C O N T E N T S

experimentally determined. The evolution of contact temperatures versus
time, for each material, indicates an early rapid decrease in temperature,
followed by a slight increase during 2-3 minutes. Then, the contact
temperature is stabilized to a value that remains constant for a period of 3
to 7 minutes, quite long enough to measure the temperature of contact. In
addition, we performed numerical simulations in variable regime using
the NASTRAN ® software to determine the temperature distribution in
the contact area.
Key words: building materials, thermal conductivity, humidity,
temperature of contact, simulation.
RESEARCH AND STUDIES ON ENERGY EFFICIENT
SOLUTIONS FOR ENVIRONMENTAL PROTECTION IN THE
HEATING AND COOLING SYSTEMS FOR SCIENTIFIC
RESEARCH LABORATORIES OF THE UNIVERSITY CAMPUS
BRAŞOV
by
IOAN CĂLDARE
Abstract: Starting from the basic ideas of the conception and design
of buildings with low energy consumption, using non-conventional
energy, research and studies refer mainly to: The capture and use of the
soil heat in heat pump installations: 2 reversible heat pumps for each of
the 12 scientific research laboratories. Were studied three variants of
geothermal collectors: surface geothermal horizontal collector (h = 1.5
m), small depth vertical geothermal collector type spiral drill (h = 5m),
and geothermal probe of great depth (h = 100 m). Heating and cooling
installations for all 12 laboratories by radiating surfaces: concrete
tempered, semi tempered and floor heating.
By coupling installation of heat pumps with heating and cooling
systems of the laboratories of scientific research results that about 65-
70% of annual energy for heating and cooling of a scientific research
laboratory is provided by unconventional energy sources.
Key words: heat pump, solar panel, collector geothermal,
heating/cooling, radiant surfaces.
STRUCTURES ET ADAPTATION PEDAGOGIQUES DANS LA
CONSTITUTION D’UNE SPECIALISATION DE GÉNIE