Thermos Flask Working Principle And Uses

Thermos are small appliances that are used to keep hot liquid hot and cold liquid cold for considerable duration of time. Thermos or vacuum flask are very useful appliance when you are traveling and want hot cup of coffee. A vacuum flask has very good capacity to hold extremely cold liquids like liquid nitrogen for a considerable length of time. The boiling point of liquid nitrogen is 77K compared to a room temperature of about 300K. You can hold liquid nitrogen for about a day without even a cover on the flask. There are many types of thermos flask available, if you are looking for a best thermos in India, this article will help you in this regard.

How Does Thermos Flask work

A thermos does not allow heat transfer by any of the three ways like radiation, conduction or convection that heat can travel. The silver coating on the inner surface of the vacuum flask prevents heat transfer by radiation, and the vacuum between its double wall prevents heat moving by convection. The thinness of the glass walls stops heat entering or leaving the flask by conduction. The case surrounding the thermos flask provides additional insulation.
thermos flask working principle
A thermos is very much like a super-insulated jug. Though there are many types of thermos available today, but all of them have an inner chamber and an outer plastic or metal case separated by two layers of glass with a vacuum in between. The glass is usually lined with a reflective metal layer. Unbreakable flasks do away with the glass. Instead, they have 2 layers of stainless steel with a vacuum and a reflecting layer in between them. There’s also a tight, screw-down stopper on the top.

The above features that we mentioned above prevent virtually all heat transfer by either conduction, convection, or radiation. The vacuum prevents conduction. The tight stopper prevents air from entering or leaving the flask, so convection isn’t possible either. What about radiation? When infrared radiation tries to leave the hot liquid, the reflective lining of the inner chamber reflects it straight back in again. There’s virtually no way heat can escape from a vacuum flask and a hot drink stored inside will stay steaming hot for many hours.

Heat Blocking at Vacuum Flask Top

The blocking of heat transfer into the liquid nitrogen from the top of a vacuum flask involves the insulating properties of gases and the ideal gas law. The gas above the liquid surface can be presumed to be dry nitrogen. When the ideal gas law is applied at approximately constant atmospheric pressure. So the cold nitrogen above the liquid occupies about one-fourth of the space it would occupy in the surrounding room- temperature air. The dry nitrogen at about four times normal density forms an effective insulating “stopper” on top of the liquid.

Choosing The Right Thermos

thermos flask in India
Thermos are comes in both stainless steel and plastic with stainless steel being more expensive compare to plastic. Even though stainless steel initially costs more, it will give you much better value for your money. Plastic mugs can break when dropped and they don’t keep your coffee or tea hot nearly as long as the stainless mugs. While choosing a vacuum flask, it is important that you buy according to your need. A vacuum or thermos flask is used to keep hot beverages hot and cold beverages cold for many hours. There are different types and functions of a thermos flask, depending on your need you should pick an appropriate thermos flask.

You can expect much better performance from a stainless steel thermos keeping your coffee or tea hot for more than two hours. If you are looking for the very best vacuum flask in India to keep your favorite beverage hot or cold longer, look for a mug with stainless steel double wall insulation. Thermos flask come in a variety of volume sizes. If you only for single person who drinks a small amount, consider buying a small flask of 500ml. On the other hand, if you want a large amount of coffee or tea to drink, consider a larger 1 litre or 2 litre thermos flask. The advantage of a travel mug that fits a cup holder is you don’t have to hold onto it. Just make sure the dimensions of the mug will fit your holder.
Cleaning a Vacuum Flask
Many people want to make their coffee on the go instead of just drinking it. There are thermos that you can buy that have infusers that you can use so you can put the tea bags directly into the mug along with the hot water. The vacuum insulation these mugs usually have will keep the tea hot for hours. This is perfect for green tea lovers since brewing the tea for a long time doesn’t seem to affect the flavor in a bad way at all. You could even make a mug full of cold brew iced tea in these mugs on the go. Many travel mugs aren’t dishwasher-safe, so look for wide openings and easy-to-disassemble lids, without lots of nooks and crannies, that will be easiest to wash thoroughly.

Thermos also comes in different color and design. You won’t have to settle on plain white or gray anymore. You can even choose your favorite sports team for a travel mug. Don’t sacrifice performance for style though. A sports team travel mug may look great but if it leaks and doesn’t keep the drinks hot or cold it’s not worth it and you’ll end up buying something else.

Benefits of Using Thermos Flask

So many people today are so busy and do not have much time for cooking and preparing breakfast. They are always on the go now more than ever and having a way to safely transport coffee, tea and other hot beverages makes the trip much more enjoyable. Thermos are popular with commuters, office workers, and many people who work in an industry where they are driving such as taxi driver, bus driver, pilot, and other types of jobs where having a regular cup of coffee or tea isn’t very safe. Here are some of the benefits of using thermos flask.

