UNDER-CHAIR DIFFUSERS OVERVIEW The KS under-chair diffuser was developed to meet the need for diffusing air in places such as cinemas, theatres, and auditoriums. These locations are subject to very strict specifications that make air-conditioning and ventilation of these spaces problematic, from both a strictly technical and an architectural point fo view. Using KS diffusers fully solves this type of problem simply and efficiently. In practice, the KS series diffusers use air coming from an air-conditioning system, diffusing it at the base of the chair, generating a microclimate in the immediate vicinity. Advantages offered by KS diffusers - Low plant cost - Maximum comfort around the people - Maximum energy savings, as the entire room does not have to be air-conditioned due to the micro-climate created - Minimum noise emissions - Low residual velocity - Limited temperature gradient Models available: - KS-A : Model complete with chair support and a Venturi cone, fan and upper equaliser grid. - S-B : Model complete with Venturi cone, fan and equaliser grid at the top. OPERATION The primary air is introduced at the base of the cylinder (1), via a diffuser with adjustable fins (3). These cause the air to change direction and force it towards the holes in the sides of the cylinder. This airflow creates a low pressure area in the centre of the diffuser, where there is an inverted cone (2) that draws in ambient air and mixes it with the primary air. This creates a mixed flow that is introduced into the room via the holes in the sides of the cylinder (1), thereby creating a low temperature gradient. 4

UNDER-CHAIR DIFFUSERS TECHNICAL CHARACTERISTICS CONSTRUCTION Perforated conical cylinder, with support for a chair, diffuser with fins adjustable in height and collar for fixing to the floor, all in RAL 9005 epoxy powder coated steel. INSTALLATION The KS series of diffusers can be installed with any type of chair. It can be used to support the chair, or more simply positioned on the floor under the chair, thereby not limiting the designer's choice of chair. EXPERIMENTAL FINDINGS The induced airflow conveys the air coming into the opening immediately below the chair (at the intake into the Venturi...

UNDER-CHAIR DIFFUSERS Under-chair diffuser - model complete with chair support, Venturi cone, diffuser with height adjustment, upper equaliser grid and floor fixing plate. Painted RAL 9005 black. Under-chair diffuser - model complete with Venturi cone, diffuser with height adjustment, upper equaliser grid, and floor fixing plate. Painted RAL 9005 black.

FLOOR DIFFUSERS OVERVIEW Overview: The TE-KP series floor diffusers belong to the under-chair diffuser category; ideal for places where the best comfort levels are desired both in temperature and acoustics. Cinemas, theatres and conference halls are some examples. The internal drum has a helicoidal motion for the flow of air to the outside, improving circulation and allowing excellent results with a temperature difference no bigger than 6°C between the air received and the room temperature, both when heating and cooling. The TE-KP series diffusers are equipped with a supporting ring (two versions...

FLOOR DIFFUSERS PERFORMANCES TE-KP SERIES Distance from centre of diffuser m Air Velocity By means of the cross flow of the air streams on the floor, the speed of the air itself reduces rapidly moving away from the centre of the diffuser. The maximum speed is reached at a high equal to 50mm. Diagram 1 shows, in relation to the load, the distance to which the speed of the air at a height of 50mm reaches the value of 0,2m/s with an initial difference of temperature of 3°K. Diagram 2 shows, in relation to the load, the speed of the air at 450mm from the diffuser from height from the floor of 50mm...

FLOOR DIFFUSERS PERFORMANCES TE-KP SERIES Diagram 4 Characteristics diffuser TE-KP125 Allow to obtain, in relation to the air flow, the pressure drop in Pa and the sound power in dBa with and without the dust collection basket. Measurements made with shutter completely open. Diagram 5 Characteristics diffuser TE-KP160 Allow to obtain, in relation to the air flow, the pressure drop in Pa and the sound power in dBa with and without the dust collection basket. Measurements made with shutter completely open.

DIFFUSORI A PAVIMENTO PERFORMANCES Distance fronm the centre of the diffuser(m) SERIE TE-KP Diagram 6 Characteristics diffusers TE-KP225 The diagram highlights, in function of the load, the distance in metres from the centre of the diffuser where a value of 0,2m/s is measured, at a height of 50mm. es taken with a difference in temperature between injected air and room temperature, equal to3°K. Air flow (m³/h) Diagram 7 Characteristics diffuser TE-KP225 Allow to obtain, in relation to the air flow, the pressure drop in Pa and the sound power in dBa .with and without the dust collection basket...

FLOOR DIFFUSERS TE-KP SERIES MAIN DIMENTIONS TE-KP Fixing to raised floor TE-KP Fixing to raised floor with plenum TE-KP Fixing to step CODES DESCRIPTION Standard diffuser Diffuser with stainless steel grilled plate Dust collection basket Shutter for basket Supporting ring for raised floors Supporting ring for concrete floors Galvanized sheet Plenum with Ø125 connection Note : The shutter can not be used without the dust collection basket

STAIRCASE SWIRL DIFFUSERS OVERVIEW Overview: The KPS series staircase swirl diffusers belong to the underchair diffuser category; ideal for places where the best comfort levels are desired both in temperature and acoustics. Cinemas, theatres and conference halls are some examples. Technical characteristics: The KPS series staircase swirl diffusers are realized in the models: KSP-QQ squared diffuser, squared finned surface; KSP-QC squared diffuser, circular finned surface; KSP-CC circular diffuser, circular finned surface. Installation : With subframe KSP-QQ-P KSP-QC-P KSP-CC-P With spigot and...

STAIRCASE SWIRL DIFFUSERS OVERALL DIMENSIONS Fixing with subframe KSP-QQ-P KSP-QC-P Fixing with spigot and equalizer KSP-QC-C