ROBUR PRESENTATION GAS ABSORPTION HEAT PUMPS AND CHILLERS FOR HIGH EFFICIENCY COMFORT SUBJECTS:

1. ROBUR PRESENTATION • GAS ABSORPTION HEAT PUMPS AND CHILLERS FOR HIGH EFFICIENCY COMFORT • SUBJECTS: • ROBUR: THE COMPANY • ENERGY EUROPEAN TRENDS AND REGULATIONS • ROBUR ABSORPTION TECHNOLOGY • ROBUR STRATEGY ON THE HEATING AND COOLING MARKET • ROBUR PRODUCTS • - GAS ABSORPTION HEAT PUMPS • - GAS ABSORPTION CHILLERS • CONCLUSIONS

2. ROBUR: THE COMPANY

3. Company Profile Founded in 1956 Corporate Headquarter: Robur S.p.A. Zingonia/Verdellino (BG) – Italy 300,000 sq. ft (=28,000 sq. mt.) Robur Corp. Evansville, IN USA Robur GmbH Friedrichshafen Germany Annual Expense in R.& D.: 7% of Sales Business presence: world-wide (more than 50 countries) ROBUR MISSION Robur is dedicated to dynamic progressionin research, development and promotion of safe, environmentally-friendly and energy-efficient products,through the commitment and caringof its employees and partners.

4. Awards and Certifications

5. Quality Awards & Certifications May 2001First company in Europe in air conditioning business to get ISO 9001:2000 (Vision 2000) certification Nov 2001First Prize “Premio Qualità Italia” (Italian Quality Award) Oct 2003Special Prize “Leadership and Constancy of Purpose” of European Quality Award

6. Quality Awards & Certifications Jun 2005CSA Certification Jul 2005ASME Certification Dec 2005ISO 14000 Certification Jan 20062Honorable Mentions by ASHRAE

7. Quality Awards & Certifications www.vde.com VDE - Association for Electrical, Electronic & Information Technologies VDE Testing and Certification Institute is one of the largest technical and scientific associations in Europe with more than 34,000 members. VDE company is a European leader in providing quality testing for various products, components and systems. VDE test mark is recognized worldwide. February 2008 The performance of Robur units have been tested by the VDE Testing and Certification Institute.

8. Quality Awards & Certifications www.dvgw.de/english-pages DVGW GmbH - German Technical and Scientific Association for Gas and Water DVGW GmbH is the largest gas and water industry certification entity in Europe, covering all of the certification procedures required in the gas and water markets. February 2008 The performance of Robur units have been tested by DVGW GmbH.

9. ENERGY TRENDS AND REGULATIONS

10. TECHNOLOGY TRENDS ARE MOVING ACCORDINGLY • INSULATING SOLUTIONS IMPROVING ENERGY PERFORMANCE OF THE BUILDINGS 2.LOW TEMPERATURE HEATING DISTRIBUTION SYSTEMS (IN-FLOOR AND IN-WALL RADIANT SYSTEMS), SOMETIMES ALSO USED FOR SUMMER COOLING 3. CENTRAL HEATING WITH ENERGY METERING SYSTEMS 4. USE OF RENEWABLE ENERGIES 5. HEAT PUMPS AND REVERSIBLE HEAT PUMPS 6. MORE ATTENTION ON HEATING EFFICIENCY AND COST COMPARED TO COOLING 7. NEED OF INTEGRATED SOLUTION (HEATING, COOLING & DHW)

11. European regulations and directives are focusing on energy efficiency and carbon reduction ECO-BOILER: heating systems labeling ROBUR

12. Generation Efficiency Distribution Efficiency Emission Efficiency Regulation Efficiency GLOBAL Efficiency Hydronic heating integrated system components

13. Multi Family Houses Detached house Industrial & Commercial School and Public Buildings Applications

14. ROBUR STRATEGY ON THE HEATING AND COOLING MARKET

15. HEAT PUMPS MARKET IS GROWING FAST • Heat pumps are energy efficient • A significant part of the energy is recovered from renewable sources like the geothermal heat or heat from the external air • Heat pumps can be advantageously coupled with low temperature distribution systems • Reversible heat pumps can also provide summer cooling • The investment cost is quickly paid back by savings on energy bills • Heat pumps increase the estate value, thanks to higher Energy Certification ranking

