How to calculate the size of the pressure cooker?

Pressure cookers are generally divided into four types according to specifications: 20, 22, 24 and 26 cm, all of which refer to the radius of the pot mouth. You can buy a trumpet with a small population; With a large population, it is natural to buy a large size.

Stainless steel composite bottom aluminum alloy pressure cooker is as suitable for induction cooker as stainless steel pressure cooker, and has the advantages of ordinary aluminum alloy pressure cooker. Avoid fire when using with open flame, prevent the bottom from cooling rapidly, and prevent the stainless steel composite bottom from deforming and falling off.

The advantages of ordinary aluminum alloy pressure cooker are light weight, fast heat transfer, low price, aluminum oxide layer on the surface to prevent corrosion (avoid damage) and rapid cooling with cold water. The service life is calculated as per day 1 hour, and its service life is 8 years, which is not suitable for induction cookers.

Working principle:

The principle of pressure cooker is simple, because the boiling point of water is affected by air pressure. The higher the air pressure, the higher the boiling point. On the alpine plateau, the air pressure is less than 1 standard atmospheric pressure, and the boiling point of water is lower than 100℃, so water can only boil below 100℃, and eggs are not cooked in ordinary pots. When the air pressure is greater than 1 atmospheric pressure and the temperature is higher than 100℃, water will boil.

The pressure cooker commonly used by people is designed by using this principle. The water in the pressure cooker is closed tightly, so the water vapor generated by water evaporation can't diffuse into the air, and only stays in the pressure cooker, which makes the pressure in the pressure cooker higher than 1 atmospheric pressure, and also makes the water boil when it is higher than 100℃.

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