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Solar Heat Gain Calculator

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Input Parameters

Unit System

CSV Data Import/Export

Results

Solar Heat Gain

12,000
Solar Gain BTU/hr
120
Solar Gain per Area BTU/hr/sq ft

Parameters

Window Area100 sq ft
SHGC0.6
Shading Coeff0.8
Orientationsouth

Solar Heat Gain Analysis

Calculation Steps

1

Calculate Effective SHGC

Formula:
SHGCeffective=SHGC×SCSHGC_{effective} = SHGC \times SC
Calculation:
SHGCeffective=0.6×0.8SHGC_{effective} = 0.6 \times 0.8
Result:
0.480 0.480 \text{ }
2

Orientation Factor

Formula:
Forientation=1.0F_{orientation} = 1.0
Calculation:
Forientation=1.0(south)F_{orientation} = 1.0 (south)
Result:
1.0 1.0 \text{ }
3

Calculate Solar Heat Gain

Formula:
Qsolar=A×I×SHGCeffective×ForientationQ_{solar} = A \times I \times SHGC_{effective} \times F_{orientation}
Calculation:
Qsolar=100×250×0.480×1.0Q_{solar} = 100 \times 250 \times 0.480 \times 1.0
Result:
12000.00 BTU/hr12000.00 \text{ BTU/hr}
4

Calculate Solar Gain per Area

Formula:
Qperarea=QsolarAQ_{per area} = \frac{Q_{solar}}{A}
Calculation:
Qperarea=12000.00100Q_{per area} = \frac{12000.00}{100}
Result:
120.00 BTU/hr/sq ft120.00 \text{ BTU/hr/sq ft}