Propane Factiods
				9 Nov 2010  RAJ


	

	US: 11" water = 0.3974 psi
	British: 37 mbar (= 15" water [14.86"] = 0.555 psi)
                 mbar x 0.4018 = inches water
                 37 mbar = 14.87" water
                 27.4 mbar = 11" water



			Propex   Propex	Carver	  Carver  Propex
			1800	 2000	P4 high  P4 low  2800

 gram/hr propane in	128	 142	175	  88	  225
 kW propane in			 2.1 	2.4	  1.4
   = gal/hr		0.0664	 0.0737	0.09099   0.04576 0.11675
   hr/2.5 gal tank	37.6	 33.9	27.4	  54.6	  21.4

 kW out			1.6	 1.9	2.2	  1.2	  2.8
 BTU out		5461	 6483	7260	  4095	  9556

 current consumpt (A)	1.2*	 1.4*	2.5 max   1.2 max 1.9*
      * continuous


	misc:

	1 gram = 0.00220462 lbs
	1 BTU = 0.0002930722 kW-hr
	1 mbar = 0.4165" water
	1" water = 2.4897 mbar
	1 mbar = 0.015 psi
	1" water = 0.03602 psi
	1 psi = 27.7612" water
	Propane:
	1 gal = 91500 btu = 4.23 lbs
	1 gal = 36 cu ft
	lbs / 4.23 = gal
	2.5 gal = 11 lbs 
	boiling point: -44 degrees F  (butane: 31 deg F)

	gram x 0.000519957 = gal


 [corrections/additions to jones "at" colorado.edu]