textile duct texi-jet textile duct high induction diffusion through perforations applications advantages recommandations and limits of use 5.

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Nelson Webster
6 years ago
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1 texi-jet Page 1/5 high induction diffusion through perforations The TEXI-JET has been designed for high air velocity diffusion (7 < V < 15 m/s). This diffusion is ensured through rows of perforations designed for your project by our aeraulic engineering department. This method based on high air induction (rate > 20), offers an excellent air distribution effi ciency (heating and cooling) combined with the control of residual speed, avoiding any «air draught effect». applications Heating and cooling of large volumes large and average size stores, exhibition halls Auditorium, amphitheaters, theaters, concert halls... sports halls, multi-purpose halls Heating and cooling of high industrial storage warehouses needing a homogeneous and controlled temperature. Heating and cooling of sensitive industrial production premises, demanding regarding the control of residual speeds or high thermal applications : advantages printing halls electronics metallurgy plastic injection... High induction rate (> 20). Good control over residual air velocities and excellent comfort even with strong ΔT. High effi ciency for the heating of high premises (H > 8 m). The ideal solution to heat and cool premises whose height is between 4 m < H < 8 m and where comfort and a homogenous repartition of the air are wanted. Suitable to heat up to 200 W/m² and up to 300 W/m² when in cooling mode - Air fl ow up to 450 m3/h/ml. ducts do not clog. recommandations and limits of use To be avoided for low height premises (H < 4 m). The sizing of the network and of the ducts (quantity, length, perforation plan) must be set at the beginning of the project.

2 texi-jet possible fabrics All fabrics having a permeability below 50 m3/h/m² under 120 Pa as well as technical PVC fabrics can be used. Fabric codification PM1/E PVC - M1 VPU M0 RAL 7040 Type of fabric Polyester M1 fi re rating (availaible without fi re rating) Double faced polyester coated with PVC M1 fi re rating (available without fi re rating) Double faced fi ber glass fabric coated with polyurethane M0 fi re rating Black RAL 5005 *Standard colours PVC PVC M1 in white only Gree, RAL 6032 Red RAL 3020 Weight g/m² The indicated colours only apply for the fabric itself. Standard colour Permeability under 120 Pa 160 ** *** Black <1 Yellow RAL 1023 Green RAL 6032 Characteristics Washable in machine according to our instructions Washable with high pressure jet Can be dusted Non washable RAL 5005 RAL 5012 **Standard colours PM1 160g Red RAL 3020 RAL 7040 Page 2/5

3 Page 3/5 Selection chart for a circular duct Charts A and B : diameter s selection depending on the input air flow. Chart A Chart B

Design and data changes may occur without notice during F2A s continuous product

4 selection chart for a 1/2 circular duct Chart C Duct diameter Chart D Duct diameter Information and data can not be considered as contractual. Design and data changes may occur without notice during F2A s continuous product development. Charts C et D : diameter s selection depending on the input air flow. 2014/07 Page 4/5

5 Example of high induction texi-jet ductwork Page 5/5 Heating and cooling of a large DIY store 6.5 m 35 m Duct Ø 800 Duct Ø 800 Airflow dispatch through each duct available pressure 17 m 40 m Rows of perforations 17.5 m Duct Ø1250 A collector Ø1600 dispatches the airflow over 3 ducts: 2 ducts Ø duct Ø1250 (see chart C and D) Airflow per duct: duct Ø800 = m3/h per duct duct Ø1250 = m3/h Length of each duct: duct Ø800 = 13,7 m each duct Ø1250 = 23,7 m collector Ø1600 = 24,5 m 1. Surface to treat for each duct : S g S g = Length x Air throw 2. Total surface to treat : S t S t =sum of S g 3. «Average surface airflow : Q s Q s = Q t /S t 4. Airflow per duct : Q g Q g = Q s x S g The total available pressure of the fan P t is given by the following formula : P t = P stat + P dyn With : P stat = Pressure drop caused by the air passing through the perforations. It depends on the air diffusion velocity (here 9,7 m/s) Room s dimensions : 40 m x 35 m x 6,5 m ΔT hot = + 15 C ; ΔT cold = - 7 C Total airflow : m 3 /h 4 rows of perforations on each side positioned 50 (towards the bottom) from the horizontal shaft Air diffusion velocity through the perforations V s = 12,6 m/s P dyn = Dynamic pressure of the air when it enters the duct (see charts A à D ) here P dyn = 42 Pa

Multi-cone diffuser. Dimensions. Description FKD is an adjustable circular multi-cone diffuser, which is typically used for supply air.

Multi-cone diffuser. Dimensions. Description FKD is an adjustable circular multi-cone diffuser, which is typically used for supply air. Dimensions Vertical Ø N D F G Ø A Ø B C Horizontal Description is an adjustable circular multi-cone diffuser, which is typically used for supply air. The diffuser can be switched between horizontal and