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VRF ventilation system

VRF ventilation system

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 …

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chilled beam application

chilled beam application

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 …

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Fixed Linear Bar Register Damper

fixed Linear Bar Register damper

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 …

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Components of VAV boxes

Components of VAV boxes

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, …

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sound attenuator geometry

sound attenuator geometry

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 …

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The importance of Air Ducts and Registers

The importance of Air Ducts and Registers

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 …

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wall type registers with one way adjustable blades function

wall type registers with one way adjustable blades function

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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