Calculate BTU requirements for cabin cooling and heating on marine vessels
Input Parameters
Results
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Cabin Volume
cu ft
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BTU Required
BTU/hr
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Tonnage
tons
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Estimated Amps
A @120V
Reference
Marine HVAC sizing: wall U=0.7, window U=1.1 (BTU/hr/sqft/°F)
Solar gain on windows: ~40 BTU/hr/sqft (cooling)
COP ~3.0 for marine self-contained units
1 ton = 12,000 BTU/hr