When sizing a solar thermal system for domestic hot water, what is the commonly used rule of thumb for collector area per person?
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A
2–4 sq ft (0.2–0.4 m²) per person
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B
8–12 sq ft (0.7–1.1 m²) per person
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C
20–25 sq ft (1.9–2.3 m²) per person
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D
35–40 sq ft (3.3–3.7 m²) per person