Printed Circuit Heat Exchangers for Supercritical CO 2 Cycles

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1 Printed Circuit Heat Exchangers for Supercritical CO 2 Cycles MIT-Symposium on Supercritical CO2 cycle 6 th March 2007 Stephen John Dewson 1

2 Content Heatric & PCHE Development Strategy Materials Engineering Design Heat Exchanger Developments Software and Modelling Nuclear Applications Conclusions 2

3 Meggitt PLC Aerospace Systems Division Aerospace Equipment Division Electronics Division Defence Systems Division Aerospace Braking Systems Division HEATRIC Avica UK Avica USA Endevco Nacesa / Piher Dunlop Wheels & Brakes Whittaker Controls Meggitt Defence Systems UK Meggitt Avionics Airdynamics Meggitt Defense Systems (USA) 3 S-TEC Vibro-Meter DSS Meggitt Safety Systems Meggitt Silicone Products Dunlop Ice Protectin Dunlop Precision Rubber Dunlop Equipment Serck Stewart Warner South Wind Western Design Caswell Cartwright Electronics

4 Meggitt plc FTSE 250 company; market capitalisation (March 2006) ca. 1.5 billion ($2.9 billion) 5600 employees across 30 companies predominantly in USA, UK, Switzerland, China Focus on aerospace, defence systems and electronics sectors 2005 Results: Turnover for 2005 up 30%, at 616 million ($1.29 billion) Underlying profit before tax up 29%, at 116 million ($228 million) Product development spend during 2005 was 35 million ($69 million), 5% of turnover 4

5 Heatric Printed Circuit Heat Exchangers Printed Circuit Reactors 5

6 Heatric 1980 PCHEs developed at Sydney University 1985 Heatric founded in Australia 1990 Relocated to UK - joined Meggitt group staff, $35 million annual sales Factory Extension 6

7 PCHE Characteristics space and weight savings Shell & Tube 108 tonnes PCHE 15 tonnes 7

8 PCHE Characteristics temperature and pressure 8

9 PCHE Characteristics versatile design Size and cost reduction by multistream heat transfer 9

10 PCHE Characteristics construction 10

11 PCHE Construction 11

12 Heatric Development Strategy Maximise: Value Growth Balance: Technology Strengths Materials Engineering design Commercial Opportunity Technology Strengths Manufacturing Commercial Opportunity Oil and Gas Market Understanding Chemical processing Non fossil fuels Market Understanding Energy 12

13 PCHE Materials diffusion bonding Stainless steels 300 series Duplex UNS S31803 Titanium grade 1, 2 & 3 Nickel 200 & 201 Copper Alloy 800H 253MA Alloy HX Alloy 617 Alloy 230 pre development 13

14 Materials - development Aluminium Coated PCHE Passages Diffusion Bonded Alloy

15 Heat Exchanger Developments Platelet Design 15

16 Heat Exchanger Developments IHX Concept He vs. He or N 2 IHX 600MW Design Temp 950ºC Alloy HX, 617 or 230 Weight < 100 tonnes 16

17 Heat Exchanger Developments s-co 2 Concept s-co 2 vs. s-co 2 or water 170MW 98% Effectiveness Design pressure 200 bar Weight < 75 tonnes 17

18 Heat Exchanger Developments Helium IHX Concept Helium vs. Helium 170MW 98% Effectiveness Design pressure 80 bar Weight < 75 tonnes 18

19 Heat Exchanger Developments Diffusion Bonded Formed Plate Heat Exchanger (FPHE) 19

20 Heat Exchanger Developments Diffusion Bonded Formed Plate Heat Exchanger (FPHE) Manufacture in Corrosion Resistant Alloys Weight Reduction Size Reduction Cost Savings 20

21 Bonded FPHE core 21

22 Current PCHE and FPHE Heat Exchangers Requirements PCHE FPHE High Temperatures 800 C+ (limited by material) 800 C+ (limited by material) High Pressures High Effectiveness Low Pressure Drop High Compactness 500 Bar (Max Typical) 200 Bar (Max Typical) 98% + 98% + Based on Design Bigger channels Highly Compact Erosion Resistance Corrosion Resistance Longer Life Over 700 PCHEs in operation worldwide Limited by material Limited by material Limited by material Over 20 tonnes of FPHEs sold since market launch in

23 Software and Modelling In-House Design Capabilities for: Thermal Design Hydraulic Design Mechanical Design Steady state and Transient Analysis Design models proven with operational experience Supported by 15 years testing at Sydney University 23

Temperature C 800 700 600 500 400 300 200

24 Software and Modelling Transient Analysis PCU Trip Average Metal Temperatures Temperature C Time Seconds Cold Mid Hot 24

25 Software and Modelling Validation Transient Testing 25

26 Nuclear Applications Helium Recuperators operating temperatures 550 C operating pressures 100 bar Carbon Dioxide Recuperators operating temperatures 450 C operating pressures 200 bar Intermediate Heat Exchangers operating temperatures 1000 C operating pressures 100 bar He / He and He / N 2 26

27 Nuclear Applications - Supplied Helium Recuperators KAIST operating temperatures 800 C operating pressures 30 bar IST operating temperatures 450 C operating pressures 100 bar PBMR (design contract) operating temperatures 500 C operating pressures 86 bar 27

28 Nuclear Applications - Supplied Carbon Dioxide Recuperators MIT operating temperatures 650 C (design T 662 o C) operating pressures 200 bar ( design P 210 bar) Argonne operating temperatures 200 C operating pressures 215 bar TIT operating temperatures 300 C operating pressures 130 bar 28

29 Nuclear Applications Commercial Experience Industry Govt. Agencies & Commissions Academic End Users GA Westinghouse PBMR Bechtel Bettis JAERI Purdue Univ. Eskom MIT Fuji Electric EDF TIT Toshiba KAIST Argonne Natl. Lab HTR-E KHI Framatome MHI IHI CEA IST 29

30 Conclusions Heatric PCHE and FPHE Heat Exchangers are fully developed, commercially available, and capable of meeting the requirements of Generation IV. Heatric manufacture a wide range of PCHE, FPHE and PCR products. PCHE and FPHE have Thermal, hydraulic, mechanical and life characteristic fully developed. Continual leading edge product development. Have the engineering resource to undertake studies and development programmes. Actively involved in nuclear applications since 1999 A leading position for the supply of recuperators The only currently available technology for the supply of high temperature IHX Heatric are ideally placed to support the US nuclear renaissance. 30

31 Smart engineering for extreme environments 31

Heat Exchangers for the Next Generation of Nuclear Reactors

Heat Exchangers for the Next Generation of Nuclear Reactors Xiuqing Li, Renaud Le Pierres and Stephen John Dewson Heatric Division of Meggitt (UK) Ltd., 46 Holton Road, Holton Heath, Poole,Dorset BH16