We chose to develop a propane heating system (first introduced in 1967) for 6 main reasons:
1. Propane is non-toxic
Propane is not harmful to soil or water. Because propane does not endanger the environment, the placement of propane tanks either above or below ground is not regulated by the Environemtnal Protection Agency (EPA).(1)
NIOSH recommends that whole diesel engine exhaust be regarded as a potential occupational carcinogen. Follow OSHA and NSHA rules where diesel engine exhaust fumes may be generated.(4)
2. Direct firing without alternation or discoloration (2)
There is no contamination of fume problems with unburnt fuels.(2) If a propane leak should occur, the trailer cargo will remain safe and completely unharmed, with no thick and heavy odour, taste, or stains.
Furthermore, this direct, one-step clean-burning heat transfer is lead free, sulphur free and carbon monoxide free.
3. Propane has a narrow range of flammability (3)
"Propane has a narrow range of flammability when compared with other petroleum products and has the lowest flammability range of any fossil fuel. In order to ignite, the propane/air mix must contain from 2.2 percent to 9.6 percent propane vapor. If the mixture contains less than 2.2 percent gas, it is too lean to burn. If it contains more than 9.6 percent, it is too rich to burn."(3)
Furthermore, "Propane won't ignite when combined with air unless the source of ignition reaches at least 940 degrees Fahrenheit. In contrast, gasoline will ignite when the source of ignition reaches only 430 to 500 degrees Fahrenheit."(1)
4. If propane leaks, it dissipates (3)
This is true with both liquid and gas forms.
If liquid propane leaks, it doesn't puddle but instead vaporizes and dissipates into the air.
5. Propane has a lower freezing/pouring point than diesel.
The freezing points of propane and diesel are approximately -188oC (-306oF) and -44oC (-48oF). More importantly, diesel fuel's "pouring point" is closer to -30oC (-22oF depending on additives/quality). This limitation, depending on the weather, fuel quality, and battery, with the additional need to 'crank' the engine, may prevent your diesel heater from starting.(4),(5)
PHD load heaters run on propane and contain no moving parts to 'crank'. Our choice of fuel and design is dependable no matter what the conditions are.
6. Propane is safe and convenient
"Propane tanks are constructed from carbon steel under a code developed by the American Society of Mechanical Engineers. A propane tank is 20 times more puncture resistant than a typical gasoline, methanol or ethanol tank." (6)
Propane availability is growing due to it's demand. Currently, there are over 20,000 propane fueling stations in North America; you can find one conveniently through the following links.
- Locate a propane station anywhere in the U.S.A.
- A route mapper with propane stations listed
- Superior Propane near you (Canada)
- Most Flying J locations supply propane
In conclusion, by using propane gas instead of diesel or electricity, we found that our customers can cut emissions and costs while increasing reliability and safety.
(1) National Propane Gas Association (http://www.npga.org/i4a/pages/index.cfm?pageid=636)
(2) Giri Energy (http://www.girienergy.com/application.htm)
(3) Propane Education and Research Council (http://www.propanecouncil.org/newsroom/fact_sheetsDetail.cfv?id=3)
(4) Diesel Material Safety Data Sheet (MSDS)
(5) Propane Material Safety Data Sheet (MSDS)
(6) National Propane Gas Association (http://www.npga.org/i4a/pages/index.cfm?pageid=629)
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