History of Hvac

The Heating, Ventilating, and Air Conditioning System[pic][pic]Westinghouse [pic] Ultra Efficient Comfort System A/C,Ductless Split System,BtuH 9700,115v
with IQ Drive[pic] [pic]ASX18? Air Conditioner Super Efficiency with the Trane XL15i| |
|HVAC, or ???Heating, Ventilating and Air Conditioning??? is most often pronounced either ???H-V-A-C??? or sometimes ???H-vack???. ???Climate Control??? is |
|another term used to describe HVAC and is a vital component in the inner-workings of larger commercial buildings, such as office buildings |
|or industrial sites. This could include skyscrapers as well as aquatic buildings such as aquariums or nautical zoos, in which places the |
|temperature and humidity inside needs to be closely monitored and at the same time, to maintain and healthy and safe environment. Heating, |
|ventilating and air conditioning (HVAC) is rooted in the standards of heat transfer, thermodynamics and fluid mechanics. |
|Many important and critical discoveries and inventions were made by people such as Michael Faraday, Reuben Trane, William Rankine, Willis |
|Carrier, James Joule and Sadi Carnot amongst others. These inventions and discoveries of the elements that make up HVAC methods were |
|intricately linked to the revolution of industrial advancements, especially in the last century. HVAC systems are constantly evolving as |
|new methods are discovered, creating higher levels of efficiency. |
|As suggested by its name, there are three main tasks to be accomplished by the HVAC ??“ heating, ventilation and air conditioning. The three |
|are interconnected and are all seeking to supply comfort of temperature and quality of indoor air while maintaining a comfortable living or|
|working environment in your home or business. These systems grant proper ventilation to the areas it services, as well as maintaining |
|comfortable standards of air pressure between spaces. The process by which air is removed from certain areas and delivered to others is |
|called room air distribution. This is, of course, the most important job of the HVAC system. |
|Selecting and installing the correct size of HVAC system is of the utmost importance. It is imperative that a calculation of load |
|circulation is performed prior to the selection and installation of an HVAC unit. This will enable you to properly choose the device which |
|will meet all your heating and cooling needs. Once the calculation is made, the proper size of HVAC can be installed, thus ensuring maximum|
|comfort, the lowest possible operating cost as well as proper humidity control. |
|In buildings which are new or relatively new ??“ within the past 10 years ??“ the control systems, installation and design of these functions |
|are all incorporated into at least one and sometimes more than one HVAC system. In smaller buildings, the size should be determined before |
|selecting the HVAC system or equipment. In larger buildings, there are certain laws and safety standards which must be kept in compliance. |
|In all size buildings, it is common to have to obtain building permits and inspections of code-compliance of the installations. |
|The effectiveness of the HVAC system has an enormous influence on numerous issues in your home or building. You will experience the |
|consequences of an HVAC system that is not functioning properly in some of the following ways: |
|Possibility of the formation of mold in your home or building. |
|Increased energy bills |
|If left untreated for too long, the result could the leakage of Carbon Monoxide |
|Uncomfortable setting in which to live or do business |
|For your air conditioner to perform well, you need to make sure that the air filters therein are clean and match the unit. Clean air |
|filters facilitate cleaner environment. They protect you from the allergies caused by dust. The sole purpose to own air conditioning |
|filters is to keep each part of air conditioner free from dirt. |
|Air filter has reduced heating and cooling level. And, it often leads to breakdown in the compressor. It increases the consumption level of|
|blower power. Those equipments having dirty filter last for a shorter duration. |
|It is necessary to clean air filters regularly. If it is for office purpose, you need to clean them once in 14 days. Likewise, while using |
|at home, clean them once in 60 days. It is not good to allow the air filters accumulate dust first and then clean them. When dust gathers |
|around the fiberglass, it is clearly an indication that the air filters need either cleaning or replacement. |
|Air Conditioner Types: |
|1. Furnace filter: Air cleaner furnace filter is cost-efficient. It removes cat dander, fungi and other pollutants related to pets. |
|2. Allergen filter: Allergen filter from 3m is 93 percent effective. It captures air-borne particles that pass through air filters. |
|Allergen filter even removes minute particles such as household dust, smoke, bacteria and pet dander. It even removes particles, which |
|carry odors of tobacco smoke and bacteria. |
|Key features of allergen filter are as below: |
|It is a high performance air filter. It captures allergens such as mold spores, dust and pollen. It attracts the microscopic allergens such|
|as smog, carriers of virus, smoke and bacteria. Its airflow is better by about 15 percent. It is free from antimicrobial chemicals. It |
|meets all quality guidelines that are laid for indoor air services. Allergen filter may last for more than three months depending on its |
|condition. This type of air filter is most suitable for residential use. It is an electrostatic air filter, which effectively attracts both|
|the tiny and large air-borne particles. |
|3. Humidifier filter: You may have this type of air filter installed in a bedroom of average size. It has the High Efficiency Particulate |
|Air (HEPA) filter. You need to vacuum this air filter twice each year. This filter promotes health by purifying the air against harmful |
|impurities. It is even affordable. For people, who are prone to allergy and asthma, having this type of air filter is better deal. |
|4. Electrostatic air filter: As you breathe, you are at risk of inhaling many irritants and allergens such as smoke, bacteria and dust. |
|These particles are not visible, as they are tiny and measured in microns. An electrostatic air filter works by capturing the dust |
|particles. They remain there until you wash the filter. Such an air filter saves you many dollars, as you need not purchase disposable |
|filters. This air filter is efficient by 90 percent. You may have this air filter installed in both offices and residence. |
|This air filter works better as far as it remains clean, allowing air easily to pass through it. To find out how better the filter is |
