CFD-FDS-FEA-PyroSim Simulation and Projects

Parking (Car park) Ventilation by Jet Fan

Construction and operation of commercial and office complex is highly booming, according to the optimal use of existing spaces in major cities. Due to the compression of space in such complexes, parking’s are designed with assumption to use the most space possible. Large numbers of cars in car park and enclosed spaces, it will be certainly necessary to design a very powerful ventilation system.

Design and implementation of ventilation system is necessary for enclosed parking’s and car park, because of vehicle density. During the normal operation in a car park, vehicles produce pollutant gases like carbon monoxide and NOx which could cause serious damages to people inside the park lot. There is also another risk in car parks, which is the possibility of fire. Considering the enclosed area inside the parking’s, Incidence of fire will produce deadly gases and huge amount of smoke. According to this situation, parking ventilation systems must have capability to control the smoke and deadly gases and provide required time for people to escape from danger.

The old method for parking ventilation was using ventilation ducts in roof. This method cause many limits in design and operation and in fire situation, ventilation was not good enough.

New technology in this field is application of jet fan for normal ventilation and smoke extraction in case of fire in parking’s. In fact, this technology represents the most innovative and cost-effective alternative to traditional ducted mechanical extraction systems. Carefully managing the project in all its development stages, which requires the fundamental use of fluid dynamics calculation programs - CFD - and also ensures that the system is working correctly. Jet Fan system provides either normal ventilation and can also be provided for smoke extract in case of fire in parking lot.

PyroSim and FDS are both using as main software to simulate the fire reaction in different environments like Building, parking lot, Car park, Subway, Tunnel, Cinema, Commercial office complex and …

Using PyroSim we could define smoke detectors and sprinklers in 3D model, in order to examine the current design in case of fire with both software.

According to our experience in tunnel ventilation design, CFD, FDS and Pyrosim - Pyro Sim- (Fire simulation), and by using professional experts, ARACo could handle international project especially in Middle East. We can handle following types of projects:

- Road tunnel ventilation design and simulation

- Railway and subway tunnel ventilation design and simulation

- Ventilation CFD projects (Tunnel, Parking lot, Stadium and )

- Fire simulation using PyroSim (FDS) (Tunnel, Parking lot, Stadium and )

- Evacuation Simulation using Pathfinder 

- Industrial ventilation design 

Tunnel ventilation - Heat Transfer in Underground Rail Tunnels

PM effect on health article - PDF

Parking CFD case study article free download

fire simulation in stadium by pyrosim and FDS

PIARC-Air-Emissions-Standard PDF Download
 
Piarc THE NEW directive on tunnel safety Download
 
Railway Ventilation Article in Persian
 
PIARC Vehicle-emissions-and-air-demand-for-ventilation Download

NFPA 88A Standard Free download

Ashrae Ventilation standard free download

NFPA 130 standard Free Download 

American Conference of Governmental Industrial Ventilation download

Handbook_of_Tunnel_Engineering_II__Basics_and_Additional_Services

Volume I: Handbook of Tunnel Engineering Download

Transfer of heat from high temperature source to low temperature source is called heat transfer. The heat transfer can also take place within the system due to temperature difference at various points inside the system. The difference in temperature is considered to be ‘potential’ that causes the flow of heat and the heat itself is called as flux.

Heat transfer methods

In heat transfer fundamental, there are three modes of heat transfer between two objects: conduction, convection and radiation.

These methods have been described below:

Conduction: The transfer of heat between two solid bodies is called as conduction. It depends on the difference in temperature of the hot and cold body.

Convection: The transfer of heat between a solid surface and the liquid is called as convection heat transfer. Convection can also take place between two types of fluids like gas and liquid and also inside a fluid.

Radiation: When two bodies are at different temperatures and separated by distance, the heat transfer between them is called as radiation heat transfer. In case of the conduction and convection heat transfer there is a media to transfer the heat, but in case of the radiation heat transfer there is no media. The radiation heat transfer occurs due to the electromagnetic waves that exist in the atmosphere.

Heat transfer simulation

Heat exchanger simulation

Convection heat transfer simulation

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