Glossary Index of Parking Terms

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Variable Frequency Drive (VFD)

An electronic device used to control the speed and torque of an electric motor. It is a type of motor controller that allows the user to vary the frequency and voltage supplied to the motor, thereby enabling precise control over motor speed and performance.

Vertical circulation

The movement of vehicles, pedestrians, or both between different levels or floors within the parking facility. It involves the vertical transportation elements and pathways that enable efficient access to parking spaces on various levels.

Vertical Reciprocating Conveyor (VRC)

A Vertical Reciprocating Conveyor (VRC), also known as a Material Lift or Freight Lift, is a machine that moves materials or goods between different levels of a building or facility. It consists of a platform or carriage that moves vertically along guide rails, with the platform or carriage able to stop at different levels.

VRCs are often used in industrial settings to move materials or products between floors of a warehouse or manufacturing facility. They can also be used in retail or commercial settings to move goods between floors of a store or office building. VRCs can be manually operated or automated, and they can be designed to accommodate a wide range of load sizes and weight capacities.

VRCs are different from traditional elevators because they are designed for the specific purpose of moving goods, rather than people. Additionally, VRCs can be installed in spaces where traditional elevators may not be feasible or cost-effective, such as in existing buildings or in areas with limited space.

Volatile Organic Compounds (VOCs)

Volatile Organic Compounds (VOCs) are a group of chemicals that contain carbon and easily vaporize at room temperature. They are emitted as gases from various sources, including solids or liquids, and can have both natural and human-made origins. VOCs are commonly found in products such as paints, solvents, cleaning agents, adhesives, fuels, and many others.

VOCs can have adverse effects on human health and the environment. When released into the air, they can contribute to the formation of ground-level ozone, a key component of smog. Prolonged exposure to high levels of VOCs can lead to respiratory problems, headaches, dizziness, allergic reactions, and other health issues.

Due to the potential health and environmental risks associated with VOCs, regulations and standards have been established to control their emissions. These regulations often require the use of low-VOC or zero-VOC products and the implementation of proper ventilation systems to minimize exposure.

In indoor environments, such as homes and offices, VOCs can also contribute to poor indoor air quality (IAQ). Proper ventilation and the use of low-VOC materials and products are essential for maintaining healthier indoor air quality and reducing the potential negative impacts of VOCs on occupants.

Overall, VOCs are a group of chemicals that readily evaporate into the air and can have detrimental effects on human health and the environment. Managing and reducing VOC emissions is important for maintaining air quality and promoting a healthier living and working environment.