COMPARISON OF ACTUAL AND STANDARDIZED CONSUMPTION OF HOT WATER BY THE HOUSING STOCK OF UKRAINE

This study analyzes the consumption of hot water in multi-apartment residential buildings located in different cities of Ukraine. Data on standardized and actual hot water consumption for residential buildings and apartments were collected and analyzed. The main objective of the study was to investigate and compare the standardized and actual consumption of hot water and heat energy in multi-story residential buildings. To accomplish this task, data from apartment water meters on hot water consumption for residential buildings and apartments were collected. After processing the collected information, the necessary calculations were made to determine the savings with the subsequent consumption of hot water of actual and standardized consumption for an apartment with four residents. This allowed us to establish the actual consumption of heat and hot water and determine the efficiency of hot water supply systems. Previously, due to the lack of individual meters, the total standardized and actual consumption of cold and hot water per person was compared by calculation. Today, the design of hot water systems is still based on outdated standards adopted in the 1990s. As a result, the current standards are overestimated and require immediate objective review and recalculation. Approximate readings of apartment meters should be used, not the average values that have been used for decades. The prices per 1 m3 of hot water per resident for apartments without heated towel rails were taken into account when building the graphs. As of 2021, the cost was UAH 86.32. As a result of the calculations, it was found that the savings in hot water consumption, compared to actual and standardized consumption, for the apartment in question with four residents for the period June – December 2021 is 42.2 m3, and in value terms, this amounts to UAH 3642.70.