v1.3.1

Created Montag 05 März 2018

This Template shall be used.

Overview

New Models

A new Example model (ClaRa.Examples.SteamPowerPlant_01) of a complex power plant has been added which uses the same steam cycle as example SteamCycle_02 but a more complex boiler model which uses a static cycle model and features gas and particle radiation.
A new sensor for measuring the lower heating value in fuel connections was added

User Experience

updated icons for pipes making advanced pipes and simple pipes distinguishable
updated cons for joins and splits to be in analogy to pipe icons
added visualisation for VLE split and join pressure losses (in analogy to the pipes)
made some icons more compliant with ClaRa icon conventions and removed level of detail visualiser from icons
Added lower heating value to summary of fuel transporting components
New quadruple visualiser for StaticCycle models

Bugfixes

A_heat from generic heat transfer models removed (now using geo.A_heat). If generic heat transfer models have been used in gas pipes (VolumesValvesFittings.Pipes.PipeFlowGas_L4_Simple) or regenerative air preheaters (HeatExchangers.RegenerativeAirPreheater_L4 and HeatExchangers.RegenerativeAirPreheaterPrimaryAndSecondaryAir_L4) the heat transfer area was not calculated correctly. The specialized heat transfer model for regenerative air preheaters was not affected.
A bug was fixed where the usage of generic heat transfer models for the ClaRa.Components.HeatExchangers.RegenerativeAirPreheater_L4 and ClaRa.Components.HeatExchangers.RegenerativeAirPreheaterPrimaryAndSecondaryAir_L4 lead to incorrect heat transfer surfaces
Recall of logarithmic mean temperature calculation bugfix of ClaRa v. 1.3.0. The smoothed calculation of Delta_T_log was erroneous which led to higher heat flows than intended. The Heat flow should now be the same for smoothed and unsmoothed calculation of the logarithmic mean temperature for negative values.
XYplot: bugfixed dimension of input x2 (previeously, N_nodes1 and N_nodes2 had to be equal)
Some gas sensors had fixed reference to SimCenter.FlueGas which has been changed
bugfixed summary of gas and vle valves
bugfixed ClaRa.StaticCycles.ValvesConnects.Valve_cutPressure1: changed sign of Delta_p_nom
bugfixed StaticCycles.HeatExchangers.Preheater_twoShell with respect to used outlet port

Detailed Release Notes

Examples

SteamPowerPlant_01
bugfixed SteamCycle_02, condensate pump is now attached to motor

Basics

HeatTransfer

bugfixed heat transfer models if option temperatureDifference= "logarithmic mean - smoothed" is enabled and Delta_T is negative, see also release notes

v1.3.0:BugfixLogMeanT

Gas Volumes

pseudo state for xi_flueGas removed because it is no longer needed. Improved simulation speed.

VLE Volumes

added nominal values to iComVLE_L2

Components

Pumps

improve initialisation of pump models, start values for m_flow (following volume model)/p (following flow model) are assumed by solver with zero, could be set to m_flow_nom/p_nom to improve general initialisation of ClaRa models

Mills

Added lower heating value to summary of fuel transporting components

Furnace

Added lower heating value to summary of fuel transporting components

VolumesValvesFittings

added fuel object to ClaRa.Components.VolumesValvesFittings.Fittings.SplitFuel_L1_flex which makes coal properties accessible

ClaRa.Components.VolumesValvesFittings.Valves.ValveVLE_L1 and ClaRa.Components.VolumesValvesFittings.Valves.ValveGas_L1 and ClaRa.Components.VolumesValvesFittings.Valves.ValveFuelGas_L1 :
- bugfixed outline summary: removed Boolean value isSupercritical, calculation of flowIsChoked and PR_crit in subordinate pressure loss model
- Tidied up Valve Pressure Loss models:
  - Declared ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.QuadraticKV, ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.QuadraticNominalPoint as obsolete models,
  - ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.Quadratic_EN60534_incompressible or ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.Quadratic_EN60534 with the according parametrisation option should be used instead

ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.Quadratic_EN60534_incompressible
- added dependency on fluid properties for calculation of choked flow → Results may change
- added option for parametrisation according to nominal point, zeta value or Kvs
- bugfixed choked flow calculation
ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.Quadratic_EN60534
- added option for parametrisation according to nominal point, zeta value or Kvs
- introduced choking according to DIN EN 60534
- bugfixed calculation of correction factor x_Tp
smoothed calculation of gamma in valve models

StaticCycles

add density to valve summary for parametrisation of quadratic pressure loss models
add temperatures to triple (-->quadruple)
added used medium to all StaticCycle vle components to allow usage of StaticCycle quadrupple
bugfixed ClaRa.StaticCycles.ValvesConnects.Valve_cutPressure1: changed sign of Delta_p_nom
bugfixed StaticCycles.HeatExchangers.Preheater_twoShell with respect to used outlet port (SteamSignal_green_a → SteamSignal_green_b) to avoid singular StaticCycle application models

Documentation

Fundamentals

Heat Transfer Carrier Tube Doku update

Meachanical Separation

Drum: updated documentation

Valves

Update Fundamentals: missing pages @R131

ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.IdealSymetric_TWV
ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.QuadraticFrictionFlowAreaSymetric_TWV
ClaRa.Components.VolumesValvesFittings.Valves.Fundamentals.QuadraticFrictionNominalPointSymetric_TWV