Teknologi for et bedre samfunn Svenska KVP 2016, Gøteborg, 2016-10-21 1 Høytemperatur varmepumper – HeatUp Petter Nekså [email protected]Sjefforsker SINTEF Energi AS Also, Adjunct Professor at NTNU, Dept of Energy and process engineering Visiting Professor at Doshisha University, Energy Conversion Research Center, Kyoto
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Svenska KVP 2016, Gøteborg, 2016-10-21 Høytemperatur …€¦ · Market and motivation HeatUp goal and focus Kigali amendment of the Montreal Protocol Basics about high temperature
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About the HeatUp project Partners Market and motivation HeatUp goal and focus
Kigali amendment of the Montreal Protocol Basics about high temperature heat pumps Working fluids possibilities Currently focussed activities Example steam MVR Related activities
DRYficiency HighEFF
Conclusions
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HeatUp scope
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Utilisation of surplus heat from industrial processes Surplus heat from 30°C to 50°C and higher Heat pumping for delivery at 80°C to 180°C (250°C)
Solution depending on temperature requirements and energy demand of the industrial processes of the partners
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Focus on efficient energy use and how to meet the increasing energy demand in an environmentally benign wayEnd users: Statoil Oil and gas industry Statkraft Varme District heating Hydro Aluminium Aluminium, producer and supplier of al-products Vedde/TripleNine fish oil- and forage producer Mars Petcare producer of forage, chocolates and beverages TINE SA producer of diary products
Represents three of the largest industry sectors in Norway:Oil and gasMetal productionFood technology
Vendors: Hybrid Energy Cadio AS Epcon Evaporation Technology
KPN project supported by the EnergiX program at RCN (Project no 243679/E20)
Research partners: SINTEF Energy Research NTNU, Energy and process engineering
HeatUp partners
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HeatUpmotivation(Germany)
Reference: Wolf, S., et al. (2014). Universität Stuttgart
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Reference: Wolf, S., et al. (2014). Universität Stuttgart
HeatUpmotivation(Europe)
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HeatUpmotivation
Reference: Wolf, S., et al. (2014). Universität Stuttgart
20-25.000 plants of 1 MW capacity (24/7)Potential 25% of this?
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HeatUp goal and focus
Goal Utilisation of high temperature heat pumps in the
industry to reduce primary energy consumption (el and fossil) reduce greenhouse gas emissions
Reduce dependence of fossil fuels
Focus Satisfy the needs in the partner industries Push heat delivery temperatures to 180'C (250'C) Natural working fluids (HCs, NH3, H2O and CO2)
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HFCs to be phased down according to Kigali amendment
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Natural refrigerants, a long term option, avoiding uncertainty of 4th
generation HFCs (HFOs)
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What COPs can realistically be obtained
Assumptions COP variation with temperature lift and heat absorption temp 60% of Carnot efficiency (COP=ηcarnot× COPcarnot)
0
5
10
15
20 30 40 50 60 70 80 90 100
COP
Temperature lift [K]
120 °C
100 °C
80 °C
60 °C
40 °C
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High temperature heat pump challenges
High discharge temperatures Motor cooling Degradation of lubricant, if not oil-free Suction temperatures often above ambient temperatures Acceptable temperature lifts, available heat sources Adaptation to actual heat source and sink characteristics Heat exchange with demanding fluids under challenging
conditions Cost competition to alternative means of heat supply
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Simplified comparison of fluids
*Evaporating enthalpy and thermal conductivity
Property Water Ammonia Propane Butane Isobutane Pentane CO2 R134a R1234yf