Which term defines a device that transfers heat from one fluid to another?

Which term defines a device that transfers heat from one fluid to another?

• A. Coil inductor
• B. Heat exchange
• C. Psi
• D. Hydraulic valve

Answer: (B)

A device that transfers heat from one fluid to another is a heat exchanger. It works by allowing two fluids to flow in separate paths so heat moves from the hotter fluid to the cooler one through a solid barrier or through their shared surface, without the fluids mixing. This energy transfer can happen through conduction and convection, depending on the design. Common examples include car radiators, air conditioners, and boilers. The other terms don’t describe this function: a coil inductor is an electrical component for storing magnetic energy in circuits; psi is a unit of pressure; a hydraulic valve controls the flow or pressure of hydraulic fluid. These relate to electrical signals, pressure measurement, or flow control, not to transferring heat between separate fluids.

A device that transfers heat from one fluid to another is a heat exchanger. It works by allowing two fluids to flow in separate paths so heat moves from the hotter fluid to the cooler one through a solid barrier or through their shared surface, without the fluids mixing. This energy transfer can happen through conduction and convection, depending on the design. Common examples include car radiators, air conditioners, and boilers.

The other terms don’t describe this function: a coil inductor is an electrical component for storing magnetic energy in circuits; psi is a unit of pressure; a hydraulic valve controls the flow or pressure of hydraulic fluid. These relate to electrical signals, pressure measurement, or flow control, not to transferring heat between separate fluids.