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Future Comforts Andrew Keogh Carrier Air Conditioning.

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Presentation on theme: "Future Comforts Andrew Keogh Carrier Air Conditioning."— Presentation transcript:

1 Future Comforts Andrew Keogh Carrier Air Conditioning

2 Air Conditioning Energy Use AC can account for over 1/3 rd of all electricity used in a building The UK National Grid has now become summer peaking. 1,300 MW extra load on hot days, growing at 8% Rapid growth in the use of AC is threatening our Kyoto commitments

3 Air Conditioning Energy Use

4

5 90 % 300 %

6 Natural Ventilation

7 Exposed building fabric Low internal gains Atrium / Chimney High thermal mass Open plan Shallow floor plan Sun shades or blinds Away from city centre Vents, wind catchers, solar chimneys Design Constraints

8 Dry BulbWet BulbHours Design Conditions

9 RefrigerantR22R134aR290R744R717R410a Cooling COP Pressure ratio Refrigeration Effect Inlet Quality Refrigerant Choice

10 T1 T2 T S COP=T2/(T1-T2) System Fundamentals

11 T1T2COP Air cooled 6/12 System Fundamentals

12 T1T2COP Air cooled 6/12 Water cooled 6/12 System Fundamentals

13 T1T2COP Air cooled 6/12 Water cooled 6/12 Water cooled 16/20 System Fundamentals

14 Dry BulbWet BulbHours Free Cooling

15 Dry BulbWet BulbHours Free Cooling

16 Variable Speed Drives

17 Heat Pumps ? The Answer


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