Ship Unloader Energy Consumption
Energy Consumption of different Types of Ship Unloaders

The energy consumption of bulk material ship unloaders has a great influence on the economic efficiency.

Nowadays, there is a worldwide discussion going on about carbon emissions as a main reason for global warming as well as the economical difficulties of many port operations due to less turnover and high energy costs. Against this background, the Institute for material handling, material flow, logistics (fml), Technische Universität München, Germany, initialised an investigation focusing on the specific energy consumption of various types of ship unloading equipment for bulk materials, especially coal, which is the second most important primary energy carrier.
The article provides some information about the relevance of hard coal as a resource for energy generation and industrial production processes, including global reserves, production and terms of trade, together with some insights in the environmental aspects coal usage.
After the description of the measurement technology being used and the basic measurement principles, the article gives an example of measurements carried out for a gantry crane installation. The results of the measurements a presented and analysed and compared to the results of other measurements carried out for a screw type unloader, an unloader with buck elevator and a grab unloader with energy recovery.

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