Krantz Components. Multifunction Sail AVACS. Cooling and Heating Systems

Transcription

1 Multifunction Sail AVACS Cooling and Heating Systems

2 2

3 AVACS Air Ventilation And Cooling System 3

4 System design Air diffuser box Air connection Sound absorbers (optional) Cooling element with heat conducting fins Fastening crossbar Perforated rectangular metal tile, e.g. 2-piece tile, with acoustic lining Connection for water supply and return via flexible hoses 4

5 Arrangement in room and function Cooling Heating Air distribution Sound absorption 5

6 Features Output increased by up to about 60% compared with closed chilled ceiling systems High cooling & heating output thanks to heat removal and supply via air & water streams Air diffuser not visible from below Supply air flow rate can be up to 28 l/s [100 m³/h] High level of thermal comfort due to air distribution along the sail area High induction of indoor air Low overall height; customized lengths and widths Designs available with different connection spigots Sound absorption thanks to acoustic lining; it can be increased by optional sound absorbers Good performance data in conjunction with sound absorbers Layout proposal can be made by our sales engineers Ease of mounting 6

7 Higher output resulting from air stream and external supply air Air distribution above and below the sail Chilled sail AVACS Cooling with circulating air stream Enhanced cooling with external supply air 7

8 Output in W/m² Higher output resulting from air stream Linear temperature difference in K AVACS with 100 m³/h supply air, supply air temperature 26 C AVACS with 100 m³/h supply air, supply air temperature 18 C Sail made up of perforated rectangular metal tiles Closed chilled ceiling made up of perforated rectangular metal tiles Waterside output referred to active area to EN 14240, without sound absorbers 8

9 High cooling and heating output 100% 90% 80% 70% Total output Kühlen: 611 W Heizen: 585 W 0 W 268 W Example: Sail area 3.06 m² Specific output: - waterside: 112 W/m² - airside: 88 W/m² - total: 200 W/m² 60% 50% 40% 30% 20% 343 W 585 W luftseitige Leistung: wasserseitige Leistung: Example: AVACS sail L = mm; B = 900 mm; 2-piece sail, without sound absorbers Cooling: 17 C/19 C/26 C supply air: 18 C, 100 m³/h 10% Heating: 38 C/32 C/20 C supply air: isothermal, 70 m³/h 0% 9

10 Air diffuser not visible from below 10

11 Sound power level L WA in db(a) Pressure drop p L in Pa Supply air volume flow rate up to 28 l/s [100 m³/h] m³/h Kühlfall 70m³/h Heizfall pl Supply air volume flow rate: 28 l/s [100 m³/h] 35 db (A) / < 30 Pa 30 Values for oval air connection 158 x 70 mm Air volume flow rate in m³/h 11

12 High level of thermal comfort Air flow pattern below the AVACS The air stream slides along the sail (Coanda effect) 12

13 High level of thermal comfort Measurement of indoor air flow 1: Mean air velocity in m/s 2: Turbulence intensity in % 3: Air temperature in C < 0.10 m/s 0.10 m/s 0.21 m/s 0.21 m/s 0.25 m/s > 0.25 m/s 13

14 High induction of indoor air 14

15 High induction of indoor air Primary air (supply air) Secondary air (indoor air) Induction nozzles Air diffuser box 15

16 Low overall height / Customized lengths and widths 1. B a : 680 mm 2. Oval spigot 158 x 70 (for flex duct DN 125) 3. H: 130 mm 4. H d min : 150 mm B: mm L: mm L tot : < mm Active area: ~ L a x B 16

17 Designs with different connection spigots OVAL 158 x 70 mm ROUND DN 100 for round flex duct DN 125 (Da: 132 mm*) or Quadroflex duct, nominal dimensions 158 x 70 Form 3 (B a : 165 x H a 77 mm; D hydr. : 101 mm) for flex duct DN 100 (D a : 107 mm*) ROUND DN 80 for flex duct DN 80 (D a : 87 mm) *Please consider spacing to ceiling! 17

18 Sound absorption coefficient Comparison of sound absorption properties Design option Large elements Small elements No. of rows Row spacing Covered area Suspension height [1.750 x mm] [1.200 x mm] [mm] [m²] [mm] Number of sound absorbers without sound absorbers rows with sound absorbers rows ,9 0,8 0,7 0,6 0,5 0,4 0,3 0,2 0, Measurement results, 1/3 octave band, in Hz Arrangement of sound absorbers without sound absorbers with sound absorbers Absorption coefficient 125Hz 250Hz 500Hz 1kHz 2kHz 4kHz a w Class without sound as2 [-] D absorbers with sound absorbers as10 [-] C 18

19 Output in W/m² Comparison of specific outputs with and without external supply air and sound absorbers Output with supply air 100 m³/h supply air temperature 18 C without sound absorbers at 8 K 114 W/m² Output with supply air 100 m³/h supply air temperature 18 C with sound absorbers at 8 K 107 W/m² Output without supply air without sound absorbers at 8 K 100 W/m² Linear temperature difference in K Output without supply air with sound absorbers at 8 K 94 W/m² Waterside outputs referred to active area to EN

20 Layout proposal by sales engineer 20

21 Ease of mounting Mounting of fastening crossbars using standard threaded rods and/or mounting rail systems Easy suspension of sail Position the sail against the fastening crossbar and fix it with screws or locking split pins 21

22 Very small transport volume Installation of air diffuser box on site Low space requirement and good stackability of metal tiles for transport Reduction of risks of damage during transport 22

23 Further features and possible options Angle of view / Fastening Pull-down design of sail / Security wires for pulling or taking sail down Standardized dimensions of rectangular metal tiles Customized solutions 23

24 Angle of view / Suspension height Sail width Suspension height Room height Lateral spacing Ceiling services e.g. lighting 24

25 General mounting detail: fixing points 25

26 Optional: security wires for pulling or taking sail down 26

27 Standardization of sail sizes Target: Storage of metal tiles to shorten delivery times To enable different sail sizes with 3 lengths of metal tiles To reduce set-up costs To simplify order processing 27

28 Standardization of sail sizes 3 lengths with one sail width: mm mm mm mm 28

29 Standardization of sail sizes 3 sizes 13 size options e.g.: mm 1500 mm 1500 mm e.g.: mm 1750 mm 1500 mm e.g.: mm 1750 mm 1750 mm Or further combinations: mm; mm; mm; mm 29

30 Standardization of sail sizes T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 T11 T12 T Total length: T1 T7 T13 T2 T8 Note: Largest sail with air diffuser box at the head T3 T9 T4 T10 T5 T11 T6 T12 30

31 Detail of clamp Clamp for fixing the sail (under testing) 31

32 Customized solutions AVACS-Solar Air diffuser box with built-in fan for recirculated air Parallel connection of heating/cooling coils via 4-way distributor with push-in fittings Parallel connection of heating/cooling coils via the distribution tubes (d = 15 mm) with heat conducting fins located in the sail; with active heat transfer 32

33 33 Thank you for your attention!

34 A trademark of Caverion