HEAT SUPPLY OBJECT MONITORING METHOD AND PROCESS FOR TESTING HEATING SYSTEM OF BUILDINGS Russian patent published in 2004 - IPC

FIELD: monitoring of water heating systems, automatic control systems of autonomous heating units.

SUBSTANCE: method comprises steps of setting telemetric temperature pickups in selected points of tested object; measuring changes of temperature in generating and depending processes during selected representative time period; processing stored data with use of computer; using electronic thermochronic accumulating pickups as telemetric temperature pickups; programming said pickups in such a way that to provide their simultaneous driving, the same for all pickups time interval between previous and next measurements, fixed period of observation equal to representative time period correlated according to real time; processing in computer accumulated measured values multiple to integral power of two; registering temperature - time relations; with use of fast Fourier transform presenting said temperature - time relations as frequency functions; evaluating ratio of spectrum power of generating and selected depending temperature change processes; selecting effective number of harmonic components of generating process which provide, for example 90% of power of temperature oscillations; taking into account correlation coefficient and determining matching degree of spectral contents of generating and depending temperature change processes; evaluating efficiency of temperature change processes according to ratio of integral power of temperature oscillations in spectra of two selected as pair mutually related temperature change processes. Method for testing heating system of building comprises steps of measuring during selected time period temperature change of outer air as parameter causing regulation process; measuring predetermined temperature values depending upon temperature change of outer air and necessary for optimal functioning of system and for evaluating regulated degree of system; realizing dispersed simultaneous monitoring of system by placing electronic thermochronic accumulating pickups for measuring temperature of outer air and preset temperature values providing resulted temperature of supply tube, temperature of heating radiators and air temperature in rooms of respective floors, temperature of return tube; evaluating efficiency of system according to value of numerical parameter determined as ratio of integral power of temperature oscillation spectrum of supply tube and integral power of temperature oscillation spectrum of outer air showing desired degree of temperature elevation of heat transfer agent for each 1 C of temperature decrease of outer air. Efficiency of heating concrete room is evaluated according to value of numerical parameter defined as ratio of integral power of temperature oscillation spectrum of heating radiators in said room and integral power of temperature oscillation spectrum of supply tube. In correctly regulated system effective number of harmonic components in temperature oscillation spectrum is not more than that in temperature oscillation spectrum of outer air.

EFFECT: enhanced accuracy and validity of measurements due to using numerical parameters for evaluating real heating systems while taking into account thermal lag caused by guard constructions around building.

4 cl, 5 dwg