Thermal energy supply and storage in ehub and NEST 6 th SCCER HaE - PowerPoint PPT Presentation

Urban Energy Systems Laboratory BEST – Building Energy Systems and Technologies Group Thermal energy supply and storage in ehub and NEST 6 th SCCER HaE storage Symposium October 25 th , 2017 Empa, Urban Energy Systems Laboratory, BEST Dr. Luca Baldini

Why demonstrators?  Offer a real environment for technology integration and testing (living lab with user feedback)  Allow to take risks (failure is an option)  Foster collaboration with industry (PPP, co-creation space)  Provide visibility and raise awarness (lighthouse)  Great chance for systemic research (interplay of multiple technologies) - 2 -

NEST - 3 -

NEST - 4 -

ehub - 5 -

Energyhub - 6 -

ehub - 7 -

move - 8 -

Thermal infrastructure NEST - 9 -

Thermal infrastructure NEST - 10 -

Thermal infrastructure ehub - 11 -

Thermal/electrical infrastructure NEST/ehub Unit vw Unit vw NEST Backbone Unit m2c PV Unit m2c NEST Backbone Unit x PV Unit x Unit x Unit x Unit x Unit x Empa – «Unit Backbone» «Unit Backbone» electrical Empa – thermal Grids Grids 2x1100lt 2x1100lt ehub 2x1100lt ehub Li-Batt NMC SCaps HP HP 96kWh .5kWh 28kW th 100kW th move PV PV E-charger fuell cell 2kW th ; Ground heat 2x260m Ground heat 12m Ice storage 69m3 Batteries PV Methanization Elektrolyseur 1kW el charge 2x9.7kW; discharge 2x14.6kW charge 4.7kW; discharge 7kW charge 30kW; discharge 20kW mobility ?? 200kVA ??kW 100kWp 2x33kW - 12 -

Energy storage technologies Source: mckinsey.com - 13 -

Short term storage  GHX built out of PEX for high temperature charging up to 60°C  Use as heat source and short-term thermal storage (intra day) Source: www.xorella-frank.ch - 14 -

Short and long term ice storage  65 m3 and 6000 kWh  Discharge power 35 kWth  Heat source for heating / cold source for cooling - 15 -

NaOH storage integration in 2020 NaOH - 16 -

Activities started… Source: Nokia - 17 -

Heat pump characterization Studying grid reserves through HVAC control  central element is heat pump  for thermal/electrical coupling COP vs. Output power COP vs. Inlet temperature - 18 -

10 20 30 40 50 60  Building demand emulation 0 12:59:39 while rejecting heat to the GHXs Following virtual building heat demand with heat pump 13:11:39 13:23:39 13:35:39 13:47:39 13:59:39 14:11:39 14:23:39 14:35:39 14:47:39 14:59:39 15:11:39 15:23:39 15:35:39 15:47:39 15:59:39 16:11:39 16:23:39 16:35:39 16:47:39 16:59:39 17:11:39 17:23:39 17:35:39 17:47:39 17:59:39 Reference Measurement - 19 -

NRP 70 project Commelec How to integrate up to 100% of renewables into distribution grids?  Power quality problems such as over- and under-voltages  High volatility of renewables needs to be compensated by fuel-based conventional gen Problems can be avoided by smart real-time control of power flows, and this is what the Commelec framework provides to maintain power balance at all times Source: http://smartgrid.epfl.ch - 20 -

Commelec implementation at Empa ehub - 21 -

Swiss Competence Center for Energy Research Heat & Electricity Storage Empa Laboratory of Urban Energy Systems Building Systems and Technologies Group WP 1 Thermal Energy Storage:  Sorption-based seasonal heat storage Contact: www.sccer-hae.ch office@sccer-hae.ch