WATER-AMMONIA GAS ABSORPTION EFFICIENCY EVOLUTION ACC 0,53 ROBUR GET THE ABSORPTION TECHNOLOGY 0,71 ACF ACC/ACF Gas Fired Absorption Chiller 1968ARKLA (Arkansas Louisiana Gas Co.) introduces the first water-ammonia absorption units. From 1968 to 1991, more than 300,000 units are produced Robur Corporation was established to acquire absorption technology from Dometic, a company of Electrolux group The gas efficiency in absorption units was improved by 34%. Efficiency was becoming a crucial element. 08

ACC 0,53 0,71 ACF 08 ACF-HR Chiller with Heat Recovery 2002 The unit with heat recovery was developed and introduced to the market. The heat recovery for production of domestic hot water at temperature up to 85°C makes the unit very competitive: the total efficiency of the unit is up to 173%. ACF HR 1,73 WATER-AMMONIA GAS ABSORPTION EFFICIENCY EVOLUTION ROBUR GET THE ABSORPTION TECHNOLOGY

GAHP-W LB High Efficiency Geothermal Gas Absorption Heat Pump 2003Gas Absorption Heat Pump (GAHP-W LB) in water-water version was introduced to the market: a worldwide innovation. This GAHP version has put Robur into the high efficiency heating market with an efficiency much higher than electric compressor units ACC 0,53 0,71 ACF 08 ACF HR 1,73 0,54 1,39 W LB WATER-AMMONIA GAS ABSORPTION EFFICIENCY EVOLUTION ROBUR GET THE ABSORPTION TECHNOLOGY

GAHP-A High Efficiency Gas Absorption Heat Pump for Heating 2004 Air Source Gas Absorption Heat Pump for heating only was introduced to the market. One more worldwide innovation. The efficiency is higher than condensing boilers. A new opportunity for Robur with an exclusive product. It is the most efficiency unit in gas heating worldwide ACC 0,53 0,71 ACF 08 ACF HR 1,73 0,54 1,39 W LB 1,44 A WATER-AMMONIA GAS ABSORPTION EFFICIENCY EVOLUTION ROBUR GET THE ABSORPTION TECHNOLOGY

GAHP-W Gas Absorption Heat Pump for production of warm and cold water 2004a new Ground Source Heat Pump version, derived from W LB, was introduced to the market: the W. Another worldwide innovation for simultaneous use of hot and chilled water. A new market to discover for Robur ACC 0,53 0,71 ACF 08 ACF HR 1,73 0,54 1,39 W LB 1,44 A 2,17 W WATER-AMMONIA GAS ABSORPTION EFFICIENCY EVOLUTION ROBUR GET THE ABSORPTION TECHNOLOGY

GAHP-AR Gas Absorption Heat Pump for Heating and alternative Cooling 2005 First Heat Pump for heating and cooling, gas driven ACC 0,53 0,71 ACF 08 ACF HR 1,73 0,54 1,39 W LB 1,44 A 2,17 W 1,40 AR WATER-AMMONIA GAS ABSORPTION EFFICIENCY EVOLUTION ROBUR GET THE ABSORPTION TECHNOLOGY

ACC 0,53 0,71 ACF 08 ACF HR 1,73 1,39 0,54 W LBA 1,44 2,17 W 1,40 AR 2008 E3 Hydronic heating systems with modulating condensing absorption heat pump PROHydronic heating and cooling with absorption heat pumps, chillers and chiller-heaters E 3 A PRO A E 3 GSE 3 WS 1, ,74 PRO GS 0,50 1,50 PRO WS 2,30 WATER-AMMONIA GAS ABSORPTION EFFICIENCY EVOLUTION ROBUR GET THE ABSORPTION TECHNOLOGY