Thermoses are great for those who pack their lunch for work. They are designed to maintain the temperature of the liquid inside, whether it’s hot or cold. Want to keep your soup or morning coffee hot during your morning commute? How about a cold cup of orange juice you want to enjoy once you’ve settled into the office? A thermos is the perfect solution, but have you ever wondered how it’s able to maintain temperatures? Here’s how a thermos container works!
Heat Transfer
Before we get into how a thermos container
works, let’s begin with how heat transfers. Heat is the random motion of matter
particles, or internal energy. The more particles move, the hotter an object
is. Heat transfers in three ways: conduction, convection, and radiation.
●
Conduction: The flow of heat that follows
physical contact. If you touch a hot stove, your finger will get burned as a
result. When we touch an object to test its temperature, we are feeling the
temperature of our skin rather than the temperature of the object.
●
Convection: Heat transfer caused by the motion
of a liquid or gas. When boiling water in a pot, the water at the bottom heats
up faster. Hotter fluids have lower density, so they rise up. The hot water at
the bottom will rise to the top and the colder water falls to the bottom. This
repeats, evenly distributing the heat to all of the water.
●
Radiation: Heat transferred by electromagnetic
waves. When the waves are absorbed by an object, the object heats up. Radiation
doesn’t require a medium for heat transfer to occur and is the method the sun
uses to heat the planet.
How Does This Relate to the Thermos Container?
A thermos works by minimizing the amount of
heat transfer that gets inside due to radiation and conduction. Surprisingly,
convection isn’t a part of this because it keeps the temperature even. This
means that the liquid inside will be hotter at the top and colder at the
bottom. Thermos containers are technically known as a vacuum flask.
This is
because it’s made up of a bottle inside of a bottle which is separated by a
vacuum. This vacuum minimizes conduction because it eliminates direct heat
contact with the contents inside the thermos. A hot liquid will still radiate
hate, but thermoses are coated with a silver surface that helps prevent
electromagnetic waves from getting through.
Contact Skylight Creative Ideas
Today for Your Custom
Thermos!
Looking for a custom thermos with your brand and logo
printed onto it? Skylight Creative Ideas, Inc. can help! We have
been
a leader in the promotional products industry since
1977. Our goal is to provide top-notch customer service,
innovative ideas, and high quality
products to help our clients exceed their marketing objectives.
Located in Bel Air, MD, we have access to over 750,000
promotional products and can help
your business with anything from awards to corporate apparel.
For more information, contact us at (410)-879-8401 or visit our
website www.skylightcreativeideas.com to shop for your thermos
and see all of the other products we have to
offer!