Variability of maximum hourly hot water consumptionin multi-family residential buildings
author:
WŁADYSŁAW SZAFLIK, JERZY NEJRANOWSKI
ORCID ID:
0000-0003-3767-8766, 0000-0002-1836-2937
No:
06/2023 Instal p.24-28
DOI:
10.36119/15.2023.6.4
The article presents a method for determining the maximum hourly hot water consumption with specified probability
of occurrence taking into account the number of inhabitants in multi-family residential buildings. It was assumed that
the maximum hourly water demand per single resident of the building is a random variable with a normal
distribution with the expected value of –
qj max and the standard deviation of S–
qj max
. Then, based on these
assumptions, the parameters of the distribution of the maximum hourly hot water demand were determined. For this
purpose, the results of water consumption measurements by residents of seven residential buildings located in several
housing estates in Szczecin were used. Knowledge of the distribution parameters allows for determining the
variability of the unit consumption value depending on the probability. Using this information, the average unit water
demand was calculated for probabilities of 90%, 95%, 99%, and 99.9%, along with lower values depending on the
number of building inhabitants. The results obtained are presented in a graph.
Keywords:
About Authors:
prof. dr hab. inż. Władysław Szaflik, https://orcid.org/0000-0003-3767-8766, szaflik@zut.edu.pl, dr inż. Jerzy Nejranowski https://orcid.org/0000-0002-1836-2937 – Zachodniopomorski Uniwersytet Technologiczny w Szczecinie, Katedra Ogrzewnictwa, Wentylacji i Ciepłownictwa, Szczecin, jerzynej@zut.edu.pl