BOD (Biochemical Oxygen Demand) กรุนด์ฟอส
The quantity of oxygen consumed by aerobic microorganisms during the decomposition of organic matter in a water sample is defined as the Biochemical Oxygen Demand (BOD).
Boiler shunt กรุนด์ฟอส
The primary task of the boiler shunt is to ensure that the difference in temperature between the top and the bottom of the boiler is not too high. A high temperature difference can cause tensions in the material and thus reduce the life of the boiler.
Consumers who live in areas with no district heating have to use their own boiler to produce central heating. A boiler installation has the following components: burner, nozzles, boiler casing, hot-water tank (integrated or separate) and a chimney.