Elizabeth Gottschalk with unidentified classmates on a field trip from Sophienschule; Hannover, Germany. Institutions; Educational; Schools; Portraits; Groups

Elizabeth Gottschalk is probably the student far left on the horse wagon

Single household domestic water heater design and control utilising PV energy: The untapped energy storage solution

Photovoltaic (PV) panels and electric domestic water heater with storage (DWH) are widely used in households in many countries. However, DWH should be explored as an energy storage mechanism before batteries when households have excess PV energy. Through a residential case study in Queensland, Australia, this paper presents a new optimized design and control solution to reduce water heating costs by utilizing existing DWH energy storage capacity and increasing PV self-consumption for water heating. The solution is produced by evaluating the case study energy profile and numerically maximizing the use of PV for DWH. A conditional probability matrix for different solar insolation and hot water usage days is developed to test the solution. Compared to other tariffs, this solution shows cost reduction from 20.8% to 63.3% This new solution could encourage solar households move to a more economical and carbon neutral water heating method.

Unidentified girls class seated at desks in classroom Institutions; Educational; Schools; Portraits; Groups

"Chanukah" written on blackboard at rear left of classroom

Unidentified girls class Institutions; Educational; Schools; Portraits; Groups

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Students on the steps of the Lehranstalt fuer die Wissenschaft des Judentums (Jewish teachers' seminary); Berlin Institutions; Educational; Schools; Portraits; Groups

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Students on the steps of the Lehranstalt fuer die Wissenschaft des Judentums (Jewish teachers' seminary); Berlin Institutions; Educational; Schools; Portraits; Groups

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Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwaldeating lunch, still wearing laboratory coats; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Office of Professor Willy Marckwald; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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Students of Willy Marckwald working in laboratory; Friedrich-Wilhelms-Universitaet Berlin Institutions; Universities

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