Air conditioning

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Main titles of building’s air conditioning equipment and systems

In this article, we try to present a general definition of the air conditioning equipment and systems of buildings, different classifications, advantages and disadvantages of each of them, a brief explanation of the equipment, and the calculation of their required capacities. You can also check out their supplementary information by clicking on any of the equipment described below.

Definition of Air Conditioning

Generally, air conditioning is a branch of mechanical engineering whose function is providing pleasant air in terms of control of temperature (cooling), humidity (humidifiers and dehumidifiers), reduction of pollution (air purifier), etc. for human comfort.

Nowadays, with the increasing global warming, issues such as choosing air conditioning systems, upgrading air conditioning systems, and increasing the quality and efficiency of these equipment have gained twofold significance.

By conducting accurate engineering examinations, control and calculations, a more suitable air conditioning system can be used to optimize energy consumption, save on the cost of purchasing, promote service and maintenance of equipment, and so forth.

 

Types of air conditioning system

Air conditioning systems are generally divided into two categories:

Residential, industrial and semi-industrial air conditioning systems

1) Independent air conditioning systems (Mini chiller, Ducted split, Split Ac Unit, Evaporative cooler)

2) Central air conditioning systems (such as a variety of Compression and Absorption chillers, VRF)

 

The advantages and disadvantages of independent and central systems:

Independent air conditioning systems

One of the advantages of using independent air conditioning systems such as mini chiller, Split Ac Unit or split and ducted splits is the independence of each unit in terms of installation and operation, and the possibility of immediate use of its cooling and heating system. Further, people can ...

Main titles of building’s air conditioning equipment and systems

In this article, we try to present a general definition of the air conditioning equipment and systems of buildings, different classifications, advantages and disadvantages of each of them, a brief explanation of the equipment, and the calculation of their required capacities. You can also check out their supplementary information by clicking on any of the equipment described below.

Definition of Air Conditioning

Generally, air conditioning is a branch of mechanical engineering whose function is providing pleasant air in terms of control of temperature (cooling), humidity (humidifiers and dehumidifiers), reduction of pollution (air purifier), etc. for human comfort.

Nowadays, with the increasing global warming, issues such as choosing air conditioning systems, upgrading air conditioning systems, and increasing the quality and efficiency of these equipment have gained twofold significance.

By conducting accurate engineering examinations, control and calculations, a more suitable air conditioning system can be used to optimize energy consumption, save on the cost of purchasing, promote service and maintenance of equipment, and so forth.

 

Types of air conditioning system

Air conditioning systems are generally divided into two categories:

Residential, industrial and semi-industrial air conditioning systems

1) Independent air conditioning systems (Mini chiller, Ducted split, Split Ac Unit, Evaporative cooler)

2) Central air conditioning systems (such as a variety of Compression and Absorption chillers, VRF)

 

The advantages and disadvantages of independent and central systems:

Independent air conditioning systems

One of the advantages of using independent air conditioning systems such as mini chiller, Split Ac Unit or split and ducted splits is the independence of each unit in terms of installation and operation, and the possibility of immediate use of its cooling and heating system. Further, people can enjoy the system’s heating in a unit or a single point of a unit independently. The need for such a system will occur especially late in each season when the heating system has not started operation yet; moreover, there are always some individuals in the group who need a different temperature to feel comfortable.  

Advantages

  • Independence in electricity consumption costs of each unit
  • Independence in system maintenance costs of each unit
  • Removal of overall piping network from central powerhouse to consumption points in buildings

Disadvantages

  • Normally, the lifetime of independent air conditioning systems (especially split AC units and splits) is not as long as central air conditioning systems.
  • If the building has more than four floors, the condensers must be installed in the terraces which occupies a significant part of the terrace area causing disturbing hot air and noise in the terrace and for the residents of the apartment.
  • Likewise, in this case, a number of units of each building install their condenser on the building’s façade, which degrades the exterior view of the building.

The central air conditioning system

Central air conditioning systems include all types of water-cooled chillers, air-cooled chillers, absorption chillers, etc. Choosing such systems also entails the choice, purchase and installation of other equipment such as cooling tower, fan coil and air handling unit.

