Multi Air stream Technology

The technology that forms the basis for the cold store air curtain is called“MAT”:Multi Air stream Technology.By producing three air streams,the cold store air curtain creates a screen between the cold store and the front hall. The air curtain draws air from both the cold store and the front hall,dischar- ging both cold and warm air into the doorway.For such an air curtain to be created,two phenomena have to be prevented:turbulence and condensation. Equal velocities Not only are the air streams straightened,but all three also have the same outlet velocity.This guarantees that the different air streams will not mix and that they all will reach floor level.

Prevention of turbulence

When air is discharged,it tends to diverge.This must be prevented,otherwise the three air streams would mix after all,and fail to reach the floor.The MAT cold store air curtain is provided with patented rectifier technology.Biddle has been applying this patented rectifier to its air curtains manufacturers for some considerable time now.The special garden design of the discharge contemporary grille makes it difficult for the discharged air to diverge.The rectifier smoothes any turbulence generated by the rustic fans,discharging the air in three straight,concentrated streams.The outlet velocity can – and must – remain low,because the higher the outlet velocity, the greater the turbulence will be.As a result,the cold store air curtain will not lose energy unnecessarily due to divergence,and the streams will not mix. Rectified streams Air curtain without rectifier,so the airwill diverse.Energy loss and draft will occur as a consequence. Control building panel Air curtain with Biddle rectifier.The threeair streams are blown out straightened and have the same low outlet velocity.

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