Date: Sun, 22 May 2005 10:55:29 -0600
Reply-To: jimt <camper@TACTICAL-BUS.INFO>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: jimt <camper@TACTICAL-BUS.INFO>
Subject: Re: The propane filling question tested...
In-Reply-To: <6.0.3.0.0.20050521220223.048dae58@buncombe.main.nc.us>
Content-type: text/plain; charset="ISO-8859-1"
As noted on the tests opening the overflow port on the small tank made no
difference to flow rate.
Propane weighs 4.2 pounds to the gallon and about 21,500 btu per pound.
http://tactical-bus.info/propane/
jimt
On 5/21/05 8:23 PM, "Edward Maglott" <emaglott@BUNCOMBE.MAIN.NC.US> wrote:
> Nice report Jim.
> I am wondering if you could get more liquid into the Westy tank by opening
> the 80% valve. Seems like the escaping gas would make more room for liquid
> propane to enter, but it would also cause the liquid Propane already in the
> tank to start vaporizing.
>
> I was leaning toward the extend-a-stay, but it connects to the vapor only
> side of the Westy tank. I would really like to be able to pass liquid
> Propane from the Westy tank to the 1# bottle. And vice-verse.
>
> What is the approximate pounds per gallon on propane?
>
> Edward
>
> At 06:04 PM 5/21/2005, you wrote:
>> I purchased a hand POL to hand POL with 350psi rated hose.
>>
>> Project was to fill my 5 pounder from my 30 pounder.
>> ///first phase of testing///
>> Both tanks set outside in shaded area of about 76 degrees.
>>
>> Tested at same temp
>>
>> Connected hose
>> Opened 5 pound valve
>> Opened 30 pound valve
>> For about 1 minute I could detect flow.
>> Opened overfill port on 5 pounder.
>> With hand on side of tank I could feel an approximate level but no further
>> flow to the tank was detected.
>>
>> Closed valves and purged hose and disconnected and weighed the 5 pounder
>> It had gained 2 pounds. Less than a half fill.
>> ////second phase of testing////
>> Set up for test two
>> Took several cooled 1 pounders and my adapter and bleed most of the propane
>> out of the 5 pound into the disposables. And weighed tank to confirm the
>> TARE weight plus .5 pound
>>
>> Test two
>> Cooled 5 pound thoroughly in fridge and then set in some ice water.
>> Reconnected everything and began fill again. Fill sounds were much louder
>> and ran a bit over one minute. Disconnected and weighed. Weighed in at 15
>> pounds or TARE plus 4.5 pounds for a full tank.
>>
>> /////
>> The results of this as they would pertain to the westy tank are.
>>
>> You could use such a hose to connect a BBQ style tank to your westy tank and
>> then open both valves on vapor-upright and not tipped for liquid. This
>> would send pressurized vapor into the westy tank which could then go through
>> the regulator into your van's gas system. This is the same principal as the
>> extend-a-stay used for other RV. The tank doesnąt get used to fill the RV
>> system only supplement it.
>>
>> It would not be feasible to use it as a filler as I estimate only about 2
>> lbs are going to get into the system. However 2 lbs can be a day or day and
>> a half.
>>
>> jimt
>
>
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