In the cooling installation, which component is primarily responsible for dissipating heat from coolant to the surrounding air?

In the cooling installation, which component is primarily responsible for dissipating heat from coolant to the surrounding air?

• A. Check Valve
• B. Radiator
• C. Expansion Tank
• D. Water Pump

Answer: (B)

The radiator is the component that dissipates heat from the coolant to the surrounding air. It acts as a heat exchanger with a large surface area created by many tubes and fins. Hot coolant from the engine flows through the radiator, and air flows over the fins (often aided by a fan), so heat is transferred from the coolant to the air, cooling the liquid before it returns to the engine. The other parts have different roles: a check valve prevents backflow, an expansion tank holds extra coolant and helps maintain pressure, and a water pump moves the coolant through the loop but does not directly shed heat to the air.

The radiator is the component that dissipates heat from the coolant to the surrounding air. It acts as a heat exchanger with a large surface area created by many tubes and fins. Hot coolant from the engine flows through the radiator, and air flows over the fins (often aided by a fan), so heat is transferred from the coolant to the air, cooling the liquid before it returns to the engine. The other parts have different roles: a check valve prevents backflow, an expansion tank holds extra coolant and helps maintain pressure, and a water pump moves the coolant through the loop but does not directly shed heat to the air.