afst.bundel 8 MEI 07 - Technische Universiteit Eindhoven

Ing. J. van de Brake
Old technology for new buildings,
a study on earth-to-air heat
exchangers
Afstudeerrichting
Building Services
Afstudeercommissie
Prof. dr. ir. J.L.M. Hensen
M. Trcka Dipl. Ing.
Ir. J.G. Mast
The consumption of fossil fuels today still increases all over the
world. If this goes unchecked the CO2 concentration in the air
will increase with 50% in the next 25 years. To counteract this
prediction the Kyoto climate treaty was signed in 2002.
For the Netherlands this would mean a 6% reduction of the
CO2 emissions compared with the 159.4 Mton CO2 emissions
of 1990. The largest reductions can be realised in the Build
environment and Transport sector.
The total primary energy consumption for Dutch commercial
buildings in 2000 was in the excess of 306 Petajoule.
The second largest energy consumer in this category is shops
with a total energy consumption of 1938 MJ m-2. But it is also
likely that the energy consumption of residential buildings will
rise in the moderate climates. This is caused by people getting
more accustomed to higher comfort levels during the summer.
afstudeerbundel faculteit bouwkunde
Datum afstuderen
29 januari 2008
Samenvatting
During this study two models of earth-to-air heat exchangers
were made. Using these models the effect of the primary design
criterions, location and climate on the energy savings, the
pressure loss caused by the exchanger and the outlet temperature
of the exchanger were studied. The final goal of this study is
to asses the applicability of ground cooling and heating with air
for new shopping malls and houses in Europe.
Trefwoorden
Durable energy
CO2 emission reduction
Ventilation
Simulation
Feasibility
A possible way of reducing the energy demand of the Build
environment is by applying an earth-to-air heat exchanger.
An earth-to-air heat exchanger dampens the effect of the
ambient temperature on the heating and cooling demands for
ventilation. But unfortunately not even