v1.8.0
Created Tuesday 22 February 2022
This release is planned for June 2022
Overview
- The new version of ClaRa comes with new models for investigating vapour cycles including commonly designed condensers/evaporators.
- Improved numerics, new features, new models and bugfixes.
- Regenerative air preheater models are not supporting former initialisation values with internal linspace function. Please check your starting values of the air preheater model which might be changed by the convert script. The initialisation now works comparable to other discretized components.
New Features
- Lots of minor changes which improve usability of ClaRa and make models more robust and widen the scope of application.
New Models
New vapor cycle components:
- VapourCycle_01: New example model for for investigating vapour cycle including commonly designed condensers/evaporators.
- FlatTubeFinnedHEXvle2gas_L4: A flat tube finned HX model with Gas at fin side and VLE medium at the flat tube side. It is assumed a discretised block-geometry with flat tube loverd fins.
- PlateHEXvle2vle_L3_2ph_ntu: A plate HX model with VLE medium at both sides. It is assumed a block-geometry with corrugated plate using NTU-based heat transfer model.
- PlateHEXvle2vle_L4: A discretized plate HX model with VLE medium at both sides. It is assumed a discretised block-geometry with corrugated plate.
- CompressorVLE_L1_simple: A compressor for VLE mixtures with a volume flow rate depending on drive power and pressure difference only.
- NTU_plate_L3: Heat transfer resistance of a heat exchanger with phase change based on the concepts of Number of Transfer Units (NTU) for plate geometries.
- NTU_plate_L3_standalone: Heat transfer resistance of a heat exchanger with phase change based on the concepts of Number of Transfer Units (NTU) for plate geometries.
Bugfixes
- Lambda calculation in furnace components now regards NO production
Remarks
- Regenerative air preheater models are not supporting former initialisation values with internal linspace function. Please check your starting values of the air preheater model which might be changed by the convert script. The initialisation now works comparable to other discretized components.
Detailed Release Notes
Examples
- VapourCycle_01: New example model for for investigating vapour cycle including commonly designed condensers/evaporators.
Basics
Solid Volumes
- NTU_plate_L3: Heat transfer resistance of a heat exchanger with phase change based on the concepts of Number of Transfer Units (NTU) for plate geometries.
- NTU_plate_L3_standalone: Heat transfer resistance of a heat exchanger with phase change based on the concepts of Number of Transfer Units (NTU) for plate geometries.
Components
Comressors
- CompressorVLE_L1_simple: A compressor for VLE mixtures with a volume flow rate depending on drive power and pressure difference only using enthalpy deifference and isentropic efficiency for determining the power of compressor.
Heat Exchangers
- FlatTubeFinnedHEXvle2gas_L4: A flat tube finned HX model with Gas at fin side and VLE medium at the flat tube side. It is assumed a discretised block-geometry with flat tube loverd fins.
- PlateHEXvle2vle_L3_2ph_ntu: A plate HX model with VLE medium at both sides. It is assumed a block-geometry with corrugated plate using NTU-based heat transfer model.
- PlateHEXvle2vle_L4: A discretized plate HX model with VLE medium at both sides. It is assumed a discretised block-geometry with corrugated plate.