Articles
Variable Refrigerant Flow (VRF) is a type of air conditioning technology that was invented in 1982 in Daikin, Japan. A VRF system, like splits, uses refrigerant for cooling and heating. This refrigerant is circulated in a circuit by an external unit between several internal units. VRF systems are an advanced generation of ductless multisplit systems …
The use of strong induction property in the example of active chilled beams has caused the complete elimination of the fan compared to the fan coils, which causes the complete elimination of sound. About 20% of the incoming air in these systems is provided by the air conditioner, which has already been silenced, and the …
Fixed Linear Bar Register damper is used to adjust the air flow rate or, if necessary, to completely cut off the air flow. The blades of this type of dampers are made in two parallel types, 7 and 8. The levers used to adjust the parallel blades can be made in three types: sliding, switch …
VAV boxes The role and importance of VAV BOX in air conditioning systems: Ventilation includes a significant part of building costs. The research conducted in developed countries shows that about 60 to 70 percent of the energy consumption of buildings is spent on ventilation and air exchange of the building with the outside environment. Therefore, …
The structure of sound attenuator consists of one millimeter-thick perforated sheets, where porous materials are placed between the two sheets depending on the place of use. Sound absorbers that are used in most cases today are in the form of vertical blades with specific length and width. Blades placed next to each other with equal …
In short, an air curtain is a very high speed air jet that creates a protective air layer. This air layer minimizes…
Channel heater is a device that is used to heat the air inside the duct to enter office, commercial and residential environments. When the conditioned air is produced in the air conditioner and exits from the coil due to the long path of the channel, the heat exchange causes the temperature of the hot air …
What Are Air Ducts and Registers? Air ducts are the intricate system of tubes and related parts that distributes the airflow of your air conditioner (and HVAC system at large) throughout your home or commercial building. Registers at the end of each air duct direct the airflow within a room or space. Supply air registers …
Shahrokhi wall type registers with one-way adjustable blades have multi parallel blades which can be fixed or moved around the auxial pins. These registers used for supply, return or exhaust air. Horizontal or vertical blades may be arranged for any deflect setting position. the air flow pattern for different blades setting. It is noted that …
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In the air conditioning system, a mistake in placing the air registers and not choosing the most suitable place to install the registers can cause many problems. problems such as energy loss, increasing energy costs, limiting the capacity of the ventilation system and many other things. In this article, we are going to examine the …
