能源审计计算器
使用能源审计计算器全面评估建筑或设施的能源使用效率。分析供暖、制冷、照明和设备用能，识别能源浪费环节，获取节能改造建议和预期节省金额。
Energy Use Intensity
5.4 kWh/sq ft
Energy Use Intensity vs Electricity Rate
公式
How to Perform a Basic Energy Audit
An energy audit compares your actual energy use against benchmarks to identify saving opportunities.
Key Metric: Energy Use Intensity (EUI)
EUI = Annual Energy / Square Footage
Residential Benchmarks
Most homes can reduce energy use by 15-30% through basic efficiency improvements.
计算示例
A 2,000 sq ft home using 10,800 kWh electricity and 500 therms gas annually at $0.15/kWh.
- 01Energy intensity: 10,800 / 2,000 = 5.4 kWh/sq ft
- 02Electricity cost: 10,800 * $0.15 = $1,620
- 03Gas cost: 500 * $1.50 = $750
- 04Total cost: $1,620 + $750 = $2,370
- 05Potential 20% savings: $2,370 * 0.20 = $474/year
常见问题
What is an energy audit?
An energy audit systematically evaluates how a building uses energy and identifies opportunities to reduce consumption. Professional audits may include blower door tests and thermal imaging.
What are the most common energy waste sources?
Air leaks around windows and doors, poor insulation, inefficient HVAC systems, outdated lighting, and phantom loads from electronics are the top energy wasters in homes.
How much can an energy audit save?
Implementing recommendations from a professional energy audit typically reduces energy bills by 15-30%, saving $400-1,000 per year for an average home.