geoKOAX
- 1. Heating and cooling of residential, commercial and industrial properties with close-to-surface, climate-friendly geothermal energy Geothermal energy from geoKOAX for cost-effective, efficient interior climate management – even in areas with drilling depth restrictions – green, efficient, anywhere
- 2. Geothermal Energy is the future inexhaustible energy from the earth, for the earth A+ A B C D E F G H > 250175 200 2251501251007550250 CHP Fernwärme wood pellet heating district heating gas heating Why use geothermal energy? Unlike conventional energy, geothermal energy does not need to be generated at high cost and with high CO2 emis- sions – it already exists, free and inexhaustible. It is an essential component for achieving public policy climate goals. If fossil fuels are used, legal require- ments for new construction and retrofitting of buildings can only be met through higher invest- ments. Geothermal energy is therefore the future of heating and cooling. inexhaustible energy from the earth, for the earth Your advantages of our technology up to 70% lower operating costs Geothermal energy is available free of charge. By using geoKOAX probes, the running phases of the heat pump are minimized which guarantees you a high-performance climate management system with up to 70% lower operating costs. 1. rapid amortization Up to 65% lower drilling depths compared with single probe systems (and up to 60% compared with dou- ble U-bendsystems), extensive incen- tives in most countries (tax credit, subsidies or equivalent) along with minimal operating costs allow for a rapid return on investment. A geo- KOAX geothermal system significantly increases the value of your property. 2. highest energy efficiency labels Heat pumps and heat pump sys- tems are the only heating / cooling systems that will consistently achieve the highest green label classes A+ to A+++ of the EU Energy Label mandatory by September 2015. These Energy Labels are the most stringent worldwide. 3. Innovative Heat Exchanger Technology The next generation of energy production The patented geoKOAX heat exchanger technol- ogy enables the use of close-to-surface geother- mal energy with drilling depths as low as 17ft / 5m. This not only reduces investment costs signif- icantly, but also allows planners and developers to adhere to official drilling depth limits. The technological advantage: geoKOAX achieves up to 65% more power in RT per probe meter. We can help when conventional probe systems fail, for example, when facing unexpected geo- logical challenges (e.g. aquifers). geoKOAX sys- tems work in difficult environments. Our probes are exceptionally powerful and make geothermal energy possible almost anywhere. summer – cooling winter – heating reliable planning Geothermal energy is now possi- ble anywhere: Due to the low dril- ling depths required, geoKOAX can be deployed in sensitive areas with drilling depth restrictions, as well as on smaller properties such as urban areas with high energy requirements – reliably and predictably. 4. close-to-surface, safe Risk-free and non-polluting geo- thermal energy: We eliminate con- cerns about possible breaches of aquifers and protect the groundwa- ter in geologically sensitive areas.. 5. sustainable and environment-friendly Geothermal energy is the most envi- ronment-friendly form of heating and cooling. With the use of bio- electricity, operation of a ground source heat pump can even be CO2-free. In addition, geoKOAX uses organic heat transfer fluids from renewable resources (non-edible corn) with additives approved food use. 6.
- 3. geoKOAX The innovation in geothermal energy Reliable mono valence for heating and cooling geoKOAX supplies the foundation for a monovalent heating and cool- ing system: based on the high-per- formance heat exchanger tech- nology, the heat pump supplies heating and cooling energy as well as domestic hot water. As an alternative, geoKOAX can of course also be used to supplement existing heating and cooling sys- tems on a multivalent basis. As a source to cover the base heating and cooling requirements of a build- ing, the geoKOAX system can sub- stantially reduce the demand from other heating and cooling sources such as a gas boilers and chillers. Complete geothermal solutions from a single source With our network of professionals and a highly qualified team, we offer you complete solutions related to our patented technology for your project. During the planning and design phase, we use aggregated test re- sults from comparable geoKOAX systems, supported by expert knowledge and professional proj- ect management. Thus, we ensure an optimal technical design of the geothermal heat source and the heat pump as well as the peripheral components based on the heating and cooling requirements of each building. Each geoKOAX system is accurately simulated and individu- ally customized. Our experienced, certified partner companies are tasked with the drilling, installation and the filling of the probes and the backfilling and compressing compaction of the borehole field. All external installation work is carried out up to the inner side of the base- ment foundation wall and subject to quality assurance testing. In addition, we offer a geothermal monitoring system (profitable from around 80kW) for the adjustment and con- stant optimization of your system in close coordination with the heating installer or contractor of your choice Thus, geoKOAX makes geothermal energy reliable and exceptionally cost-effective. Geothermal energy – a reliable form of energy geoKOAX Technical advantages No frost protection requirements The geoKOAX probe fields are designed to operate in the positive temperature range. Therefore, it is possi- ble to dispense with the usual high concentration of anti-freeze in favour of a higher viscosity and ther- mal conductivity. The well-known problem of conventional probes with freeze-thaw cycles of the backfilling is thus elimi- nated. Volume The geoKOAX heat ex- changer system features 13 times as much carrier fluid volume as a single U-bend system. The coaxial tube serves to store heat. This permits a precise release of the re- quired energy at a constant temperature and also longer resting periods of the heat pump. Low borehole resistance The concentric orientation of the geoKOAX coaxial tube ensures a uniform dis- tance from the soil and thus a better energy transmis- sion compared with con- ventional probes. The significantly lower bore- hole resistance results in an energy absorption that is at least more than twice as high. Contact surface area The geometric concept of the geoKOAX system means that the contact surface area for geothermal heat is twice as large as that of conventional geothermal probes. As a result of the smooth coating, the space between the probe and the soil is even. This ensures a homogeneous filling of the annular space without any air pockets. Turbulence The core of the geoKOAX heat exchanger technology is passive turbulence. The continuous change from laminar flows to turbulent flows increases the heat transfer coefficient by 20% in the case of a 9ft 10in / 3m probe and by up to 100% in the case of a 32ft 9in / 10m probe. (Source: RWTH (Rheinisch Westphalian Technical University) Aachen).
