How To Design A Room Air Conditioning System

Transcription

1 Comparison of HVAC Technology in Buildings Conventional HVAC Technology Bauer Optimising Technology

2 The Differences Room environment (Occupant Comfort) Energy Consumption Architecture

3 Air flows in a room Conventional HVAC System BAUER Optimising Technology Short Circuit No short circuits between supply air and exhaust

4 Air flows in a room Conventional HVAC System BAUER Optimising Technology Directional Air flow creates drafts! Slow air movement Directional Air flow Nondirectional air flow

5 Air flows in a room Conventional HVAC System BAUER Optimising Technology High air movement on facades - upwards in summer, downwards in Winter Slow air movement Downward air flow high α 1 NO downward air flow small α i

6 Air flows in a room Conventional HVAC System BAUER Optimising Technology Temperature stratification and Temperature islands create uncomfort Max Temperature stratification of 0.5 K at any direction T e m p e r a t u r e s tr a ti Temperature islands f i c a ti o n

7 Air flows in a room Conventional HVAC System Noise, drafts and insufficient mixture create a uncomfortable environment BAUER Optimising Technology Homogenus air mixture and slow air movements create a comfortable environment Short Circuit Downward air flow high α 1 Directional Air flow T e m p e r a t u r e s tr NO downward air flow small α i NO short circuits Nondirectional air flow a ti Temperature islands f i c a ti o n NO Temperature islands

8 The Differences Occupant Comfort Energy Consumption Architecture

9 Energy Conventional HVAC Technology BAUER Optimising Technology Only a little Temperature difference between Supply air and Room temperature possible! Big Temperature difference possible. This results in a high Air volume to cover the necessary room energy demand. Therefore the Air volume may be reduced up to 60%. For that a high Fan driving power is necessary! Only very little driving power is used!

10 The Differences Occupant Comfort Energy Consumption Architecture

11 Air flows in a room Conventional HVAC System BAUER Optimising Technology Specific diffuser Simple air diffuser

12 Architecture Conventional HVAC Technology BAUER Optimising Technology Ducting and HVAC plant space reduce the usable space within a building Little requirements to air supply outlets Design!

13 Conclusion P o w e r Conventionell BaOpt Air volume The Energie consumption The Comfort & The Room environment The Architecture

14 Mobile Architecture & Built Environment Laboratory A Diagnostic Toolkit for Multi-dimensional Testing of Built Internal Environments

15 Deakin University Callista Offices Plant WC Training Meeting rooms 1 Fire 1 2 3

16 Façade Analysis & Comfort Comfort Cart Locations E D A B C Comfort Cart Locations and Façade Analysis.. it s all about performance!

17 Thermal Comfort Carts according to the design by Dr. R. dedear

18 East Glass Wall Heat Transfer January it s all about performance! 17/01/ :00 17/01/ :45 17/01/ :30 18/01/2006 3:15 18/01/2006 7:00 18/01/ :45 18/01/ :30 18/01/ :15 18/01/ :00 19/01/2006 1:45 19/01/ :00 19/01/ :45 20/01/2006 1:30 20/01/2006 5:15 20/01/2006 9:00 20/01/ :45 20/01/ :30 20/01/ :15 20/01/2006 0:00 21/01/2006 3:45 21/01/2006 7:30 21/01/ :15 21/01/ :00 21/01/ :45 21/01/ :30 22/01/2006 2:15 22/01/2006 6:00 22/01/2006 9:45 22/01/ :30 Date & Time Glass Surface & Room Operative Temperatures Radiant Assymetry (W/m2) Rad Assym (W/m2) Surf Temp C Operative Temp Façade Analysis & Comfort

19 Façade Analysis & Comfort January Comfort Analysis Clo Value 0.8 CART-1 CART-2 Cart1 Air Temp Cart2 Air Temp it s all about performance! Predeicted Percentage Dissatisfied (ISO-7730) 9/01/2006 9:15 9/01/ :45 10/01/2006 0:15 10/01/2006 7:45 10/01/ :15 10/01/ :45 11/01/2006 6:15 11/01/ :45 11/01/ :15 12/01/2006 4:45 12/01/ :15 12/01/ :45 13/01/2006 3:15 13/01/ :45 13/01/ :15 14/01/2006 1:45 14/01/2006 9:15 14/01/ :45 15/01/2006 0:15 15/01/2006 7:45 15/01/ :15 15/01/ :45 16/01/2006 6:15 16/01/ :45 16/01/ :15 17/01/2006 4:45 17/01/ :15 17/01/ :45 18/01/2006 3:15 18/01/ :45 18/01/ :15 19/01/2006 1:45 19/01/2006 9:15 19/01/ :45 20/01/2006 0:15 20/01/2006 7:45 20/01/ :15 20/01/ :45 21/01/2006 6:15 Air Temperature (C)

