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 shift from fossil fuels to renewable energy will further
require the modification of industrial energy systems, currently relying on
natural gas. Shifting the process energy supply to electricity, also brings new
opportunities for energy efficiency measures and process control.
Industrial laundries are wide spread and
process large amounts of e.g. hotel and hospital linen and clothes. The laundry
process consists of several steps, such as washing, mechanical water removal,
thermal water removal (drying) and post-processing (e.g. ironing and steaming).
Traditionally all processes are powered by steam generated in a central
The laundry processes were found to have a
great potential for energy efficiency and waste heat recovery.
The aim of the project is to carry out an
in-depth study of opportunities (energy and water recovery) of specific
processes in an industrial laundry. The elements of such a study will consist
a complete overview of energy and water usage in the facility
waste water and waste heat sources.
opportunities for optimizing energy and water usage in the facility
process integration/heat recovery (e.g. heat pumps)
and evaluate opportunities for electrification of processes
technical, economic and sustainability assessments of the proposed
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,
thermal storages and heat pumps; Feasibility studies; Uncertainty and
sensitivity analysis; The scientific focus of the project can be discussed and
any suggestions from students are very welcome.
The scope of the project can be adjusted to a special course, bachelor or master thesis.
The project will be carried out in collaboration with industrial partners
from the energy consultancy (Viegand Maagøe) 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.
students are required to have a background
in thermodynamics, energy engineering or sustainable energy. Knowledge about
pinch analysis, heat exchanger networks, energy efficiency and industrial
production is beneficial but not a requirement. 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).
I samarbejde medViegand Maagøe A/S