Heat Loss کا حساب کیسے لگائیں
Heat Loss کیا ہے؟
Heat loss calculation determines heating requirements based on insulation, air leakage, and temperature difference. Critical for system sizing.
فارمولا
Conductive loss: Q = U × A × ΔT (sum all surfaces)
- Q
- 1 — 1
- U
- U value — Variable used in the calculation
- A
- A value — Variable used in the calculation
مرحلہ وار گائیڈ
- 1Conductive loss: Q = U × A × ΔT (sum all surfaces)
- 2Infiltration loss: Q = 1.08 × CFM × ΔT × air density
- 3Total loss drives heating system size
حل شدہ مثالیں
ان پٹ
House 200 m², U-avg 0.5, ΔT 20K, 500 CFM infiltration
نتیجہ
Total loss ~12 kW (heating system needed)
Detailed calc required
عام غلطیاں جن سے بچنا ہے
- ✕Neglecting infiltration (often 30-50% of total loss)
- ✕Using design temperature without seasonal variation
اکثر پوچھے جانے والے سوالات
Why is air sealing important?
Infiltration loss often exceeds conductive loss; air sealing improves efficiency more than adding insulation.
Does orientation affect heat loss?
Indirectly; south-facing gains solar heat. Window orientation matters more than walls.
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