ECOFOREST GEOTERMIA www.ecoforest.es www.ecoforest.es comercial.geotermia@ecoforest.es Ground/Air Source Heat Pumps ecoGEO
ECOFOREST GEOTERMIA New company, 2010, Ecoforest Geotermia � Manufacture of ground/air source heat pumps � More than 7 years of research and development � University of Vigo
HEAT PUMPS Heat pumps, the future energy technology in Europe ► Key technology for the future European Energy Goals European Directive, 20/20/20, 2020 20% renewable energies 20% CO 2 emissions reduction 20% systems efficiency increasing 20% systems efficiency increasing Europ. Direct. 2050, Nearly Net Zero Energy Buildings (nZEB) ► Heat pumps, the key technology for heating and cooling. ► Great cost savings, reduction of the energy consuption up to 80% ► Green technology, reduction of CO 2 emissions
STANDARD HEAT PUMPS TECHNOLOGY � On/off compressors, NO INVERTER, fixed rotation velocity - The Seasonal Performance Factor (SPF) decreases significantly because the heat pump can’t adapt to the demand variations and the outlet temperature of the heat pump needs to be higher - A buffer tank and at least one additional shunt group (circulation pump + mixing valve) are needed increasing considerably the cost and the complexity of mixing valve) are needed increasing considerably the cost and the complexity of the installation - Besides the buffer tank means a loss of efficiency throughout the year, since its temperature is higher (winter) or lower (summer) than the ambient temperature
STANDARD HEAT PUMPS TECHNOLOGY � On/off compressors, NO INVERTER, fixed rotation velocity ecoGEO Installation Traditional Installation Additional shunt group Buffer tank Installation overcost (Buffer tank + shunt group) : 1.500 ̴2.500 €
STANDARD HEAT PUMPS TECHNOLOGY � On/off compressors, NO INVERTER, fixed rotation velocity - In many cases an oversizing, and therefore an overcost, of the brine system is needed since the thermal power needed does not match any commercial value and installing a higher capacity heat pump is required PRACTICAL EXAMPLE PRACTICAL EXAMPLE � Thermal power needed: 11,2 kW � Thermal power needed: 11,2 kW � Installed power with traditional heat pump (closest commercial value that meets): 13 kW � Installed power with ecoGEO heat pump: 11,2 kW Dimensioning of the brine system Cost of the brine system 1- Installation with traditional heat pump 1- Installation with traditional heat pump m brine system = ((13-(13/5))/50)*1000= 208 m Cost= 208 m * 35 €/m= 7.280 € 2- Installation with ecoGEO heat pump 2- Installation with ecoGEO heat pump m brine system = ((11,2-(11,2/5))/50)*1000= 179 m Cost= 179 m * 35 €/m= 6.265 € m brine system = ((P-(P/COP))/P EE )*1000 Overcost in the brine system : 1.015 € P EE ≡ Especific extraction power [W/m] Drilling cost considered : 35 €/m
STANDARD HEAT PUMPS TECHNOLOGY � External modules for cooling - Hydraulic inversion - Significant increase in the cost of equipment and installation (2.500 ̴3.500 €) - Much more complex installations - In many cases brine is also necessary in the heating/cooling circuit
STANDARD HEAT PUMPS TECHNOLOGY � External modules for cooling Traditional Installation ecoGEO Installation Additional shunt group Buffer tank External module for cooling Installation overcost (Buffer tank + shunt group + module for cooling) : 4.000 ̴6.000 €
STANDARD HEAT PUMPS TECHNOLOGY � Thermostatic expansion valves - Much worse control of the refrigerant flow - As a consequence, bigger overheating degrees bigger electrical consumption for the compression and worse COP Electronic expansion valve log P Thermostatic expansion valve 3=3’ 2 2´ Pc h 2’ -h 1’ > h 2 -h 1 W comp ’ > W comp COP’ < COP Pe 1’ 4=4’ 1 h h 2 -h 1 h 2’ -h 1’
STANDARD HEAT PUMPS TECHNOLOGY � Circulation pumps, fixed velocity and less power - Unable to adapt to demand variations bigger electrical consumption - Higher differences of temperature between the inlet and outlet of the heat exchangers lower evaporation pressure and higher condensation pressure worse COP Variable speed and high power circulation pumps log P log P Fixed speed and low power circulation pumps Fixed speed and low power circulation pumps 3=3’ 2´ Pc’ h 2’ -h 1’ > h 2 -h 1 2 Pc W comp ’ > W comp 4 1 Pe COP’ < COP Pe’ 1’ 4’ h h 2 -h 1 h 2’ -h 1’
STANDARD HEAT PUMPS TECHNOLOGY � Refrigerant R407C - Much more zeotropic than R410A the temperature is not constant during evaporation and condensation processes lower efficiency in the heat exchangers worse COP - In case of leakage of refrigerant in the circuit to completely drain and refill the circuit is necessary the circuit is necessary
