Q: Marka la eego P₀ iyo Pₖ imtixaannada, sidee baan u xisaabiyaa waxtarka heerarka kala duwan ee culeyska?
A: Hufnaanta η=P_out / (P_out + P₀ + ² × Pₖ) × 100%, halkaasoo=qodobka rarka.
Tusaale: 10 MVA Transformer, P₀=12 kW, Pₖ=85 kW:
|
raran |
|
Wax soo saarka (kW) |
P₀ (kW) |
²×Pₖ (kW) |
η (%) |
|
25% |
0.25 |
2,500 |
12 |
5.3 |
99.31 |
|
50% |
0.50 |
5,000 |
12 |
21.3 |
99.34 |
|
75% |
0.75 |
7,500 |
12 |
47.8 |
99.21 |
|
100% |
1.00 |
10,000 |
12 |
85.0 |
99.04 |
|
120% |
1.20 |
12,000 |
12 |
122.4 |
98.89 |
Waxtarka ugu badan=√(P₀ / Pₖ)=0.376 → ~37.6% culeyska
Heerarka waxtarka tamarta:
• IEC 60076-20: EEI fasalada A (ugu sarreeya) → D.
• Ecodesign EU 2019/1783: Tier 2 (2021), Tier 3 (2025-27).
• DOE 10 CFR Qaybta 431: xeer cusub oo dhaqan galaya Juun 2026.
• GB 20052-2020 (Shiinaha): Fasalka 1 (ugu sarreeya) → 3.
IS 1180 (Hindiya): Qiimaynta Xiddiga BEE 1-5.
Habka TCO: TCO=Qiimaha + A × P₀ + B × Pₖ
A ≈ $3,000–8,000/kW (maya - rarida qiimaha weyn).
B ≈ $500–2,000/kW