Washington, DC Heat Pump Analysis

	A	B	C	D	E	F	G	H	I	J	K	L	M	P
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2	Assumptions:
3	Design Temperature, F	22
4	Design Heating Load, BTU/hr	40,000
5	"Break-Even" Temperature, F	60
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11				Annual heating load, BTU		HP COP, weighted average	Annual HP Heat Contribution, BTU	Annual Backup Heat Contribution, BTU	Annual HP electricity usage, kWh	Annual Total electricity usage, kWh	Percent HP	Percent Backup	Annual Degree-Days
12	Totals			83,579,168		3.1	82,797,017	782,151	7,730	7,959	97.1%	2.9%	4,286
13		187
14	Outdoor Temperature, F	Annual hours at this temperature	Heating load at this temperature, BTU/hr	Annual heating load, BTU	HP Capacity at this temperature, BTU/hr	HP COP at this temperature	Annual HP Heat Contribution, BTU	Annual Backup Heat Contribution, BTU	Annual HP electricity usage, kWh	Annual Total electricity usage, kWh	Percent HP	Percent Backup	Annual Degree-Days
15	5	1	57,895	57,895	32,000	2.3	32,000	25,895	4	12	35%	65%	3	5
16	6	1	56,842	56,842	32,750	2.3	32,750	24,092	4	11	37%	63%	2	6
17	7	1	55,789	55,789	33,500	2.3	33,500	22,289	4	11	39%	61%	2	7
18	8	2	54,737	109,474	34,250	2.4	68,500	40,974	8	20	41%	59%	5	8
19	9	3	53,684	161,053	35,000	2.4	105,000	56,053	13	29	44%	56%	7	9
20	10	3	52,632	157,897	35,750	2.4	107,251	50,645	13	28	47%	53%	7	10
21	11	3	51,579	154,738	36,500	2.5	109,501	45,237	13	26	50%	50%	7	11
22	12	5	50,526	252,632	37,250	2.5	186,250	66,382	22	41	53%	47%	11	12
23	13	7	49,474	346,321	38,000	2.5	266,004	80,317	31	54	57%	43%	15	13
24	14	8	48,421	387,373	38,750	2.6	310,003	77,369	35	58	61%	39%	17	14
25	15	10	47,368	473,686	39,500	2.6	395,002	78,685	45	68	66%	34%	21	15
26	16	13	46,316	602,116	40,250	2.6	523,260	78,857	58	81	72%	28%	27	16
27	17	16	45,263	724,220	41,000	2.7	656,008	68,211	72	92	78%	22%	32	17
28	18	22	44,211	972,637	41,813	2.7	919,880	52,757	100	116	87%	13%	43	18
29	19	27	43,158	1,165,289	42,625	2.7	1,150,900	14,388	124	129	97%	3%	52	19
30	20	31	42,105	1,305,283	43,438	2.7	1,305,283	0	140	140	100%	0%	58	20
31	21	34	41,053	1,395,800	44,250	2.8	1,395,800	0	148	148	100%	0%	62	21
32	22	35	40,000	1,400,000	45,063	2.8	1,400,000	0	147	147	100%	0%	63	22
33	23	32	38,947	1,246,337	45,875	2.8	1,246,337	0	130	130	100%	0%	56	23
34	24	33	37,895	1,250,538	46,688	2.8	1,250,538	0	129	129	100%	0%	56	24
35	25	32	36,842	1,178,948	47,500	2.9	1,178,948	0	121	121	100%	0%	53	25
36	26	34	35,789	1,216,868	48,313	2.9	1,216,868	0	123	123	100%	0%	55	26
37	27	41	34,737	1,424,228	49,125	2.9	1,424,228	0	143	143	100%	0%	65	27
38	28	52	33,684	1,751,584	49,938	2.9	1,751,584	0	175	175	100%	0%	80	28
39	29	60	32,632	1,957,943	50,750	3.0	1,957,943	0	194	194	100%	0%	90	29
40	30	70	31,579	2,210,560	51,563	3.0	2,210,560	0	217	217	100%	0%	102	30
41	31	82	30,526	2,503,170	52,375	3.0	2,503,170	0	243	243	100%	0%	116	31
42	32	89	29,474	2,623,234	53,188	3.0	2,623,234	0	253	253	100%	0%	122	32
43	33	92	28,421	2,614,786	54,000	3.1	2,614,786	0	250	250	100%	0%	123	33
44	34	98	27,368	2,682,126	54,813	3.1	2,682,126	0	254	254	100%	0%	127	34
45	35	112	26,316	2,947,471	55,625	3.1	2,947,471	0	277	277	100%	0%	140	35
46	36	123	25,263	3,107,442	56,438	3.1	3,107,442	0	290	290	100%	0%	149	36
47	37	131	24,211	3,171,613	57,250	3.2	3,171,613	0	294	294	100%	0%	153	37
48	38	145	23,158	3,358,036	58,063	3.2	3,358,036	0	308	308	100%	0%	163	38
49	39	157	22,105	3,470,628	58,875	3.2	3,470,628	0	316	316	100%	0%	170	39
50	40	155	21,053	3,263,206	59,688	3.2	3,263,206	0	295	295	100%	0%	161	40
51	41	154	20,000	3,080,000	60,500	3.3	3,080,000	0	276	276	100%	0%	154	41
52	42	166	18,947	3,145,379	61,313	3.3	3,145,379	0	280	280	100%	0%	159	42
53	43	164	17,895	2,934,798	62,125	3.3	2,934,798	0	259	259	100%	0%	150	43
54	44	165	16,842	2,778,956	62,938	3.3	2,778,956	0	244	244	100%	0%	144	44
55	45	170	15,789	2,684,338	63,750	3.4	2,684,338	0	234	234	100%	0%	142	45
56	46	169	14,737	2,490,599	64,563	3.4	2,490,599	0	215	215	100%	0%	134	46
57	47	161	13,684	2,203,174	65,375	3.4	2,203,174	0	189	189	100%	0%	121	47
58	48	164	12,632	2,071,712	66,188	3.4	2,071,712	0	176	176	100%	0%	116	48
59	49	164	11,579	1,899,026	67,000	3.5	1,899,026	0	160	160	100%	0%	109	49
60	50	155	10,526	1,631,603	67,813	3.5	1,631,603	0	137	137	100%	0%	97	50
61	51	155	9,474	1,468,555	68,625	3.5	1,468,555	0	122	122	100%	0%	90	51
62	52	153	8,421	1,288,503	69,438	3.5	1,288,503	0	106	106	100%	0%	83	52
63	53	141	7,368	1,038,977	70,250	3.6	1,038,977	0	85	85	100%	0%	71	53
64	54	137	6,316	865,388	71,063	3.6	865,388	0	71	71	100%	0%	63	54
65	55	141	5,263	742,188	71,875	3.6	742,188	0	60	60	100%	0%	59	55
66	56	139	4,211	585,300	72,688	3.6	585,300	0	47	47	100%	0%	52	56
67	57	143	3,158	451,718	73,500	3.7	451,718	0	36	36	100%	0%	48	57
68	58	146	2,105	307,463	74,313	3.7	307,463	0	24	24	100%	0%	43	58
69	59	146	1,053	153,731	75,125	3.7	153,731	0	12	12	100%	0%	37	59
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