20 On Site Weather & Solar Collection January Weather Conditons C band Wind Speed SOLAR W/m2 AVG_TEMP INDOOR AIR it s all about performance! Temperature ( C) & Wind Speed (m/s) 15/1/2006 0:15 15/1/2006 6:15 15/1/ :15 15/1/ :15 16/1/2006 0:15 16/1/2006 6:15 16/1/ :15 16/1/ :15 17/1/2006 0:15 17/1/2006 6:15 17/1/ :15 17/1/ :15 18/1/2006 0:15 18/1/2006 6:15 18/1/ :15 18/1/ :15 19/1/2006 0:15 19/1/2006 6:15 19/1/ :15 19/1/ :15 20/1/2006 0:15 Solar Radiation (W/m²)

21 CO 2 Analysis January Ventilation Analysis 30 CO2 28 Cart1 Air Temp it s all about performance! CO2 Levels (ppm) 9/01/2006 9:15 9/01/ :45 10/01/2006 0:15 10/01/2006 7:45 10/01/ :15 10/01/ :45 11/01/2006 6:15 11/01/ :45 11/01/ :15 12/01/2006 4:45 12/01/ :15 12/01/ :45 13/01/2006 3:15 13/01/ :45 13/01/ :15 14/01/2006 1:45 14/01/2006 9:15 14/01/ :45 15/01/2006 0:15 15/01/2006 7:45 15/01/ :15 15/01/ :45 16/01/2006 6:15 16/01/ :45 16/01/ :15 17/01/2006 4:45 17/01/ :15 17/01/ :45 18/01/2006 3:15 18/01/ :45 18/01/ :15 19/01/2006 1:45 19/01/2006 9:15 19/01/ :45 20/01/2006 0:15 20/01/2006 7:45 20/01/ :15 20/01/ :45 21/01/2006 6:15 Air Temperature (C)

22 Fan Power Savings Fan Pow er to FCUs 47% Fan Power Savings Power FCU4.2 Power FCU4.1 Std Fan Power.. it s all about performance! Fan Power (W) 16/01/ :02 16/01/ :02 16/01/ :02 17/01/2006 3:02 17/01/2006 8:02 17/01/ :02 17/01/ :02 17/01/ :02 18/01/2006 4:02 18/01/2006 9:02 18/01/ :02 18/01/ :02 19/01/2006 0:02 19/01/2006 5:02 19/01/ :02 19/01/ :02 19/01/ :02 20/01/2006 1:02 20/01/2006 6:02 20/01/ :02 20/01/ :02 20/01/ :02 21/01/2006 2:02 21/01/2006 7:02 21/01/ :02 21/01/ :02 21/01/ :02 22/01/2006 3:02 22/01/2006 8:02 22/01/ :02

23 Chilled Water Demand Chilled Water Demand Bauer 4.1 Bauer 4.2 WF 4.1 WF % Saving over Conventional Control System.. it s all about performance! % Valve Opened 16/01/ :30 16/01/ :00 16/01/ :30 16/01/ :00 16/01/ :30 17/01/2006 1:00 17/01/2006 3:30 17/01/2006 6:00 17/01/2006 8:30 17/01/ :00 17/01/ :30 17/01/ :00 17/01/ :30 17/01/ :00 17/01/ :30 18/01/2006 2:00 18/01/2006 4:30 18/01/2006 7:00 18/01/2006 9:30 18/01/ :00 18/01/ :30 18/01/ :00 18/01/ :30

24 Optimised HVAC Control Air Distribution Performance Testing: Bauer Optimising Technologies Test Team 1 Smoke Test 2 Moments Later 3 Uniform Air Distribution 4 Treatment of adjacent areas 5.. it s all about performance!

25 The Differences BAUER SYSTEM: Organised chaos Directional flow

26 The higher the savings, the better the Room Conditions The Ventilation Concept of BAUER Optimising Technologies 103 Kings Road Five Dock NSW 2046 Australia