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Search Results - HVAC

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HVAC (pronounced either "H-V-A-C" or "aitch-vak") is an acronym that stands for the closely related functions of "Heating, Ventilating, and Air Conditioning"- the technology of indoor environmental comfort. HVAC system design is a major subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is particularly important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and healthy building conditions are regulated with temperature and humidity, as well as "fresh air" from outdoors.

The invention of the components of HVAC systems went hand-in-hand with the industrial revolution, and new methods of modernization, higher efficiency, and system control are constantly introduced by companies and inventors all over the world. The three central functions of heating, ventilating, and air-conditioning are interrelated, providing thermal comfort, acceptable indoor air quality, within reasonable installation, operation, and maintenance costs. HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure relationships between spaces. How air is delivered to, and removed from spaces is known as room air distribution.[1]

In modern buildings the design, installation, and control systems of these functions are integrated into one or more HVAC systems. For very small buildings, contractors normally "size" and select HVAC systems and equipment. For larger buildings, building services designers and engineers, such as mechanical, architectural, or building services engineers analyze, design, and specify the HVAC systems, and specialty mechanical contractors build and commission them. Building permits and code-compliance inspections of the installations are normally required for all sizes of buildings.[citation needed]

The HVAC industry is a worldwide enterprise, with career opportunities including operation and maintenance, system design and construction, equipment manufacturing and sales, and in education and research. The HVAC industry had been historically regulated by the manufacturers of HVAC equipment, but Regulating and Standards organizations such as ASHRAE, SMACNA, ACCA, Uniform Mechanical Code, International Mechanical Code, and AMCA have been established to support the industry and encourage high standards and achievement.

Showing 1 to 25 of 247 Articles matching 'HVAC' in related articles.
Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next >>

1. How Heating and Cooling Systems Work
November 19, 2009

Climate control, heating and air conditioning is a process that was invented during the industrial revolution. Today, many different companies such as Goodman, Lennox, Carrier, Trane, and York manufacture furnace and AC parts for heating and cooling systems. The HVAC process uses a chemical (like Freon, for example) that is easily changed from a liquid to a gas and back, so that it can transfer heat as it goes. The system itself has three parts: A compressor, condenser, and an evaporator. The fluid arrives by way of a refrigeration line at the compressor (an indoor coil usually connec... (read more)

Author: Brant Reed

2. What Is Heat Loss?
November 18, 2009

Author: Cody Sanchez Article Source: MiNeeds.com, where consumers get competitive bids from Contractors. Read reviews, compare offers & save. It’s free! Article Link: http://www.mineeds.com/shelton/C-C-Mechanical-LLC/Articles/What-is-Heat-Loss Tags: HVAC/R , heat loss , Air Conditioning Repair Contractors , Commercial Contractors , Heating Contractors / Repair , Home Builders / Building Contractors / Construction , HVAC Contractors , Insulation Contractors , Waterproofing Contractors The typical home owner would like the inside of their house to be around 72 degrees on the inside in t... (read more)

Author: Mi Needs

3. Cut Energy Bills
November 16, 2009

Cut Energy Bills With Wind Power And Winterize Your Home Heading into this winter season many families are understandably nervous. It's a tough economy and many people are worried about their jobs and keeping up with rising costs. But there are many cheap, or free, things you can do to cut energy bills. Here is a list of some of the easy, yet effective, changes you can start making today. 1. Make sure your furnace is ready for the winter. Have a qualified HVAC professional check and clean your unit. Once the heating season starts make sure to change your filters monthly. If th... (read more)

Author: Jerry Morey

4. Folsom HVAC Choices
November 13, 2009

Folsom, California is a delightful city within the north-eastern portion of Sacramento bordered by beautiful Folsom Lake. Although Folsom was founded while the Gold Rush was going on, the actual housing boom happened when big businesses such as Intel and Aerojet joined Folsom. A good amount of these homes should be ready to upgrade their heating systems. A decade old furnace doesn't work nearly as well as a modern heating system. Folsom citizens are lucky to have three things that help to heat their homes: natural gas that is available for most homes, plenty days with sunshine that are ... (read more)

