Prof. Elżbieta Kossecka, Ph.D., Dr. Habil.

Department of Intelligent Technologies (ZTI)
retiree
telephone: (+48) 22 826 12 81 ext.: 441
room: 608
e-mail: ekossec

Doctoral thesis
1969Teoria linii dyslokacji w ośrodku ciągłym 
supervisor -- Prof. Henryk Zorski, Ph.D., Dr. Habil., Eng., IPPT PAN
151 
Habilitation thesis
1974Matematyczna teoria defektów 
Professor
1994Title of professor
Supervision of doctoral theses
1.2010-11-25Walczak Tomasz  Wykorzystanie masy termicznej budynku przy sterowaniu jego systemem grzewczym638
 
2.1996Bzowska Dorota  Wpływ losowych zmian pogody na procesy wymiany ciepła w budynkach 
3.1993Starakiewicz Aleksander  Funkcjonowanie przegród kolektorowo-akumulacyjnych w polskich warunkach klimatycznych 
4.1991Kośny Jan  Teoretyczna i doświadczalna analiza efektywności przegród kolektorowo-akumulacyjnych 

Recent publications
1.Kośny J., Fallahi A., Shukla N., Kossecka E., Ahbari R., Thermal load mitigation and passive cooling in residential attics containing PCM-enhanced insulations, SOLAR ENERGY, ISSN: 0038-092X, DOI: 10.1016/j.solener.2014.05.007, Vol.108, pp.164-177, 2014
Abstract:

Residential attics has the potential to be one of the most energy efficient building components by combining thermal processes of attic floor insulation, attic air space, ventilation in attics, and solar collecting roof decks. Large amounts of solar energy collected by the roofs in cooling-dominated and mixed climates generate excess cooling loads, which need to be removed from the building by the space conditioning systems. This paper investigates potential ways to improve the thermal design of the residential home attics to minimize the cooling energy consumption in the cooling-dominated and mixed climates. Dynamic thermal characteristics of thick attic floor insulations and blends of phase change materials (PCMs) with insulations are analyzed. Both approaches can provide notable reductions of thermal loads at the attic level. In addition, a significant time shift of peak-hour loads can move a major operation time for air conditioning system from the daytime peak hours to nighttime low demand hours. A reverse heat flow direction can be observed during the day in the case of really thick layers of bulk insulation or PCM-enhanced insulations, compared to the rest of the building envelope components. This effect may provide free passive cooling to the building, and can be very useful in locations of double electrical tariffs with high daytime peak-hour electric energy rates and less-expensive off-peak energy cost. In both of the above cases, an addition of PCM to the bulk insulation brings substantial performance enhancement not available for traditional insulation applications. This paper presents a short overview of dynamic material characteristics and energy performance data necessary for future dynamic applications of different configurations of the attic floor insulation and PCM-insulation blends in residential homes. A series of whole-building scale and material scale numerical simulations were performed on a single story ranch house to analyze potential energy savings and optimize location of PCM within the attic insulation.

Keywords:

Building envelopes, Attics, Thermal mass, Insulation

Affiliations:
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
Fallahi A.-Paul Scherrer Institut (CH)
Shukla N.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
Kossecka E.-IPPT PAN
Ahbari R.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
2.Kośny J., Kossecka E., Brzeziński A., Tleoubaev A., Yarbrough D., Dynamic thermal performance analysis of fiber insulations containing bio-based phase change materials (PCMs), ENERGY AND BUILDINGS, ISSN: 0378-7788, DOI: 10.1016/j.enbuild.2012.05.021, Vol.52, pp.122-131, 2012
Abstract:

