Project

Energy Efficiency and Water Balances in the Food and Beverage Industry

Publisher

Supervisor

Location

Greater Copenhagen area

Increasing the energy efficiency of the industrial sector has the potential to significantly reduce the greenhouse gas emissions associated with the burning of fossil fuels and to reduce the operating costs.

The food and beverage industry is especially a major industrial sector in Denmark and Europe and represents of more than 10% of the private sectors total energy consumption. The food and beverage industry is water-intensive as well, as large amounts of water is used for cleaning purposes, process additives etc. Similarly, the amounts of waste water are significant and represents a large operating cost to handle due to requirements for treatment etc.

Traditionally, energy optimization and water optimization has been considered as two isolated activities even though there should be large overlaps in approaches and methodologies for analyzing and optimization. This is especially relevant for the food and beverage industry, where almost all energy consumption takes place under 100ºC and where large proportions of energy is bound in circulation of hot water for process purposes and cleaning (CIP). Further, new ideas have identified significant potential for re-using waste water as raw water for certain application, which will be feasible if the water is filtered and sterilized (boiled). Waste heat from sterilization can be recovered for other heating purposes so as the sterilization (boiling) can be considered almost energy neutral.

The aim of the project is to carry out an in-depth study of such opportunities (energy and water recovery) in a specific facility within the food and beverage industry, i.e.:

(i)  establish a complete overview of energy and water usage in the facility

(ii) establish a complete overview of waste energy and waste water in the facility

(iii) analyze temperature and quality aspects of all identified energy and water/waste water streams

(iv) identify opportunities for optimizing energy and water usage in the facility

a. via source optimization

b. via process integration/heat recovery

c. via re-use of sterilized water

(v) prepare business cases for selected investment projects to minimize energy and water consumption

(vi) evaluate general aspects of applied methods and approaches in a broader context

 

The project is to be carried out by one or two students, and will to a certain extent be carried out at an industrial   production facility in southern Sweden. It is expected that energy and water balances partly are to be established via measurements programs in the facility.

Based on collected data and information, detailed energy and water end use are to be established and thermodynamic models need to be developed and validated. Methods such as pinch analysis and process integration may be applied to find optimization potentials, which are quantified and evaluated, based on private-economic analyses. The project can further include elements such as modelling of heat exchangers and thermal storages; Feasibility studies; Uncertainty and sensitivity analysis; The scientific focus of the project can be discussed and any suggestions from students are very welcome.

The master thesis project will be carried out in collaboration with industrial partners from the energy consultancy (Viegand Maagøe), the food ingredients facility AAK in Karlshamn and relevant suppliers of equipment and solutions within the energy and water sector. The candidate (s) will be supervised and supported by members of the Section for Thermal Energy at the Mechanical Engineering department at DTU.

The students are required to have a strong background in thermodynamics, energy engineering or sustainable energy. Knowledge about pinch analysis, heat exchanger networks, energy efficiency and industrial production is beneficial. As the work will be in close collaboration with several industrial partners, the students are required to show a high level of organizational and communication skills (e.g. organize project meetings, factory visits, organizing data collection with partners).


In collaboration with

Viegand Maagøe A/S; AAK

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Contact

Company / Organization

DTU Mekanik

Name

Fabian Bühler

Position

Postdoc

Mail

fabuhl@mek.dtu.dk

Supervisor info

MSc in Engineering, Mechanical Engineering

Supervisor

Fabian Bühler

ECTS credits

30 - 35

Type

MSc thesis

MSc in Environmental Engineering

Supervisor

Fabian Bühler

ECTS credits

30 - 35

Type

MSc thesis

MSc in Industrial Engineering and Management

Supervisor

Fabian Bühler

ECTS credits

30 - 35

Type

MSc thesis

MSc in Materials and Manufacturing Engineering

Supervisor

Fabian Bühler

ECTS credits

30 - 35

Type

MSc thesis

MSc in Sustainable Energy

Supervisor

Fabian Bühler

ECTS credits

30 - 35

Type

MSc thesis

Technical University of Denmark

For almost two centuries DTU, Technical University of Denmark, has been dedicated to fulfilling the vision of H.C. Ørsted – the father of electromagnetism – who founded the university in 1829 to develop and create value using the natural sciences and the technical sciences to benefit society.


Today, DTU is ranked as one of the foremost technical universities in Europe, continues to set new records in the number of publications, and persistently increases and develops our partnerships with industry, and assignments accomplished by DTU’s public sector consultancy.

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