How do you make clear ice cubes? How to make transparent ice cubes

Cool and freeze slowly, don't use tap water to see.

Try making clear ice.

Why is it that the ice cubes sold in stores are crystal clear, while the ice cubes made in the family box are white? Let's take a look at the reasons why the ice cubes are whitish and try to make clear ice cubes from the refrigerator at home!

What exactly is a white object?

If you look at the white parts of the ice cubes with a magnifying glass, you will see that they are small bubble particles. These are bubbles of air dissolved in water that freeze in ice when frozen.

Because the water removes impurities from the water during the freezing process, the air dissolved in the water also becomes bubbles and is excreted. However, when the freezing process is too fast, the bubbles do not have time to "run" away and are frozen in the ice, and the ice cubes appear to be white.

How do you make transparent ice cubes?

Broadly speaking, there are two reasons why ice cubes turn white:

a.The air dissolved in the water turns into bubbles;

b.The freezing process is too fast, and the bubbles don't have time to "run" away.

We can look at a and b to think about ways to make the ice transparent.

A: Bring the water to a boil and minimize the amount of air contained in the water. That is, boiling water is used.

B's countermeasure: The ice cubes sold in the store are slowly frozen for more than 24 hours, and this cannot be done with a home refrigerator. However, we can try wrapping cushioning styrofoam around the container to slow down the freezing rate.

What does the ice cube look like?

We made ice cubes with the following 3 methods: (1) boiling water + wrapping the container with cushioned styrofoam; (2) Boiling water was used but no cushioning foam was used; (3) The container was wrapped in cushioning styrofoam, but with unboiled water. The result is shown in the following figure:

Left) Ice cubes made using the second method (boiling water only);

In the picture) ice cubes made using the third method (using only cushioning foam);

Right) Ice cubes made using the first method (boiling water + buffer foam).

It seems that it would be too difficult to make completely transparent ice cubes in a home refrigerator, but we made them quite transparent.

In addition, I would like to reveal a secret: I heard that the transparent ice cubes used in restaurants are made by freezing the surrounding area and pouring out the remaining water before the ice cubes freeze completely and the middle turns white. (Right**).

Resources.

Ice cubes don't need to be too cold. Control the temperature of the freezer. Use a container that specializes in making ice cubes. Stainless steel products are preferred.

How do you make pure transparent ice cubes? The foreigner tested it with four kinds of water, and the results were unexpected!

The process of making clear ice cubes is as follows:

Material preparation: boiled water, ice cube mold, refrigerator.

1.Prepare a water source, preferably a boiled cool boil.

2.Prepare a ice plate or silicone ice cube mold.

3.Pour cooled boiled water into an ice cube mold.

4.Store in the refrigerator and take it out after 24 hours. Ice cubes can fall out of the mold by tapping it.

Drinks that can be put on ice:

1.Lemonade.

Lemonade is a popular summer drink that is sweet and sour and has a refreshing and refreshing taste. You can cut the lemon into slices, then add it to the water, and finally add the right amount of ice. Ice cubes will make lemonade cooler, thirst-quenching and refreshing.

2.Iced coffee.

On a hot summer day, a cup of iced coffee is a delightful choice. You can choose your favorite coffee beans to grind the coffee ground and brew it into a rich coffee liquid. Once the coffee liquid has cooled, add an appropriate amount of ice.

Ice cubes will make the coffee cooler while not making it too thin.

3.Fruit teas.

Fruit tea is a healthy and delicious drink that is perfect for cooling off in the summer. You can choose your favorite fruits, such as strawberries, blueberries, peaches, etc., and cut them into small pieces. Then put the fruit in the teapot, add some hot water, and when the aroma of the fruit is fully released, then add the appropriate amount of ice.

Ice cubes will make the fruit tea more refreshing and delicious, and at the same time, Fengtong will also maintain the fresh taste of the fruit.

4.Fruit juice. Fruit juice is one of the common beverages in summer, which can satisfy people's needs for water and vitamins.

You can choose fresh fruits such as oranges, apples, grapes, etc., and squeeze them into juice. Then pour the juice into a glass and add an appropriate amount of ice. Ice cubes will make the juice cooler and richer in taste.

5.Milk tea. Milk tea is a popular drink that not only satisfies people's love for milk tea, but also brings people the enjoyment of coolness and taste.

