燃料热值能量

Fuel Calorific Value Energy Calculator

Compute the heat released by a fuel from its mass and lower heating value, and compare fuels by their energy content.

📐 计算公式
燃料燃烧放热量(本页代码口径):Q=质量 m×低位热值 h(h 单位 kJ/kg,Q 单位 kJ);联动量:兆焦=Q÷1000(MJ)、千瓦时=Q÷3600(kWh)、热值复算=Q÷m(kJ/kg)、折标准煤=Q÷29307(kg,按 29307 kJ/kg)。校验:质量与低位热值均须 >0,否则提示「请输入有效参数」并中止。判据:无固定分级,放热量与质量、热值均线性相关。

Q = m × H。

Formula & Standard References

Item Formula / Rule Source / Standard
Heat quantity formula Heat quantity equals mass times the lower heating value, expressed in megajoules. ISO 1928:2009, determination of calorific value of solid mineral fuels
Gross and net calorific value The gross calorific value includes the latent heat of condensing water vapour, while the net value excludes it. ISO 1928:2009, calorific value determination
Standard coal conversion Energy carriers are converted to standard coal equivalent by calorific value for unified accounting. GB/T 2589-2020, comprehensive energy consumption calculation
📌 计算说明
  • 1 kWh = 3.6 MJ。
  • 标煤热值约 29307 kJ/kg。

📚 深度解析:质量 × 低位热值

💡 常见使用场景

天然气热值折算
天然气低位热值约 9.6 kWh/m³、日用 20 m³:供热≈192 kWh(锅炉 90% 有效≈173 kWh)。折算标准煤:1 kgce≈8.14 kWh,约 21 kgce/日。提示:高位/低位热值差在水的汽化潜热。

❓ 常见问题(FAQ)

高位和低位热值区别?
高位含燃烧水蒸汽凝结潜热,低位不含;工程常用低位(LHV)更贴近实际可利用热。
为什么折算标准煤?
统一能耗口径做横向对比与统计,1 kgce=29307 kJ≈8.14 kWh。