Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE credits
Energy retrofitting, i.e energy savings
and the optimal use of energy, are the
prerequisite for closing the gap between
finite resources and increasing energy
demand. Energy retrofitting also means
increasing the value of the building and
making it more durable and comfortable.
These days’ energy-efficiency standards
for buildings become increasingly
important, but using a traditional
insulation material such as mineral
wool, expanded polystyrene and cellulose
insulation materials often means having
to accept increasingly thick layers of
insulation in walls, floors, and roofs.
This consumes valuable floor space in
new construction. In renovation
projects, it is not even possible to
increase insulation thickness without
significant aesthetic and functional
This specific master thesis investigates
the energy refurbishment concept of an
old Telegraphengebäude (telegraph
building) using Nanogel®Aerogel
insulating plaster having a thermal
efficiency of 2 to 4 times better than
traditional insulation materials. The
old building is located in the northwest
district of Karlsruhe, Germany and
built in between 1906 and 1907.
An initial DesignBuilder simulation
result of the old telegraph building
loss around 179 MWh of heat energy every
winter. As part of building renovation,
external walls are insulated with very
low thermal conductance SLENTIT Aerogel
insulation board, windows are changed to
double glazed low-e coated windows, roof
attic is insulted with mineral wool, and
the building is air tightened. This
refurbishment turns in a reduction of
total building energy loss by 61% and an
improvement in primary space heating
demand by 78% in heating season.
2014. , 89 p.
Wagner, Andreas, Dipl.-Ing.