English to Italian Tech/Engineering Energy / Power Generation

E' il titolo di un paragrafetto:

Passive and active solar space heating systems

These solar heating systems with air heat collectors (glazed or unglazed) or with liquid collectors, can be > 25 times more cost-effective than solar electric systems. Evacuated tube solar collectors mounted on the roof or on another structure should have a high performance so that high temperatures can be achieved even with cold outdoor conditions.

Grazie per l'aiuto!