Advantages

  • The first key advantages of the new central air conditioning systems (CACS) are efficiency promotion, significant reduction in electricity consumption, and thermal comfort enhancement.
  • The application of a CACS can reduce the project’s demand charges, as well as the capacity of electric substations, boards, cabling, electricity meters, etc. Undoubtedly, lower initial investment in this area interests the investors and is a suitable measure in favor of economic policies of the project.
  • The mean lifespan of CACSs is more than 30 years, turning it into a more economical option than independent air conditioning units.
  • Among other advantages of CACSs is that they do not take up valuable floor space (e.g. balcony), which has a vital role in optimal use of space and appearance of residential units.

Disadvantages

  • Among disadvantages of CACS are high initial costs for equipment, high cost for piping and insulation of transmission and distribution system, high maintenance cost, and an inadequate number of repair and maintenance technicians.

 

Examining the residential or independent air conditioning equipment

Following the aforementioned brief explanations on various types of central and independent air conditioning systems, we will continue to examine the performance of some of the most widely used air conditioning equipment:

 air conditioning


Split Ac Unit:

Today, Split AC Units or splits are one of the most popular and most commonly used independent and residential air-conditioning equipment which are used for cooling (and sometimes heating) in various residential, office and … environments.

By installing a Split AC Unit in each part of an apartment (living room, bedroom, etc.), more freedom is provided for people to set the temperature completely independent from the temperature of other parts of the home or office. Split AC Unit are available in wall-mounted, standing, portable and cassette types. The capacity of wall-mounted models ranges from 9000 to 30000, standing models have capacities of 30000 to 90000, and the portable models have capacities of 7000 to 14000.

 

In the Split AC Unit and Splits Group of DamaTajhiz Shopping Website, you can examine and purchase all types of split AC units and splits with the best brands including LG Split AC Unit and Split, Trust Split AC Unit, Gree Split AC Unit, Hisense Split AC Unit and Samsung Split AC Unit with guaranteed prices.

Ducted Split:

Ducted split or channel split is in fact a larger condenser with a capacity many times greater than condensers of Split AC Units that simultaneously create cooling and heating power in units. Ducted splits generally replace multiple Split AC Units and splits and are cost-effective requiring only channeling from the installation place in each unit to different points of the same unit (above the false ceiling).

You can find out about how to calculate the ducted split capacity in the Ducted Split Group of DamaTajhiz Website and check out and purchase various brands such as LG Ducted Split and Media Ducted Split.

Central Split Systems (VRF):

In general, a central split system characterized by acronyms such as VRV, MULTIV, VRF or GHP has an external condenser (usually installed on the building's roof) and a number of internal split panels with the option of choosing the type of split panel and the possibility of adjusting the desirable temperature in any place of the building.

The central split system or VRF is commonly used in large buildings, hotels, and commercial centers. The power supply of these devices can be three-phase electricity or natural gas depending on their type or brand.

Click here for more information on the VRF Central Split System and checking out the active brands in this field

Fan Coil Unit:

Fan coils are devices that are used in air conditioning systems of chillers. Fan coils are available in ceiling fan coils (with cabins and without cabins), floor-standing fan coils (with cabins and without cabins), cassette fan coils (one-way, double-way and four-way) and wall-mounted fan coils.

In the Fan Coil Group of DamaTajhiz, you can find out about the calculation of fan coil capacity and check out and purchase various well-known brands such as Saran fan coil, Saravel, Tahvieh, Nik, Media, Aux fan coils, etc.

Cooling Tower:

Cooling towers are generally responsible for cooling the water that is needed to be circulated in the condensers of water-cooled chillers. Cooling towers can be divided into two open circuit and closed circuit types in terms of performance and into circular cooling towers and cubic cooling towers in terms of their appearance. Their body material can also be made of fiberglass or galvanized sheet.

In the Cooling Tower Group of DamaTajhiz, you can find out about the calculation of cooling tower capacity and check out and purchase various well-known brands such as DamaTajhiz, Parto Abgardan, Azar Nasim, Sarayel, Saran, Tahvieh, Saravel, Aria Beniz, Sabalan Tahvie cooling towers.

Cooled Chiller:

In central air conditioning systems, chillers are regarded as the heart of air conditioning system. The chillers are categorized into two general types of compression chillers and absorption chillers in terms of type of operation.

Water Cooled Chillers:

The main advantage of water-cooled chillers over air-cooled chillers is their greater Coefficient of Performance (COP) and their lower cost. Despite their many advantages, water-cooled chillers can be restricted in some projects due to the need to purchase, install and maintain a cooling tower. Click here for more information on the water-cooled chiller system.

