Heat Transfer

A heat exchanger is a device used to transfer heat from one substance to another. Let's take a look at how it works.

How a heat exchanger works

Heat is actually particles that are moving about. The atoms are heated when they are moving at a faster speed. Heat exchangers work by finding balance or equilibrium between the particles. Equilibrium occurs when the object with greater heat gives more energy to the one with less heat. Hence, a heat transfer or exchange occurs.

Uses of a heat exchanger

Heat exchangers are widely used in the industry, as they are an integral part of many processes. Refining fossil fuels and processing natural gas requires the use of a heat exchanger. They are also used in treating waste water and sewage by maintaining temperatures in which water can be optimally purified through the use of microorganisms that remove pollutants. In everyday life, heat exchangers can be found in devices such as air conditioners, refrigerators and freezers, and radiators.

Aside from being necessary in industrial and chemical processes, heat exchangers also help homes and businesses cut down on energy costs by making use of heat more efficiently. Heat exchangers can take heat generated by one process and direct the heat to another place where it is needed.

Ever went to a circus or any shows that have people eating fire? It's quite disturbing, isn't it? But I've been curious about these people. I want to know how they eat fire without burning themselves, and how they eat fire happily. I bet you feel the same way. On the other hand, I admire the skill of these people. I'm sure they trained hard just to learn how to eat fire.

Here are some fire-eaters whom you can contact if you want an exotic performance: Frank Olivier, a comedian and a magician who performs for royal families and presidents; Charlie Franks is an impersonator of Elvis Presley and a fire-eater as well; for a female fire-eater and a hypnotist, Pattie Freeman is the name; Roderick Russell comes from Burlington, VT; lastly, who would forget Mario Manzini who was awarded with a Guinness title.

I've never experienced kissing ever since. In reality, that's a joke. Fire-eaters also have their love lives, but can you imagine how they could kiss their loved one after eating fire? It must be one hell of a bad breath experience! Gasoline smell and burning tongue, these are what fire-eaters get after their performance. If given a chance to kiss a hot and sexy fire-eater, would you take the opportunity? I would! But before anything else, I would give her a bottle of Listerine.

Winter is a season of ice skating, skiing, snow man, avalanche, and frostbites. Frostbite is the most common problem that occurs every time snow flakes start flooding the streets. A frostbite, according to sportsmedicine.com, is a damage to the tissues caused by exposure to temperature below 32 degrees Fahrenheit. You'll feel that your body is being pricked by thousands of needles and pins. After that, the skin appears numb, white, cold, and hard, and finally becomes red and swollen.

Hongbin Ma, a researcher and an engineering professor at a university in Columbia is building a unique glove that will reduce the danger of getting frostbites. The polyester glove will have five pipes that contain a liquid that will transfer heat throughout the fingers. It will use the body heat to produce steam. Having a glove like this is like attaching a kettle with five pipes on your arms. I don't want to imagine how I'll look like wearing one.

I don't know how much a steaming glove would cost. I wouldn't bother buying such a thing if it would cost me the same price with personal digital assistant. Ma is a great engineer specializing on thermal energy. He is also planning to put the same technology on shoes. But I have to say, he shouldn't bother. Steam leads to moisture, and moisture leads to athlete's foot. Athlete's foot, as well all know -- leads to death.

As we all know, unless you're a sucker who doesn't know anything, a healthy and balanced body temperature is maintained by our nervous system. Thermoregulation or the system's way of retaining the body temperature at a normal rate is done via sweating and bloodflow in one's skin. However, when one's temperature rises abnormally and the system cannot do heat transfer to keep the body cooler, heat-induced ailments take place.

But if you want to be like the losers who don't read my blog and look literally hot and stupid this summer, here are some ways to increase one's risk of experiencing hyperthermia. Wear at least five thick jackets on top of a wool shirt to make sure that you won't feel the air inside and out. Coffee and carbonated drinks increase dehydration so consume as much as you can and avoid water. Also, make sure that you're in a place with poor or no ventilation at all. If you've got yourself a car, park it outside an open area where it will receive full blast of the heat wave. And make sure that you detached the AC and lock yourself inside it for five hours. After trying these steps and you can still read this last sentence, then you're not successful.

Summer has just began and some people become so excited and not to mention stupid for spending all day bathing under the sun instead of the water. Spending too much time in the sun is the easiest way to get a tan especially this season. But as for me, it is the fastest way to kill yourself, and to earn a free skin cancer as well as other heat-related diseases.

A person with the intellectual range of a cockroach once said that heat exhaustion is the same with heat stroke. But that's not true, since it is a condition when a person exercises in a very hot place that his body overheats. This happens because most of the fluids in the body are lost due to excessive sweating. It's like an automobile that suddenly smokes when you're racing too much under the sun. Meanwhile, stroke is more fatal because it is the condition wherein the body's temperature increases so much that it damages the brain or other internal organs.

