HVAC System Controls Quiz

Compressor is a component of the refrigeration system, not the control system.

The thermostat regulates the temperature by controlling the HVAC system's operation based on the set temperature.

AHU is responsible for circulating and conditioning air within the HVAC system.

BACnet is a widely used communication protocol for building automation and control networks.

Relays control the flow of electricity in HVAC systems, switching electrical circuits on or off.

CO2 sensors measure carbon dioxide levels, indicating indoor air quality.

R-22 was a widely used refrigerant, but its use is being phased out due to environmental concerns.

Motorized dampers control the flow of air in HVAC systems, adjusting airflow to meet specific requirements.

VAV systems offer individualized temperature control in different building zones.

Heat exchangers transfer heat between two fluid streams, contributing to the heating or cooling process.

Feedback control systems adjust outputs based on information received from sensors to maintain desired conditions.

VAV systems adjust the volume of air supplied to different zones based on heating and cooling needs.

Pressure transducers measure duct pressure, providing information for system adjustments.

Economizers optimize energy use by incorporating outside air to cool or ventilate the space.

Actuators are common components in pneumatic HVAC systems, controlling airflow and other functions.

BMS oversees and manages various building systems, including HVAC, for optimal performance.

EER measures the energy efficiency of HVAC systems, indicating the cooling output relative to energy input.

Pneumatic systems are a type of HVAC control system, not a complete HVAC system.

BAS primarily focuses on managing and optimizing building systems, excluding security monitoring.

Refrigerants absorb and release heat, providing the cooling effect in HVAC systems.

PID controllers regulate temperature, pressure, and flow by adjusting system parameters.

DDC systems use digital technology to directly control HVAC equipment.

DOAS systems supply outdoor air directly to the spaces they serve, improving indoor air quality.

Enthalpy wheels recover energy from exhaust air, improving overall HVAC system efficiency.

ASHRAE is a professional organization setting standards for HVAC and building systems.