What is a heat exchanger?

Suppose you have a gas central heating furnace (boiler) that heats hot-water radiators in various rooms in your home. It works by burning natural gas, making a line or grid of hot gas jets that fire upward over water flowing through a network of pipes. As the water pumps through the pipes, it absorbs the heat energy and heats up. This arrangement is what we mean by a heat exchanger: the gas jets cool down and the water heats up.

A heat exchanger is a device that allows heat from a fluid (a liquid or a gas) to pass to a second fluid (another liquid or gas) without the two fluids having to mix together or come into direct contact. If that's not completely clear, consider this. In theory, we could get the heat from the gas jets just by throwing cold water onto them, but then the flames would go out! The essential principle of a heat exchanger is that it transfers the heat without transferring the fluid that carries the heat.
What are heat exchangers used for?

Geothermal pool heat exchanger.

You can see heat exchangers in all kinds of places, usually working to heat or cool buildings or helping engines and machines to work more efficiently. Refrigerators and air conditioning coils, for example, use heat exchangers in the opposite way from central heating systems: they remove heat from a compartment or room where it's not wanted and pump it away in a fluid to some other place where it can be dumped out of the way.

Photo: A heat pump extracts heat from a natural geothermal hot spring, used to heat buildings at Hot Springs Lodge and Pool in Glenwood Springs, Colorado. The exchanger is the algae-covered plate full of copper tubes in the center of the water. Photo by Warren Gretz courtesy of US DOE/NREL (Department of Energy/National Renewable Energy Laboratory).

In power plants or engines, exhaust gases often contain heat that's heading uselessly away into the open air. That's a waste of energy and something a heat exchanger can certainly reduce (though not eliminate entirely—some heat is always going to be lost). The way to solve this problem is with heat exchangers positioned inside the exhaust tail pipes or smokestacks. As the hot exhaust gases drift upward, they brush past copper fins with water flowing through them. The water carries the heat away, back into the plant. There, it might be recycled directly, maybe warming the cold gases that feed into the engine or furnace, saving the energy that would otherwise be needed to heat them up. Or it could be put to some other good use, for example, heating an office near the smokestack.
In buses, fluid used to cool down the diesel engine is often passed through a heat exchanger and the heat it reclaims is used to warm cold air from outside that is pumped up from the floor of the passenger compartment. That saves the need for having additional, wasteful electric heaters inside the bus. A car radiator is another kind of heat exchanger. Water that cools the engine flows through the radiator, which has lots of parallel, aluminum fins open to the air. As the car drives along, cold air blowing past the radiator removes some of the heat, cooling the water and heating the air and keeping the engine working efficiently. The radiator's waste heat is used to heat the passenger compartment, just like on a bus.

If you have an energy-efficient shower, it might have a heat exchanger installed in the wastewater outlet. As the water drips past your body and down the plug, it runs through the heat exchanger coils. Meanwhile, cold water that's feeding into the shower to be heated pumps up past the same coils, not mixing with the dirty water but picking up some of its waste heat and warming slightly—so the shower doesn't need to heat it so much.


Radiant Beauty Cream Your makeup brush should be cleaned often. If you do not clean your brush, you might gather germs in them. If you don't clean the brush after using it, those same germs will be applied to your face As you can see, the strategies and products you use today can help you on your way to a more beautiful you tomorrow. This plethora of advice should help you develop your personal routine. Start today, using the tips above. As this article helped point out, developing a proper beauty regimen isn't as hard or complex as it may appear. They are more than worthwhile in the end, even with the research and technique practices involved. Using these tips, you can plan a better beauty routine.
Read More=========http://www.supplements4news.com/radiant-beauty-cream/

Endexam Netapp certification NS0-158 dumps book

Now in such society with a galaxy of talents, stabilizing your job position is the best survival method. But stabilizing job position is not so easy. When Netapp certification NS0-158 dumps book are fighting to improve their vocational ability, if you still making no progress and take things as they are, then you will be eliminated. In order to stabilize your job position, you need to constantly improve your professional ability and keep up with the pace of others to let you not fall far behind others.

Share some Network Appliance NCDA Certification NS0-158 exam questions and answers below.
Which two methods would be used to change root-data partitioning on an FAS2500? (Choose two.)
A. OnCommand System Manager
B. command line interface
C. System Setup
D. OnCommand Unified Manager
Answer: B,C

What are two FPolicy methods for applications? (Choose two.)
A. asynchronous
B. semi-synchronous
C. direct
D. synchronous
Answer: A,D

You create a 150 GB thick-provisioned volume. In that volume, you create a 50 GB LUN with space-reserve enabled. You create another 50 GB LUN with space-reserve disabled. Before any data is written to either LUN or a Snapshot is taken, how much space will be available in the volume for additional LUNs?
A. 150 GB
B. 100 GB
C. 75 GB
D. 50 GB
Answer: B

There are many Netapp certification NS0-158 dumps book providers that would guarantee you pass the Network Appliance NS0-158 exam. Endexam speak with the facts, the moment when the miracle occurs can prove every word we said.If you want to participate in the IT industry's important Network Appliance NS0-158 examination, it is necessary to select Endexam Netapp certification NS0-158 dumps book. Through NS0-158 NetApp Certified Data Administrator, ONTAP examination certification, you will be get a better guarantee. 

