Abstract
The aim of the research is to analyze the water demand in apartment building calculated according to the state regulations of Poland, Czech Republic, Romania, Slovak Republic and Ukraine and to compare them with the results of experimental measurements in apartment building. Poland and the Czech Republic are characterized by the minimum average coefficient of water demand for residents of the houses with local hot water preparation. For Romania, Slovak Republic and Ukraine this value is higher by 20, 35 and 110–135% respectively. Czech Republic has the lowest values of theoretically calculated daily (minimum, average and maximum) water demand. These values are higher for Romania – by 38.9, 15.3 and 9.7%; Slovak Republic – by 35.2, 34.7 and 34.9%; Ukraine – by 114.8, 101.4 and 109.6% respectively, as compared with water demand in Czech Republic. The average daily water consumption in an apartment building, measured experimentally, corresponds to the normative value of the specific water demand adopted in the Czech Republic. Maximum daily water demand exceeds the estimated value and corresponds to the maximum coefficient of the daily variation in water demand, which equals 1.63.
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