General Ventilation

General ventilation is often required to satisfy the statutory minimum outside air required for each person working in a space. When the required ventilation rate is low it can sometimes be achieved by an extract only system, relying on natural infiltration or air leakage to make up air being extracted. In today’s more airtight buildings this method should be treated with caution as it is often more effective to provide a positive supply air system to work in conjunction with an extract system.

Enright Engineering Services Ltd can provide designs for specific applications.

Factory, Workshop and Office Supply and Extract

When supply air is required this will invariably need to be heated for winter conditions. This can be achieved in a number of ways.

Enright Engineering Services Ltd can offer specific recommendations for particular applications.

Fume and Dust Extract

We can offer the supply and installation of fume and dust extract systems together with advice on whether or not balanced supply air is required to avoid any implications or effect on heating equipment.

Heat Recovery Systems

There are various methods of recovering heat from the air being extracted and delivering it into the supply air such as, recuperation, thermal wheel, or run around coils.

Enright Engineering Services Ltd can offer specifically designed systems recovering the rejected heat from such equipment as freezers and fridges.

Air Handling Plant and Systems

These systems are purposely designed to suit our client’s requirements and incorporate an Air Handling Unit (AHU) and supply and extract ductwork. The units can be fitted with components such as heating coils, cooling coils, run around coils or other types of heat recovery i.e. thermal wheel or recuperator and mixing boxes to give minimum fresh air requirements when re-circulating air.

Depending on the level of filtration required AHU’s can be designed with pre-filter sections to protect the heating and cooling coils with higher efficient secondary filters to match the standard of filtration required for the particular application.

For clean room applications the installation of high efficiency HEPA filters would be used. The class of filter can vary depending on the clean room specification. These filters would often be installed directly behind the supply air grilles and can have an efficiency of up to 99.997%.

Humidity levels can also be specifically controlled by installing a humidifier section within the AHU housing.