Your most searched 7 questions about hand warmers have been answered | T3

2021-12-16 07:25:05 By : Mr. Calvin Lam

What kind of hand warmers are there? Are they safe? Are they really effective? We answer all these questions and more

Posted by Tom May on August 24, 21

Whether you start hiking or just stand and watch the kids do exercise, the cold can spread to your fingertips. However, regardless of the weather, the best hand warmers can keep them warm and warm. However, there are so many types of hand warmers on the market that are dazzling, so which one is your right choice?

In this article, we will answer the most frequently asked questions about hand warmers so that you can better understand the situation there. We will introduce different types of hand warmers, discuss how they work, and whether there are any potential dangers in using them. 

There are many different kinds of hand warmers on the market. The main types are chemical hand warmers, hand warmers that burn charcoal or lighter fuels, and battery-powered hand warmers.

There are two main types of chemical hand warmers. The first is an air-activated hand warmer, which emits heat when exposed to the air. 

The second is a supersaturated solution (also known as crystalline) hand warmer, which requires you to do more work. You immerse it in hot water until it absorbs heat. Then, when you want to warm your hands, you can click on the metal disc in the center, and the heat will be released.

As the name suggests, the lighter fuel hand warmer burns a special lighter fuel. The flame is enclosed, and the device is usually wrapped in fabric to protect your skin from burns. The charcoal hand warmer works in a similar way; the charcoal sticks are burned in a special protective cover.

Finally, battery-powered hand warmers generate heat through battery power and can usually be charged from a power source. Some may also provide other functions, such as use as a power bank and/or flashlight.

Air-activated hand warmers and charcoal hand warmers are usually only used once, which is not good for the environment, and if used too many times, the cost will be higher. 

Supersaturated solution hand warmers, lighter fuel hand warmers, and battery-powered hand warmers are often reusable, making them more cost-effective and environmentally friendly options. 

Air-activated hand warmers usually contain cellulose, iron filings, activated carbon, vermiculite and salt. When exposed to air, heat is generated due to the oxidation of iron filings. 

Oversaturated solution styles (such as Lifesystems' reusable hand warmers, shown above) work in different ways. It is made by adding sodium acetate to cold water, beyond the level of insolubility. 

When the hand warmer is heated, it will dissolve the excess sodium acetate into the water and crystallize. Then, when the metal disk is bent, it releases tiny metal particles, which causes a chemical reaction to release the stored thermal energy from the solution.

Other types of hand warmers are simpler; either burn lighter fuel or charcoal rods to generate heat, or generate heat through battery power. 

Everything is dangerous. In the United States alone, 75 people die every year from lawn mowers, 26 people die from furniture, and 6 children die from balloon suffocation. In this case, it is theoretically possible for people to be injured or even commit suicide through abuse of hand warmers. 

For example, if you use the wrong type of fuel, or spill liquid in a hazardous environment, filling a hand warmer with lighter liquid can be a clear hazard. When you put the supersaturated solution hand warmer in hot water, you may burn yourself. Or, you may accidentally burn yourself when you light a charcoal stick.

This does not make the hand warmer itself dangerous. If they are, the government will undoubtedly quickly ban them, or at least restrict their sales. The main danger lies in their abuse. 

Air-activated hand warmers are absolutely toxic. If ingested, the iron filings they contain may cause vomiting, diarrhea, stomach bleeding and ulcers. If ingested in large quantities, symptoms may also include tremors, seizures, heart problems, and kidney or liver failure. 

For this reason, it is important to keep chemical hand warmers out of the reach of pets, as pets may try to eat them. You may need to worry about more than animals. This article discusses four cases of elderly people who accidentally ingested the contents of disposable hand warmers. (Thank goodness, everyone is fully recovered.)

Chemical hand warmers usually have an expiration date, just for the manufacturer's protection. However, anecdotal evidence suggests that if stored properly, air-activated hand warmers can last months or even years after the actual date of use.

If a process absorbs energy (absorbing heat), it is called an endothermic process, and if it releases energy (exothermic), it is called an exothermic process. It is easy to see that chemical hand warmers release energy through an exothermic reaction. If they don't, they will be meaningless.

Tom May is a freelance writer and author of The Great Ted Speech: Creativity. He used to be the editor-in-chief of professional photography magazines, associate editor-in-chief of Creative Bloq, and associate editor-in-chief of net magazine. He has also worked for various mainstream publications, including Radio Times, NME, Heat, Company and Bella.

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