ADJUSTMENT OF IMPULSE WEATHER REGULATORS FOR HEATING OF BUILDINGS

Abstract

The problem of adjustment of impulse weather regulators recommended for the elimination
of overheating of buildings with excessive heating power both in the case of a "bad" temperature
chart and during its "cutting off", as well as with poor-quality tuning of uncontrolled
mixing units is considered. It is shown how in this case it is necessary to calculate the duty ration
and the period of succession of the control pulses. The duty ratio of the control pulses is determined
by the measurement results of either the system water temperature and its flow or the
temperature of the heat carrier at the input of the heating system and its flow in it. The control
pulse period is selected based on the desired quality of regulation in the steady state. At that,
both the heat-shielding properties of heated buildings and the characteristics of their heating systems
are taken into account. A qualitative analysis of dependences of the duty ratio and the repetition
period of the control pulses from the influencing factors is carried out. Comparison of the
obtained results obtained with the previously discovered data contained in literature sources is
given; the proximity of their final results is shown. It is noted that the approach used in the research
for solving the problem is more "transparent" and simple compared the previously used
ones. Schemes of two variants of the technical implementation of a pulse control system are
considered. The results of the work can be used in the automation of heating systems with uncontrolled
mixing units, in particular for heating systems with elevator connection.