Exhaustion symptom's are excessive sweating, paleness, dizziness, and nausea. To avoid this heat-related condition, drink lots of fluids, bathe regularly, and wear lightweight clothing always. Stay out of the sun as much as you can, unless you're an egg of a scaly dragon that needs heat to hatch.

The moon gets its light from the sun. Therefore, we can also get energy from it aside from solar energy that we are currently enjoying now. According to Dr. David Criswell, the moon can provide a clean, emission-free, and unrestricted source of energy. This is possible by beaming the sun's energy to the Earth through lunacy. The sun provides at least 13 terawatts of heat or energy for the moon. Perhaps, getting one percent of it to supply the Earth's energy needs would not be harmful.

The proposed Lunar Solar Power System (LSP) will use moon materials to establish bases in the moon that will gather solar energy and turn it into microwaves. This will be transmitted to the receivers surrounding the planet and change it to electricity to feed the energy hungry planet. The idea of using LSP as an alternative reservoir of energy is feasible. However, the problem that would hinder this effort is cost. Building the bases for power generation means sending people to space, which is completely expensive, not unless the government and some concerned citizens will help fund the project. It has been 20 years since men went to outer space, and a return journey with a project to conduct will not be that easy.

The Earth, as mentioned in several science books and nature documentaries, gets increasingly hotter as you go near its core, where the temperature reaches up to over 7,600 degrees Fahrenheit. Many scientists and researchers are interested in searching for methods to tap some of the potential energy stored in the radioactive material and use it to produce an abundant source of electricity. The dream for better use of geothermal energy has been a subject of geothermal researches and studies.

Recently, Idaho Laboratory ventured into rigid geothermal studies through the financial grant given by the U.S. Department of Energy. The study focuses on extracting heat from rocks on earth that are deemed alternative energy resources. Rocks have high-grade geothermal energy. However, creating a fracture on them is necessary so that flowing water can efficiently extract their energy. I think this strategy is simple, but it needs further planning because it might ruin the natural cycle of the planet.

I made a quick Internet search, and I found that springs are warm because boulders transfer their heat into the water. The US has sufficient megawatts of geothermal-generated electricity, but it wouldn't be enough to power the growing number of households. If the study will be successful in uncovering ways of using the earth's heat, our electricity can be limitless.

We inhabitants of the planet must join hands to launch the green revolution and save the Earth from future degradation. All of us can create our own simple way of conserving energy especially in our own home. The kettle is among the biggest household energy-driven tool that most of us can't live without. Heating water for coffee, tea, hot bath, and foot ailment remedies is extremely important.

The energy used in boiling a kettle of water is equivalent to the power we use to light a room for the whole evening. Hmmm, and more than that, most of us heat too much water than what we actually need and boil kettles twice before making a cup of coffee.Since we re-boil kettles when there's no reason to, the best solution or alternative to conserve energy and keep the water's heat all day is have a thermos and a kettle combined. We have kettles, thermos bottles or thermos jars that can operate without using electricity, but I guess you will rarely find this things anymore because of the impact of technology, unless you go down to the real wet and dry market. However, experts say that the possible and more efficient way to prevent the increase on electric bills is to boil the right amount of water.

Based on a news report this morning, the drastic changes in climate, high demand in water supply and tourism are placing our famous deserts' ecosystems in a whole lot of pressure. But there's no worry for that because international organizations are wholly active in solving any problem that will arise concerning these arid lands. The Global Deserts Outlook, which is a brainchild of the United Nations Environment Programme (UNEP), is considered as the first in-depth view on the world's driest regions, which campaigns for the careful and proper use of water sources to protect the future of desert populations.

According to UNEP representative, Shafgat Kakakhel, deserts are not only barren lands because whilst it's being subjected to the pressures of modernization, it is considered as economically and biologically important. The deserts if combined altogether is equivalent to one-quarter of the land surface of the planet and serves as a habitat not only for most species of flora and fauna but for an approximate of 500 million people. The biological threat for arid areas is greatest in most inhabited deserts. The incessant growth in the population and improper use of water sources may lead to water stress. At worst, water scarcity by the year 2050 in deserts including Iraq, Chad, Syria and Niger may be felt.

I'm in New York right now, currently sitting in one of the dainty seats of Starbucks coffee shop, sipping my latte and staring at the blank screen of my computer. I'm concentrating on my idea of creating the future novel that will give Dan Brown a run for his money. Nope, I don't have plans to contradict Vatican's policies, because firstly, I don't want to be sued by a lot of people due to the scandal that my supposed bestseller will bring. Secondly, I'm not aiming for a movie adaptation of my books which will star either Jude Law or X-men star Hugh Jackman. And lastly, this first paragraph is just a crap because I'm losing ideas on how to start a good blog entry again.

