Data Analyses of energy use in 3 feed factories

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In order to be able to reduce energy consumption of feed factories, several parameters must be known (registered if possible or estimated when missing). These parameters can be used to calculate the net Specific Mechanical Energy (SME) and Specific Thermal Energy (STE). Data were provided by A, B and C. The analyses made in this project focused on the net SME of the expander or BOA, of the press, of the process (expander/BOA+press) andon the STE of the conditioner. Based on these analyses, possible reduction of energy consumption were estimated.When considering SME and STE values per production line and/or per type of feed the most often produced in the factories, it was observed that:•Net SME values are mainly between 10 to 20 kWh/t. This corresponds to the expected values when producing pigs feed while this is quite high compared to the literature data for poultry feed.•Opportunities exist to reduce energy consumption. For example, optimization of the capacity values, of the meal temperature or of the use of the machine can help to reduce the SME and STE.•In the analyses conducted with the available data, the potential energy reduction by taking off the most consuming runs was different within the factories. For example, when deleting up to 10% of the most consuming runs on a thermal or mechanical point of view, STE was more efficiently saved than SME at A: up to 18% of thermal energy could be saved compared to maximum 13 % of mechanical energy saved. This was the opposite at B(15% of thermal energy saved vs. 21% of mechanical energy saved). At C, up to 12% of mechanical energy could be saved when deleting 10% of the most consuming runs on a mechanical point of view. Saving of thermal energy could not be estimated because of the wide spread of the values.It was therefore concluded that they are some opportunities to reduce the energy consumption.It was also concluding that by taking of a small part of the most consuming runs, an important part of energy use (up to 20 %) could be saved.
Original languageEnglish
Place of PublicationWageningen
Number of pages31
Publication statusPublished - 27 Nov 2013
Externally publishedYes


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