Conversion Relationship of common energy consumption

There are many types of energy, and the amount of heat is also different. In order to facilitate mutual Comparison and Research on the total amount, China will put each kilogram containing 7000 calories (29306 kilo) standard Coal, also known as standard coal. In addition, China often converts all kinds of energy into tons of standard coal, for example, the energy of 1 ton of straw is equivalent to 0.5 tons of standard coal, 1CubeThe energy of Rice biogas is equivalent to 0.7 of standard coal.

Standard Coal, also known as coal equivalent, has a unified calorific value standard. China stipulates that the calorific value of standard coal per kilogram is 7000 kcal. Convert different varieties and different content of energy into standard coal with a calorific value of 7000 Kcal per kilogram.

Standard Coal coefficient for energy reduction = actual calorific value of a certain energy source (kilobytes/kg)/7000 (kilobytes/kg)

Before conversion of standard coal from various energy sources, the actual average calorific value of various energy sources is calculated, and then the standard coal is converted. The average calorific value is also called the average calorific value, which is the weighted average value of the measured calorific value of different types or varieties of energy. Calculation formula:

Average calorific value (kilobytes/kg) = [Σ (a certain energy measured low calorific value) x The amount of this energy]/total energy (tons)
Reference coefficient for conversion of various types of energy into standard coal
Standard Coal coefficient for average low calorific value of energy name
Raw Coal 20934 kilo/kg 0.7143 standard coal/kg
Washing Coal: 26377 kilojoules/kg: 0.9000 standard coal/kg
Other Coal Washing Methods: 8374 kilojoules/kg: 0.2850 standard coal/kg
Coke 28470 kilo/kg 0.9714 standard coal/kg
Crude Oil 41868 kilo/kg 1.4286 standard coal/kg
Fuel Oil 41868 kilo/kg 1.4286 standard coal/kg
Gasoline 43124 kilo/kg 1.4714 standard coal/kg
Kerosene 43124 kilo/kg 1.4714 standard coal/kg
42705 kilo/kg 1.4571 standard coal/kg
Liquefied petroleum gas 47472 kilo/kg 1.7143 standard coal/kg
Refinery dry gas 46055 kilo/kg 1.5714 standard coal/kg
35588 kilo/m3 of natural gas, 12.143 tons/cubic meters
16746 coke oven gas/5.714-6.143 tons/cubic meters
Other gas: 3.5701 tons/cubic meters
Heat 0.03412 tons/focal points
1.229 tons of electric power/thousands of hours
1. The heat calculation method is to find the heat entropy of each kilogram minus the heat entropy of feed water (or return water) in the entropy diagram (table) based on the temperature pressure of steam and hot water at the exit of the boiler, the number of steam or hot water produced by the current boiler (read by the flow meter) is calculated. If some enterprises do not have a flow statement with steam or hot water, if there is no entropy chart (table), it can be estimated using the following method:
(1) The water supply volume of the boiler reduced the loss of sewage and other losses during the reporting period, as the output of steam or hot water.
(2) In the case of closed-circuit supply of hot water, the heat entropy per kilogram is calculated by 20 kcal. For example, when the open-circuit supply is enabled, then, the entropy per kilogram is calculated based on 70 Kcal (the outlet temperature is considered to be 90 ℃, and the return temperature is 20 ℃ ).
(3) saturated steam, pressure 1-2.5 kg/square centimeter, temperature 127 ℃ or above of the heat of 620 kcal, pressure 3-7 kg/square centimeter, the temperature between 135 ℃ and 165 ℃ is 630 kcal. The pressure is 8 kg/square centimeter, and the temperature above 170 ℃ is calculated by 640 kcal for each kilogram of steam.
(4) overheated steam, pressure 150 kg/square centimeter, per kilogram of heat entropy: less than 200 deg C according to 650 kcal calculation, 220 deg C-260 deg C according to 680 kcal calculation, 280 deg C-320 deg C according to 700 thousand card, 350 deg C-500 deg C according to 700 thousand card calculation. Converts the data into a value of 4.1868.
2. Conversion of Heat Unit "kilobytes" and standard coal "tons"
The calculation units of "steam" and "Hot Water" in the energy conversion coefficient are "kilobytes", but in the "Basic information table" (in energy consumption) the "steam" calculation unit is "steam tons", and the "hot water" calculation unit in other energy consumption (discount standard coal) is "tons", so further conversion is required, only in this way can we meet the requirements for filling in the "Basic Information Form". The calculation is based on the national standard of 7000 kcal discount per ton and 1 kg standard coal:
3. There are two calculation methods for the calorific value of Electric Power: one is calculated based on the theoretical calorific value, and the other is calculated based on the coal consumption of thermal power generation. Each method has its own purpose. The theoretical calorific value is calculated based on the thermal power equivalent of 860 calories per power, that is, 0.1229 kg standard coal. Based on the coal consumption of thermal power generation, each year is different. To facilitate the comparison, the National Bureau of Statistics will use 0.404 kg standard coal for each electric power, which will serve as the standard coal coefficient for power conversion in the future.