Propane
- Thread starter td4321
- Start date
Propane locker
I have a Hunter 34 1984 and I converted one of the stern lockers to a propane locker. I had to make a bulk head to separate the lockers and install a vent to overboard any vapors in case of a leak. Then installed all the safety things like the auto shutoff and the tank plumbing. Ran the gas supply hose thru a water tight gland. have had it in since 2001 and never had an issues.
I have a Hunter 34 1984 and I converted one of the stern lockers to a propane locker. I had to make a bulk head to separate the lockers and install a vent to overboard any vapors in case of a leak. Then installed all the safety things like the auto shutoff and the tank plumbing. Ran the gas supply hose thru a water tight gland. have had it in since 2001 and never had an issues.
Made my own locker from corecel foam that I then glassed and gelcoated. Its attached to the stern rail. Works well and cost next to nothing in comparison to the lockers on the market.
Tony,
Take a look at the thread at;
http://forums.sbo.sailboatowners.com/showthread.php?p=1084998&highlight=
Shows a lot of ideas.
Greg
Take a look at the thread at;
http://forums.sbo.sailboatowners.com/showthread.php?p=1084998&highlight=
Shows a lot of ideas.
Greg
I have a 1989 37.5 legend with cng. I went on google and typed in cng refill and found a station that refills tanks and has new ones. I like the safety of cng and the relative safety profile. Back then, cars were going to all be cng, so there was much investment in cng. If, however, you are out of the country, i think it is very difficult.
Ben
Ben
The marina next to mine keeps cng tanks prefilled. I bring my old, and take a new one. Haven harbour, rock hall, MD. It's about $65.00 per tank which is 2000 psi of gas.
Ben
Ben
The locker for propane needs a sealed lid and a vent low in the locker that leads outside the hull. As you know propane is heavier than air and will flow like water so it needs a vent to drain outside the hull and in the event the drain gets clogged a tight lid should prevent it from spilling over into the hull. Trident manufactures lockers in different sizes for 1 or 2 bottles but the average retail price is around $750. You could always set the tank on deck or hang it from the stern pedestal and build a box or cover to protect it from the elements. To be able to use the same stove you would need to see if the manufacturer or retailers stock a set of jets for the conversion. Be aware that your stove did not need and will not have thermocouple switches which are now standard in Propane stoves. (Should the flame go out on an open burner the thermocouple switch will sense a change in temperature and cut off the flow of propane. A well done installation will enhance the value of your boat. Not cheap but worth it.
Looks like there are several CNG station in the Maryland area. Have you considered building a manifold and refilling your own tanks.
We have been doing this for a few years. We have a couple of spare tanks and only refill once a year between two boats.
If you decide to convert, maybe one of these would work in your aft lazarette?
http://www.suremarineservice.com/propane-lockers.aspx
We have been doing this for a few years. We have a couple of spare tanks and only refill once a year between two boats.
If you decide to convert, maybe one of these would work in your aft lazarette?
http://www.suremarineservice.com/propane-lockers.aspx
Other than availability, I don't believe there are any advantages to propane. Am I incorrect?
Ben
Ben
CNG contains 1,030 BTU per cubic foot while propane has 2,490 BTU per cubic foot. The pressure at which propane is stored in a tank is around 100 to 200 psi depending on the temperature while the pressure of CNG in at tank usually hovers between 2,900 and 3,600 psi. The condition of the tanks is a primary concern with CNG. Propane is heavier than air and flows and collects like water and CNG is lighter than air and dissipates in it. In strong enough concentrations both are explosive if ignited. Venting Propane requires a conduit through which the gas may flow by gravity to the outside of the hull while all CNG needs is adequate ventilation. CNG could still be cheaper than Propane but the scarcity of tanks and tank filling stations have driven the prices to insane levels so price wise for portable tank fills, advantage Propane. So you could say that Propane has an advantage in price, safety, greater choice of appliances and greater availability with much convenience. The issue of safety has been quoted as the "Achilles Heel" of Propane but with todays safety components and installation guidelines a Marine Propane installation is as safe as any.
I didn't realize there was such a difference in heat generation. That's all great information. Would you happen to know how many PSI/hr it takes to cook with propane? I understand the for CNG about 100 psi per hour is consumed when cooking.
Me Too!!!
Recent purchase of an Oday 32 revealed a CNG Galley stove as original equipment. Just got off the phone with a very helpful fellow in Utah where I learned the cost and availability of CNG is totally out of the question for our application. I feel very comfortable with a pair of tanks covered from the elements but vented directly overboard on the stern rail for propane but have no info regarding converting. Does the galley range require reconfiguration to use propane or is it necessary. The cost of a tank of CNG and shipping was over $500.00. Better to hire a chef and have meals delivered. LOL!
Hoping for good news,
Darrell
Recent purchase of an Oday 32 revealed a CNG Galley stove as original equipment. Just got off the phone with a very helpful fellow in Utah where I learned the cost and availability of CNG is totally out of the question for our application. I feel very comfortable with a pair of tanks covered from the elements but vented directly overboard on the stern rail for propane but have no info regarding converting. Does the galley range require reconfiguration to use propane or is it necessary. The cost of a tank of CNG and shipping was over $500.00. Better to hire a chef and have meals delivered. LOL!
Hoping for good news,
Darrell
Darrell,
I do know that propane is not interchangable with cng. There has to be a solenoid, and different regulators. That is the extent of my knowledge. I have cng, and i really like it. It costs me 60 bucks for 3000 psi.
Ben
I do know that propane is not interchangable with cng. There has to be a solenoid, and different regulators. That is the extent of my knowledge. I have cng, and i really like it. It costs me 60 bucks for 3000 psi.
Ben
We are in Florida
Where do you get your cng? How long would that 3000 psi last with normal cooking and baking?
I have been watching this thread even though I do not use CNG. Safety aside..... I see everyone talking about how long X PSI will last.
I think the REAL question should be how many cubic feet does the bottle hold and how long does that last. No matter how much the pressure, it's cubic feet that counts.
Propane is a liquid under pressure. It turns to a gas when the pressure drops to close to normal so it's harder to figure how many "gaseous" cubic feet per liquid cubic foot.
Greg
CNG comes (typically) in 20 hour bottles. The name is appropriate. I have found that it takes:
25 psi to make a pot of coffee on a Colman stovetop coffee pot
150 to bake a pizza
75 to fry up a two person bacon and egg breakfast.
If you are going to refill your own tanks be sure to check the bottle for working pressure. It is stamped on the top sholder. some are 1800 psi, some are 3000 and some are 3600 psi. the 1800 psi CANNOT be use at 3000 or 3600 psi filling stations safely. and there are no 1800 psi stations in operation.
25 psi to make a pot of coffee on a Colman stovetop coffee pot
150 to bake a pizza
75 to fry up a two person bacon and egg breakfast.
If you are going to refill your own tanks be sure to check the bottle for working pressure. It is stamped on the top sholder. some are 1800 psi, some are 3000 and some are 3600 psi. the 1800 psi CANNOT be use at 3000 or 3600 psi filling stations safely. and there are no 1800 psi stations in operation.