The provided diagram depicts the process involved in the domestic central heating system.
Overall, it can be seen that there are several stages in the central heating system, starting with the water collection in tanks and ending with the distribution of hot water in various rooms in the house.
According to the illustration, initially, water is collected in a water tank and then flows into storage tank through overflow pipe. Then, water passes through boiler where it is boiled using gas or oil. After this, hot water moves to various radiator across the house. Radiators consist small tubes to warm rooms. Finally, cold water from these radiators flow back to the storage tank using pump that fetch water from pipelines. This whole system works in cycle where these cold water flows again and again into the boiler and pump. Some amount of hot water transferred to taps via overflow pipe.
