źródło ogrzewania

This often occurs due to the type of heating source employed: open fires over which the meat is simply hung.

House fires pose an additional risk, as more people turn to alternate heating sources without taking the necessary safety precautions.

Infrared radiation can be used as a deliberate heating source.

Did it have its own heating source?

Nearly half of the homes in Westchester use fuel oil as their primary heating source.

In the middle of the 20th century charcoal was replaced with electricity as a heating source.

The are quite useless as a heating source as per basic physics.

Natural gas is the heating source for 53 percent of homes in the city, according to the 2000 census.

Gradual warming with blankets; an external heating source should not be used.

Which of the following water heating sources is the most efficient?