Central Heating Control Charts for the Economic Use of Energy in Residential Buildings

Abstract

Methods and types (qualitative, quantitative or mixed) of control of central heating installations in residential buildings are presented. Measurements were made for a radiator in a central heating system that was powered by a heating node substation. The output temperature of the heat node supplying the residential building, in which the test stand was located, was compared with the measured supply and return temperature. Indoor room temperature, outdoor air temperature, inflow and outflow temperature on the vertical supplying the heater were also recorded and analysed. These data were compared with the control charts of the heat networks allowing for direct readings of the required feed water temperature for a given outdoor temperature according to the Heat Energy Enterprises data. The differences are accordingly presented. The actual measurements, read at the test stand located on the 2nd floor of the 4-storey building with input parameters of 90/70 °C during the entire month of December 2022, are recorded every 6 hours and are tabulated and displayed in comparison charts with the calculated parameters. Inflow and outflow temperatures values on the vertical supplying the heater and the values of outdoor temperature measured by a sensor were analysed. The temperatures supplied to the radiators in the apartments were also compared with the requirements of electronic heating cost allocators contained in the PN EN 834 standard. New design temperatures for the central heating installation were proposed due to the requirements of the electronic heating cost allocator.