Engineered Ventialtion

engineered-ventilation Proven through years of experience in countless projects our non-moving-parts ventilation systems are now modeled using Computational
Fluid Dynamics [CFD], a tool that is project dependent. RVI Engineered Ventilation designs and develops ventilation systems to handle all heat-load levels from hot-spot furnace areas to general on-site workshops. They too are part of the complete ventilation solution.



RVI will provide management, site supervision and/or construction services as required.


RVI was one of the first companies to adopt the concept of Single Responsibility Services, thus bringing various aspects of the project under one contract to maximise accountability.


Because we take responsibility for engineering design, product manufacture, supply, construction management and fixing, we guarantee the performance of the finished product and its components where and when they matter most – in situ as a working entity.

Aluar SMELTER, Argentina

Gravity Ventilation Systems

Gravity ventilation systems are an essential part of the buildings functionality. Their specific function is essential to the building envelope, the system clears fumes and heat from within the building ensuring a safe working environment.

Each system is designed to meet the individual requirements of a specific structure, and because our systems have been independently designed, our clients can depend on the knowledge they will function as predicted when in place.

RVI’s systems meet the global requirements of high heat load buildings on a daily basis, from aluminum smelters to power stations and glass manufacturing plants. These engineered solutions are in operation 24/7.


Gravity Ventilation Design

Our ventilation systems function optimally because RVI has the ability to predict their intended installed performance in advance. The use of state-of-the-art engineering techniques, coupled with more than 80 years’ experience, ensures we provide the most cost-effective and technically superior solutions for our clients.

  • Mathematical and CFD modeling for systems design
  • Finite element analysis
  • CAD/CAM design and engineering
  • Acoustic engineering
  • Prototype development and modeling

We have a complete set of air inlet and outlet systems from which to build ventilation systems for your project.

We are able, as required, to create systems incorporating:

  • Simple louvres, multi-pass louvres, opening and closing louvres, stormproof, acoustic, and/or architectural louvres.
  • Roof top ventilators, capable of dealing with various heat parameters. For further details on these options please contact your nearest RVI branch to obtain a comprehensive Engineered Ventilation Systems brochure.

General Features:

  • Gravity ventilation systems are designed to take advantage of the naturally existing thermal forces in a known structure.
  • Air inlet systems at ground level allow cool air to flow into the structure. The warmer air inside the structure rises and flows out through roof mounted ventilators. The speed of this action increases and decreases in line with temperature changes in the building, creating ‘rivers of air’ that keep conditions inside the envelope within specified parameters.
  • Because there are no moving parts, there is nothing to impede this action or break it down.

Current Projects

Mozal Aluminium Smelter, Mozambique

Customer: Sqm of material used: m². Brief description of project: Image Gallery

Aluar Smelter, Argentina

This project was awarded to RVI and required installation of IBR Profile Roof and Sidewall Sheeting

Emal Smelter, Abu Dhabi, UAE

This product is the SF1000 and is used as a low profile ventilator…