Sensitivity analysis of water consumption in an office building

Tomas Suchacek,Ladislav Tuhovcak,Jan Rucka,M Cimochowicz-Rybicka

doi:10.1051/e3sconf/20183001002

Abstract

This article deals with sensitivity analysis of real water consumption in an office building. During a long-term real study, reducing of pressure in its water connection was simulated. A sensitivity analysis of uneven water demand was conducted during working time at various provided pressures and at various time step duration. Correlations between maximal coefficients of water demand variation during working time and provided pressure were suggested. The influence of provided pressure in the water connection on mean coefficients of water demand variation was pointed out, altogether for working hours of all days and separately for days with identical working hours.

Highlights

In the Czech Republic, there is currently no legislative regulation defining in a mandatory manner a detailed procedure of calculating water demand related to a public main supplying water to a service area of a town or village type
For comprehensive water supply systems, the design or redesign is often based on mathematical modelling and simulation methods [1], where the hydraulic calculations use as inputs the daily and hourly variation coefficients
Its value can only vary with the number of supplied residents, the focus is set on the maximal coefficients of water demand variation during simulated changes of pressure conditions in the network

Summary

Introduction

In the Czech Republic, there is currently no legislative regulation defining in a mandatory manner a detailed procedure of calculating water demand related to a public main supplying water to a service area of a town or village type. For comprehensive water supply systems, the design or redesign is often based on mathematical modelling and simulation methods [1], where the hydraulic calculations use as inputs the daily and hourly variation coefficients (demand coefficients). The value of these coefficients is not set in legislation of the Czech Republic, not even with the implementation of legislative norms on the EU level (e.g. ČSN EN 805). The method of calculating maximal water consumption per hour is anchored in legislation, in which the coefficient of maximal variation per hour figures Its value can only vary with the number of supplied residents, the focus is set on the maximal coefficients of water demand variation during simulated changes of pressure conditions in the network

Objectives

Methods

Results

Discussion

Conclusion