How to make ice without a refrigerator? Hot topics and practical tips across the Internet in 10 days
In today's fast-paced life, refrigerators have become an essential household appliance. However, without a refrigerator, how to make ice cubes has become a topic of concern to many people. This article will combine the hot discussions on the Internet in the past 10 days to reveal the various methods of making ice without a refrigerator and provide practical tips.
1. Data statistics on hot topics across the Internet in the past 10 days
| Ranking | Topic keywords | Discussion popularity | Main platform |
|---|---|---|---|
| 1 | How to make ice without a refrigerator | 1,250,000 | Douyin, Xiaohongshu |
| 2 | Traditional cooling techniques | 980,000 | Weibo, Zhihu |
| 3 | Summer Drink Preservation | 850,000 | Station B, Kuaishou |
| 4 | Environmentally friendly refrigeration solutions | 720,000 | WeChat public account |
| 5 | Emergency Cooling Tips | 650,000 | Today's headlines |
2. 5 practical ways to make ice without a refrigerator
1. Potassium nitrate refrigeration method
This is a commonly used refrigeration technology in ancient times. Dissolving potassium nitrate in water will absorb a large amount of heat, which can lower the water temperature to below 0°C. Specific operation: Add potassium nitrate and water to the container, the ratio is 1:3, then put the sealed container filled with water into it, and it will freeze in about 30 minutes.
2. Evaporative cooling method
Utilize the principle of water evaporation and heat absorption. Wrap a container of water in a wet towel and place it in a ventilated place. As the water evaporates, the temperature of the water in the container gradually decreases, eventually forming ice cubes. This method is suitable for areas with dry climates.
3. Salt and ice mixing method
Mix ice cubes and table salt in a ratio of 3:1 to lower the temperature to -21°C. Bury a sealed container filled with water into the salt-ice mixture, and you'll have ice cubes in about 2 hours. This is a method commonly used by camping enthusiasts.
4. Natural freezing at night
In winter or cold areas, place the water outdoors at night and use the natural low temperature to freeze. It is better to choose a metal container because metal conducts heat well. Pay attention to prevent dust contamination.
5. Underground storage method
The temperature 1.5 meters underground is stable at 10-15°C all year round. A small cellar can be dug and a container of water placed in it to slowly freeze using the temperature difference. This method is suitable for long-term storage.
3. Comparison of the efficiency of different methods
| method | Ice making time | Ice mass | Applicable scenarios |
|---|---|---|---|
| Potassium nitrate refrigeration method | 30 minutes | clear and transparent | laboratory, emergency |
| evaporative cooling method | 3-5 hours | There may be impurities | arid areas |
| salt ice mixing method | 2 hours | purer | outdoor activities |
| Natural freezing at night | all night | Greatly affected by the environment | cold season |
| underground storage method | more than 12 hours | Stable but slower | long term storage |
4. Tips to improve ice making efficiency
1. Use metal containers: Metal conducts heat better than plastic or glass and can speed up the heat exchange process.
2. Reduce the amount of water: A small amount of water is more likely to freeze quickly than a large amount of water.
3. Increased surface area: Flat containers freeze more easily than tall, narrow containers.
4. Pre-cooled water source: Uses cooler water to start the ice making process.
5. Isolate heat sources: Place the ice making device in a cool place away from direct sunlight.
5. Things to note
1. Food safety: Ensure ice making containers are clean and hygienic and avoid using toxic materials.
2. Chemical safety: When using chemicals such as potassium nitrate, avoid direct contact with the skin.
3. Ambient temperature: Some methods are less effective in high temperature environments.
4. Energy consumption: Although no refrigerator is used, some methods still require other energy inputs.
5. Storage method: Prepared ice cubes should be used as soon as possible or stored properly to prevent melting.
With the above methods and techniques, you can make the ice cubes you need even without a refrigerator. These methods of combining traditional wisdom with modern science not only solve practical problems, but also allow us to re-understand the physical principles in life.
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