The ancient Chinese method of making ice from hot water was to boil the hot water first, then let the water vapor drain away the air, then immediately seal the mouth of the urn with silk fabric, put it into a cold well, and wait for three days. Take it out and you'll get ice.

The history of the ancients using ice can be traced back to the Shang and Zhou dynasties. During that period, the ancients stored ice cubes in ice cellars in winter and supplied them for use in summer. According to the law of heat transfer, the thicker the object , the heat transfer effect will be lower, and deep cellars can hardly receive heat from the outside.

So the cellar is always at a constant temperature, and the ice cubes in the cellar can be well preserved until summer. The ancients who owned the ice cubes still had a lot of fun. The ancients used their wisdom to A simple refrigerator was designed. The early simple refrigerator was made of bronze, which showed the grandeur and luxury of the royal family. The simple refrigerator looked like a square box as a whole, with several places specially cast for placing ice cubes around the box.

Classification of ice

1. Industrial ice: Industrial ice is also called large ice cubes, ice bars, ice bricks, etc. Ice is frozen with pure tap water, with a temperature of minus 20 degree or so. Large ice cubes are widely used in seafood, catering, sanitation, and industry. Each ice cube is 50cm long, 25cm wide, 100cm high, and has a net weight of 200 pounds.

2. Edible ice: 20 kilograms per bag of edible ice (edible). Hygienic edible ice pellets are made from sterilized edible water frozen at minus 20 degrees. It can be used for eating, freezing, beverage preparation, and hotel dispensing. Make wine and drinks ice cold, make wine and drinks cold, refreshing, delicious, economical and delicious.

3. Transparent ice: Also known as crystal ice cubes and clear ice, transparent ice cubes can be used for scenery, art sculptures, decorations, celebration ice sculptures, wedding ice sculptures, reception ice sculptures, wine-infused ice sculptures, and business conference ice sculptures. , Chinese and English font ice sculptures, theme design ice sculptures, logo and trademark graphic ice sculptures, ice-breaking ice sculptures, festival ice sculptures, annual meeting ice sculptures, ice sculpture design, as small as wedding ice sculpture diamond rings, as large as split combination ice sculpture exhibitions, displays, ice sculpture landscapes Gardening and other uses.