Air-Cooled Chillers:

The main advantage of air-cooled chiller over water-cooled chiller is that it can be used in any humid weather conditions, can be installed on roofs, balconies or any other space outside the powerhouse; above and beyond, it does not consume water and does not require cooling towers to cool the condenser. Click here for more information on air cooled chiller systems

Mini-Cooled Chiller:

Mini chillers or apartment chillers are basically small, low-noise air chillers with a capacity of less than 20 tons of refrigeration. They are used for apartments, villas and buildings that want to have an independent cooling and even heating system but do not want to cope with problems of the central powerhouse.

Some of the advantage of using mini chillers are: capability of being used in two seasons (in models with a heating pump), affordable prices, economical for larger units, full independence of electricity costs, and freedom in determining the temperature of the unit and so on.

In Mini Cooled Chillers Group of DamaTajhiz Shopping Website, you can check out and purchase all types of mini chillers with different well-known brands such as Media, Aren, Aux, etc.

Absorption Chiller:

Absorption chillers are one of the refrigeration equipment in central air conditioning systems that have a much lower electricity consumption than compression chillers, but require a lot of thermal energy (such as warm water - hot water - steam - direct flame).

Generally, regarding air-conditioning systems based on absorption chillers, the employers face challenges such as higher initial costs compared to compression chillers, occupying more space than compression systems, high maintenance costs, lower efficiency, etc. Click here for more information on absorption chiller systems.

Air handling unit:

Air handling unit, which is briefly displayed as AHU in project’s equipment specification tables, is one of the most important equipment that is used to provide pleasant and healthy air with the capability of controlling temperature and humidity both in the cold and warm seasons. The AHU is one of the main devices of air conditioning systems, which can be installed and utilized in all climates of World.

AHU is very suitable for air conditioning in large centers, halls of meeting, shows and lectures, hospitals, offices, etc.

In AHU Group of DamaTajhiz Shopping Website, you can get familiarized with important parameters in selecting the AHU capacity and check out and purchase all types of AHU with different well-known brands such as DamaTajhiz, Azar Nasim, Sarayel, Tahvieh, etc.

Air Washer:

Air Washer is a device used to cool air by spraying water powder on the air passing through the device. Air Washers can be used as an independent unit or as a part of AHU or other air conditioning systems.

Air Washers are of industrial and apartment types and are available in horizontal or vertical, and front-blowing and top-blowing models, some air washers have a heating coil.

In Air Washer Group of DamaTajhiz Shopping Website, you can get familiarized with important parameters in selecting the Air Washer capacity and check out and purchase all types of Air Washer with different well-known brands such as Azar Nasim, Yekta Tohid Arvand, Datis Kar, Omran Tahvieh, Mehkooh Tahvieh, etc.

Zent:

Zent is a two-purpose device in addition to providing cooling and heating, regulates the humidity of the air. Zent accounts for semi-summer semi-winter season with a completely Iranian idea and design.

The cooling unit of Zent functions like evaporative coolers; that is, in addition to having straw and a water pump for cooling the air in the summer, it also has a hot water coil for hot weather in the winter.

In Zent Group of DamaTajhiz Shopping Website, you can get familiarized with all types of Zent and check out and purchase all types of Zents with different well-known brands such as Azar Nasim, Yekta Tahvieh Arvand, Datis Kar, Omran Tahvieh, Mehkooh Tahvieh, etc.

Evaporative cooler:

Usually evaporative coolers are recommended in hot and dry cities. Evaporative cooler are used for dry and mild areas. The main reasons for using evaporative cooler are: affordable price, lower electricity consumption, easy installation, minor costs of operation and possible repairs.

In Evaporative Cooler Group of DamaTajhiz Shopping Website, you can check out and purchase all types of evaporative coolers such as cellulose evaporative cooler, ordinary evaporative coolers, portable evaporative coolers with different well-known brands such as energy, Absal, Barfab, Sepehr Electric, Kaveh Kavir , etc.

Rooftop Package:

Generally, rooftop packages are used to create heating and cooling, and are commonly used in commercial and industrial projects, gathering halls, sports halls, and more.

Rooftop Package actually consists of an air-cooled chiller and an air handling unit having a DX cooling coil and the refrigerant gas directly flows in it.

