditions: GPM (of closed loop): 1.3 delta T (closed loop): 8 Fahr deg Total rejected heat: 5,198 btu/h Saturated evap temp: 45 deg Fahr Superheat of suction gas: 12 deg Saturated condensing temp: 105 deg Fahr Liquid Subcooling: 10 deg delta T (air) 19 Fahr deg moisture removal: enough that I should probably take your advice and dump overboard ability to dodge Jersey mosquitos and get a good night's sleep: priceless Scout |
#26
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for those 95+ deg days
quid pro quo
makes up for all their motor noise during the day. Scout "Jeff Morris" jeffmo@NoSpam-sv-lokiDOTcom wrote in message ... Also, being sealed up you don't have to listen to the assholes running their gensets. |
#27
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for those 95+ deg days
Alien came with a Cruisair AC!!!
I had one. I traded it for something I could use while sailing. S/V Express 30 "Ringmaster" Trains are a winter sport |
#28
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for those 95+ deg days
Alien came with a Cruisair AC!!!
I had one. I traded it for something I could use while sailing. What do you have now? RB |
#29
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for those 95+ deg days
Scout,
The mist is slowly rising, maybe? Are you still using the Freon system with the Evap. and expansion valve? If so, Why the conversion? A Confused, Ole Thom |
#30
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for those 95+ deg days
Depends on where you go. In the SF area, you don't
need AC. In BVI, Belize, and a lot of other warm climes, the boats come with them. "Scout" wrote in message ... do they have air conditioning? "Jonathan Ganz" wrote If you really want to save money and sail, either go with friends or charter. |
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