Posted on 07/23/2015 10:04:02 AM PDT by thackney
Bye Bye Bunker Charlie...
Just wondering what the difference is in energy vs oil. We discovered if we ran our standby generator on propane, we’d loose about 500 watts (5500kw total) so we stayed with gasoline. Not sure, but if the ship’s engine is designed to run on LNG ...
These ships engines are designed to run on Nat Gas. It is not taking a fuel oil engine and converting it.
It is a more expensive engine, typically.
You just need to increase he volume of fuel getting to the engine to make up for the loss of energy. I converted ours to natural gas and as long as you get to the recommended RPMs you should get the same wattage.
L
That sounds like programming. The engine should increase fuel and air intake automatically when rpm dips from increased power usage.
I was talking propane. Sorry I didn’t make that clear. There’s a decided power drop in power output when using propane as the generator instruction book points out.
“Peuget Sound Energy “
Don’t they make cars, too?
The instruction book clearly states that a power drop of 500watts will occur if using propane. Sorry I didn’t make that clear.
Okay - so I guess LNG has more power than propane (which I forgot to mention).
5500kw is a large drop. That’s enough power to run most ships.
No, a 500watt drop from a 5500watt generator.
They should coat ships with this stuff.................
http://www.livescience.com/49515-water-repellent-material.html
Ok. I misunderstood.
500w drop is still not terrible unless you only have one aux. generator
12,000 to 31000 deaths a year linked to maritime pollution???
I call bs on this
I know it isn’t but it does create inefficiency in total power. Our total power usage at the house is around 50 amps if everything is running (except the on-demand water heater and pump) - the generator just supplies the fridge, some lights, TV, computers and the water pump (we live up a logging road in the mountains).
Sorry. Didn’t mean to give you bad information.
Propane is liquefied under reasonable pressure, 50~250 psi depending on temperature.
LNG requires great cooling to liquefy, -260°F.
Both are burned in the gas state; they have to be vaporized for use.
So comparisons can be a little misleading, unless you are only concerned with storage space.
One gallon diesel = 139,000 Btu
One gallon gasoline = 125,000 Btu
One gallon LPG (propane) = 91,000 Btu
One gallon LNG = 82,650 Btu
However LNG weighs less.
1 gallon LNG = 3.5 lbs
1 gallon LPG = 4.2 lbs
so you get more energy per pound with LNG
LNG = 21,700 BTU/lb
LPG = 23,600 BTU/lb
A better question, what companies are producing LNG and how can I invest.
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