Which is more suitable for drinking, electric boiling water or gas boiling water? Or is it not harmf

Don't boil for too long, the current tap water itself is poor, boiling water is the way the ancients killed bacteria in the water, but now it is not applicable, the residual substances in the water after boiling water are also harmful to the body, but it is much stronger than not boiling, it is recommended to install a household water purifier at home, directly filter tap water, at least 5 levels of filtration, there must also be a layer of RO membrane filtration, so that the water can be directly quoted, beneficial to human health.

Water is the source of life, and all the life activities of the human body are inseparable from water. However, many people's understanding of drinking water is limited to quenching their thirst. In fact, drinking water is also a science, and drinking water correctly is very important to maintain people's health. In daily life, the following types of water cannot be drunk:

Raw water. Raw water has a wide variety of bacteria, viruses, and zoonotic parasites that are harmful to humans. Drinking raw water can easily cause acute gastroenteritis, viral hepatitis, typhoid, dysentery and parasitic infections.

In particular, large and small rivers, reservoirs, and well water are polluted by factory waste liquid, domestic wastewater, and pesticide residues to varying degrees, and drinking raw water is more likely to cause diseases.

Aged water. Commonly known as "stagnant water", that is, water that has been stored for a long time. Drinking this kind of water often will significantly slow down cell metabolism and affect the growth and development of the body for minors; Middle-aged and elderly people will accelerate aging; The incidence of esophageal cancer and stomach cancer is increasing in many places, and according to medical research, it may be related to long-term drinking of aging water.

Relevant data show that the toxic substances in aged water also increase with the increase of water storage time.

A thousand boiling waters. A thousand boiling water is water that has been boiled on a stove overnight or for a long time, and water that has been boiled repeatedly in an electric water heater. This kind of water is boiled for too long, and the water has a high content of non-volatile substances, such as calcium, magnesium and other heavy metals and nitrite.

Drinking this water for a long time will interfere with people's gastrointestinal function, causing temporary diarrhea and bloating; Toxic nitrite can also cause hypoxia in the body, and in severe cases, coma, convulsions, and even death.

Steamer water. Steamer water is leftover pot water such as steamed steamed buns, especially steamer water that has been used repeatedly and repeatedly, and the nitrite concentration is very high. Drinking this water, or boiling porridge with this water, can cause nitrite poisoning; Scale often enters the human body with water, and can also cause diseases of the digestive, nervous, urinary and hematopoietic systems, and even cause premature aging.

Do not boil the water. The tap water that people drink is chlorinated and sterilized. 13 kinds of harmful substances can be separated from the chlorine-treated water, which has carcinogenic and teratogenic effects.

Experts point out that drinking unboiled water increases the likelihood of bladder cancer and rectal cancer21-38. When the water temperature reaches 100, the harmful substances will be greatly reduced with the evaporation of the vapor, if you continue to boil for 3 minutes, it is safe to drink.

Re-boil the water.

Some people are accustomed to boiling the remaining warm boiled water in the thermos before drinking, the purpose is to save water, gas and time. But this "savings" are not enough. Because the water is boiled and burned, the water evaporates again, and the nitrite will rise, and if you drink this water often, the nitrite will accumulate in the body and cause poisoning.

Personally, I think that boiling water has nothing to do with what kind of heating, as long as it can reach the boiling point of water at normal atmospheric pressure, the water boiled by electricity is the same as the water boiled by gas! It doesn't affect your health!

Save a little on gas.

The cost of boiling 5 liters of water with natural gas:

Because natural gas is very convenient now, we can also buy a kettle, so how much heat does it take to boil a kettle of water with a 5L kettle?

It is understood that the current ** of natural gas is generally 4 yuan cubic meters, so how much gas does it cost for us to boil this pot of 5L of water? Take a look at the formula below:

450 36,000 cubic meters of natural gas, gas cost: yuan.

The cost of boiling 5 liters of water with electricity:

The electricity cost of each place may be different, and commercial electricity and household electricity are not the same, so we will take the average value and calculate it per kilowatt-hour.

Then the amount of electricity required to boil 5 liters of water is: 450 3600 = degrees; Electricity required: RMB.

Speaking from the data, it is obvious that it is more cost-effective to use natural gas.

Precautions for boiling water:

1. Open the lid of the pot when the water boils to 80 90, and the lid should be opened. Because the organic pollutants in the water are volatile, most of the harmful substances can be volatilized by opening the lid of the kettle.

2. After boiling, wait for 3 minutes before turning off the heat, and tap water is basically chlorinated, which will form halogenated hydrocarbons, chloroform and other compounds that affect human health. After the water is boiled to 100, the content of halogenated hydrocarbons and chloroform begins to decrease, continue to boil the water for 3 minutes to reach the safe drinking water standard, and then turn off the heat. However, it is important to note that boiling water is not always better if boiled for as long as possible.

3. Water can not be boiled repeatedly to drink, the most ideal drinking water is fresh water, water left for too long is easy to be contaminated by microorganisms, so it is best to boil and drink. And try not to boil the water repeatedly, so that the pure water will evaporate, so that the concentration of other harmful substances in the water that are not easy to volatilize will increase, so try not to drink.

The calorific value of electricity is 864 kcal degree, the calorific value of natural gas is between 8000-10000 kcal m3, take 8500 kcal m3, take the electric heat efficiency is 90%, the gas heat efficiency is 30%, and the water temperature is 20.