16. …BUT • Heat pumps consume a lot of electrical energy and often need to increase the electrical power capacity of the building • Air heat pumps have very low heating performance when outside temperature drops, which means when you need it more! It is often necessary to install back-up boilers or resistors • Geothermal heat pumps imply a very high cost for geothermal probes • Most of electrical heat pumps cannot provide Domestic Hot Water • Most of electrical heat pumps cannot produce hot water higher than 55°C, which means they cannot be used to refurbish existing buildings with traditional distribution systems (radiators) ROBUR has the solution: GAS ABSORPTION HEAT PUMPS

17. ROBUR ABSORPTION TECHNOLOGY

18. ROBUR GAS ABSORPTION TECHNOLOGY • WATER-AMMONIA ABSORPTION CYCLE RECOVERING HEAT FROM OUTSIDE AIR AS LOW AS -20° AND/OR COOLING WITH EXTERNAL AIR UP TO +45° • DIRECT PRIMARY ENERGY INPUT THROUGH PRE-MIXED MULTIGAS BURNERS – NATURAL GAS / GPL • EXTREMELY LOW ELECTRICAL POWER CONSUMPTION (LESS THAN 0,9 kW FOR 35kW OF HEATING OUTPUT)

19. USEFUL EFFECT PRIMARY ENERGY ABSORPTION HEAT PUMP COMPRESSION HEAT PUMP HEAT HIGH PRESSURE condenser GAS generator COMPRESSOR ELECTRICITY PUMP evaporator LOW PRESSURE Energy recovery from air or ground HEAT absorber HEAT Absorption heat pump working principle

20. ROBUR PRODUCTS

21. GAS FIRED ABSORPTION HEAT PUMPS FOR HEATING AND COOLING USING RENEWABLE ENERGIES GAS FIRED REVERSIBLE ABSORPTIONHEAT PUMP FOR ALTERNATIVE HEATING OR COOLING GAHP PRO Line AR GAS FIRED ABSORPTION HEAT PUMP FOR HEATING ONLY GAHP PRO Line A GAS FIRED ABSORPTION HEAT PUMP ENGINEERED FOR GEOTHERMAL ENERGY USE GAHP PRO Line GS GAS FIRED ABSORPTION HEAT PUMP FOR CONTEMPORARY PRODUCTION OF HOT AND CHILLED WATER GAHP PRO Line WS

22. GAS FIRED ABSORPTION CHILLERS FOR COOLING WITH LOW ELECTRICAL CONSUMPTION GAS FIRED ABSORPTION CHILLER WITH HEAT RECOVERY ACF-HR GAS FIRED ABSORPTION CHILLER FOR INDUSTRIAL USE ACF-TK GAS FIRED ABSORPTION CHILLER ACF GAS FIRED ABSORPTION CHILLER FOR NEGATIVE WATER TEMPERATURES ACF-LB GAS FIRED ABSORPTION CHILLER FOR HIGH EXTERNAL AIR TEMPERATURES ACF-HT

23. GAS-FIRED ABSORPTION UNITS FOR HEATING, AIR CONDITIONING AND DHW PRODUCTION PRO Linea SYSTEM GAS FIRED PRODUCTS FOR HEATING AND COOLING USING RENEWABLE ENERGIES WITH LOW ELECTRICAL CONSUMPTION GAS-FIRED CONDENSING BOILER AND CONDENSING BOILER LINK FOR HEATING PRO AY Condensing Line

24. GAS ABSORPTION HEAT PUMPS

25. GAHP Pro GS: Geothermal applications • Power up to 42,6 kW • Up to 170% efficiency • Indoor or outdoor installation • Borehole length reduction up to 70% • Very low electrical consumption

26. GAHP Pro WS: Simultaneous production of hot/cold water • Power up to 42,6 kW • Up to 244% efficiency • Indoor or outdoor installation • Very low electrical consumption

