Positive Pressure Fan

Positive pressure fans provide a convenient portable source of air with the firestore s selection of positive pressure fans.

Positive pressure fan.

Ppv fans come in many different sizes from 16 blades that fit in the tightest of apparatus compartments to large scale ppvs for the largest of jobs. They re also often referred to as positive input ventilators piv and are often sought out and installed by people who find they have condensation issues in their home. By positive pressure i mean that the air pressure inside the house is higher than outside pressure which tends to push air from inside to outside. Positive pressure rooms maintain a higher pressure inside the treated area than that of the surrounding environment.

First let s look at how a positive pressure mechanical ventilation system works. Designed for high powered air movement the super vac positive pressure ventilators are for use in extreme conditions. Full scale experiments were conducted to characterize a positive pressure ventilation ppv fan in terms of velocity. The results of the experiments were compared with fire dynamic simulator fds output.

We also carry electric smoke ejectors blower exhausters confined space heater systems and more. Because air heads from a high air pressure area toward a low pressure area the concept pulls pushes the fire and debris toward the exhaust point with it. In this way any airborne particle that originates in the room will be filtered out. Experiments were performed in an open atmosphere and in a simple room geometry.

Excess air escapes passively through designed outlets. Fans or filters blow air into the system creating a positive pressure. Positive pressure ventilation in your home what exactly is positive pressure ventilation and how does it fit into your home. Available positive pressure ventilation ppv blower styles and models.

Positive pressure ventilation uses positive airflow to remove heat and products of combustion from a structure on a fire scene.