German American Chamber of Commerce PRESENTATION ON NOVEMBER 6th, 2008 Axel Popp www.rehau.de Constructcion Automotive Industry
WHO IS REHAU UNLIMITED POLYMER SOLUTIONS We are daily redefining the limits of the possible through polymer-based solutions Jobst Wagner, President of the Supervisory Board As a premium brand for polymer-based solutions, REHAU is an international leader in construction, automotive and industry. Initially, REHAU established itself successfully in Germany and the surrounding Western countries. This was followed by an early expansion in entire Europe and the expansion to North America as well as Asia and Australia. Today REHAU is represented worldwide on all continents in more than 50 countries. REHAU PBAU022 17.11.2008 Page 2
REHAU WORLDWIDE VERY CLOSE TO THE CUSTOMER REHAU is present at more than 170 locations with more than 14,000 employees. Their worldwide network together with the networks to suppliers, customers, research institutes and universities creates the best results through the flexible interaction between those most competent to perform the task at hand. REHAU PBAU022 17.11.2008 Page 4
REHAU IN NORTH AMERICA VERY CLOSE TO THE CUSTOMER REHAU North America operates 1 administrative office, 7 production plants and 15 sales offices in United States, Canada and Mexico with 1,400 employees. The administrative office is located in Leesburg, VA (Washington D.C. area) East Cost Sales Office is located in Los Angeles: REHAU Inc. 4254 Green River Road Corona, CA 92880-1669 Contact: Sales Director Joe Lepire 951-549-9017 joe.lepire@rehau.com REHAU PBAU022 17.11.2008 Page 5
STRATEGIC BUSINESS UNITS THE REHAU BUSINESS UNITS CONSTRUCTION AUTOMOTIVE INDUSTRY - Window and curtain walling technology - Building technology - Civil engineering - Exterior body parts - Water and air management systems - Seals - Furniture - Household appliances - Hoses/tubings - Industrial developments REHAU PBAU022 17.11.2008 Page 6
THE STRATEGIC BUSINESS UNIT CONSTRUCTION THE DIVISIONS Window and curtain walling technology REHAU supplies specialist companies in window and curtain walling construction with market-driven programs and services Building technology REHAU develops and produces integral and complete system solutions around the topics: heating/cooling, gas/water installation, industrial pipe/compressed air networks and electrical installation Civil engineering is an innovative system supplier for water management, energy management, communications engineering, earth moving and foundation work REHAU PBAU022 17.11.2008 Page 7
The three pillars of energy efficiency 1. Reducing Energy Losses: - High performance window, door and curtain walling systems 2. Efficient energy distribution: - Panel floor and wall heating - concret core activation - Panel wall and ceiling cooling 3. Provide renewable energies: - Geothermal for heating and cooling - Solar thermal for heating - Biomass/Biogas: heat and power production REHAU PBAU022 17.11.2008 Page 8
The dream team of energy efficiency: geothermal and panel heating 6,0 5,5 5,0 4,5 4,0 3,5 3,0 CCA Panel heating Radiators - Panel Heating: low flow temperatures - Panel Cooling: high flow temperatures Heat Pump COP Little temperature difference between soil and flow High heat pumpe COP (coefficient of performance: relation between energy output and energy input) 2,5 3,0 10 20 30 40 50 60 Temperature difference between heat source and heat sink [K] REHAU PBAU022 17.11.2008 Page 9
Geothermal for heating and cooling Soil acts as heat source and heat sink investment in geothermal installation and heat pumps to be used for heating and cooling heating : heat transfer into the buidling cooling : heat transfer into the soil Jan Apr Jun Sep Dez (northern hemisphere) REHAU PBAU022 17.11.2008 Page 10
Material matters! 9000 Weakness of Polyethylen: slow crack growth Criteria : FNCT (full notch creep test) 8000 7000 6000 5000 FNCT nach ISO 16770 Result : PE100 fails after some hundred test hours No slow crack growth with PE-Xa! 4000 3000 2000 1000 0 2000 100 10 200 80 C 80 C 80 C PE 80 PE 100 PE-X REHAU PBAU022 17.11.2008 Page 11
Material matters! PE-HD failure mode: PE-Xa to be used for geothermal installations Major European Utilities use PE-Xa for Natural Gas and Water supply pipes! REHAU PBAU022 17.11.2008 Page 12
Material matters! Weakness of PE-HD: limited resistance to punctual loads Punctual load Stress distribution Resulting cracks PE-HD: Crack initiation at the inner surface adjacent to the puntual load Failure following slow crack growth PE-Xa is resistant to punctual loads! REHAU PBAU022 17.11.2008 Page 13
