IRAC DSM IR 2
15-09-23
												SPLIT OF AIR SOURCE HEAT PUMP USAGE BETWEEN FIRST AND SECOND BLOCKS
		COMPARISON OF FUEL COSTS FOR AN ANNUAL SPACE HEATING REQUIREMENT OF 100,000,000 Btu							10 year	Estimated monthly electricity usage for 1,800 square feet home
									average	Air source				Heat	Heat
		Air source			Roundwood				Heating	heat	Lights &	Water		pump	pump
		heat	Furnace		(mix of	Wood			Degree Days	pump	appliances	heating	Total	1st block	2nd block
		pump	oil	Propane	hardwood)	pellets		Month	below 18 C	( kWh )	( kWh )	( kWh )	( kWh )	( kWh )	( kWh )
Annual space heating requirement	Btu x 10^6	100	100	100	100	100		Jan	772	2,072	450	450	2,972	1,100	972
								Feb	699	1,875	450	450	2,775	1,100	775
Conversion efficiency		2.50	0.90	0.90	0.65	0.75		Mar	636	1,707	450	450	2,607	1,100	607
								Apr	424	1,137	450	450	2,037	1,100	37
Required energy content in fuel	Btu x 10^6	40	111	111	154	133		May	270	726	450	450	1,626	726	-
								Jun	112	301	450	450	1,201	301	-
Fuel heat contents		3,412	36,200	23,503	25,000,000	17,637		Jul	19	50	450	450	950	50	-
		Btu / kWh	Btu / litre	Btu / litre	Btu / cord	Btu / kg		Aug	25	67	450	450	967	67	-
								Sep	106	285	450	450	1,185	285	-
Required quantities of fuel		11,723	3,069	4,727	6.2	7,560		Oct	272	731	450	450	1,631	731	-
		kWh	litres	litres	cords	kg		Nov	418	1,122	450	450	2,022	1,100	22
								Dec	615	1,651	450	450	2,551	1,100	551
Current fuel prices  ( as of Sep 23, 2015 )		0.1316	0.749	0.632	225.00	0.275
		$ / kWh	$ / litre	$ / litre	$ / cord	$ / kg			4,367	11,723	5,400	5,400	22,523	8,760	2,964
Annual fuel cost  ( before taxes )	$	1,543	2,299	2,988	1,385	2,077