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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 1
Activity C3 main resultsAnalysis of 29 SHC plants
Daniel NEYER, Rebekka KÖLL
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 2
Introduction
Solar cooling and heating can be complex Solar Thermal or Photovoltaic driven Demands (domestic hot water, space cooling, …) System design & configurations (backups, storages,…) Boundaries (system and time) …
Assessment in a common comparable format T53E4 Assessment Tool Assessment based on (monthly) energy balances Measured or simulated (sub) system
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 3
Technical Key Figures
Non-renewable primary energy ratio (PERNRE) Useful energy (푄 ):
space heating, cooling, domestic hot water, … Energy input / effort (푄 )
electricity (el),energy carrier (in e.g. natural gas, etc.)
Primary energy conversion factorselectricity: eel = 0.4 kWhUse/kWhPE.NRE
natural gas: ein = 0.9 kWhUse/kWhPE.NRE
푃퐸푅 =∑푄
∑ 푄 ,휀 + 푄
휀
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 4
Technical Key Figures
Non-renewable primary energy savings (fsav.PER-NRE) Comparison of non-renewable Primary Energy (PERNRE) Solar (SHC) vs. predefined reference (ref) Standard in T53E4 Tool
• natural Gas • air cooled vapour compression chiller
푓 . = 1 −푃퐸푅 .
푃퐸푅 .
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 5
Economic Key figures
Annuity method & input values based on EN-standards Standardized (data base) to calculate annualized costs
Investment, replacement & residual value Maintenance & service, Operational costs (energy, water) Solar Heating and Cooling and Reference
CostRatio (CR)
CostRatio(CR) =푎푛푛푢푎푙푖푧푒푑푐표푠푡푠푆퐻퐶푎푛푛푢푎푙푖푧푒푑푐표푠푡푅퐸퐹
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 6
Results obtained
Assessment of 29 SHC plants with T53E4 Tool Technical analysis
Energy balance check Comparison to T53 Standard System & Subsystem Analysis PERNRE, PERNRE.ref, fsav.NRE, SPFequ
Economic analysis Investment, Replacement & Residual Maintenance, Energy (electricity, natural gas,…) Comparison to T53 Standard Spec. Invest, LCOESHC, LCOEREF, CR
Trend analysis Sensitivity analysis
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 7
Overview Examples
17 examples (29 configurations)
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 8
Overview Examples
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 9
Energy Supply
Mainly 2 / 3 applications Huge difference in amount of energy!
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 10
Investment Cost
Investment of SHC compared to reference + 60% (7) + 60 -120% (12)
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 11
Investment Cost
Investment of SHC compared to reference + 60% (7) + 60 -120% (12)
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 12
Total Annualized Cost
Small scale mainly investment dominated Large scale energy costs dominated
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 13
fsav.NRE vs. CR
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 14
Trends
SHC overall Exclude #13, 14, 16, 17 (no annual energy balance)
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 15
Trends
South vs. North 2 vs. 3 applications (C, DHW, SH) ST vs. ST + HP vs. ST + PV vs. PV C vs. DHW vs. SH Simulated vs. monitored ST/PV combined with south/north to follow soon
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 16
Sensitivity Analysis
6 Parameter with each 7 Variation
Investment Cost (€/kW) 40, 55, 70, 85, 100, 115, 130 [%] Electricity price (10 ct/kWh) 50, 100, 150, 200, 250, 300, 350 [%] Natural gas price (5 ct/kWh) 50, 75, 100, 125, 150, 175, 200 [%] Auxiliary demand (kWhel) 50, 60, 70, 80, 90, 100, 110 [%] Energy output (kWhuse) 80, 90, 100, 110, 120, 130, 140 [%] Conversion factor (0,4 kWh/kWh) 80,90,100,115,130,145,160 [%]
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 17
Sensitivity
Investment cost Only affect the CostRatio Plants with higher fsav.NRE are more sensitive
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 18
Sensitivity
Electricity price Only affect the CostRatio Heat pump systems more affected Higher fsav.NRE less sensitive
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 19
Sensitivity
Natural gas price Only affect the CostRatio Affect reference and ST + natural gas boiler
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 20
Sensitivity
Auxiliary demand (electricity) Affects CostRatio and fsav.NRE Heat pump systems more affected Higher fsav.NRE less sensitive
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 21
Sensitivity
Energy output Affects CostRatio and fsav.NRE Higher fsav.NRE more sensitive
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 22
Sensitivity
Conversion factor electricity Only affect the fsav.NRE Electricity based systems are more affected
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 23
Summary
T53E4 Assessment Tool T53E4 Tool simplified analysis for trend-wise comparison
Based on monthly energy balances
Focusing on non-renewable primary energy
Performance of examples Non-renewable Primary Energy Savings > 30%
Higher savings lead to higher costs
Economics are investment dominated
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 24
Summary
Trends Indication for optimization potential
Simplified comparison of different boundary conditions
Sensitivity Effect of changes in boundaries
Large differences for different systems
sensitivity for certain type of systems to follow soon
Next steps Finalize sensitivity analysis
Finalize report to be expected in summer 2018
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Apr 11th - 12th 2018 IEA SHC Task 53, 9th Expert meeting Dresden
Slide 25
Thank you for your attention!