Abstract: The invention relates to a system for measuring or controlling the thermal comfort in spaces used by living beings. In operation an output signal is produced which indicates whether or how much the actual thermal conditions in the space differ from comfort conditions and this output signal may be used to control the comfort conditions in the space. The sensing means takes into account the same conditions as does a living being with respect to convection heat, radiation heat and the heat produced by metabolism. The last mentioned heat might be set in accordance to the activity level of the living being. The surface temperature of the sensing means is compared with a comfort temperature set by a second setting means. If the first setting means is set to a higher heat supply, the second setting means is simultaneously set to a lower comfort temperature and vice versa.

Abstract: An electric storage heater assembly which is charged at night when energy rates are low and utilized during the day when the rates are higher. A fan unit is controlled by a thermostat to extract heat from the heater assembly. The previous days experience relative to the total time the fan operates is a measure of the heat to be stored during the off hours. An integrator with input and output switching elements activated by a clock controlled time switch is used in connection with a three position room thermostat, the positions being for high and low temperatures and neutral. The input switching element has positive and negative terminals and during day operation, the time the thermostat is in its low temperature position is summed through the positive terminal. The time the thermostat is in its high temperature position is subtracted from the accumulated value of the integrator through the negative terminal.