At the same time, you also can avoid some common mistakes. So you will gain confidence and be able to repeat your experience in the actual test to help you to pass the exam successfully.Endexam online Netapp certification NS0-158 dumps book includes simulation test and the current examination. On Internet you can also see a few websites to provide you the relevant training, but after compare them with us, you will find that Endexam online Netapp certification NS0-158 dumps book not only have more pertinence for the exam and higher quality, but also more comprehensive content.

Some people who used our Netapp certification NS0-158 dumps book to pass the IT certification exam to become a Endexam repeat customers. Endexam can provide the leading Network Appliance training techniques to help you pass Network Appliance certification NS0-158 exam.Network Appliance NS0-158 is a certification exam to test IT professional knowledge. Endexam is a website which can help you quickly pass the Network Appliance certification NS0-158 exams. 

Rome on a Shoe String Budget

July 1 — Canada Day: The festivities were unbelievable. I got an early start and explored Montreal before I participated in the Official Montreal Bicycle Tour where a certified tourist guide took our entire group through various of Montreal. Bruno introduced us to the major sights as well as to the beautiful and unique living areas of this diverse city. As an avid bicyclist I was delighted when I was able to keep the bike after our tour finished and I continued on my own on the extensive bicycle trail network along the Canal. I enjoyed a re-energizing lunch at the historic and had a nice chat with a local. After I returned my bike I sat down and talked with the owner of the bicycle shop about his business and about bicycling opportunities in Montreal.
Tours And Travels in Andaman
All this physical exercise had stimulated my appetite and I enjoyed a wonderful dinner at right in the heart of Old Montreal, and the owner gave me a first-hand overview of this popular and historic restaurant. The streets of Montreal were just absolutely packed with revelers. The Old Port of Montreal was buzzing with activity which included concerts, street performers, a huge entertainment area for children, even acrobatics on skis. The highlight of the evening was a concert that featured a variety of performers, from flamenco, to Cuban rhythms to Brazilian percussion and other world music. Finally the star of the show appeared: Gregory Charles, a multi-talented singer, piano-player, actor and media personality. The crowd simply went nuts and thousands of people kept streaming into Old Montreal even at 11 pm at night. This city knows how to party!!!

their national fifa 17 points account

buy fifa 17 comfort trade Canada is looking to make amends for a 2011 World Cup in Germany where it went winless."Hopefully a lot of us [Olympic team veterans] will still be around and we can help the young ones," said Sinclair 29.Herdman said his club has undergone a "mindset shift" as a result of its Olympic success and indicated the expectations will be high.'There's going to be a group of players here will be with the team that experienced London and they'll bring that mindset with them. Listen when you get down to these events a lot of it comes down to people's mindsets and I think we'll be a different group.' Canada coach John Herdman"Prior to London the team hadn't crossed the line before," said Herdman. "They hadn't even got past the quarter finals of these [large international] events.

Although the sport wouldn be the same without those sort of fans. So as we see there is constant communication between the fans and athletes. When athletes ask for applause it is communication. For instance by far the most popular activity is Football (Soccer). According to the respected buy fifa 17 coins 'Atlas do Esporte no Brasil (2007)' the game is actually played (not just watched) fifa 17 points by over thirty million Brazilians although of course at many different levels not all of them fifa 17 points ps4 highly organised! Given this background it's perhaps not surprising that Brazil has been by far the most successful nation ever in terms of the FIFA World Cup. The country has won the contest a total of five times the last time as recently as 2002.

The players win 5 tokens if they guessed fifa 17 points account the outcome correctly eafifacoins and 40 tokens if they guessed the exact score. (For example: if a player predicts a match with 1 3 and the result of real match is 1 2 he/she will win 5 tokens but if the result of real match is 2 1 he/she won nothing. Tokens can be redeemed with match credits coins player packs and even SOTWs (Superstars of the Week.). Ever since the hosting of the auspicious fifa 17 points foot ball even FIFA world cup an influx of tourists moved to this place and explored the region and since then flights fut 17 coins to Lagos came in to high demand. Lagos is the former Nigerian capital but the current commercial capital where it handles the major business activities going on in the country. Before this cheap flights to Lagos were mostly booked by the number of business travelers who for their business expansion purpose visited Lagos.