Experimental and theoretical analyses have been performed to determine dynamic thermal characteristics of fiber insulations containing microencapsulated phase change material (PCM). It was followed by a series of transient computer simulations to investigate the performance of a wood-framed wall assembly with PCM-enhanced fiber insulation in different climatic conditions. A novel lab-scale testing procedure with use of the heat flow meter apparatus (HFMA) was introduced in 2009 for the analysis of dynamic thermal characteristics of PCM-enhanced materials. Today, test data on these characteristics is necessary for whole-building simulations, energy analysis, and energy code work. The transient characteristics of PCM-enhanced products depend on the PCM content and a quality of the PCM carrier. In the past, the only existing readily-available method of thermal evaluation of PCMs utilized the differential scanning calorimeter (DSC) methodology. Unfortunately, this method required small and relatively uniform test specimens. This requirement is unrealistic in the case of many PCM-enhanced building envelope products. Small specimens are not representative of PCM-based blends, since these materials are not homogeneous. In this paper, dynamic thermal properties of materials, in which phase change processes occur, are analyzed based on a recently-upgraded dynamic experimental procedure: using the conventional HFMA. In order to theoretically analyze performance of these materials, an integral formula for the total heat flow in finite time interval, across the surface of a wall containing the phase change material, was derived. In numerical analysis of the southern-oriented wall the Typical Meteorological Year (TMY) weather data was used for the summer hot period between June 30th and July 3rd. In these simulations the following three climatic locations were used: Warsaw, Poland, Marseille, France, and Cairo, Egypt. It was found that for internal temperature of 24 °C, peak-hour heat gains were reduced by 23–37% for Marseille and 21–25% for Cairo; similar effects were observed for Warsaw.

Affiliations:
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
Kossecka E.-IPPT PAN
Brzeziński A.-LaserComp (US)
Tleoubaev A.-LaserComp (US)
Yarbrough D.-R&D Services (US)
3.Kossecka E., Kośny J., Dynamic thermal performance of the frame wall with PCM-enhanced thermal insulation, ZESZYTY NAUKOWE POLITECHNIKI RZESZOWSKIEJ, SERIA: BUDOWNICTWO I INŻYNIERIA ŚRODOWISKA, ISSN: 0209-2646, Vol.57, No.4, pp.309-316, 2010
4.Kossecka E., Instalacje fotowoltaiczne w hotelowym budynku energooszczędnym, Czasopismo Techniczne. Mechanika, ISSN: 0011-4561, Vol.106, No.5, pp.121-129, 2009
5.Kossecka E., Kośny J., Dynamiczna metoda pomiaru zawartości materiału fazowo-zmiennego w izolacji włóknistej, FIZYKA BUDOWLI W TEORII I PRAKTYCE, ISSN: 1734-4891, Vol.4, pp.109-112, 2009
6.Kossecka E., Kośny J., Hot box testing of building envelope assemblies, a simplified procedure for estimation of minimum time of the test, JOURNAL OF TESTING AND EVALUATION, ISSN: 0090-3973, Vol.36, No.3, pp.242-249, 2008
7.Kossecka E., Ocena wydajności instalacji fotowoltaicznych w Centrum Badawczym Jabłonna, ZESZYTY NAUKOWE POLITECHNIKI RZESZOWSKIEJ, SERIA: BUDOWNICTWO I INŻYNIERIA ŚRODOWISKA, ISSN: 0209-2646, Vol.252, No.47, pp.217-224, 2008
8.Kossecka E., The effect of structure and thickness on periodic thermal capacity of building components, ARCHIVES OF CIVIL ENGINEERING, ISSN: 1230-2945, Vol.LIII, No.3, pp.527-539, 2007
Abstract:

Thermal capacity of building partitions and their internal thermal structure, that is location of materials of different thermal conductivity, density and specific heat, have an influence on dynamics of the heat transfer processes, caused by external and internal thermal excitations. Dynamic thermal characteristics of building components, which determine the periodic heat transfer processes, are admittances, transmittances and periodic thermal capacities. In this paper, properties of the periodic heat capacity of interior and exterior building partitions are examined: its dependence on structure, thickness of masonry layers, surface film resistances and period of temperature variations, and also its asymptotic values for high thickness and low frequency. For wall assemblies composed of lightweight materials, and also for massive walls of very low thickness, approximate proportionality takes place. For heavy structures, the dependence becomes curvilinear, and for very thick walls tends to the constant value, attaining maximum for a comparatively low thickness which is approximately twice the periodic penetration depth. For exterior walls, dependence on the thermal mass factor, and also on thickness of the interior massive layer, has a similar character. Maximum periodic heat capacity for walls with insulation outside appears for thickness of the masonry layer of only 10 – 12 cm, which is approximately value of the periodic penetration depth.

