In this paper the thermal behaviour of a direct ground cooling system located in Milano, Italy, isstudied by means of dynamic simulations performed in the TRNSYS environment. The simulationmodel consists of a reference building equipped with radiant panels connected to a vertical groundheat exchanger. Room thermostats and chilled surface condensation sensors provide system control.The ground heat exchanger size is adjusted in order to provide summer comfort conditions in thebuilding as well as sustainable operation over a long period.
In 1997 several countries ratified the Kyoto protocol and so engage themselves to take into accountthe global warming, promote the sustainable development and act in order to reduce emission ofgreenhouse gases. Within this context, energy in buildings is known to be one of the first greenhousegases emitting sector. Consequently, determination of steady-state thermal transmission properties foreach kind of faade components becomes necessary in order to evaluate accurately energy loss, todevelop and enhance new products.
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