Calories required to boil 1kg of boiling water:

1kg (100-20) 1 kcal kg 80 kcal Then, the cost of boiling 1kg of boiling water:

Electricity: 80 kcal 864 kcal Yuan Yuan Yuan Gas: 80 kcal 8500 kcal m3 m3 Yuan M3 Yuan The gas cost is 84% of the electricity cost, which is relatively economical, and it is more cost-effective if you use a device with higher thermal efficiency.

To be sure, the efficiency of gas consumption is too low, and the waste of resources is too serious.

I think it's a bit cheaper to use gas.

****。

The heat generated by 1 cubic meter of natural gas is about 8200 kcal, and the thermal efficiency is about 35%, so the available heat is about 2870 kcal.

The heat generated by 1 kilowatt-hour of electricity is about 850 kcal, and the thermal efficiency is about 85%. So the available calories are about 722 kcal.

Specifically, one cubic meter of natural gas is equal to about four kilowatt-hours of electricity, so when hot water, you need to look at the power of the gas stove and electric water heater, thermal efficiency, etc., and also need to look at the gap between gas price and electricity price.

On the whole, the gas ** in the northwest region is relatively low, and the gas is compared and calculated. Where gas is more expensive, electricity is cheaper above.

Safe and secure. With gas hot water, it is easy to forget, several times almost burned the kettle, once smelled a pungent smell of burning, it turned out to burn the plastic handle of the kettle, fortunately did not catch fire. The disadvantage is that the temperature control of the kettle is easy to break, basically about 2 years to break once, once the kettle lid was not closed, and when I remembered it, the kettle was almost out of water, and I was shocked to sweat.

Therefore, whether you use natural gas or an electric kettle to boil water at home, you must pay attention to safety. Especially for people who tend to forget.

Generally, natural gas boiling water is better than electric kettle, mainly because the temperature is high, the water is more sufficient, and the time is long, which can evaporate the chlorine poison in the tap water. The other is that it is more convenient to boil water with a kettle, which is worry-free.

1. Different levels of health.

Gas is healthier when it comes from the outside of the kettle to the water inside the kettle, while the electric kettle heats the water directly through the electric heater, but at the same time destroys the molecules in the middle of the water.

2. The heating method is different.

The working principle of the electric kettle is that the water vapor generated when the water boils deforms the bimetal sheet of the steam temperature sensing element, and this deformation pushes the power switch to depower through the lever principle. Its power-off is not self-reset, so the kettle will not automatically reheat after power-off.

3. The speed is different.

The gas boils water quickly, mainly because the heat exchanger is at work. If you look closely inside the gas water heater, you will find that after the cold water goes in, the path is a long, thin tube, which is the heat exchanger. Under the action of the fire, the huge heating area makes the water heat up quickly.

After it gets hot, it flows out of the water with a normal stream of water after it has been discharged.

Natural gas is certainly cheaper than electricity.

For example, if 1kg of water rises from 0 degrees Celsius to 100 degrees Celsius, then the heat absorption is q=cm t=

The amount of electricity corresponding to 420kj is 420 3600 = kWh, which is converted into yuan.

420kj corresponds to 420 36000 natural gas, which is converted into yuan.

Which is more economical to boil water with electricity or natural gas?

Which is more cost-effective to boil water and electricity, it is cost-effective to boil the same water and electricity, or it is cost-effective to use natural gas, precautions for boiling water, how to boil water more cost-effective, money-saving methods for boiling water, saving dozens of dollars a year, life tips, life tips.

There is no difference. It can only be said that the heat is concentrated when boiling water with electricity, and the time taken is shorter. When boiling water in a fire, the heat is more dispersed and takes a long time. So as long as the boiling point can be reached, no matter what boiling water is the same, there is no difference.

From the point of view of water, the water is in a pot made of metal, and the heat is transferred from the outside through the kettle, and then the water is heated, and the water does not know what makes the water hot, whether it is burning wood, burning coal, burning gas, or electric stove wire, the heat transmitted is the same.

If you are responsible for your own health, it is recommended that you boil the water with natural gas before drinking, because the water boiled with an open flame is safer and more hygienic than the water boiled with electricity, because the "water boiling point" temperature that can be achieved by boiling water with electricity is relatively low, and most of the electric heating kettles now have an "over-temperature" protection device, once the heater reaches the limit temperature, it will stop working, but nutritionists believe that this "boiling-stop" water is not conducive to human health. For the sake of your own health, it is better to boil the water over an open flame for a period of time (5 minutes after boiling) before drinking.

When using natural gas, 80 kcal is 80kcal, the main component of natural gas is methane, the density is 55% of air, volatile, and the calorific value of one cubic meter is 8500 kcal.

It is a liter of water that costs 80 8500 cubic meters of natural gas, that is, cubic meters, one cubic meter is about ** in yuan, and a liter of natural gas boiling water is also in yuan.

When using electricity, the calorific value of each kilowatt-hour of electricity is 860 kcal, that is, a liter of water needs 80 860 kilowatt-hours of electricity, that is, one kilowatt-hour of electricity is yuan, and one liter of electricity is boiled in yuan.

Therefore, it has been calculated that the use of natural gas when boiling water is more energy-efficient and cost-effective.

Which is cheaper to boil water with natural gas or electricity? Today I know it.

Which is more economical to boil water with electricity or natural gas?