Author: Bart Whiltmen

5. An Introduction to Test Instruments
November 12, 2009

Electronic test instruments are used to create signals and capture responses from electronic devices under test to prove their proper operation or trace and repair faults, if any. Some of the most important and best test instruments that are widely used on a regular basis in various standard, everyday devices are air flow meters, moisture meters and HVAC tools (Heating, Ventilation and Air Conditioning tools). Air flow meters, also known as anemometers, are devices that measure the speed of the air flowing through a tube in a defined time segment. They are present in a spectrum of profes... (read more)

Author: Mike Smith

6. Building Commissioning
November 12, 2009

A building is a huge investment, which is why building owners should insist that their newly constructed edifice is functioning as it should. Nearly every industry has some form of quality control, and every member of the design & construction team has a quality control program, - the quality control program for the building owner is the commissioning process. The commissioning process exists to ensure that all systems in a building work independently and together to perform their intended functions. Systems typically included in the commissioning process are: Power distribution and metering, ... (read more)

Author: RM Polymers

7. How to Open a Hotel Business - Avoid These Mistakes
November 12, 2009

Starting even the simplest hotel or inn is a venture that carries with it a high amount of risk. Here are four top mistakes to avoid when opening a hotel business. Mistake 1: Not Raising Enough Capital A hotel owner generally purchases the property of the hotel, and the down payment alone may be substantial. Factor in all of the additional costs before you can invite a guest inside - renovation, HVAC, electrical, plumbing, computer systems, initial marketing, and supplies. Then, without good, conservative projections of your costs and revenues over the first year, hotel owners can ... (read more)

Author: Eric Powers

8. Energy-Efficient Home Renovations Market
November 07, 2009

Energy-Efficient Home Renovations Market, Part 3: HVAC & Roofing report ( http://www.bharatbook.com/Market-Research-Reports/Energy-Efficient-Home-Renovations-Market-Part-3-HVAC-Roofing.html ) shows that green building is no longer just a fad; in fact, energy-efficient remodeling and renovating is one of the few aspects of the U.S. construction business that still holds a positive outlook in the midst of the economic turmoil in 2009. The U.S. residential construction market was $363 billion in 2008, down 41% from its high of $620 billion in 2006. The home renovations market was $188 billi... (read more)

Author: Bharat Book Bureau

9. Buying an Existing Pizzeria Part 1
November 05, 2009

What Equipment to Inspect Since pizza equipment and supplies are paramount to successful day-to-day operations, it should be inspected and checked before purchasing. It should be noted that when you take new ownership of a restaurant, you are subject to current regulations. This means that if a piece of equipment or HVAC was “grandfathered” as allowable for the previous owner, it will not be for you. You need to try to have the local inspectors come in and give you reports of the inspections. This costs money up front but it is much better to know before hand then after you have ma... (read more)

Author: Jesse Starr

10. About Energy and Energy Efficiency
November 05, 2009

Scientists claim that global warming is fast approaching and satellites ratify their claims with pictures of melting icebergs in Antarctica and Arctic. Indeed it is high time to wake up and take notice, before it is too late. The results have been initiatives in technologies that promise significant energy efficiency and focus on going green; the air conditioning and other mechanical services included. Studies reveal that a total of 30% to 40% energy consumed by human kind is used up in buildings – almost 50% of the energy used in Australia is used for cooling and heating commercial comp... (read more)

Author: Louise Lambert

11. An Introduction to Test Instruments
November 01, 2009

An Introduction to Test Instruments Electronic test instruments are used to create signals and capture responses from electronic devices under test to prove their proper operation or trace and repair faults, if any. Some of the most important and best test instruments that are widely used on a regular basis in various standard, everyday devices are air flow meters, moisture meters and HVAC tools (Heating, Ventilation and Air Conditioning tools). Air flow meters, also known as anemometers, are devices that measure the speed of the air flowing through a tube in a defined time segmen... (read more)

