How radiators heat the air through convection

Heating · Introduction · printed page 142 (PDF page 143)

Book index entries

Convection Heating with Hot Water Radiators Radiator – Heats the Air through Convection Radiator – on Hot Water Heating Systems

Text in the illustration

convective loop
warm air
air flow
cool air
radiator
exhaust flue
cool water
hot water
heat exchanger
circulating pump
burner
cross section

Generated explanation

A building cross section shows a hot-water heating system with a burner and heat exchanger on the lower level connected to a radiator above. Red supply piping carries hot water to the radiator, while blue return piping carries cooler water back through a circulating pump to the heat exchanger. An exhaust flue carries combustion gases away from the heating appliance. Arrows around the radiator illustrate room-air convection: warmed air rises above the radiator, moves outward, cools and descends, then returns along the floor. The illustration explains normal heat circulation rather than depicting an installation defect.

Components

hot-water radiator hot-water supply piping cool-water return piping circulating pump heat exchanger burner exhaust flue radiator valve boiler