Classification of Boilers by Level
Classification of Boilers by Level
A-level Boiler:
1. Supercritical Boiler: P ≥ 22.1 MPa
2. Subcritical Boiler: 16.7 MPa ≤ P < 22.1 MPa
3. Ultra-high Pressure Boiler: 13.7 MPa ≤ P < 16.7 MPa
4. High-pressure Boiler: 9.8 MPa ≤ P < 13.7 MPa
5. Medium-high Pressure Boiler: 5.3 MPa ≤ P < 9.8 MPa
6. Medium-pressure Boiler: 3.8 MPa ≤ P < 5.3 MPa
B-level Boiler:
1. Steam Boiler: 0.8 MPa ≤ P < 3.8 MPa
2. Hot Water Boiler: P < 3.8 MPa, and t ≥ 120℃
C-level Boiler:
1. Steam Boiler: P ≤ 0.8 MPa, and V > 50 L
2. Hot Water Boiler: P < 3.8 MPa, and t < 120℃
D-level Boiler:
1. Steam Boiler: P ≤ 0.8 MPa, and 30 L ≤ V ≤ 50 L
2. Hot Water Boiler: Pressurized only with tap water, and t ≤ 95℃