Material matters! Geothermal probes (vertical heat exchangers) are never postioned in the borehole center but always touch the borehole wall. Result: punctual loads! Additionally, significant temperature fluctuations resulting in heat pump cycles have to be taken into account. Resulting expansion forces: up to 800N (160 pounds)! bis 800N REHAU PBAU022 17.11.2008 Page 14
Engineering matters! State of the art: welded probe tip Joints always are potential failure sources Failures may happen even after pressure test : REHAU PBAU022 17.11.2008 Page 15
Engineering matters! RAUGEO probe PE-Xa one pipe, no joints utmost robust PE-Xa material slim polyester reinforcment of the probe tip - protection during probe insertion - cross-wise coupling for easy insertion - in-mould weight coupling With US IGSHPA approval (international ground source heat pump association) REHAU PBAU022 17.11.2008 Page 16
Material matters! PE-HD PE-Xa Excavated material mostly has a higher heat conductivity than sand Requires sand bedding Can be buried in excavated material REHAU PBAU022 17.11.2008 Page 17
Material matters! PE : to be used up to 100 F PE-X: to be used up to 200 F!. PE-Xa allows the save coupling of geothermal and solar thermal! Thermal regeneration of the soil by surplus solar heat No stagnation of the solar panels in case of full buffer tank REHAU PBAU022 17.11.2008 Page 18
Engineering matters: helical heat exchangers New REHAU products: Helical probe (if drilling is not permitted or if horizontal space is limited) REHAU PBAU022 17.11.2008 Page 19
Engineering matters: energy piles If pillars are required for static reasons anyway Current project: new main Berlin airport (1024 piles) REHAU PBAU022 17.11.2008 Page 20
Air ground heat exchangers Principle: Inlet air passes a buried pipe system Result: 95 F (summer) cooling 60 F 30 F narrowed temperature profil heating Saving of cooling energy Saving of heating energy 5 F (winter) REHAU PBAU022 17.11.2008 Page 21
Engineering matters: antibacterial inner layer Number of microbes Standard pipe Antibacterial inner layer Source: Results Institut Fresenius REHAU PBAU022 17.11.2008 Page 22
Air ground heat exchangers TESCO ZDZIESZOWICE, Poland Heating energy reduction: 58% Potential cooling energy reduction: 43% AWADUKT THERMO DN 200 20 pipes @ 35m AWADUKT THERMO DN 500 Header pipes REHAU PBAU022 17.11.2008 Page 23
Study on the performance of Air Ground Heat Exchangers in the US HVAC concepts: a) full air handling b) CCA and supporting ventialtion Simulation based on true TRY climate data REHAU PBAU022 17.11.2008 Page 24
Simulation results for Full Air Handling + AGHE Energy Savings Air Treatment - Toronto - reference case without AGHE with AGHE Cooling Heating Cooling Heating Fan Cooling Energy Saving Heating [kwh] [kwh] [kwh] [kwh] [kwh] [kwh] % [kwh] % Jan 0 6.552 0 4.531 188 1.833 28% Feb 0 5.594 0 3.981 163 1.450 26% Mar 0 5.174 0 4.063 179 932 18% Apr 189 2.709 14 2.091 172 89 47% 532 20% May 341 1.967 27 1.418 190 219 64% 454 23% Jun 4.133 1.360 40 942 176 4005 97% 330 24% Jul 5.933 1.810 72 656 187 5768 97% 1.061 59% Aug 5.545 1.477 157 755 193 5291 95% 625 42% Sep 1.682 1.207 113 859 166 1486 88% 265 22% Oct 224 1.751 0 1.360 188 130 16% 297 17% Nov 0 3.693 0 2.308 179 1.205 33% Dec 0 5.412 0 3.151 171 2.090 39% Sum 17.808 37.560 395 26.815 2.153 16.989 95% 11.074 29% REHAU PBAU022 17.11.2008 Page 25
Office buidling Kaisersesch, Germany since 2003 in operation 25000ft² concrete core activation 32 REHAU RAUGEO probes PE-Xa à 300ft Operation cost for heating+cooling: 5800 /Jahr 21 kwh/m²a for heating + cooling REHAU PBAU022 17.11.2008 Page 26
BEISPIEL ENERGY-EFFICIENT ERDWÄRMEKOLLEKTOR CONSTRUCTION Adidas Factory Outlet, Herzogenaurach Horizontal collectors for heating+cooling underneath the building REHAU PBAU022 17.11.2008 Page 27
Lu-teco: Office Building acc to Passive-House Standard 11.2500 ft² total (9.8750 ft² of which heated and cooled) Heating demand: < 15 kwh/(m²a) HP capacity: 120 KW (35 tons) Concrete Core activation: ca. 120.000 ft PE-X RAUGEO probes Xa : 39 @ 300ft REHAU PBAU022 17.11.2008 Page 28
Seasonal energy storage Underground Thermal Storage at Okotoks, Canada: 144 RAUGEO probes @ 120ft Seasonal energy store for surplus solar thermal heat for a dwelling of 52 family homes. REHAU PBAU022 17.11.2008 Page 29
State of the art office building Office Building Seekamp, Hamburg REHAU Ploytec 50 Curtain walling system REHAU Thermo Design 70 window system Concrete Core Activation: REHAU PBAU022 17.11.2008 Page 30
THANK YOU FOR YOUR ATTENTION BERLIN, NOVEMBER 6th, 2008 www.rehau.de Constructcion Automotive Industry