热增益计算器 — 公式
## Cooling Load (Heat Gain)
**Total = Envelope Gain + People Gain + Appliance Gain**
Envelope gain uses a factor of 20 to 40 BTU per sq ft depending on climate and insulation. Each person adds about 600 BTU/hr. Appliances convert at 3.412 BTU per watt. One ton of cooling = 12,000 BTU/hr.
**Total = Envelope Gain + People Gain + Appliance Gain**
Envelope gain uses a factor of 20 to 40 BTU per sq ft depending on climate and insulation. Each person adds about 600 BTU/hr. Appliances convert at 3.412 BTU per watt. One ton of cooling = 12,000 BTU/hr.
计算示例
1,500 sq ft, 30 BTU/sqft factor, 4 people, 1000W appliances.
- Envelope = 1500 x 30 = 45,000 BTU/hr
- People = 4 x 600 = 2,400 BTU/hr
- Appliances = 1000 x 3.412 = 3,412 BTU/hr
- Total = 50,812 BTU/hr = 4.2 tons