|working, wash it in a tub and allow the water to hold. Place this water into any glass to see the particles that this filter had trapped. |
|You may easily see the dust particles floating on the surface. |
|5. Aprilaire furnace filter: This filter facilitates clean air all through your home. You get it at an affordable price. It traps or |
|attracts 98 percent air-borne dust that is visible including large particles. It captures pollen permanently and shows efficiency of about |
|97 percent. You need to replace the filter once in every two years, since its installation. |
|Air handlers give off the necessary energy to transfer air throughout the ductwork of your house or building. The air conditioning unit |
|consists of two major components, the outdoor unit and the indoor unit. The indoor unit is the air handler. Without this appliance, your |
|air conditioning system would only serve to cool your ductwork and not actually your air. The air handler is usually used in place of a gas|
|furnace and is just as cost-efficient. The air handler is responsible for circulating the cool air in the summer and the heated air in the |
|winter. It works together with the outdoor unit, or the condensing unit. The two cannot function independently of one another. |
|Air handlers function in connection with an air conditioning system or heat pump system. Although they look simple to the untrained eye, |
|they are actually the main components of the air conditioning system, as this is where the main motor is housed. |
|Normally, air handlers have a filtration system which is made up of air conditioning filters that work to protect your air conditioning |
|system and refrigeration system, as well as your home, from unhealthy or unwanted dirt or debris. In residential air conditioning systems, |
|air handlers are generally controlled by a thermostat, which can be manual, digital or modern programmable varieties. |
|In keeping with good ethical and environmental practices, energy-efficient air handlers are available. Some power companies even offer |
|incentives if you install an environmentally-friendly and energy-conserving system in your home or business. In these types of systems, a |
|variable speed motor (VSM) will automatically make a power adjustment in accordance to the setting on your thermostat. This will conserve |
|energy and even save you money on your monthly energy bill. |
|As with all components of your air conditioning system or central air system, it is imperative that air handlers be well-maintained. If |
|your indoor unit, or air handler, is installed in an inaccessible or inconvenient location of your home, it is more likely that the |
|maintenance is not occurring as often as it should. For this reason, it is suggested to have your air conditioning unit installed in a |
|location in your home with easy access for maintenance and functionality. Air handlers operate at their best when they are regularly |
|serviced. It is important to pay close attention to the filters and ducts of your air conditioning system. It is advisable to change your |
|system??™s filters every 30 to 60 days and to have the ductwork in your home or building inspected on a yearly basis. |
|Your indoor unit, or air handler, will provide you with pleasant cool air in summer and cozy warm air in winter as long as you maintain and|
|look after the unit. It is a long-term relationship you can really cozy up to! |
|The compressor is the central functioning unit of any cooling system and the same is true of the HVAC compressor. In general, a compressor |
|is a mechanism that, as its name suggests, compresses gas by diminishing its volume. This is the primary basis of any heating, ventilation |
|and air conditioning system (HVAC). |
|When a gas is compressed in the HVAC unit, the temperature of the gas naturally increases. In effort to represent the process of gas |
|compression, there are two abstract comparisons between pressure and temperature in a given volume of a compressing gas. It is important to|
|recognize that this is only an example and does not exactly match the real world, but can be useful for comparison and examination: |
|Isothermal: This illustration presumes that the gas which is compressed stays at a consistent temperature throughout the process of |
|compression or expansion. During this cycle, internal power is taken out of the system and heat at the same speed is added during the |
|compression work of the mechanism. When a large surface for exchanging heat is present, then the Isothermal example more closely resembles |
|real life compression. This is also true when there is small gas volume or a long time frame. Perfect isothermal compression is |
|accomplished in compressors that use inter-stage cooling in between the different stages of compression. |
|Adiabatic: This illustration presumes that no heat, or energy, is transported from the gas while it is undergoing the compression process. |
|It also assumes that all the work supplied is increased to the internal energy of the compressed gas which results in an increase of |
|pressure and temperature. This rise in temperature and air means that compression does not follow a common ratio of pressure to volume. |
|This tends to be less efficient but is much more quickly accomplished. When there is good insulation, a short time frame and larger gas |
|volume, then adiabatic compression more tightly resembles real life compression. |
|Polytrophic: This illustration considers both loss of energy, or heat, as well as a rise in temperature. This presumes that heat is able to|
|leave or enter the compression system and that the input work in the shaft will appear as both increased pressure (which results in useful |
|running) and increased temperature, which would be above adiabatic (which results in losses because of the efficiency of the cycle is |
|lacking). In this case, the efficiency of compression is the ratio of actual (polytrophic) versus temperature rising at a hypothetical one |
|hundred percent (adiabatic). |
|The desired result of the HVAC system is a change in temperature and the compression of gas is a means to that end, as it works together |
|with the entire heating, ventilation and air conditioning system. The functionality of your HVAC compressor directly relates to the overall|
|working of your HVAC system. It is imperative to properly maintain and service the entire HVAC unit as recommended by your dealer or |
|service provider. With the proper maintenance of your unit, you will experience comfortable environmental conditions inside your home or |
|building for many years to come. These are just a few things that are important to the HVAC system. |
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