DISPOSITIF DE REFRIGERATION A UTILISATION DE CHALEUR PERDUE POUR REFROIDIR LES CYLINDRES DE REFROIDISSEMENT, LES FROTTOIRS D'ENCRAGE ET LES REFRIGERATEURS A HUILE DE MACHINES ROTATIVES D'IMPRESSION

摘要

The cooling system employs a refrigeration machine having two condensers and an evaporator. The evaporator is connected in heat exchange relation with a low-temperature cooling circuit having a water accumulator. A cooling tower circuit for a higher temperature is connected with one condenser in order to cool a second load unit at a higher temperature than the first load unit. The cooling tower circuit may also be employed to cool both load units when the outside ambient temperature is below a certain value. The water accumulator may also be used as a heat source while the refrigeration machine is used as a heat pump in order to supply heat to a building heating system, for example during non-cooling periods.