27. GAHP Pro A: Air source applications • Output up to 38,4 kW • Up to 165% efficiency • Outdoor installation • Very low sensitivity to air temperature • Very quick defrosting process without heat supply interruption Puissance thermique

28. GAHP Pro AR: Alternate Heating or Cooling • Heating output up to 35,3 kW • Cooling output up to 16,9 kW • Up to 140% efficiency • Outdoor installation • Very low electrical consumption

29. GAS ABSORPTION CHILLERS

30. ACF ABSORPTION CHILLERS PerformanceChilled water down to 3 °C for air conditioning. When the unit operates for more than 3,000 hours a year, a special unit type for process applications is recommended. CapacityCooling outputs from 17.7 to 88.6 kW. Main applicationsHydronic air conditioning

31. Absorption chiller with heat recoveryACF HR PerformanceChilled water down to 3 °C. When the chiller is operating, free hot water is recovered up to 12 heating kW with outlet hot water temperature up to 80 °C. CapacityCooling outputs from 17.7 to 88.6 kW. Main applicationsHydronic air conditioning with large heat recovery for domestic hot water use orpost-heating applications.

32. GAS CONDENSING BOILERS

33. Gas-fired heating: Multi AY Heating modular unitsAY00-120CONDENSING Gas-fired floor-standing condensing boiler and boiler links for external or internal installation. PerformanceHot water up to 85°C. Suitable for insertion with GA units to complete heating installation or for dedicated remote domestic hot water production. CapacityHeating outputs from 34,4 to 172 kW. Efficiency: from 98,6% to 107.5%; 104,6% (50°C - 30°C) Main applicationsHeating applications;Domestic Hot Water production.

34. SYSTEMS

35. GAHP Pro SYSTEM: Gas-fired absorption units for heating, air conditioning and DHW production Ideal for industrial, commercial and accommodation use

36. GAHP Pro SYSTEM: Gas-fired absorption units for heating, air conditioning and DHW production Ideal for industrial, commercial and accommodation use • Gas Absorption heat pump unit for heating, cooling and • DHW production throughout the year. • It is a customized combination of Robur: • Heat Pumps • Chillers • Condensing Boilers • built in a unique link structure which includes: • Hydraulic connections & pumps • Electrical wiring connections • Possible integration with solar panels • System Control • DHW tank & HW buffer

37. CONCLUSIONS

38. FEATURES AND ADVANTAGES OF GAS ABSORPTION MACHINES • VERY HIGH ENERGY EFFICIENCY (UP TO 170%), THANKS TO THE USE OF GAS AND RENEWABLE ENERGIES • INCREASE IN THE VALUE OF BUILDINGS BECAUSE OF HIGH EFFICIENCY RANKING IN ACCORDANCE WITH CURRENT AND FUTURE EUROPEAN DIRECTIVES • SUITABLE FOR HEATING, COOLING AND DHW PRODUCTION • VERY LOW ELECTRICAL CONSUMPTION • AIR MACHINES ARE LOW SENSITIVE TO OUTDOOR TEMPERATURE • GEOTHERMAL MACHINES ALLOW REDUCTION OF BOREHOLES UP TO 70% • SUITABLE FOR NEW BUILDINGS OR REFURBISHMENT (WATER OUTLET TEMPERATURES UP TO 65°C)

39. ADDITIONAL FEATURES AND ADVANTAGES • REDUCED MAINTENANCE: NO COMPRESSOR AND LOW NUMBER OF MOVING MECHANICAL PARTS; LONG LIFE CYCLE AND HIGH RELIABILITY • HYDRONIC DISTRIBUTION ALLOWS FOR A BETTER COMFORT INSIDE BUILDINGS AND IS A PREFERRED INSTALLATION STANDARD • NO NEED TO REPLACE REFRIGERANT- CONSISTENT PERFORMANCE DURING THE ENTIRE LIFE OF THE SYSTEM • NO WATER CONSUMPTION: NO NEED OF EVAPORATIVE TOWER • MODULAR UNITS: LINK WITH UP TO FIVE UNITS MANAGED BY A DIGITAL CONTROL PANEL