Natural ventilation  
Mechanical ventilation
Natural smoke and heat extraction
Heating / heat recovery / heat utilisation
Sound insulation
Daylight illumination technology

Heating / heat recovery / heat utilisation

Basically, every form of heat recovery is based on the principle of conserving the heat generated by one medium and transferring it to another.

In industrial ventilation plants, the heat content of exhaust air is lost. It consists of a perceptible portion (sensitive heat) and a latent portion (depending on atmospheric humidity). The job of a heat recovery device in ventilation systems consists of taking as much heat content from the exhaust air as possible and transferring it to the incoming air stream. The heat recovered from the exhaust air then does not need to be produced again. This offers a decisive cost advantage.

The decision on whether to install a combined heat recovery and heating system must be based on cost comparisons and economic feasibility calculations, as well as energy management analyses.

GAL carries out project-specific analyses and suggests installation and operation options as a decision basis.