Solar heating systems that rely on mechanical equipment for heat transfer are called:

Solar heating systems that rely on mechanical equipment for heat transfer are called:

• A. Passive solar systems
• B. Active solar systems
• C. Hybrid solar systems
• D. Direct solar systems

Answer: (B)

Active solar heating uses mechanical equipment such as pumps or fans to circulate a heat transfer fluid between solar collectors and storage or living spaces. This powered circulation is what defines active systems, letting heat be collected and distributed as needed even when natural air movement wouldn’t move it effectively. Passive solar heating, by contrast, relies on design features and materials to capture and store heat without moving parts. Direct solar systems imply heat moving directly from the collector to the space without a separate circulating loop, and hybrid systems combine solar with another energy source. So, the mechanism-driven heat transfer described here matches active solar heating.

Active solar heating uses mechanical equipment such as pumps or fans to circulate a heat transfer fluid between solar collectors and storage or living spaces. This powered circulation is what defines active systems, letting heat be collected and distributed as needed even when natural air movement wouldn’t move it effectively. Passive solar heating, by contrast, relies on design features and materials to capture and store heat without moving parts. Direct solar systems imply heat moving directly from the collector to the space without a separate circulating loop, and hybrid systems combine solar with another energy source. So, the mechanism-driven heat transfer described here matches active solar heating.