Thermoelectric heat pump for heating and cooling in building services with low thermal power (Peltier_Heat_Pump)
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1 Highlights der Energieforschung / / Wien Thermoelectric heat pump for heating and cooling in building services with low thermal power (Peltier_Heat_Pump) Stutterecker, Aschauer + Projektteam
2 Introduction to the project Peltier_Heat_Pump Thermoelectric heat pump for heating and cooling in building services with low thermal power The project is funded by the Austrian Klima- und Energiefonds within the funding scheme Energieforschungsprogramm month-> 5/15 until 10/17 Project leader: Forschung Burgenland GmbH Project partner: Gap solutions GmbH Highlights der Energieforschung / / Wien / 2
3 Thermoelectric devices the Peltier element Highlights der Energieforschung / / Wien / 3
4 Performance data from a manufacturer the project / introduction / aims & method / 1st results / next steps Highlights der Energieforschung / / Wien / 4
5 The aim of the project Peltier_Heat_Pump is to research a device based on Peltier-elements for heating and cooling in the building technology for small scale applications (<2 kw thermal ). This device is characterized through long operation times and little electrical power consumption, through operation without climate-relevant refrigerants, through operation without noise emissions, through operation without maintenance and through the fact that it can be connected to PV without DC/AC conversion losses. Highlights der Energieforschung / / Wien / 5
6 Method Calculation of heat transfer between the thermoelectric element and the heat exchanger as well as between the external thermoelectric heat pump/ heat exchanger unit and the fluid through forced convection based on measurements. Laboratory experiment to evaluate different external thermoelectric heat pump/heat exchanger units for building technology applications to validate the developed calculations Hardware-in-the-loop simulation at the existing heat pump test rig through the application of realistic loads and simulation of PV concepts Highlights der Energieforschung / / Wien / 6
7 Test rig Test rig for thermoelectric modules Highlights der Energieforschung / / Wien / 7
8 Test rig validation Influence of Insulation Phase 1: without insulation Phase 2: 3 cm insulation Phase 3: 6 cm insulation Simulation with COMSOL 5.2 Heat Transfer in a half of the test rig Highlights der Energieforschung / / Wien / 8
9 Measurement of the functionality of the test rig Bild without heating, water-cooled electrical figures were read from the DC-supply Temperature range is sufficient ΔT 36 K, 30 C to 66 C Th approx. 35 min. until steady state Tc ΔT 18 K, 15 C to 33 C Temperatures within the copper block almost identical -> vertical number of sensors are sufficient Highlights der Energieforschung / / Wien / 9
10 Test rig for TE heat pump / heat exchanger Quelle: Fa. Dau, Quelle: Wilo Geniax Highlights der Energieforschung / / Wien / 10
11 Modelling of the thermoelectric modules (3D) COMSOL 5.2 Highlights der Energieforschung / / Wien / 11
12 Next steps Improvement of the test rig for single modules Development of a test rig for thermoelectric heat pumps Calculation and validation of different thermoelectric heat pump-concepts Hardware-in-the-loop simulation Highlights der Energieforschung / / Wien / 12
13 Highlights der Energieforschung / / Wien / 13
14 Further project information:
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