Which device directly transfers heating energy to a space by radiation or gravity convection?

Which device directly transfers heating energy to a space by radiation or gravity convection?

• A. Terminal Heating Device
• B. Radiant Heater
• C. Boiler
• D. Heat Exchanger

Answer: (A)

When heat is delivered directly into the occupied space, the device at the end of the system that releases that energy is a terminal heating device. These devices sit in the space and transfer heat to the room by either radiation or natural (gravity-driven) convection. Boilers and heat exchangers generate or move heat but do not put it directly into the room—they heat a medium (air or water) that then heats the space through terminal devices. A radiant heater is a specific type of terminal heating device that emits heat by radiation, but the broad category that directly supplies warmth to the space is the terminal heating device.

When heat is delivered directly into the occupied space, the device at the end of the system that releases that energy is a terminal heating device. These devices sit in the space and transfer heat to the room by either radiation or natural (gravity-driven) convection. Boilers and heat exchangers generate or move heat but do not put it directly into the room—they heat a medium (air or water) that then heats the space through terminal devices. A radiant heater is a specific type of terminal heating device that emits heat by radiation, but the broad category that directly supplies warmth to the space is the terminal heating device.