Keywords:

heat transfer, building walls, dynamic thermal characteristics, frequency response, periodic heat capacity

Affiliations:
Kossecka E.-IPPT PAN
9.Kossecka E., The effect of structure and thickness on periodic thermal capacity of building components, ARCHIVES OF CIVIL ENGINEERING, ISSN: 1230-2945, Vol.LIII, pp.527-539, 2007
10.Kossecka E., Walczak T., Wydajność instalacji fotowoltaicznych w warunkach klimatu Polski, FIZYKA BUDOWLI W TEORII I PRAKTYCE, ISSN: 1734-4891, Vol.II, pp.141-146, 2007
11.Kossecka E., Walczak T., Szacowanie wydajności hybrydowej instalacji solarno-wiatrowej dla domu jednorodzinnego w warunkach klimatu Polski, ZESZYTY NAUKOWE POLITECHNIKI RZESZOWSKIEJ, SERIA: BUDOWNICTWO I INŻYNIERIA ŚRODOWISKA, ISSN: 0209-2646, Vol.229, pp.277-282, 2006
12.Kossecka E., Wpływ struktury przegród budowlanych na ich periodyczną pojemność cieplną, Czasopismo Techniczne. Mechanika, ISSN: 0011-4561, Vol.103, pp.373-380, 2006
13.Kossecka E., Kośny J., Three-dimensional conduction z-transfer function coefficients determined from the response factors, ENERGY AND BUILDINGS, ISSN: 0378-7788, DOI: 10.1016/j.enbuild.2004.06.026, Vol.37, pp.301-310, 2005
Abstract:

A method of derivation of the conduction z-transfer function coefficients from response factors, for three-dimensional wall assemblies, is described. Results of the conduction z-transfer function coefficients calculations are presented for clear walls and separated details which are listed in ASHRAE research project 1145-TRP: ‘‘Modeling Two- and Three-Dimensional Heat Transfer Through Composite Wall and Roof Assemblies in Hourly Energy Simulation Programs’’. Resistances, three-dimensional response factors and so-called structure factors, have been computed using the finite-difference computer code HEATING 7.2. The z-transfer function coefficients were then derived from a set of linear equations, constituting relationships with the response factors, which were solved using the minimum-error procedure. Test simulations show perfect compatibility of the heat flux calculated using three-dimensional response factors and three-dimensional ztransfer function coefficients, derived from the response factors.

Keywords:

Heat transfer, Thermal response, z-transfer function, Simulation, Building envelope

Affiliations:
Kossecka E.-IPPT PAN
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
14.Kossecka E., Kośny J., Three-dimensional conduction z-transfer function coefficients determined from the response factors, ENERGY AND BUILDINGS, ISSN: 0378-7788, Vol.37, No.4, pp.301-310, 2005
15.Kossecka E., Kośny J., Correlations between time constants and structure factors of building walls, ARCHIVES OF CIVIL ENGINEERING, ISSN: 1230-2945, Vol.I, No.1, pp.175-188, 2004
Abstract:

Two methods are proposed of the wall specimen time constant estimation, for the hot box apparatus testing. Directions of the American standard ASTM C 1363-97 are discussed. First method assumes numerical calculation of the response factors and deriving time constant from their ratios. The second one makes use of the approximate relation between the time constant and the product of resistance, capacity and the structure factor. Correlations between time constants and structure factors are examined.

Affiliations:
Kossecka E.-IPPT PAN
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
16.Kossecka E., Kośny J., Z-transfer function coefficients for simulation of three-dimensional heat transfer in building walls, ARCHIVES OF CIVIL ENGINEERING, ISSN: 1230-2945, Vol.XLIX, No.4, pp.545-558, 2003
Abstract:

A method of derivation of the conduction z-transfer function coefficients from response factors, for three-dimensional wall assemblies, is described.Results of the conduction z-transfer function coefficients calculations are presented for clear walls and separated details which are listed in ASHRAE research project 1145-TRP: “Modeling Two- and Three-Dimensional Heat Transfer Through Composite Wall and Roof Assemblies in Hourly Energy Simulation Programs”. Resistances, three-dimensional response factors and so-called structure factors, have been computed using the finite-difference computer code HEATING 7.2. The z-transfer function coefficients were then derived from a set of linear equations, constituting relationships with the response factors, which were solved using the minimum-error procedure.Test simulations show perfect compatibility of the heat flux calculated using three-dimensional response factors and three-dimensional z-transfer function coefficients, derived from the response factors.

