A Fan Coil Unit (FCU) system compiles different HVAC mechanisms pertaining to temperature manipulation and airflow management in different environments. It has several significant components that complement proper heating in addition to cooling.
Indoor Coil (Water Coil or Heat Exchanger): The water coil or heat exchanger is a critical component of an AC fan coil. It performs the mission-critical role of transferring heat between the refrigerant and air to manage the interior temperature inside the room.
Fan (Centrifugal or Axial): The fan, which falls into two basic types of fans-centrifugal or axial, is one of the essential components in the fan coil AC unit. It is used to circulate the conditioned air throughout the area in which it is designed to be fixed. Centrifugal fans work with higher-pressure systems, while axial fans move large volumes of air at lower pressures.
Outdoor Condensing Unit: It consists of the compressor and condenser coil, which are important to the cooling process. The compressor increases the refrigerant pressure, which the condenser coil removes into the outside air for the refrigeration cycle to be complete.
Coil: The FCU system comprises a coil vital for heat exchange. During cooling, the room air is heated by the coil, which heats air in heating mode. It follows basic laws of thermodynamics, which are mainly conduction and convection.
Thermostat: Operating as an interface between the user and the control unit, the thermostat enables temperature setting. If the temperature goes above or below what was set, the fan coils HVAC will sense this, causing heating or cooling to adjust.
Filter: Dust, particles, and contaminants are caught within air filters, which help maintain indoor air quality. Consequently, this prevents damage to internal components and ensures better health.