Anyway, I'm really here at the world's best loved cafe, with my laptop resting innocently on the table, a coffee in my right hand and a lighted cigarette on my left. As a writer I like to spend time in cafes where ideas and mocha frappes are both overflowing with cream. I'm sorry to the guy at my right side, I really can't help myself from overhearing his telephone conversation and write an article about it. Based on what I've heard from the guy who has a mobile phone for an ear, Paratherm Corporation recently created a heat transfer fluid that will make it easier for engineering companies and factories creating plastic products to mold and cure hard plastics.
The Paratherm MR Mid-Range Heat Transfer Fluid is a non-toxic, high efficiency product that is use
for machines that blow molds plastic bottles, and automobile dashboards and other container use for food processing. I think this is the first time heat transfer will be used in the plastic manufacturing industry. Anyway, I have to end this entry as soon possible because this nosy service crew is reading my article upside down.

Since time immemorial geologists, scientists, mineralogists and archaeologists have been interested with the study of the activity of minerals inside the planet's core. As we all know, the Earth is made up with various chemicals and minerals in and outside its crust which makes it to be the first and only living planet known and available to mankind. Well, this statement is true as far as we Earth inhabitants are concerned, although there are some scientists claimed that living in other planet circling the sun is already possible due to studies of the existence of bodies of water in their crusts just like in the planet Mars. Speaking of minerals, magnesiowustite is amongst the common stones found inside the depths of Earth which can send infrared light at average atmospheric stress. But according to new studies, if this mineral is crushed to a maximum pressure at sea grade, the stone in place of transmitting the light, absorbs it making it difficult for heat to flow. In the said study, two scientist measured light wavelengths passing through a pressurized sample of magnesiowustite. They found out that it takes in most of the ray of light making it clear that it is a poor conductor of heat especially in intense pressures.

The heat flow beneath the core of the Earth is very essential in the study of its development and edifice. With magnesiowustite composing most of the inferior mantle, the heat transfer to other areas might not be possible through radiation but through convection and conduction. However, the amount of the heat transfer under derived from these three processes is still under serious studies and research.

Writing on heat transfer once again brings me back to high school days when physics was my favorite subject. Mind you, I was not a bookish freak who studies and does his homework all the time. But I did good, considering I aced a general science exam in my first year and did superb in my physics. Anyway, my so-called glory days unfortunately included only explaining how car functions and not something on house and construction.

Did you know that there are actually different materials in your home that allow heat transfer to be slower? That's right; they are called insulators. Well, prior to writing this subject, the only insulators I know are the ones that we use to clothe our bodies, but apparently, there are some other insulators besides fur and foam that are used in constructing the house and making it a warmer place to stay. For instance, bricks are actually good insulators because when you use them as walls outside the home, the spaces between the bricks allow air to remain trapped. Another amazing thing I discovered is that windows that are double-glazed also contribute to insulating the home. Double-glazed variants consist of dual glass panes and these comprise a vacuum that would keep air in. See, we can learn and do something about heat transfer, even right in our very own homes.

Before I take my night bath, I heat my water first because for me, hot water helps relax my muscles and calms my nerves especially after a long day of hard work. But, if you're going to try this at home, just make sure that it's not hot enough to burn your skin, or else we're going to get a huge problem there. I really think bathing in hot water tub is effective and cheaper instead of buying aroma oils and cute scented candles that sometimes have allergens that is not safe for those who have allergies with perfume oils.

But as the price of gasoline increases, should I turn my stove off and switch my electric water heater on? Electric water heaters are good especially when you enjoy taking your hot shower before going to a restful snooze. But if you are like me, who enjoys a deep slumber on my bath tub, well, I guess you should stick to your gas. Heating electronically, though would produce more hot water, will only increase your electric bills. On the other hand, though we are suffering from a worldwide oil price hike, using gas for heating is less expensive than electricity.

Actually, you can purchase a gas water heater that can give your family a sufficient amount of water needed for the morning and evening bath. There are web sites where you can canvass gas water heaters, so you can choose based on price and efficiency. You can also ask your trusted plumber for recommendations on products like these that they've tried before.

In the Northern part of Greece, folks and some tourists walk shoeless above hot smoldering coals as a component of a worldwide holy festival in respect of Saint Helen and Saint Constantine. In America, there's also a newly established religious group of fire-walkers. Some celebrity wannabes and contestants for beauty pageants also join these groups in order to build their so-called confidence.

