Circuit arrangement for measuring the quantity of heat consumed in a thermal load

摘要

Circuit arrangement for measuring the consumed quantity of heat by means of temperature sensors in a feedline and return line, and having a volumetric meter for the flow medium which is constructed as a pulsar and transmits a pulse for a specific partial amount to a pulse generator which, furthermore, receives from the temperature sensors pulses whose width corresponds to the difference between the feed temperature and return temperature. This results at the output of the pulse generator in a pulse sequence whose pulse frequency is proportional to the flow rate per unit time and whose pulse width is proportional to the temperature difference. A downstream integrator for these pulses thus delivers a measure of the quantity of heat consumed.