HVAC – General Training Air Conditioning (1-2)

HVAC – General Training Air Conditioning (1-2)HVAC | English | ISBN:0485593492 | File type: PDF | 1.05 GB
HVAC (pronounced either quot;H-V-A-Cquot; or, occasionally, quot;aitch-vakquot;) is an initialism/acronym that stands for quot;heating, ventilating, and air conditioningquot;. HVAC is sometimes referred to as climate control and is particularly important in the design of medium to large industrial and office buildings such as sky scrapers and in marine environments such as aquariums, where humidity and temperature must all be closely regulated whilst maintaining safe and healthy conditions within. In certain regions (e.g., UK) the term quot;Building Servicesquot; is also used, but may also include plumbing and electrical systems. Refrigeration is sometimes added to the field’s abbreviation as HVACR or HVACR, or ventilating is dropped as HACR (such as the designation of HACR-rated circuit breakers).
Heating, ventilating, and air conditioning is based on the basic principles of thermodynamics, fluid mechanics, and heat transfer, and to inventions and discoveries made by Michael Faraday, Willis Carrier, Reuben Trane, James Joule, William Rankine, Sadi Carnot, and many others. The invention of the components of HVAC systems goes 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 functions of heating, ventilating, and air-conditioning are closely interrelated. All seek to provide thermal comfort, acceptable indoor air quality, and 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 quot;sizequot; and select HVAC systems and equipment. For larger buildings where required by law, quot;building servicesquot; 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. In all buildings, building permits for, and code-compliance inspections of the installations are the norm.
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 industries such as ASHRAE, SMACNA, ACCA, and AMCA, have been established to support the industry and encourage high standards and achievement.
The International Association of Plumbing and Mechanical Officials (IAPMO) published its first version of the Uniform Mechanical Code (UMC) in 1967. The UMC provides complete requirements for the installation and maintenance of heating, ventilating, cooling and refrigeration systems, while at the same time allowing latitude for innovation and new technologies. The 2006 UMC is supported by the Mechanical Contractors Association of America (MCAA) and Plumbing-Heating-Cooling Contractors National Association (PHCC-NA).
Most recently, the ICC has been established to create international standards that many countries, including the US, Canada, the UK, Australia and many others have been adopting.

General Training Air Conditioning (GTAC – I)
modules 1 – 10
Introduction to air conditioning.
Temperature and pressure.
Refrigeration cycle.
Metering devices.
General Training Air Conditioning (GTAC – II) modules 1 – 9
Refrigerant Characteristics
Refrigerant oils
Refrigerant piping
Charging, recovery, recycling and reclamation
Heat pump
Part load

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