System Sizing

Step 1	Determine Watt hours / day Energy Use				Step 2	Determine System Size
	SunDanzer Model				Sun hr.	3	4	5	6
Ambient	5.8 cu ft DCR165	8 cu ft DCR225	5.8 cu ft DCF165	8 cu ft DCR225	Energy Use	Watts PV	Watts PV	Watts PV	Watts PV	Battery Size
Temp ^oF/C	Refrigerator 38^oF / 3^oC		Freezer 10 oF / 12^oC							Amp Hrs @ 12/24 V
70 / 21	117	135	407	541	100	63	48	38	32	74 / 37
72 / 22	124	145	422	559	120	76	57	46	38	89 / 45
74 / 23	133	157	439	578	140	89	67	53	44	104 / 52
76 / 24	143	169	459	600	160	102	76	61	51	119 / 60
78 / 26	155	184	480	623	180	114	86	69	57	133 / 67
80 / 27	168	199	505	647	200	127	95	76	63	148 / 74
82 / 28	182	216	531	674	220	140	105	84	70	163 / 82
84 / 29	198	234	560	702	240	152	114	91	76	178 / 89
86 / 30	215	253	591	732	260	165	124	99	83	193 / 97
88 / 31	233	274	625	764	280	178	133	107	89	207 / 104
90 / 32	253	296	661	797	300	190	143	114	95	222 / 111
92 / 33	274	320	699	833	350	222	167	133	111	259 / 130
94 / 34	296	344	739	869	400	254	190	152	127	296 / 148
96 / 36	320	370	782	908	450	286	214	171	143	333 / 167
98 / 37	345	398	828	948	500	317	238	190	159	370 / 185
100 / 38	371	426	875	990	550	349	262	210	175	407 / 205
102 / 39	399	456	925	1034	600	381	286	229	190	444 / 222
104 / 40	428	487	977	1080	650	413	310	248	206	481 / 240
106 / 41	458	520	1032	1127	700	444	333	267	222	519 / 260
108 / 42	490	554	1089	1176	750	476	357	286	238	556 / 278
110 / 43	523	589	1148	1227	800	508	381	305	254	593 / 297
Battery Sized for 4 days (50% depth of discharge.) The Design Ambient Temperature is the maximum average weekly temperature that the cabinet is expected to operate in. If during a warm week the daily high is 100F and the daily low is 80F, then then design ambient is 90F. Example: DCR165- 5.8 cu.ft. refrigerator at 84F = 198 Watt-hrs/day In a 5 sun-hr/day region, you need at least 76 Watts of PV (rated) and a 148 Amp-hr battery (12 V).					850	540	405	324	270	630 / 315
					900	571	429	343	286	667 / 334
					950	603	452	362	302	704 / 352
					1000	635	476	381	317	741 / 371
					1050	667	500	400	333	778 / 389
					1100	698	524	419	349	815 / 408
					1150	730	548	438	365	852 / 426
					1200	762	571	457	381	889 / 445

SunDanzer System Sizing