Rooftop package is installed as an independent unit on the roof of the building and can be used in high-volume places and large areas that require equal temperature. In the Rooftop Package Group of DamaTajhiz Shopping Website, you can check out and purchase Rooftop Packages produced by Ehsan Afrooz Company.

Axial and Centrifugal Fan:

Generally, centrifugal and axial fans are used for air evacuation, air circulation, and air conditioning in residential complex parking lots, workshops, industrial kitchens, poultry houses, industrial greenhouses, kitchens and toilets of residential buildings. In Axial and Centrifugal Fan Group of DamaTajhiz Shopping Website, you can check out and purchase all types of Axial and Centrifugal Fan with different well-known brands such as Ziehl Abegg, DamaTajhiz, and Mackesh & Dahesh.

Air Channel and Hatch:

In general, air channel is used to direct the air of a variety of air conditioning devices such as air handling unit, air washers, Zents, channel fan coils, channel splits, evaporative coolers and centrifugal fans. Usually metal and galvanized sheets are used for making air channels; issues such as dimensions, usage and installation and operation conditions shall be greatly observed so that the channels strength is ensured. The air hatches are installed at the end of each air channel and are highly diverse in terms of appearance and use. In the Air Channel and Hatch Group of DamaTajhiz Shopping Website, you can check out and purchase air hatches with Shahrokhi Brand that is most well-known in this field.

Air purifiers

In addition to absorbing and disposing of suspended particles and air pollution such as bacteria, fungi, viruses and pollen, the home air purifier is effective in removing unpleasant smells and the smell of cigarettes in closed environments and provides healthy and pleasant air for the users.

Today, considering different types of pollution in big cities, the use of air purification systems in all homes and offices is one of the most essential requirements of urban living; in addition, we strongly recommend that the use of air purification devices be accompanied by installation and use of double-glazed windows and UPVCs that prevent the entry of soot and suspending particles in the air of polluted cities into the houses.

You can learn about the benefits of having an air purifier at home and in the living environment while studying useful materials on the performance of a variety of air purifiers. You can also check out and purchase different types of air purification systems with varied technologies, well-known brands and appropriate for any financial level.

Kitchen Fume Hood and Ventilator:

The kitchen hood and ventilator is one of the smallest components in the air conditioning equipment, but it is essential to install this equipment in the kitchen because it is responsible for absorbing the smells, smoke, and heat generated during cooking. In other words, the kitchen fume hood absorbs the smells of food, smoke, moisture and fats in the air and takes them out of the house which accordingly improves air quality and maintains a constant level of humidity inside the house.

If the fume hood or ventilator is not installed in the kitchen, the rising humidity and fat in the air provide the conditions for the growth of microbes, fungi and molds, and endangers the health of family members. As we stated in the definition of air conditioning, one of the tasks and uses of air conditioning systems is to eliminate pollution and control humidity in the air, so equipment such as fume hood and kitchen ventilator are regarded as air conditioning equipment.

In Kitchen Fume Hood and Ventilator Group of DamaTajhiz Shopping Website, you can get familiarized with the calculation of Kitchen Fume Hood and Ventilator capacity and check out and purchase different models (fireplace hood, glass hood, island hood) with different well-known brands such as Akhavan, Bimax, etc.

 

Getting advice | contact us

If you need to consult and negotiate on the selection of air conditioning equipment in terms of the appropriate capacity and the number of equipment or the selection of the most suitable brand (depending on the geographical, financial and operational conditions of the project), you can contact the experts and engineers of DamaTajhiz Company through telephone, email or Fax.

At DamaTajhiz reference and shopping website, all types of air conditioning systems with reputable and affordable brands in Iran's HVAC facility market are presented. The products are guaranteed to be sold at the best prices.Information on calculation methods, executive recommendations, and installation of each product is also included.

 

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Short Introdution

Since 2003, DamaTajhiz Online Store has been active in the supply of all types of heating, ventilation, and air conditioning (HVAC) equipment by management of Mr. Majid Zavvarian to meet needs of construction projects and consumers in the Middle East.

Investigating new methods of e-commerce and looking ahead to the future, DamaTajhiz Online Store designed its way of success as the first startup for selling installation equipment in Iran and the Middle East in 2004 by launching the most comprehensive specialized shopping website for all types of heating, ventilation, and air conditioning (HVAC), pool, sauna, and spa bath equipment.


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