When you watch fire walkers on your high-tech TV, you sometimes give comments like, " that's just camera trick" or " the special effects men strikes again". But honest to goodness, those people are literally walking through the fire. But how are they able to do that? Do they have super powers?

Well, fire walkers like those in Greece for instance think that Saint Helen's or Constantine's power provide them the miracle to do it. But science experts aren't convince and they gave their own explanation about it. They argue that a person can walk transversely in a burning wood because wood and the person's sole are both poor conductors of heat. They added that it isn't a death defying stunt because the contact between the ash-covered coal and feet is too fast that's why it will be unable to scorch the feet.

Heat transfer basically takes places when two objects with totally different temperatures are put together. When the temperatures of these two objects finally reach equilibrium, heat transfer has taken place. But, generally, there are three ways by which heat transfer transpires. This is through radiation, conduction, and convection.

A concrete example of heat conduction is when a poker gets hot when it contacts hot coals. Another typical example is when a kettle's content boils because of the heat produced by the burner. This heat reaches the kettle from the bottom until the water boils.

Heat radiation, on the other hand, is far more complicated the conduction. This is so because the intensity of radiation should be known in all directions. In addition, its intensity must be infinite in numbers. For this particular reason, two opposing directions should be distinct because the radiation in one direction is not the same with the radiation in the other direction. When a fluid and a solid with different temperatures are combined, convection heat transfer occurs. However, it must be taken into consideration the considerable movement of fluid inside or within the solid object.

Simply put, temperature is the measurement of an object's warmth or coolness. It is also defined as the amount of kinetic energy that a matter has. Under the effect of thermal fluctuations, the photons of a matter is agitated which determines its temperature. Basically, the activity of a body’s molecules determines its hotness or coolness. The more active a body’s molecules are, the greater amount of kinetic energy it has thereby increasing its temperature. One of the instruments that can be used to determine temperature is the thermometer. How does it work? Simple, a clinical thermometer is placed near the object that has to be measured and is allowed to reach thermal equilibrium. This contact makes the mercury inside the thermometer rise. Wherever the peak of the mercury is, it determines the temperature of the object.

In the 19th century it was believed by many that the hotness or the coldness of an object is determined by how much heat it possessed. Back then, heat was thought of as a liquid that transfers from a hotter to a cooler object. Until Joseph Black published his work, the distinction between heat and temperature has not been established.

Heat transfer is an important aspect of industrial engineering. Some of the most efficient heat transfer products could be found at HT Products online. You can choose among the various industrial products that they offer from boilers to storage tanks to water heaters.

Most notably, the type of water heaters available at HT Products can be indirect, oil-fired or electric. Pool and marine heaters are also part of their catalog. Some residential systems may require boiler control systems--with Munchkin and Vision II and III as the most popular models.

Heat energy has the tendency to spread from a higher gradient to a lower gradient. Heat eventually dissipates in the process. Heat is a less ordered form of energy which means that it is hard to store heat similar to storing electricity in a battery.

Most power plants such as geothermal and nuclear, functions because of heat. Heat energy in power plants are converted into mechanical energy in the spinning turbines and the mechanical energy is converted into electrical energy by the dynamos connected to the turbines. In this process, heat energy is transferred through conduction. The geothermal or nuclear heat energy is transferred to water which boils to produce force.

Ever wondered why summer wears come in bright and light colors? Well, that can be explained by heat theory.

Heat energy moves in various ways. One of them is radiation that comes from the sun. Since there is no medium between the earth and the sun through which solar energy can be transferred, sunlight travels directly towards the earth. This movement is called radiation.

The moment the sun rays reach the earth, they are either asorbed or reflected. If a surface is dark, it absorbs more radiation, yet if it is light, it reflects more.

Now, you know what you need to wear next summer in order to protect your skin and health.

Heat transfer occurs in three ways. It manifests in the everyday occurrences: from conductors to the atmosphere to the simple fireplace where we warm ourselves during winter.

Conduction occurs when atoms displace and move to another via kinetic energy. It happens when a barrier is removed, resulting in collisions that occur between molecules and atoms. Conductors are useful in the electronics industry.

Convection occurs in the atmosphere and is comparable to liquid osmosis, where heat flows from one region to another.

Radiation is the transfer of heat via light. Radiation occurs when conduction and convection is not possible. An example of this is the transfer of heat from the hot sun to the earth.

Science governs all our movements such as the simple pouring of hot water on a coffee cup. Did you know that from the moment the steaming water touches the bottom, all the molecules composing the cup, the spoon, and the coffee mix start to stir, moving until they reach equilibrium. In science, that is referred to as heat transfer.

Heat transfer occurs when two or more objects with different temperatures come together. Here, the heat energy of the object with a higher temperature is transferred to the material with a lower temperature until a balanced and equal sate is achieved.