Affiliations:
Kossecka E.-IPPT PAN
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
17.Kossecka E., Kośny J., Influence of insulation configuration on heating and cooling loads in a continuously used building, ENERGY AND BUILDINGS, ISSN: 0378-7788, Vol.34, pp.321-331, 2002
Abstract:

This paper is focused on the energy performance of buildings containing massive exterior building envelope components. The effect of mass and insulation location on heating and cooling loads is analyzed for six characteristic wall configurations. Correlations between structural and dynamic thermal characteristics of walls are discussed. A simple one-room model of a building exposed to periodic temperature changes is analyzed to illustrate the effect of material configuration on the ability of a wall to dampen interior temperature swings. Whole-building dynamic modeling using DOE-2.1E is employed for the energy analysis of a one-story residential building with various exterior wall configurations for six different US climates. The best thermal performance is obtained when massive material layers are located at the inner side and directly exposed to the interior space. # 2002 Elsevier Science B.V. All rights reserved.

Keywords:

Building heat transfer, Structure factors, Frequency response, Thermal stability, Dynamic thermal performance

Affiliations:
Kossecka E.-IPPT PAN
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
18.Kośny J., Kossecka E., Multi-dimensional heat transfer through complex building envelope assemblies in hourly energy simulation programs, ENERGY AND BUILDINGS, ISSN: 0378-7788, DOI: 10.1016/S0378-7788(01)00122-0, Vol.34, pp.445-454, 2002
Abstract:

In most whole building thermal modeling computer programs like DOE-2, BLAST, or ENERGY PLUS simplified, one-dimensional, parallel path, descriptions of building envelope are used. For several structural and material configurations of building envelope components containing high thermal mass and/or two- and three-dimensional thermal bridges, one-dimensional analysis may generate serious errors in building loads estimation. The method of coupling three-dimensional heat transfer modeling and dynamic hot-box tests for complex wall systems with the whole building thermal simulations is presented in this paper. This procedure can increase the accuracy of the whole building thermal modeling.
Current thermal modeling and calculation procedures tend to overestimate the actual field thermal performance of today’s popular building envelope designs, which utilize modern building technologies (sometimes highly conductive structural materials) and feature large fenestration areas and floor plans with many exterior wall corners. Some widely used computer codes were calibrated using field data obtained from light weight wood frame buildings. The same codes are used now for thermal modeling of high mass buildings with significant heat accumulation effects. Also, the effects of extensive thermal shorts on the whole building thermal performance is not accurately reflected by the commonly used one-dimensional energy simulations that are the current bases for building envelopes and systems designing.

Keywords:

Thermal modeling, Thermal bridges, Hourly energy simulation programs

Affiliations:
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
Kossecka E.-other affiliation
19.Kossecka E., The effect of structure on dynamic thermal characteristics of multilayer walls, ARCHIVES OF CIVIL ENGINEERING, ISSN: 1230-2945, Vol.XLII, No.3, pp.351-369, 1996
Abstract:

The effect of internal thermal structure on dynamic characteristics of multilayer walls is analyzed. Mathematical basis constitute the integral formulae for the heat flow across the surfaces of the wall. The notion of structure factors is introduced and the conditions they impose on response factors are derived, using the Laplace transform method. Simple examples of walls, representing different types of thermal resistance and capacity distribution, are analyzed to illustrate general relations between the structure factors and the response factors.

Affiliations:
Kossecka E.-IPPT PAN
20.Bzowska D., Chyrczakowski S., Dzieniszewski W., Jędrzejuk H., Kossecka E., Laskowski L., Mołdach J., Podstawy modelowania procesów cieplno-wilgotnościowych w budynkach, Prace IPPT - IFTR Reports, ISSN: 2299-3657, No.15, pp.1-153, 1994
21.Bzowska D., Kossecka E., Analiza promieniowania słonecznego w Warszawie w aspekcie energetyki słonecznej, Prace IPPT - IFTR Reports, ISSN: 2299-3657, No.4, pp.1-49, 1993
22.Bzowska D., Kossecka E., Analiza probabilistyczna dobowych danych pogodowych dla Warszawy, Prace IPPT - IFTR Reports, ISSN: 2299-3657, No.10, pp.1-57, 1992
23.Kossecka E., Łoskot K., Prętczyński Z., Skrócony testowy sezon grzewczy (STSG), Prace IPPT - IFTR Reports, ISSN: 2299-3657, No.12, pp.1-28, 1992
24.Kossecka E., Matematyczna teoria defektów (Praca habilitacyjna), Prace IPPT - IFTR Reports, ISSN: 2299-3657, No.34, pp.1-57, 1974

