According to the national regulations, what is the daily gas consumption of a family and the time of the average user?
1. First, determine the reading of the pointer before measuring.
2. Determine the reading of instrument pointer after measurement.
3. The meter reading after measurement minus the meter reading before measurement is the gas consumption.
4. The red pointer or red display number on the dial or display window is lower than the data of 1 m3, so it is unnecessary to participate in the calculation.
5. To know the daily consumption, it can be estimated by monthly average or daily difference.
Under normal circumstances, taking a family of three as an example, the energy consumption is as follows:
1 m3 natural gas can be used for a family of three to cook and bathe for 2 days on average; According to the average 30 days in a month, there are about 15 words in a month.
According to the conversion value of electricity and gas, the calorific value of 1 kwh electricity is about 860 kcal, and that of 1 m3 natural gas is about 9227 kcal. About 10 degree (no loss), equivalent to 1 m3 of natural gas.
Considering the loss, the natural gas efficiency is 40% and the electricity efficiency is 80%. Probably need the same combustion effect, using 10 kwh electricity is equivalent to using 2 cubic meters of natural gas. If the average household uses electricity 1000 kwh a year, it is equivalent to using 200 cubic meters of natural gas. Average monthly 16 words or so.
To sum up, the monthly gas consumption of a family of three is about 15- 17 cubic meters.
Extended data
Toxic hazards of natural gas:
When the content of natural gas in the air reaches a certain level, it will suffocate people. Natural gas is not as toxic as carbon monoxide, and it is essentially harmless to human body. But if the natural gas is at a high concentration, the oxygen in the air is not enough to sustain life, and people will still die. After all, natural gas cannot be used for human breathing. Natural gas as fuel will also cause casualties due to explosion.
Although natural gas is lighter than air and easier to disperse, it will cause a powerful explosion when it gathers in a closed environment such as houses or tents and reaches a certain proportion. The explosion may level the house and even damage the neighboring buildings. The lower limit of methane explosion in air is 5%, and the upper limit is 15%.
The explosion of compressed natural gas used in natural gas automobile engines is basically not available under spontaneous conditions due to the nature of gas volatilization. It is necessary to maintain the natural gas concentration between 5%- 15% by external force to trigger the explosion.
Common sense of safe use of natural gas
1. Although natural gas has the reputation of high efficiency, environmental protection and economy, it is still a combustible gas with the danger of explosion and combustion. Therefore, when using natural gas, gas leakage should be prevented to avoid fire.
2, common sense of safe use of natural gas Because natural gas needs a lot of oxygen in the combustion process, if it is not burned, it will produce toxic carbon monoxide gas, so keep indoor air circulation when using gas.
3. If the gas leaks in a closed space, it will mix with air, which is easy to cause gas explosion. Therefore, gas leakage should be avoided. Once the gas leak is found, the front valve should be closed in time, and the doors and windows should be opened to let the air circulate.
4, can't place other fire or flammable materials in the kitchen, should keep indoor gas facilities clean and tidy, it is forbidden to hang heavy objects on the gas pipeline.
5. In the common sense of safe use of natural gas, once you find gas smell near the kitchen or gas facilities, you should find a professional to check it in time.
References:
Baidu encyclopedia-natural gas