A5052164664- Radiative Heat Transfer Studies
- Hygrothermal properties of building materials
- Building Energy and Comfort Optimization
- Urban Heat Island Mitigation
- Thermoregulation and physiological responses
- Solidification and crystal growth phenomena
- Phase Change Materials Research
- Composite Material Mechanics
- Heat and Mass Transfer in Porous Media
- Numerical methods in inverse problems
- Building materials and conservation
- Combustion and flame dynamics
- Textile materials and evaluations
- Infrared Thermography in Medicine
- Mechanical and Thermal Properties Analysis
- Building energy efficiency and sustainability
- Thermal Radiation and Cooling Technologies
- Nanofluid Flow and Heat Transfer
- Advanced Mathematical Modeling in Engineering
- Aerodynamics and Fluid Dynamics Research
- Renewable energy and sustainable power systems
- Membrane Separation Technologies
- Adsorption and Cooling Systems
- Metallurgical Processes and Thermodynamics
- Membrane-based Ion Separation Techniques
Warsaw University of Technology
2015-2024
Institute of Power Engineering
2019
Western University
1994-2003
This study presents results of investigation on anisotropy thermal conductivity masonry bricks. Few anisotropic properties were presented in literature. Most them focused the measurement across sample thickness only or additionally one direction. In this work, conductivities three types bricks determined with an indirect method which involved measurements diffusivity, specific heat and density. The diffusivity ceramic has been measured using flash technique while differential scanning...
The paper tackles the important problem of estimating and predicting thermal conductivity bio-based building materials that can help decarbonize sector. Knowledge possibility to optimize their insulating properties is first criterion for determining ability use in novel yet not well-studied hemp shives magnesium binder composites with improved mass by microencapsulated phase change material (PCM) were considered. samples without PCM having different densities as well amounts same density...
In the proposed paper, non-equilibrium and equilibrium models of heat moisture transfer through wet building materials are presented compared. former, mass between liquid gaseous results from difference partial pressure water vapor its saturation value. second model, both phases is assumed. can be in continuous (funicular) or discontinuous (pendular) form. The for each model tightly coupled with energy transfer, which assumed to an process. time step grid size sensitivity analysis numerical...
The paper presents a new mathematical model of the processes charging and discharging thermochemical energy storage (TChES) reactor with high potential for effective application in residential building. is an intermediate approach between lumped-element models 2D/3D spatially resolved models. also contains results numerical implementation developed model. efficiency process one key parameters describing operation system, study impact individual factors on its value main goals work carried...
In this paper conduction-radiation controlled solidification process of semitransparent materials was numerically analyzed. New approach in kind simulations, which is based on the fixed grid front tracking method combined with immersed boundary technique, adopted and examined. The presented enables accurate dealing processes have different optical thermophysical properties solid liquid phases as well absorption, emission, reflection thermal radiation at solid-liquid interface without...
The paper presents the initial approach to mathematical and numerical modelling optimization of heat mass transfer in elements masonry wall. considered single moist brick is placed channel through which dry air flowing. Only one wall contact with flowing this boundary moisture are exchanged. non-equilibrium model formulated for general case three phases present porous building material, i.e., water vapour filling pores, liquid (bound water) adsorbed at surface solid component material free...
Purpose The paper aims to present the advanced mathematical and numerical models of conjugated heat mass transfer in a multi-layer protective clothing, human skin muscle subjected incident external radiative flux. Design/methodology/approach garment was made three layers porous fabric separated by air gaps, whereas tissue, four sublayers layer were distinguished. model accounted for coupled conduction thermal radiation with associated phase transition bound water fibres diffusion vapour...
Abstract Purpose The purpose of this study is to developed a simplified thermo-fluid model an engine cowling in small airplane. An aircraft system composed different elements operating at various temperatures and conjunction with the composite nacelle creates region high intensity heat transfer be covered by cooling/ventilation systems. Therefore thermal analysis, accounting for complex modes, necessary order verify that adequate cooling ensured are maintained within limits throughout whole...
The paper presents a complex model of heat and mass transfer in multi-layer protective clothing exposed to flash fire interacting with the human skin. was made porous fabric layers separated by air gaps. fabrics contained bound water fibres moist pores. also present gaps between or internal layer Three skin sublayers were considered. accounted for coupled conduction, thermal radiation associated diffusion vapour Heat exchange due phase transition included model. Complex conditions at...
Analyses of influence different heat transfer modes on temperature distributions in the firefighter's multi-layer protective clothing, skin and muscle were carried out. The system under consideration was irradiated from an external source thermal radiation consisted several fabrics separated by thin air gaps tissue made sublayers. Simulations performed applying in-house 1D numerical model which accounted for coupled conduction clothing with associated phase transition bound water fabric...
The work presents initial credibility analysis of a numerical model heat and moisture transfer in porous building materials. Single moist brick located an air flow duct was considered. Only one wall the contact with only through this boundary were exchanged between brick. Developed considered dry air, vapor water, liquid water solid material. Local non-equilibrium different phases assumed. implemented aid commercial software ANSYS Fluent by using its advance customization interface, i.e.,...
Abstract Hygric, thermal and physical properties were determined for building materials typical the Polish market. One type of mortar two types masonry bricks studied. Thermal diffusivity specific heat dry found using flash differential scanning calorimetry methods, respectively. Water vapour permeability was tested cup method a single temperature 23°C ranges air relative humidity (from 0 to 50% from 50 94%). The tests performed according ISO 12572:2016. Measurements sorption isotherms...
The paper presents verification and validation of an advanced numerical model heat moisture transfer in the multi-layer protective clothing components experimental stand subjected to either high surroundings temperature or radiative flux emitted by hot objects. developed included conductive-radiative hygroscopic porous fabrics air gaps as well conductive stand. Additionally, water vapour diffusion pores spaces phase transition bound fabric fibres (sorption desorption) were accounted for. All...