operational hours counter - what is your central heating costing you?

11-44 — elektor november 1980 operational hours counter what is your central heating costing you? If it is known how many hours a centra) heating system (whether gas or oil) is in operation, it is a simple matter to deter- mine how much energy can be saved by turning off one or several radiators. The number of operational hours can also indicate the correct time to switch from the day thermostat to the night and vice versa. When experimenting with the radiators all that is needed to arrive at the most efficient setting, is a comparison of the number of operational hours before and In order to determine the correct time to switch the thermostat from the day to the night level and vice versa, the minimum number of operational hours in the day time during which the house is comfortably warm can be empirically established. The block diagram Figure 1 shows the block diagram of the operational hc,urs counter. The input of the circuit is connected in parallel to the thermostat switch. ...