You can choose your favorite milk tea flavor, such as black tea, green tea, etc., and then add the right amount of ice cubes after cooling the milk tea. Ice cubes will make the milk tea cooler and smoother.

Clear ice cubes can be made by slow freezing, boiling, top-down freezing, and other methods.

1. Slow ice is too rough to freeze.

In the winter of cold regions, the outdoor ice cubes and icicles are also crystal clear, because they form very slowly, which prevents air and other impurities from being trapped inside. The laziest way is to use purified water or distilled water into the mold, adjust the temperature of the refrigerator to -1, and let the temperature decrease slowly and evenly, generally about 24 hours.

2. Boiling method.

Use purified or distilled water, not mineral water, and slowly boil more than 2 times (boil 1 time, let cool to room temperature, and boil again) to let the dissolved gases in the water as much as possible. Then pour the cooled boiling water into the mold, put it in the refrigerator and freeze it, and it will be good for a few hours.

3. Top-down freezing method.

Prepare the cooler. The cooler must be able to fit into the freezer compartment, and the cooler can isolate the ice cubes and allow them to freeze slowly from top to bottom. Place the ice box, reed dough mold or any ice container at the bottom of the cooler, the top is not sealed, pour water into the ice box or mold, pour water into the bottom of the cooler, and let the water surround the ice box or mold.

Place the cooler without a lid in the freezer and make sure the freezer temperature is not too low – -8--4 degrees Celsius.

Take out the cooler and carefully take out the large ice cube that freezes the ice box or mold, shovel off the ice around the ice box or mold, then remove the ice cube and leave the ice cube for a minute to melt the cloud-like layer on top.

Industrially made ice with transparent ice cubes

Salt water ice: It is widely used in fishery production and chemical dye production with a large amount of ice.

Barrel rapid ice maker: After the raw water is added to the ice bucket with the bottom cover closed, the refrigerant is sent by the ammonia pump to the ice bucket interlayer and the finger casing evaporator in the center of the ice bucket for evaporation and refrigeration; Ice is gradually formed along the walls of the barrel and the finger-shaped evaporator, and finally all of them are integrated; It is then de-iced with a hot refrigerant.

Tube Ice Machine: Tube Ice Machine is a batch ice-making device, and the ice made is hollow tubular ice. The main ice maker of the orange ice-making equipment is a vertical shell-and-tube evaporator, in which the refrigerant absorbs heat in the evaporator outside the tube, and the water is exothermic and freezes in the tube.

There is a water tank at the top and bottom of the ice maker, and the water is circulated by a water pump on the inside of the heat exchange tube, and the thickness of the ice in the tube is constantly increasing.

When the ice layer reaches a certain thickness, the ice maker is filled with refrigerant hot gas, so that the hollow tubular icicles fall away from the heat exchange tube, and the ice cutter at the bottom of the ice cutter cuts the icicles into a cylindrical hollow tube ice of a certain length, and the rotation speed of the ice cutter can obtain tube ice of different lengths.

1. First of all, we must figure out what the white ice cube is, if you use a magnifying glass to observe the white part of the ice cube, you will find that they are some fine bubble particles, which are bubbles that are frozen in the ice when the air dissolved in the water is frozen.

2. In general, there are two reasons why the ice cubes turn white: the air dissolved in the water turns into bubbles; The freezing process is too fast, and the bubbles do not have time to "run" away, so that they remain in them.

3. For the reason why the ice cubes turn white, we can take a variety of methods to solve the problem and make transparent ice cubes.

4. Do not use tap water to make ice cubes, and try to use boiling water (cool and white) to reduce the air contained in the water.

5. Buy purified water and use purified water as raw materials.

6. In the above two methods, we start from the raw materials, and then when we operate specifically, don't forget to seal the water after putting it into the ice tray container; At the same time, in order to slow down the freezing process, you can add a cushioned styrofoam wrapped container on the outer layer, and the ice cubes made in this way may not be particularly transparent, but it must be much better than the daily practice.

<> want to freeze transparent ice cubes, you can boil the water to reduce the oxygen contained in the water, pour the boiling water into a container, and wrap some cushioning foam around the perimeter to ease the freezing speed, and you can make transparent ice cubes by passing the key or after 24 hours.