CATEGORIES

TODAY IN HISTORY

    AMERICA INVENTS ACT
    September 16, 2011 - America, U.S.A.

    President Obama signed into law the America Invents Act which made substantial changes to the U.S. patent system. Taking effect 16 Mar 2013, a provision of the Act establishes a "first-to-file" priority. No longer may a patent be contested on the basis of another person claiming to be the first to invent an invention. "Prior art," used to exclude patentability, was expanded to include public use, sales including foreign offers for sale, publications and disclosures available to the public anywhere is the world as of date of filing. Previously, for example, when William Kelly asserted he was first to invent his "air-boiling" process to refine steel, he was awarded patent priority (23 Jun 1857) over Henry Bessemer in the U.S., even though Bessemer was first to file. Now inventors must file for patents as soon as possible.

    DENMARK ELECTS FIRST FEMALE PRIME MINISTER
    September 16, 2011

    After elections in Denmark ended, the center-left bloc led by the Social Democrats won a narrow majority, making their leader Helle Thorning-Schmidt the country's first female prime minister. Thorning-Schmidt ran on a platform of increased taxes, increased government spending, and a strange proposal to have workers add twelve minutes to their workdays in order to increase productivity.

MEMBER LOGIN

RANDOM QUOTES

  • A Change is Gonna Come
    by Meredith Grey

    "...Change; we don't like it, we fear it, but we can't stop it from coming. We either adapt to change, or we get left behind. It hurts to grow, anybody who tells you it doesn't is lying. But here's the truth: Sometimes the more things change, the more they stay the same. And sometimes, oh, sometimes change is good. Sometimes change is everything...."
  • The wealth of the nation
    by Earth Day, Gaylord Nelson

    "...The wealth of the nation is its air, water, soil, forests, minerals, rivers, lakes, oceans, scenic beauty, wildlife habitats and biodiversity that'as all there is. That'as the whole economy. That'as where all the economic activity and jobs come from. These biological systems are the sustaining wealth of the world...."

RANDOM FACTS

  • Salary
    about Steve Jobs

    Steve Jobs' annual salary was $1, just enough to keep company health benefits. Cancer Facts & Figures
    about Besides Lung Cancer

    Besides lung cancer, tobacco use also increases the risk for cancers of the mouth, lips, nasal cavity (nose) and sinuses, larynx (voice box), pharynx (throat), esophagus (swallowing tube), stomach, pancreas, kidney, bladder, uterus, cervix, colon/rectum, ovary (mucinous), and acute myeloid leukemia.

Going further inside HVAC :

Choose Your Color :

ARTICLE INFORMATION :

Regardless of whether you're a skilled heating technician or perhaps are interested in the Heating and cooling marketplace then this article may be for you.

ARTICLE CONTENT :

Whether you are an experienced heating technician or simply just have an interest in the HVAC sector then this write-up is designed for you. It'll provide you with a backdrop to the HVAC sector to make sure you will be more aware about the areas it encompasses. The first aspect we are going to take a look at is the topic of heating. What exactly do we mean by heating? It does depend upon what you will be heating up. As an example if you are looking to warm up the front room in your home on a cold winters night then you may just need a portable heating device. However if you are looking to heat a larger area you might need to use something else entirely.

Many buildings use a central heating system to supply heat. This approach might use a central heating boiler, heat pump or possibly a furnace. Heat created will then be dispersed using a system of piping or ducts. The dispersal network will be chosen dependant upon the building that is being heated up and the type of central heating unit in use. The second letter in the abbreviation HVAC is V for ventilation. Ventilation comes in various forms but is going to fit in 1 of 2 areas. Either forced (also called mechanical) ventilation or natural. Mechanical ventilation can be achieved through the use of fans to either remove air or to inject fresh air in to a room.

Natural ventilation is much easier to achieve, believe it or not as simple as opening up a window. However typically this will be accomplished by either a vent or even air bricks. One benefit of natural air flow is it can help to eliminate the spread of airborne diseases such as the flu virus. Another good rationale to implement natural ventilation is the fact that it truly is inexpensive plus relatively easy to operate. Ventilation is essential in establishing a heating system. The explanation for this is whenever there is very poor ventilation then there could be a build-up of gases.

This might trigger smaller challenges including ineffectiveness in the heater or larger challenges., for instance a large amount of carbon monoxide might cause poisoning or possibly loss of life. Last of all we come to the air conditioner component of HVAC. Air conditioning may be put in position with fans but a majority of solutions operate in the same basis as the air-con inside your car. This process usually operates by using a special fluid in pipes. As this liquid warms up it'll take in the heat when it turns into a gas. This'll then travel around the system as a gas to become re-condensed, starting the complete process once again.

The fantastic thing about some air conditioning units is this technique can be altered to produce heating instead. Of course this will not work with all air conditioners but it's a feature to be familiar with. So there you have every one of the aspects that comprise HVAC, discussed in a little more detail. However this is merely an outline. Next, to be able to learn even more details regarding

ARTICLE SPONSOR :

  • Ambirad
    A leading European manufacturer of gas-fired radiant heaters and supplier of warm-air systems and air curtains.

ARTICLE STATISTICS :

  • 4149Article ID :
  • Grover JadinOwner :
  • Free Articles / LifetimeArticle Type
  • November 28, 2014Date Added :
  • NeverExpires :
  • 0Average User Rating :
  • 0Total User Votes :
  • 0Reviews :

RATE ARTICLE :

Please rate this link article.
You must be logged in to be able to rate an article.

USER COMMENTS :

No user reviews have yet been made or approved for this article.

You must be logged in to be able to leave a comment.