Author: Doug Williams

12. Home Hvac: Providing Comfort
November 01, 2009

HVAC (pronounced either as "H-V-A-C" or "H-vak") is an acronym that stands for the directly related functions of "Heating, Ventilating, and Air Conditioning"- the technology meant for indoor environmental comfort. HVAC (Heating Ventilation Air Conditioning) system design is a most important sub discipline of mechanical engineering, working using the principles of thermodynamics, fluid mechanics, and transfer of heat. Refrigeration is at times added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped like in HACR (such as the designation of HACR-rated circuit breakers). ... (read more)

Author: Todd Submitoff

13. Becoming HVAC Certified
October 27, 2009

One main priority of all families is to be comfortable in their own homes. People will always have a desire to stay cool in the summer months and warm in the fall and winter, and it is for this reason that the HVAC field will always be in demand. HVAC stands for “Heating, Ventilation, and Air Conditioning” and provides an opportunity for those willing to stay focused to earn a respectable income. The HVAC industry is one of the easiest to enter, and an individual can become involved through one of many paths. From servicing residential and commercial clients as a technician to providing parts ... (read more)

Author: Crystal Ware

14. Mechanical Animation and HVAC Design Services
October 22, 2009

Mechanical animation is a process of animating mechanical components in the context of a larger system. CAD assembly can be used as a starting point for creating a dynamic model as well as a realistic animation of the mechanical components. The paper also describes how a dynamic model created from the CAD assembly is integrated into the larger model. The resulting model and animation are used for detailed analysis and visualization. Mechanical animation of mechanical systems and components often starts with CAD tools. These tools are useful for indicating the detailed three-dimensional me... (read more)

Author: Kelvin Aniston

15. Latest news from HVAC Tax Credit
October 16, 2009

05/12/2009 Egg Systems has been in the news for over 19 years showing the public how they can save money and the enviornment using Geothermal Technology. Remember, a geothermal heat pump doesn't create heat by burning fuel, like a furnace does. Instead, in winter it collects the Earth's natural heat through a series of pipes, called a loop, installed below the surface of the ground or submersed in a pond or lake. Fluid circulates through the loop and carries the heat to the house. There, an electrically driven compressor and a heat exchanger concentrate the Earth's energy and release i... (read more)

Author: June Smith

16. Construction Management Software - An Alternative to Guesswork
October 05, 2009

Even small and medium size companies can have projects that are very detailed in nature. A simple room addition can has everything from permits, to foundations and framing to electrical and finishing. Add in HVAC and it's not hard to see how big a little project can be. There are many ways to handle these details. These include white boards, spreadsheets, magnet boards and poster boards. These are good tools, but provide all of the pieces separately. All of the timing and scheduling issues are worked out by hand. If there is a delay from weather or a vendor, look out! All of the ti... (read more)

Author: David Kraft

17. Arizona and California Residents Buying More Heat Pumps
October 02, 2009

Heat Pumps becoming More Popular for Heating and Air Conditioning Arizona and Southern California are excellent areas for Heat Pumps Areas like Arizona and Southern California are really starting to warm up to heat pumps. Heat pumps have been available for years, but recent rises in energy costs mixed with economic concerns have lead people to replace their aging air conditioners with heat pumps to save on costs. The reason why heat pumps are gaining popularity in southwest states like Arizona and California is because their limitations are nullified by the warm winters. Heat pumps ... (read more)

Author: William Hauselburg

18. Asbestos in the Home: Know Your Options
September 25, 2009

Asbestos can be a carcinogen and can be dangerous to your health. If your home was built between 1930 and 1950, it may have asbestos insulation. Before its nationwide ban in 1977, asbestos was also commonly used in patching materials and ceiling compounds. In older homes, asbestos was a popular choice for insulators around pipes, ducts, stoves, and furnaces. If you have a newer home, you probably won't find traces of asbestos around the house. While home construction rules regarding the use of asbestos are not as stringent as those governing schools or other public buildings, most manufac... (read more)