List of recent monographs
1.
111
Kossecka E., Gawin D., inni, Program komputerowy WUFI i jego zastosowanie w analizach cieplno-wilgotnościowych przegród budowlanych, Wyd. Politechniki Łódzkiej, Łódź, Gawin D., Kossecka E. (Red.), pp.1-160, 2007
List of chapters in recent monographs
1.
12
Kośny J., Kossecka E., Yarbrough D., Thermal Conductivity 30 / Thermal Expansion 80 Joint Conferences, rozdział: Use of a Heat Flow Meter to Determine Active PCM Content in an Insulation, DEStech Publications, Inc., Daniela S. Gaal, Peter S. Gaal (Eds.), pp.642-650, 2010
2.
189
Kossecka E., Renewable energy: innovative technologies and new ideas, rozdział: Performance analysis of the PV system and wind turbine in the Research Centre Jabłonna, Warsaw University of Technology (Warsaw), Chwieduk D., Domański R., Jaworski M. (Eds.), pp.233-240, 2008
3.
223
Walczak T., Kossecka E., Fizyka budowli w teorii i praktyce, rozdział: Hybrydowa instalacja solarno - wiatrowa dla energooszczędnego domu jednorodzinnego, Politechnika Łódzka (Łódź), Kubik J. (Ed.), I, pp.338-345, 2005

Conference papers
1.Kossecka E., Kośny J., Thermal balance of a wall with PCM-enhanced thermal insulation, CESBP 2010, 1st Central European Symposium on Building Physics, 2010-09-13/09-15, Kraków (PL), pp.265-271, 2010
Abstract:

PCM–insulation mixtures functionas light weight thermal mass components.It is expected that these types of dynamic insulation systems will contribute to the objective of reducing energy use in buildings. In this paper, dynamic thermal properties of a material in which phase change occurs are analyzed, using the temperature-dependent specific heat model. Integral formula for the total heat flow in finite time interval, across the surface of a slab of the phase change material was derived. Simulations have been performed to analyze heat transfer through a light-weight wall assembly with PCM-enhanced insulation, in different external climate thermal conditions. Results of simulations indicate that for cyclic processes, the effect of PCM in an insulation layer results in time shifting of the heat flux maxima and not in reduction of the total heat flow. The heat gains maxima, resulting in high cooling loads, are shifted in time by about two hours and reduced upto 22% for not very high external sol-air temperatures.

Affiliations:
Kossecka E.-IPPT PAN
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
2.Kośny J., Yarbrough D., Miller W., Shrestha S., Kossecka E., Lee E., Numerical and Experimental Analysis of Building Envelopes Containing Blown Fiberglass Insulation Thermally Enhanced with Phase Change Material (PCM), CESBP 2010, 1st Central European Symposium on Building Physics, 2010-09-13/09-15, Kraków (PL), pp.272-278, 2010
Abstract:

Different types of Phase Change Materials (PCMs) have been tested as dynamic components in buildings for at least 4 decades. Most of historical studies have found that PCMs enhance building energy performance. The PCMs store energy and alter the temperature gradient through the insulated cavity because they remain at a nearly constant temperature during the melting and solidifying stages. The use of organic PCMs to enhance the performance of thermal insulation in the building envelope was studied at the Oak Ridge National Laboratory during 2000 – 2009. PCMs reduce heat flow across an insulated region by absorbing and desorbing heat (charging and discharging) in response to ambient temperature cycles. The amount of heat that can be stored in PCMs is directly related to the heat of fusion of the material, which is between 116 J/g to 163 J/g (or 50 to 70 Btu/lb) for the most - popular micro encapsulated paraffinic PCMs, or fatty acid materials used in this research. This paper presents experimental and numerical results from the long-term thermal performance study focused on blown fiber glass insulation modified with a novel spray-applied micro encapsulated PCM. Experimental results are reported for both laboratory - scale and full - size building elements tested in the field. Test work was followed by detailed whole building Energy Plus simulations in order to generate energy performance data for different US climates.

Affiliations:
Kośny J.-Fraunhofer Center for Sustainable Energy Systems CSE (US)
Yarbrough D.-R&D Services (US)
Miller W.-Oak Ridge National Laboratory (US)
Shrestha S.-Oak Ridge National Laboratory (US)
Kossecka E.-IPPT PAN
Lee E.-Oklahoma State University (US)