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Should buy regulate how, use, preservation of the stars are there optimal efficiency? Prof. Dr. Nguyen Duc Loi - Engineering Department faculty and Cold Air Conditioning, Heating and Refrigeration Institute - Hanoi University of Technology - will help you address these questions there.
Currently in our country, air conditioners (which is often referred to as air conditioning) are used quite a lot, so your market is also quite diverse, most are manufactured from Japan, Korea and China National a few of the U.S. and Russia (now rarely seen).
Through this article, we introduce a machine wall mounted air conditioners and windows (ie put in a hole like the window in the wall). They use this machine primarily to reduce the temperature in the office room or house.
In fact the air conditioning is also an air conditioner, the engine also includes blocks, compressors, heat rigs, coil and the capillary. Other machines in that cooler refrigerator to cool air, thanks to the centrifugal fan and convection through the air coil is cooled and then pushed into the room.
You want to buy an air-conditioned h but hesitated not know how to choose the appropriate type. Here are some guidelines need to be aware of before deciding to choose to buy any kind, or to see how the machine to be able to buy good machines, use long.
Air conditioning machines of two types:
A. Wall-mounted type has two separate parts made in two parts, coil unit is installed indoors by mounting on the wall. Fan and block parts are attached outside the house, the two parts of this information put together by a plastic tube through a small hole (just the tube cross section) on the wall This machine is suitable for housing, a corridor outside (used to block the fan and computer parts).
Two. Types of windows. This type machine is a homogeneous mass, which means that fans are always parts of the machine rather than as separate machines (1) above. This type is suitable for tall buildings. To add this machine just create a windows machine on the wall when mounted to the surface (cooler) back into the room.
In general, two types of machines are operating the same and shall buy any interests of consumers.
To buy a good air conditioning, pay attention to several points:
- Each air conditioner has a cooling capacity respectively, meaning that each unit only has the ability to regulate temperature for a suitable room.
- The ability to regulate temperature of the machine (cooling capacity) is determined by its cooling capacity, ie the chiller uluonghiet in a unit time.
- It has a cooling capacity value becomes larger, has more cooling capacity.
Power greater the cooling capacity is large (note the electric power only power consumption of the machine rather than cooling capacity). On machines usually indicate electrical power consumption. So when there is no exact value of the machine cooling capacity may be based on electrical power to conjecture. Usually the air conditioning temperature small refrigerating capacity about 75% of the power of a machine.
Machinery air conditioning to maintain room temperature in accordance with the requirements of that room so the device’s main purpose is to serve people, to maintain room temperature between 20 and 25 ° C (in summer). Corresponding to that temperature, combined with adequate moisture, people will feel most comfortable.
- Machines for air-conditioning maintenance machinery mainly temperature to ensure proper air mode for machinery or equipment, and the temperature is maintained is also subject to this requirement.
- To maintain the cold or cool in room air conditioners must be able to remove heat in the room. The heat comes in two types: heat generated in the room as the person by the bulb, so machines etc. .. and heat penetration from the outside, the outside temperature higher than room temperature.
a. The heat generated from the room: His body is always radiating heat around him. The amount of heat radiating more or less depending on the labor ucuong person’s labor intensity the higher the heat generating greater.
For example, in a room with 10 people working mechanics, of course, heat generating heat to more than double the 10 people who work office.
In addition to the heat emitted by the human body, machines also emit significant amounts of heat. For example, in the office of mechanics (welder, turner, mechanic, etc. .. cool) usually machinery layout corresponds to their work, or in the office work, the electric motors such as fans, lights, machines such as computers, printers, fax machines are also emitted a heat uluong respectively.
b. The heat from the outside in: A room fitted with air-conditioning machines, of course, room temperature is always lower than the outside temperature. So when there is a difference in temperature so there is heat transfer from outside into the room. Heat transfer in more or less depending on the temperature difference between the two environments eg outside temperature is 35oC, 15oC inside the room, the heat will pass to the outside more, whereas if the wall room or wall thickening good insulation on heat transfer shrinking. For example:
* Communication through a window. If the dealer turns toward the sun, the heat is transmitted through the larger door will not turn toward the sun.
* Communication through walls: If ttuong thicker insulation and the heat will pass through shrinking. Heat can also be transmitted through doors or floor.
Like whoa, when you want to calculate the amount of heat transmitted into the room, you must calculate the area of the door (out, windows), wall area of walls, floor area and should consider the direction, the thickness of the wall .. . and derived from the amount of heat can be transmitted into the room.
Finally the sum of all heat generating heat in the room from the outside and passed into the room. That is the basis for you to choose an appropriate air conditioning for your room.
Sources cited: muasamdientu.com