Self-heating chafing dish can heat water, but generally speaking, cold water is enough. The principle of self-heating hot pot is a heating bag composed of coke powder, activated carbon and other ingredients, which can be heated and boiled when it meets water, so it has no effect on whether it is cold water or hot water. However, in order to avoid scalding, it is better to add cold water, because the heating bag of self-heating hot pot can soar to 96℃ in one minute, and if the water is heated, the temperature will rise faster, causing safety hazards and accidents. Therefore, from the perspective of safety, it is still necessary to use it carefully according to the instructions.
Second, what are the safety hazards of self-cooked hot pot?
1, releasing hydrogen can cause explosion.
The heating package belongs to a substance or mixture that emits flammable gas when it meets water. If the amount of hydrogen released after the heating package reaction is just at the combustion limit of hydrogen in the environment, that is, when the proportion of hydrogen in the air reaches 4%-75.6%, it may lead to the danger of explosion. Similar risks exist in some closed or semi-closed spaces, such as cars.
2. The discarded heating package has potential safety hazards.
In addition, the discarded heating package also has potential safety hazards. Because the reaction between the heating package and water does not need any other substances, as long as the heating package does not react completely, hydrogen will be generated when it meets water. If the heating package is put in the trash can, when it rains, the rainwater will enter the trash can and react to generate hydrogen. The trash can is a semi-closed environment. If you throw it into a fire source such as cigarette butts, there will be a danger of explosion or burning.
3. Blocking the air outlet may explode.
There is a vent hole on the lid of the self-heating hot pot. If the hole is blocked, it is easy to cause a small explosion and even burn people, so be sure to open the vent to relieve pressure.
4. Food safety issues
There are meat dishes such as sausage, marinated eggs and meatballs in the self-heating pot, as well as vegetarian dishes such as lotus root slices, fungus and bamboo shoots, accompanied by staple foods such as vermicelli noodles. The freshness and safety of these foods deserve attention. On the one hand, if there is too much meat, it is difficult to guarantee the quality of the product. But if all vegetables are vegetarian, its cost performance will be poor, and it will lose its bargaining power.
Three, the use of self-heating hot pot matters needing attention
1. Be sure to open the vent. There is a vent hole on the lid of the self-heating hot pot. Be sure to open it. If it is not opened or blocked, it will explode due to excessive pressure in the box.
2, the glass dining table should be padded with pot mats. Many people eat self-heating hot pot on the coffee table. Most coffee tables are made of glass, and pot mats should be placed on the glass dining table. Because once the highest temperature at the bottom of the self-heating hot pot can reach about 85℃, the glass will be broken because of uneven heating, which is also very dangerous.
3. When the heating bag is used up, wait for it to cool before throwing it away. Don't throw it about.