Energy and power quality mapping of a coater oven

University essay from

Author: Erik Brené; [2021]

Keywords: ;

Abstract: The energy market is developing rapidly, with renewable energysources yearly winning market shares. To maintain this growth andto expand into the transport sector it must become cheaper and moreavailable to store electric energy. Lithium-ion batteries are oneof the most promising candidates for achieving this. But to producethese batteries large amounts of energy are needed. It is thereforecritical to minimise the power usage when constructing thesebatteries.The purpose of this master thesis was to map the energy usage of acoater oven and to locate weak spots in the process. It was done byanalysing the power usage and estimating the energy in the exhaustair being dispatched from the oven and other losses. The results highlighted that the coater oven’s existing heatexchanger was performing poorly and became worse with lower airtemperatures leaving the oven. It was also concluded that some ofthe equipment powering the oven was over-dimensioned and as aresult had a power factor much lower than optimal. This was leadingto an unnecessary high reactive power consumption. It was alsoshown that the oven at higher loads was able to produce morematerial per kWh, hence being the most energy efficient way ofoperating it.It can therefore be summarised that the best way of operating theoven is at higher loads. It is the most energy efficient option andis at the same time minimising the percentage of reactive powerusage, thereby also lowering some heat losses. It also comes withthe advantage of improving the efficiency of the heat exchanger, aheat exchanger performing at poorly levels and in need of a rework. 

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