STANDARD HEAT PUMPS TECHNOLOGY � Only 3-phase power supply for higher power models - Less flexibility - To negotiate a new contract with the electric company is necessary � Big peaks of consumption when the compressor starts � Big peaks of consumption when the compressor starts (large starting currents) - Oversized electrical installations - Great effect on the SPF
ECOFOREST TECHNOLOGY � Improved technology from the European manufacturers Inverter technology from Copeland Driver + Scroll compressor 1 st and unique European manufacturer � Electronic expansion valve, all models � Electronic expansion valve, all models � Variable speed circulation pumps, Class A, integrated � Micro-PC, control based system � Refrigerant R410A � Our own control strategies, our own control software � 1-Phase or 3-Phase power supply � Soft starts
ECOFOREST TECHNOLOGY Main components from well-know manufacturers worldwide � Inverter technology, scroll compressor, from COPELAND � Plate heat exchangers, ALFA LAVAL � Electronic expansion valve, CAREL � Control implementation μPC, CAREL � Variable speed pumps Class A, WILO � Auxiliary components, DANFOSS � Domestic hot water tank and coil, Stainless Steel 316L
ecoGEO INVERTER TECHNOLOGY Award winners of the year's best technology in NEW YORK AHR EXPO 2014
ecoGEO INVERTER TECHNOLOGY � New Inverter technology from Copeland - Driver + Copeland scroll variable speed compressor - rpm range, from 1800 to 7000 - 2 driver-compressors, 3 to 12 kW and 5 to 22 kW - Electric power supply, 1-phase, 3-phase - Possibility to limit the thermal power and the electrical consumption - No need for soft starters, 1800 rpm. - No intensity peaks -
ecoGEO INVERTER TECHNOLOGY VS ecoGEO Heat Pump Traditional Heat Pump Adaptation of the heat pump to the Adaptation of the installation to the installation heat pump DHW POOL 4 kW HEATING COOLING 8 kW 12 kW 6,5 kW Inverter technology allows adapting the power of the heat pump in each of the services SEVERAL HEAT PUMPS IN ONE The DIRECT connection to the different services ensures minimum outlet temperatures, maximum efficiency and lower installation costs
ecoGEO INVERTER TECHNOLOGY � Cooling of the Inverter by heating system. Our own design - No fan needed, lower electrical consumption - No apertures in the case, lower noise level - Injection of the heat recovered from the Inverter into the heating system, increase of the SPF system, increase of the SPF
ecoGEO TECHNOLOGY � Electronic expansion valve - Controller integrated into μPC, Carel sensors - Accurate and quick control of superheating - Accurate control of mass flow to evaporator - Improvement of evaporator efficiency - Quick response to load changes - Mainly important with inverter - No need for shut-off solenoid valve
ecoGEO TECHNOLOGY � Plate heat exchangers - Condenser, asymmetric plates channels - Evaporator, “ Equalancer” distribution system
ecoGEO TECHNOLOGY � Speed controlled circulation pumps - Speed range, 1400 to 4850 rpm - High Power, 11 mwc - Maximum flow rate, 4500 l/h - Energy efficiency, Class A - Energy efficiency, Class A - Integrated in brine and heating circuits - Control of temperature difference in evaporator (3 ⁰C) and condenser (5 ⁰C)
ecoGEO TECHNOLOGY � μPC based Control system. Our own control strategies - Our own control strategies and software
ecoGEO TECHNOLOGY � Simple user interface. Carel screen - User and installer access levels - Multilanguage support
ecoGEO TECHNOLOGY � Instrumentation and control - Temperature sensors • Refrigerant suction and discharge • Supply/return brine and heating circuits • Inverter plate and motor wiring • Inverter plate and motor wiring - Pressure sensors • Refrigerant suction and discharge • Brine and heating dircuits - Electric power, Inverter - Compressor torque, maximum torque
ecoGEO TECHNOLOGY � Power, COP, SPF and energy counters - Instantaneous • Electric power, measured • Heating/cooling power, calculated • COP • COP - Daily, monthly and yearly energy counter • Electric energy, measured • Heating / cooling energy, calculated • SPF
ecoGEO TECHNOLOGY � Compact Unit, “all in one concept” - Integrated brine and heating circulation pumps - Integrated brine and heating expansion vessels - Integrated security valves - Integrated flexible stainless steel hoses - Integrated drainage valves
ecoGEO TECHNOLOGY � Quiet, sound insulation, on the case and the compressor
ecoGEO TECHNOLOGY � Vibrations protection - Stainless steel hoses
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