Sizing of building water piping systems under real flow rate

Most of the calculation techniques used for sizing building water piping systems does not assess the real flow and pressure that exist in each section of the pipe. When using such techniques, we can only verify the dynamic pressure agreement with given references for a given maximum flow rate. There...

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Hoofdauteurs:	Petrucci, Aron Lopes, Gonçalves, Orestes Marraccini
Formaat:	Online
Taal:	por
Gepubliceerd in:	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008
Online toegang:	https://seer.ufrgs.br/ambienteconstruido/article/view/3432
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id	ojs-article-3432
record_format	ojs
spelling	ojs-article-34322008-11-21T23:45:48Z Sizing of building water piping systems under real flow rate Dimensionamento de redes prediais de água sob vazões reais Petrucci, Aron Lopes Gonçalves, Orestes Marraccini Sistemas prediais; Vazões reais; Redes de distribuição; Redes de água Most of the calculation techniques used for sizing building water piping systems does not assess the real flow and pressure that exist in each section of the pipe. When using such techniques, we can only verify the dynamic pressure agreement with given references for a given maximum flow rate. Therefore it is not possible to precisely determine how the operation of an appliance can influence another. This paper proposes a model for calculating the water consumption in buildings with open piping networks, under steady flow, which allows the real flow rate and pressure present in each point to be determined for any given use configuration. Every hydraulic law is determined for each component, as well as for each appliance attached to the piping. By using a numerical algorithm it is possible to determine flow rate and pressure values that satisfy all internal laws. This paper also presents considerations about a possible change of the paradigm used in building water systems sizing, from the traditional approach (that determines the maximum probable flow rate), to one in which the probability of occurrence of a given use configuration must be determined. A maior parte dos métodos de cálculo utilizados para dimensionamento de redes prediais de distribuição de água não permite avaliar as vazões e pressões reais presentes em cada seção da tubulação. Pelo uso dessas técnicas podemos verificar somente se, para uma dada vazão, tomada como “máxima”, a pressão dinâmica avaliada em determinado ponto satisfaz determinada referência. Assim, não é possível estabelecer com boa precisão como a operação de determinado aparelho influencia outro. Este artigo apresenta um modelo de cálculo para redes ramificadas de distribuição de água em edifícios, sob regime permanente de escoamento, que permite determinar pressões e vazões reais presentes em cada ponto, para uma dada configuração de utilização. Para tal, inicialmente determina-se cada lei hidráulica, de cada componente e aparelho, seguindo-se a determinação das relações mútuas entre tais componentes. Utilizando-se um algoritmo numérico apropriado, determina-se o conjunto de vazões e pressões que satisfaçam simultaneamente tais leis e relações. São também apresentadas considerações sobre uma mudança do modelo de cálculo utilizado em sistemas prediais de distribuição de água, do enfoque tradicional (que determina a maior vazão provável) para um novo enfoque, onde deve-se determinar a probabilidade de ocorrência de determinada configuração de acionamento. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008-04-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.ufrgs.br/ambienteconstruido/article/view/3432 Ambiente Construído; v. 2, n. 4 (2002): Edição Especial Sistemas Prediais; 27-37 Ambiente Construído; v. 2, n. 4 (2002): Edição Especial Sistemas Prediais; 27-37 Ambiente Construído; v. 2, n. 4 (2002): Edição Especial Sistemas Prediais; 27-37 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/3432/1849 Direitos autorais 2016 Ambiente Construído https://creativecommons.org/licenses/by/4.0
institution	Universidade Federal do Rio Grande do Sul
collection	OJS
language	por
format	Online
author	Petrucci, Aron Lopes Gonçalves, Orestes Marraccini
spellingShingle	Petrucci, Aron Lopes Gonçalves, Orestes Marraccini Sizing of building water piping systems under real flow rate
author_facet	Petrucci, Aron Lopes Gonçalves, Orestes Marraccini
author_sort	Petrucci, Aron Lopes
title	Sizing of building water piping systems under real flow rate
title_short	Sizing of building water piping systems under real flow rate
title_full	Sizing of building water piping systems under real flow rate
title_fullStr	Sizing of building water piping systems under real flow rate
title_full_unstemmed	Sizing of building water piping systems under real flow rate
title_sort	sizing of building water piping systems under real flow rate
description	Most of the calculation techniques used for sizing building water piping systems does not assess the real flow and pressure that exist in each section of the pipe. When using such techniques, we can only verify the dynamic pressure agreement with given references for a given maximum flow rate. Therefore it is not possible to precisely determine how the operation of an appliance can influence another. This paper proposes a model for calculating the water consumption in buildings with open piping networks, under steady flow, which allows the real flow rate and pressure present in each point to be determined for any given use configuration. Every hydraulic law is determined for each component, as well as for each appliance attached to the piping. By using a numerical algorithm it is possible to determine flow rate and pressure values that satisfy all internal laws. This paper also presents considerations about a possible change of the paradigm used in building water systems sizing, from the traditional approach (that determines the maximum probable flow rate), to one in which the probability of occurrence of a given use configuration must be determined.
publisher	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate	2008
url	https://seer.ufrgs.br/ambienteconstruido/article/view/3432
work_keys_str_mv	AT petrucciaronlopes sizingofbuildingwaterpipingsystemsunderrealflowrate AT goncalvesorestesmarraccini sizingofbuildingwaterpipingsystemsunderrealflowrate AT petrucciaronlopes dimensionamentoderedesprediaisdeaguasobvazoesreais AT goncalvesorestesmarraccini dimensionamentoderedesprediaisdeaguasobvazoesreais
_version_	1709370651885699072

Sizing of building water piping systems under real flow rate

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