A flow battery house. Ron Kok President

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Garey McKinney
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1 A flow battery house Ron Kok President

2 An autonomous energy system for domestic use Based on hydrogen and a flow battery fed by renewable energy sources

3 What s needed? Renewable energy source PV, Wind Electricity generator Flow battery system Power electronics Inverter and Converter Control unit PLC

4 Schematical relation between the modules PV Modules Flow Batt. Inverter 230 VAC Wind (Battery) Other DC power sources HPC Heat Pump PLC

Renewable energy sources Primary use: High performance mono crystalline PV Modules (>20% efficiency) Secondary use: Small wind turbine as addition to the

5 Renewable energy sources Primary use: High performance mono crystalline PV Modules (>20% efficiency) Secondary use: Small wind turbine as addition to the delivered energy from PV modules. High performance PV panel from SunPower Corporation Example drawing of a Darrieus wind turbine (small, silent, efficient)

6 Flow battery A flow battery is an electrochemical system that is based on storage of electrical energy (DC) in electrolytic fluid. Why a flow battery and not a fuel cell?: Easier, more stable system, easier to maintain. Input: Electricity Output: Electricity, Heat

7 Optional HPC / HP Depending on the type of flow battery, it also produces heat besides electricity. Normally the heat is a rest product of the reaction. (In a house, the hot water/steam can easily be used for heating up tap water for domestic use). Result: This combination increases the total efficiency of the flow battery system Heat-Power-Coupling. A flow battery has an operating temperature between degrees and therefore less interesting for HPC systems compared with other flow battery types

8 Optional HPC / HP As an addition to the Heat-Power-Coupling on the flow battery, a heat pump can be used for the heaters in the house and/or the water for domestic use (bathroom/ kitchen). The extra heat for these purposes is for example extracted from the earth

9 Inverter An inverter is needed to invert the generated electricity from the flow battery (DC) into an useful voltage for domestic use (~ 230 V). The input of the inverter can also handle direct DC current from the initial energy sources like PV modules and wind turbines

10 Control unit (PLC) An control unit (PLC) is necessary to balance the power and gas flows between all the modules in the flow battery system. For example: Whenever the light and/or wind energy is not available or enough for the electrical requirements in the house at a certain time the control unit will automatically regulate the flow battery system

11 Build up of a flow battery house (1) House Sun/wind Ren. Energy sys. Flow batt. / HPC / HP Inverter Control unit

12 Build up of a flow battery house (2) House Sun/wind Ren. Energy sys. Flow batt. / HPC / HP Inverter Control unit

13 Build up of a flow battery house (3) House Sun/wind Ren. Energy sys. Flow batt. / HPC / HP Inverter Control unit

14 Build up of a flow battery house (4) House Sun/wind Ren. Energy sys. Flow batt. / HPC / HP Inverter Control unit

15 Build up of a flow battery house (5) House Sun/wind Ren. Energy sys. Flow batt. / HPC / HP Inverter Control unit

16 Build up of a flow battery house (6) House Sun/wind Ren. Energy sys. Flow batt. / HPC / HP Inverter Control unit boiler AC HPC HP Flow batt

17 Build up of a flow battery house (7) House Sun/wind Ren. Energy sys. Flow batt. / HPC / HP Inverter Control unit boiler HPC HP Flow batt. INV

18 Build up of a flow battery house (8) House Sun / wind Renewable energy system Flow batt. / HPC / HP Inverter Control unit boiler HPC Flow batt. HP PLC INV

19 Build up of a flow battery house (9) House Sun / wind Renewable energy system Flow batt. / HPC / HP Inverter Control unit Total system boiler AC HPC Flow batt. HP PLC INV

20 End result An autonomous energy system with use of renewable energy sources. No emissions that are harmful for the environment; Not depending on finite availability of fossil fuels; Political independent from countries with fossil fuel supplies

21 Goal OTB Group The goal of the OTB group is to build a flow battery driven house with renewable energy sources at the basis of the energy chain of the system. Integration of all modules in one system; Development of software for the control unit (PLC); Ready-to-use autonomous system for integration in houses; Low cost, efficient, easy to use and environmentally friendly

22 Thank You OTB Group

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