modelDistributionPipe

Modelization of a hot/cold distribution system

Information

Hypothesis and equations

This model takes into account the heat losses of the ditribution system, by two possible methods :

- if pipe characteristics are known, the calculation allows to construct the distribution system connecting radiators and pipe elements

- if not, heat losses can be estimated according to the boiler power

Bibliography

none

Instructions for use

none

Known limits / Use precautions

none

Validations

Validated model - Hubert Blervaque, Sila Filfli 06/2011

--------------------------------------------------------------
Licensed by EDF under a 3-clause BSD-license
Copyright © EDF 2009 - 2023
BuildSysPro version 3.6.0
Author : Hubert BLERVAQUE, Sila FILFLI, EDF (2011)
--------------------------------------------------------------

Parameters

Type	Name	Default	Description
Choice of calculation method
Integer	Choix	1
Choice 1 : Characteristics of pipe known
SI.Length	L	20	Exchange length of dstribution pipe (if L = 0 then simplified and global calculation of heat losses according to QfouNom
SI.ThermalConductivity	U	0.04	Linear exchange coefficient, defining the distribution pipe
SI.SpecificHeatCapacity	CpLiq	4190	Thermal capacity of heat transfer fluid
Choice 2 : Estimation by boiler power
Real	Rpnre	0.8	Ratio of non recoverable thermal losses
Modelica.Units.SI.Power	QfouNom	8000	Rated power supplied by the production system (boiler)
Real	Cperte	0.025	Default losses evaluated at 2.5% of QfouNom

Connectors

Type	Name	Description
Modelica.Blocks.Interfaces.RealOutput[2]	WaterOut	Vector containing 1- the output fluid temperature (K), 2- the output fluid flow rate (kg/s)
Modelica.Blocks.Interfaces.RealInput[2]	WaterIn	Vector containing 1- the input fluid temperature (K), 2- the input fluid flow rate (kg/s)
BuildSysPro.BaseClasses.HeatTransfer.Interfaces.HeatPort_a	T_int	Heatport to connect to the thermal zone

Revisions

Hubert Blervaque - Juin 2012 : MAJ de la documentation BuildSysPro