Car Parks Ventilation - Falvent

Car Parks Ventilation Overview

Underground parking plays a variety of roles in our daily lives, not only for saving ground space and clearing it of cars, but also allows to park a lot more vehicles. It can also allow a lot more storage space.

Underground car parks are generally unable to vent toxic exhaust fumes naturally, and the same is true of harmful smoke if a fire breaks out, due to there not being enough openings for the natural ventilation hence the mechanical extract systems are required.

Mechanical ventilation must provide 6 ACH (Air Changes per Hour) under normal conditions. In the event of fire this rises to 10 ACH.

DUCTLESS CAR PARKS VENTILATION SYSTEM

Rectangular or circular ducts that are used to move air from the intake/exhaust to the desired location but that demands a larger space for ducting installation but this is difficult under constraint of a normally limited space in car park

Ductless designs use jet fans at specific locations over driveways to drive contaminants away without need for ducts as both to reduce levels of polluted air and to assist with the extraction of smoke in the event of a fire.

A jet fan is a long cylindrical fan that generates a high-velocity jet of compressed air ejecting from the trailing edge of the blade, resulting in the forward movement of air

JET FANS VS DUCTED SYSTEM

The advantages of using jet fans, instead of a conventional ducted system, are:

  • Less ductwork to install making coordination of services easier and with no obstruction to other services.
  • Lower height required, resulting in savings in the construction cost.
  • Lower emergency power required thus, a smaller emergency generator set is required.
  • Lower running energy cost, due to lower static heads required for the main fans.
  • Lower operating cost.
  • The ability to identify the origin of fires.
  • Better air movement.
  • Ease of operation (zone control is possible).
  • Generation of lower noise levels.
  • More pleasing aesthetics.
  • Less cleaning of ducts.
  • Better air distribution through greater air movement within car parks.
  • can be operated to be fully reversible to move the smoke in one of several directions, depending on the location of the fire.

WHY WE ARE DIFFERENT

FALVENT is a Saudi manufacture offers a complete solution to meet underground ventilation needs during construction and after operation to achieve the air quality and provide standard ventilation.

FALVENT work with a qualified consultants to delivery of projects on time, to an agreed cost and to the highest quality. In order to optimize our solutions, we also use advanced CFD analysis to get an effective performance.

FALVENT cooperates with the strategic cooperation with main advantage manufactories European and Chinese manufacturers specialized in tunnel ventilation to produce fans according to international manufacturing as well as in line with the Saudi market.

FALVENT starts working with its customers from the initial study of the tunnel, in order to provide an optimal solution for each project. Also, FALVENT has a technical assistance department with the following services:

  • Installation and Erection.
  • Testing and Commissioning
  • Maintenance and Diagnostics
  • Spare parts and Upgrade.

JET FANS AND MAIN AXIAL FLOW FANS

The jet fans and main flow axial fans can be used to clear the atmosphere inside the car parks and achieve the safe evacuation during the emergency case.

CARPARK JET FANS (CFC SERIES)

MAIN AXIAL FLOW FANS (AXF SERIES)

VFD ROLE IN CARPARK VENTILATION

The variable frequency drive (VFD) controls the fan motor running achieve the effective control of the carparks ventilation fans as follows:

  • Can be adjusted by the tunnel’s overall control system to meet changing air flow needs during the day.
  • Has a very significant impact on energy consumption. Very small speed changes can yield large energy savings – a speed reduction of 10% results in a 27% energy saving.
  • Reducing fan speeds can also reduce noise levels – reducing the speed by only 20% will reduce sound pressure by more than 50%.
  • Helps in evacuation and fire suppression promptly changing fan speed and rotation direction according to a need.