Description

A fan coil unit (FCU) is a type of HVAC (heating, ventilation, and air conditioning) system that is used to provide heating and cooling in buildings. It consists of a fan and a heat exchanger (coil) that uses either hot or cold water (or air) to transfer heat to or from the air passing through it. FCUs are typically installed in concealed spaces such as ceilings or above-door bulkheads, and are connected to a central heating or cooling plant via a network of pipes and ducts.

Types of Fan Coil Units

FCUs are available in various types to suit different needs and applications, including:

• Two-pipe: These units utilize a single pipe for hot water supply and another for cold water supply, making them suitable for systems where only heating or cooling is required at a time.
• Four-pipe: As the name suggests, four-pipe FCUs have two separate pipes for hot water supply and two for cold water supply. This allows for independent control of heating and cooling, making them ideal for applications where both are needed simultaneously.
• Concealed: Designed for discreet integration within the building’s structure, concealed FCUs are installed within walls or ceilings, providing a seamless aesthetic.
• Exposed: These units are installed openly in the space, making them suitable for areas where aesthetics are less critical or where installation within the structure is not feasible.

Applications of Fan Coil Units

FCUs offer a versatile solution for a wide range of applications, including:

• Office Buildings: FCUs are extensively used in large and small office buildings to provide efficient and controllable heating and cooling to individual offices or zones within the building.
• Commercial Centers: Shopping malls, restaurants, and sports facilities are all prime examples of commercial establishments that benefit from the flexibility and adaptability of fan coil units in meeting their specific HVAC requirements.
• Residential Buildings: Apartments, villas, and other residential complexes can utilize FCUs to provide customized comfort to individual units or common areas, ensuring a comfortable living environment.
• Industrial Buildings: Factories, warehouses, and other industrial facilities can employ FCUs to maintain optimal temperature and humidity levels within different areas of the building, contributing to productivity and efficiency.

Specific Applications of Ducted Fan Coils

• Air conditioning large spaces: Conference halls, assembly halls, and sports halls.
• Air conditioning spaces with limited space: Basements and attics.
• Air conditioning spaces with special requirements: Server rooms and clean rooms.

Advantages of Ducted Fan Coils

• Flexibility: Can be installed in various types of spaces.
• Precise control: Precise temperature control of the space.
• Energy efficiency: High efficiency compared to other systems.

Disadvantages of Ducted Fan Coils

• Cost: Can be more expensive than some other systems.
• Installation: Requires installation by a qualified technician.
• Maintenance: Requires regular maintenance.

Technical Specifications of Fan Coil Units

The technical specifications of a fan coil unit (FCU) include the following:

Airflow capacity: This indicates how much air the FCU can move per minute. The airflow capacity of the FCU should be proportional to the volume of the space it is intended for.

Cooling and heating capacity: This indicates how much heat or cold the FCU can produce per hour. The cooling and heating capacity of the FCU should be proportional to the climatic conditions of the region and the temperature requirements of the space it is intended for.

Coil type: FCUs have either hot water or chilled water coils. Hot water coils are used for heating and chilled water coils are used for cooling.

Fan type: FCUs have either axial or centrifugal fans. Axial fans are suitable for small spaces and centrifugal fans are suitable for large spaces.

Static pressure: This indicates how much pressure the FCU can withstand against the resistance of the ductwork. The static pressure of the FCU should be proportional to the length and complexity of the ductwork.

Installation type: FCUs can be installed either concealed or exposed. Concealed FCUs are installed in the ceiling or wall, and exposed FCUs are installed in the open space.

Additional features: In addition to these technical specifications, some additional features may also be available for some FCUs. These features may include:

• Thermostatic temperature control: This feature allows users to automatically control the temperature of the space.
• Fan speed control: This feature allows users to change the fan speed to adjust the airflow rate.
• Washable air filter: This feature allows users to easily wash the air filter to improve air quality.

When selecting an FCU, it is important to consider the required technical specifications and features.

How a Ducted Fan Coil Unit Works

A ducted fan coil unit (DFCU) is a type of heating and cooling system that uses a fan coil unit (FCU) to heat or cool air, which is then distributed throughout a space via a network of ducts.

Here’s how a DFCU works

1. Air intake: Air is drawn into the DFCU through a return air grille.

2. Filtration: The air passes through a filter, which removes dust, dirt, and other particles.

3. Heating or cooling: The air passes through a coil, which is heated or cooled by water or refrigerant.

4. Air distribution: The heated or cooled air is then distributed throughout the space via a network of ducts.

Cooling mode

In cooling mode, chilled water from a chiller or other HVAC system flows through the coil of the DFCU. The air is blown through the coil, transferring heat from the air to the chilled water. The chilled water absorbs the heat from the air and becomes warmer, while the air is cooled. The cooled air is then distributed throughout the space via the ductwork.

Heating mode

In heating mode, hot water from a boiler or other central heating system flows through the coil of the DFCU. The air is blown through the coil, transferring heat from the hot water to the air. The hot water releases heat to the air and becomes cooler, while the air is heated. The heated air is then distributed throughout the space via the ductwork.

Ordering a Duct Fan Coil from Satraptahvieh

To have an efficient and durable HVAC system, it is necessary to purchase quality products from a reputable manufacturer. Satraptahvieh is a suitable option for buying duct fan coils. Satrap Ventilation Group is one of the reputable manufacturers and suppliers of duct fan coils in Iran. This group, with the help of the knowledge and experience of its specialists, produces high-quality products at a reasonable price.