EcoRenovator - View Single Post - Propane (R-290) for heat pumps?

Xringer · 01-30-12, 10:50 AM

In http://www.propanecouncil.org/upload...rol%20Vol1.pdf
it says:

"Methanol is traditionally over-used – if one pint is good, more must be even better. This over-dosing is
sometimes compounded by the fact the over-dosing may be replicated at multiple points along the
distribution chain, even when the propane is sufficiently dry. One marketer explained that when filling a
bobtail truck from a bulk tank, his procedure called fo r first filling the connecting hose with methanol.
This procedure was performed with no measurements being made as to the dryness of the propane – more
is better. However, a drop in temperature can result in most of the methanol phase separating to the
bottom of the tank. Although the methanol does vaporize with the propane and water, it does have a lower
boiling point than water. Therefore, methanol will continue to concentrate in tanks that cannot be
completely emptied."

01-30-12, 10:50 AM	#151
Xringer Lex Parsimoniae Join Date: Feb 2009 Location: Woburn, MA Posts: 4,918 Thanks: 114 Thanked 250 Times in 230 Posts	Methanol looks easy to flush, using upsidedown trick In http://www.propanecouncil.org/upload...rol%20Vol1.pdf it says: "Methanol is traditionally over-used – if one pint is good, more must be even better. This over-dosing is sometimes compounded by the fact the over-dosing may be replicated at multiple points along the distribution chain, even when the propane is sufficiently dry. One marketer explained that when filling a bobtail truck from a bulk tank, his procedure called fo r first filling the connecting hose with methanol. This procedure was performed with no measurements being made as to the dryness of the propane – more is better. However, a drop in temperature can result in most of the methanol phase separating to the bottom of the tank. Although the methanol does vaporize with the propane and water, it does have a lower boiling point than water. Therefore, methanol will continue to concentrate in tanks that cannot be completely emptied." __________________ My hobby is installing & trying to repair mini-splits EPA 608 Type 1 Technician Certification ~ 5 lbs or less..