  • Vacuum flask are useful during winters, when many people have the urge to drink hot coffee or tea. Tea and Coffee tend to change taste when reheated. Therefore, in order to savour its original taste, you can use a thermos flask. These thermos flasks are insulated and are of great help.
  • Thermos are often used during traveling. Thermos flasks are made in such that the chances of spilling liquids are minimized.
  • Apart from keeping things hot, they are also used for keeping cold water, drinks and cold coffee cold for several hours.
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Right Juicer Machine in India – A Simple Guide

Are you considering to a purchase the best juice machine? Have you often thought of making fresh fruit juices?. So what juicer should you buy? If you are looking to use your top quality juicer more often then a good quality stainless steel juicer would be the best choice. A stainless steel juicer will last much longer, and it is the easiest to clean. In addition, a stainless steel juicer is aesthetically pleasing if it will be sitting on your counter top.

Types of Juicers in India

Another popular type of juicer is the masticating juicer. The main function of the masticating juicer is to use a roller to crush the fruit or vegetable that you put into the machine. It physically masticates the product into juice. It’s very similar to using a blender. However, unlike a blender, a masticating juicer does not require the addition of liquid water or juice to make a pulpy flavored juice.

The third type of juicer is called a twin geared or twin screw juicer. These juicers are commonly found in commercial applications such as coffee shops or restaurants. This kind of juicer is very similar to the masticating juicer that you can find for home applications. The difference is that the twin geared juicer uses two rollers instead of one. The main benefit of using a twin geared juicer is the fact that it has a lot of power and is capable to juice fruits very quickly. You can check out best juicers in India here.

Choosing The Right Juicer Machine

The downside to using a centrifugal juicer is that it mixes your fruit juices with air, which causes oxidation. You have the potential of losing a lot of nutrients if oxidation occurs. For example, if you try to juice an apple in a centrifugal juicer, often times the apple juice will come out brown due to oxidation. However, for home use, you won’t find anything cheaper or faster than the centrifugal juicer.

Typically, the home juicer is very easy to take apart so that you can clean the different parts of the machine. This is very important, because you want to keep them sanitary. You must clean your juicer after you use it. Often times, juicers will come with a small cleaning kit. An important part of the cleaning kit is a tooth brush. Basically, you need a small brush to cover any small crevasses in the machine to make sure that you do a thorough cleaning job.

Remember to clean the filter right after you use the machine. Otherwise, the sticky pulp will clog the filter and you’ll have a mess on your hands the next time you try to use it. So, hopefully these tips will help you in choosing a juicer that is right for you. Remember, a juicer plays a vital role in your health and a healthy lifestyle.

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With Masters of Accounting Improve Your Designation

Accounts are the basic for all the business. Whether it is an industry or an organization it is necessary for the staff of the admin to know more about accounts. The candidates who are related to the management have to possess the knowledge of accountancy. It is better to get the knowledge of accounts through education and training. This is possible with the accounts degree.

The masters in accounting or the master degree in accounting is a degree mainly for the management of any type of organization. This qualification is considered by the employers as an addition to the candidates’ education. The technically qualified candidates also can finish their master of accountancy to get the jobs in the management side. There are many divisions in this degree like the business administration, health services, education, professional accounting, and public administration. This degree increases the knowledge of accounting. Whether the business is big or small the knowledge of accounts for the admin or management staff is inevitable.

Prerequisite for Masters In Accounting

The colleges providing master of accounting degree will admit students who have completed their degree in any discipline. The candidates who have completed their degree in any other subject, even if it is technical can go for the master of accounting degree. Many organizations pursue the candidates to get into the colleges to do the master degree in accounts to get good service from the candidates. The knowledge of accounts will help the candidates in many ways to manage the incoming and outgoing accounts. Whether it is stock or money accounts degree will give training to the students.

MSA (Masters In Accountancy) Degree

To maintain the accounts a degree in commerce will be very necessary. But for the people who are not qualified in commerce and have any other degree can get into MSA degree with their minimum degree qualification. The master degree fee varies from college to college. Some colleges have the fees of $40,000 and range up to $70,000. There are courses which are offered in the day colleges and also night colleges. The course duration for masters degree in accounting is two years. It is better to go online to know the fees of the degree. Sometimes it is better to get in touch with the college authorities for getting full information about the fees.

Online Masters in Accounting

When there is a busy schedule it is difficult for the candidates to complete the course of master in accounting. Internet is a boon for such people. Online masters in Accounting can be done successfully with the help of some special colleges which gives distance education. Accounts are mainly the knowledge about liabilities, valuation, equity assets, capital stock, receivables and payables. The study material can be down loaded or can be got through post.
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