- 4. Construction of a new residential and commercial development with climate protection features 67 condominiums and commercial units in an area with drilling depth restrictions (190 kW, 54 RT)) • The inner-city housing development completed in 2014 has been recognized by the Energy Agency of North-Rhine-Westphalia (a large state in Germany) as "climate protection development" and received state funding. • With drilling depth restriction of 31m and a lim- ited plot size, geoKOAX was the only probe sys- tem with a guaranteed required heat output of 190 kW (54 RT). • The use of geoKOAX geothermal probes allow- ed for a reduction of the drilling depth by 35% compared to the original design with duplex probes. This led to a saving of 4,920 of feet drilled (Source: tewag GmbH), and around 25% of drilling costs. Troisdorf, Germany geoKOAX – other reference projects Low-energy family home, Vaihingen Points heating, Farchant/Zugspitze Historic landmark building, Cologne New office building in area with drilling depth restriction (14 kW), Kamp-Lintfort Probe field below building, St. Augustin, 88 kW at drilling depth restriction of 23 m Residential develpoment with drilling depth restriction, Kirchseeon Upgrade of an apartment block in an area with drilling depth restrictions (100 kW, 28,5 RT) Lübeck, Germany • As part of the complete retrofitting of the apart- ment block dating from the 1960’s, the existing oil heating was replaced with a geothermal heating system. It fully meets heating requirements of 100 kW (28,5 RT). • The redevelopment plan initially focused on du- plex probes. Since the area lies in a water protec- tion zone with a drilling depth restriction of 128ft / 39m, the system had to be changed: The required heat output could only be guaranteed with geoKOAX probes – with a reduction of 47% in drilling length and 36% lower investment costs. • The conversion to geothermal energy has resulted in annual savings of 69% in terms of CO2 emis- sions and 73% in terms of operating costs. • The system generated a positive return on investment after just 5 years! Industrial project with passive cooling, Salching Hospital Düren, 243 kW in area with drilling depth restriction, Rhine area Hospital project, system change, Rheine Drinking water protection area Chiemsee, first geothermal system on the island Fraueninsel 2 large projects in NL, Urmond and Dekkerswald Residential development with 24 houses of 8 kW, Hattingen
- 5. Please get in touch with us! We look forward to talking with you: We are happy to tell you more about our reference projects. Our team of experts draws on experience gained from over 1,000 projects installed in Germany, Austria, Switzerland, the Netherlands, Serbia, Denmark and the Czech Republic. Whether the project is a new build- ing or energy-efficient retrofitting of existing buildings: we work hand in hand with your MEP Planning Engi- neer and your heating installer to provide you with predictable, reliable and highly efficient geothermal en- ergy from geoKOAX. GeoKOAX is partnering with Clem- son University, South Carolina, for continued research and develop- ment of coaxial geothermal systems. The collaboration extends to the De- partments of Mechanical Engineer- ing, Materials Science and Engineer- ing and the School of Architecture. The research focuses on technical analysis of system performance, design for manufacturing, and optimization. Energy efficiency, long term durability, and environmental impact are eval- uated through heat transfer numer- ical modeling and laboratory and full-scale experimental testing. geoKOAX GmbH North America Mark Metzner Phone: (604) 866 – 3595 mark.metzner@geokoax.com www.geoKOAX.com