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posted by admin, October 21, 2011 How much does an air conditioning system cost? A wide variety of air conditioners presents designers and their customers with a dilemma. Which type of air conditioning will be the most efficient? How much will it cost to install it? Only after working out of design documentation a design engineer will be able to answer these questions. Cost-performance ratio and efficiency of the air conditioning system depend on characteristics of the air conditioned building. Key functional characteristics of the air conditioned room are excess heat, excess moisture and gas release. Depending on these and other factors, the designers decide in favor of split systems, central air or single-zone climate control systems. In turn, single-zone air conditioning systems are divided into air, water and Freon climate control systems. As for the energy efficiency ratio, Freon air conditioners have the highest ratio ranging from 2,7 to 3,2. The energy efficiency ratio of the air and water climate control systems are 1,7-2,2 and 1,9-2,8 respectively. Read More posted by admin, August 9, 2011 Air conditioning is a process of air handling aimed to regulate various characteristics of the air inside the building. Air conditioning changes humidity, temperature and purity of the air making it more favorable for health of people. Today natural ventilation cannot provide pure air flow, especially in metropolises. When we open the window to air our room we do not think how pure the air outside is. Heavy traffic on the streets and plants emitting chemicals into air have a bad effect on condition of the air. That is why air conditioning aimed to provide artificial ventilation has become so essential. Mechanical ventilation systems purify thoroughly the air delivered into the rooms. Air conditioning systems are a collection of hardware designed to distribute, move and regulate automatically characteristics of the air. In summer their main purpose is air conditioning while in winter they heat the air and humidify it. They also can remove dust and some bacteria from the air. Depending on individual cases, air conditioning systems deodorize, ionize air, remove excess carbon dioxide and oxygenate air. They also divided into household and industrial air conditioning systems. For air conditioning of the 15-80 m2 areas it is recommended to use household conditioners with 7 kW capacity. Capacity of industrial conditioners is more than 25 kW. Read More posted by admin, July 3, 2011 Air conditioning is aimed not only to create a comfortable atmosphere indoors, but prevent development of respiratory diseases. No matter air conditioning is designed for industrial or residential use, it must meet specific standards. For example, if the temperature outdoors is below 10 ° C recommended temperature in accommodation facilities is 19-21 ° C. When outdoor temperature is above 10 ° C, the temperature inside should be 22-25 ° C. As for the industrial facilities, it ranges from 14 to 21 ° C in cold months and from 17 to 25 ° C in warm months. Recommended air humidity for any type of premises is 40-60 %. Because of industrial development and ecological problems, air becomes increasingly poor. In some areas it is very harmful for health of people living there. Air conditioning makes possible to breathe purified air and reduce the risk of diseases associated with poor air. As it removes dust, carbon dioxide and most pathogens from the air, it reduces risk of asthma and allergy. According to standards, the air indoors should contain 0.4% of carbon dioxide and 20% of oxygen at 50% air humidity. Thought, the main purpose of the air conditioning is to create comfortable micro-climate, maintain necessary temperature and ventilate the rooms. Different climate control systems are used for air conditioning of accommodation and industrial facilities. Some of them only remove dust and keep necessary temperature. The others can cool and heat the air, remove dust and bacteria, control level of carbon dioxide in the air, control temperature and air humidity, etc. Read More posted by admin, May 26, 2011 Let us start from the fact that air conditioning is of vital importance today. Air conditioning helps us to control purity and temperature of air in our homes, cars, offices, etc. Apart from multizone systems, industrial and semi-industrial air conditioners, household and automobile air conditioners enjoy wide popularity. Talking about air conditioning of our homes, it should be said the most widespread models of air conditioners are those ones with a wall-mounted split-system. Though, floor-mounted and window units are also very popular. Multizone systems and semi-industrial air conditioners are mostly used in big offices, restaurants, etc. In turn, they are divided into cassette, ceiling-mounted, wall-mounted, stanchion and duct conditioners. Let us consider the most common types of air conditioning in details. Central ducted air conditioners consist of two units. The noisy unit is installed outside and this fact makes such air conditioners very attractive for those buyers who want to install A/C in their apartments and homes. Split central air makes possible to cool all rooms having ducting. The ductless A/C is used to cool an area surrounding it. Like in case of the split system central A/C, the noisy unit of this A/C is installed outside. Single-package central A/C is used for air conditioning of factory units. As a rule, it is installed on the roof. And at last, there are also portable air conditioners and evaporative coolers. The portable A/C is rather noisy, but it has a reasonable price. Read More posted by admin, May 25, 2011 It is not enough to buy an air conditioner produced by a well-known company to have air conditioning of top quality. We buy such air-conditioner and think we will not have any problems with air conditioning for years. And this is our mistake, because no matter what A/C we bought, it needs proper maintenance to work well for a long period of time. Let us start from refrigerating gas used to absorb heat. As a rule, it is Freon R-22, R-407Ñ or R-410À. In case of depressurization its quality changes, as well as quality of air conditioning. That is why it is very important to prevent depressurization. Of course, cooling liquid should be refilled. In case of R-407Ñ it is necessary to remove old cooling liquid completely and only after it new cooling liquid may be filled. Then if we want air conditioning to be noiseless, we should not forget about compressors, fans and cooling coils. By the way, in case of household A/C units, average levels of noise are 25-37 dB (the unit used inside) and 38-55 dB (the unit used outside). Absorbent used under the air vents should be checked to make sure water does not come out of the vents. It is also necessary to clean cooling oils at least one time a year. They are cleaned with help of a special cleaner sprayed on them and then rinsed with water. Read More |
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