Author: Stacy Winsel

19. Increase profits for your business with HVAC software.
September 25, 2009

Bella solutions offer a web based software called HVAC service software, which is designed to guide you in your HVAC service business more efficiently. It saves your valuable time and money. In order to get more information you can visit our website. Bella provides you software that directs your business and increase profits and sales. You just need to login to Bella Solutions and manage your employees, vendors and customers. Now easily streamline your process and quickly receive payment for services performed. Easily view all Job estimates that allow you to see quickly where to spend your eff... (read more)

Author: Peter Grantaire

20. AHR EXPO 2010
September 25, 2009

We're talking big. Not just in size, but in importance to the HVAC&R industry and your business. That's why, year after year, HVAC&R industry professionals make it their business to attend - to buy, sell, network and learn. Returning to Orlando, Florida for the first time in five years, AHR Expo 2010 will bring together more than 1,800 exhibiting companies, dozens of industry organizations and over 25,000 visitors from all 50 states and over 120 countries. Plan now to be part of the world's largest HVAC&R marketplace - with thousands of products and new technology on display, it's al... (read more)

Author: Ricardo Liu

21. Heating and Cooling Systems - Ensuring Your Home's Comfort and Safety
September 24, 2009

Your primary goal is to keep your home comfortable for you and your family. When it comes to your home's heating and cooling systems, you need to become an informed consumer. You need to learn about your home's mechanical systems and simple things you can do to save money and get the most from it. Additionally, ensure that your mechanical systems are operating safely and efficiently. It is necessary not just to learn how these systems work but also how to shop smart and protect your family and investment so go ahead and explore the choices available to you. With the HVAC services, you... (read more)

Author: Scott HVAC Thompson

22. Southern California Air Conditioning Sales Slow, Bright Future Expected
September 24, 2009

Despite Slowing Sales, Air Conditioning Industry Looking Forward to a Bright Future According to a report by the Heating, Air conditioning and Refrigeration Distributors International (HARDI) summer 2009's air conditioning sales were like the weather, not so hot. Summer weather and air conditioning sales generally go together in California. When it is hot outside for weeks on end, people need an air conditioning unit which can keep up with the demand. Extended heat during the summer month can also lead to older units burning out. With a more mild summer, these issues don't pop up. Because... (read more)

Author: William Hauselburg

23. China Refrigeration
September 18, 2009

As the world leading HVAC&R trade show, China Refrigeration features a wide range of exhibits, with the latest advances in technologies reflecting the most significant developments and achievements in the industry. China Refrigeration is an ideal marketplace for the companies in the industry to launch the latest products, technologies and to find what they want, for professionals to buy, sell and build up business network. It is an annual grand occasion for the industry to share their innovations, create market opportunities and to meet cooperation partners. Sanben Technology CO.,LTD will prov... (read more)

Author: Ricardo Liu

24. 5 Signs That You Need An Air Purifier In Your Home
September 15, 2009

A home air purifier is a boon, especially if you have little kids living in your domicile. This is also true in case you have elderly and sick relatives with you; and if you are sharing spaces with your favorite pet(s.) Most people think that investing in a home air purifier is a waste of time and money. After all, most homes now have HVAC (heating-ventilation-air conditioning) systems installed. But having an HVAC is different from having a purifier. The ventilation and the air conditioning units can do no more than circulate the air, which means air that is infested with microscopic ... (read more)

Author: Team Oxynet

25. Green HVAC Guide
September 13, 2009

Ever since mankind began to industrialize, environmentalism has been a constant dilemma. From the coal-stained streets of London to the Great Pacific Garbage Patch, we have always traded the destruction of one existing circumstance for our personal comfort and survival. The question has always been the same: how can we have our cake and recycle it too? In the case of heating and cooling our homes, human beings have actually begun to be relatively successful. Of course, every HVAC system is dependent on existing power grids, but designers in the 21st century have been remarkably ingenious... (read more)

Author: Priyank Saxena

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