The announcement comes after FIFA President Sepp Blatter urged Iran earlier this year to end the ban on women watching football in stadiums. Women have been banned from attending men's sports matches since the 1979 revolution that brought hard line Islamic clerics to power. However Iran has allowed foreign women to attend matches of their national fifa 17 points account teams… Brown handled Public Relations and was regarded as the voice of EA. The exodus of executives under new management might be a cause for concern but the company's results have been strong. EA beat its guidance for the fifa 17 points ps4 last quarter helped by strong sales of FIFA and Madden as well as sustained growth in the digital domain.

How To Recover Yahoo Account | Yahoo Password Recovery Phone Number 1-844-442-6444 US

Take initiative in calling at the Yahoo Password Recovery Number so taking technical services will become easier. Contact Yahoo Password Recovery Number by dialing 1-844-442-6444 anytime and get the best solutions so resolve the technical matters will become easier to handle. Use helpline number and feel an ease to operate to work with your account. Consult support team soon!

Новини от София

Рaшко Младенов започва мандата си в Министeрството на културата с ревизия и рaзрешaвaне на кризи. За два месецa могат да се направят мнoгo неща, заяви новият служебен министъp на културата в студиото нa «Денят започва с култура» пo БНТ, като включи сред тяx и обявяването на конкурси зa директори в институциите, които сe управляват от «изпълняващи длъжността» дирeктори от години.

Ако не сте от града и имате нужда от евтини хотели София

Медиация в спора мeжду Българското национално радио и «Музикaутор» е сред първите задачи нa Младенов, като среща между двeтe страни е насрочена в министeрството за този следобед. Като приоритeт министърът определи ремонтирането на течaщия покрив на Националната библиотека «Киpил и Методий». От разговора обаче стaнa известно, че Младенов по-скоро нямa да се намесва в конфликтa в Софийската филхармония и призивитe за проверка на проведения в послeднитe дни от управлението на Вeжди Рашидов директорски конкурс, защото тaм вече е избран директор — Нaйден Тодоров.

«Аз съм на тoзи принцип — това е зaконово положение. Аз съм готов веднaгa да обяви конкурси за вcички незаети постове, заяви Младенов. Нa въпрос ще обяви ли кoнкурси за институции като Националния историчeски музей (където Божидар Димитров зaемa директорския пост по-дълго от обявeния в закона срок) служебният министъp отвърна: „Аз ги знам всичкитe поред. Разбира се. Може би нямa да стигне времето те дa бъдат проведени по време нa служебния кабинет, но аз cъм длъжен да обявя тези кoнкурси.“


Плочкитe по пешеходната част на булевaрд «Витоша» между улиците «Солунска» и «Нeофит Рилски» са се разместили. Вероятнaтa причина за това са солитe срещу заледяване, с които сe обработва настилката, обясниха от пресцентърa на Столичната община. Плочките в двaтa края пешеходната зона на улицaтa са разместени, като се редувaт възвишения и пропадания.

Те обaче са единствено в частта нa бул. «Витоша» в участъка oт ул. «Неофит Рилски» до ул. «Солунскa». Той бе изграден от компaниятa «Трейс — София» за сумaтa от 1 768 млн. лв. Товa беше втори етап от проектa, като частта от бул. «Пaтриaрх Евтимий» до «Неофит Рилски» бeшe изградена от турската компания, кoятo строи втория метродиаметър под «Витошa» — «Доуш иншат ве тиджaрет».

B другите части на улицата нямa подобни нарушения на настилката. От пресцентърa на Столичната община обясниха, чe настилката ще бъде ремонтирана зa сметка на изпълнителя, но едвa когато времето се затопли.

Simply try out the Roadrunner Phone Number

The users of the account can simply try out the Roadrunner Phone Number as well and make sure the trouble is quickly sorted with the help of the roadrunner number. The other choice would be the onsite help links which are easy to follow and always there at your service to make sure you can use the account smoothly.
Visit :- www.roadrunnercustomersupport.com/reset-roadrunner-password.html


the best approach to stop facilitate male pattern baldness or keep the onset of male example hair loss is to obstruct the development of Dihydrotestosterone or DHT. This is the thing that Provillus does. Provillus is made utilizing a particularly outlined equation that hinders the unreasonable provillus generation of DHT in the body. It is likewise implanted with substances that develop hair development and regrowth. This male pattern baldness treatment item is made utilizing 17 normal fixings that have been ended up being totally sheltered; the rundown of fixings including Vitamin B6, magnesium, zinc sulfate, and pumpkin seed separates.