Temat: cogeneration energy - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Energy scavenging in a vehicles exhaust system
Autorzy:: Lubikowski, K.
Radkowski, S.
Szczurowski, K.
Wikary, M.
Powiązania:: https://bibliotekanauki.pl/articles/246763.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cogeneration of energy
exhaust system
thermoelectric generator
Opis:: Present- day development of power transmission systems, especially the ones based on combustion engines, is trying to cope with the issue of improving the energy efficiency of energy processing systems. One of the directions is to use the techniques of thermal energy recovery from an engine's exhaust system. Vast part of the energy produced while burning the air- fuel mixture is lost in the cooling and exhaust systems. Research in this area was conducted by numerous teams, both abroad and in Poland, while focusing on use of Peltirea cells. The results of their research demonstrated small efficiency of these cells. In this paper, the authors have focused on modifications of the exhaust system in order to improve heat exchange between the exhaust system's elements and TEG. The research was conducted while using the ECOTEC 1.8 litre engine from Opel, the X18XE model. The engine was installed in a testbed, in the mechatronic lab at the Faculty of Automotive and Construction Machinery Engineering (SIMR) of Warsaw University of Technology. Spartan HE923 radiators were installed on the cold end of the module. The paper presents the results of the research related to interworking of TEG's with the exhaust system's heat-generating elements of various shapes. The paper reviews the energy efficiency of TEG depending on diverse parameters of gas flow. A parallel system has been assumed (controlled stream and pressure of the flowing exhaust gases without any interference as regards the speed of the of combustion engine). The factor-related experiment accounts for the influence that the pressure and temperature difference, depending on the volume and discharge of exhaust fumes, have on the efficiency of TEG for the same temperature. The results of the experiment are presented in the last section of the article.
Źródło:: Journal of KONES; 2012, 19, 3; 253-261
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Research and simulation work of TEG in cogeneration task of the exhaust system
Autorzy:: Chmielewski, A.
Lubikowski, K.
Radkowski, S.
Szczurowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/246212.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cogeneration of energy
exhaust system
thermoelectric generator
Opis:: One of the main directions of development of power transmission systems in vehicles involves improvement of energy efficiency of combustion engines, especially reduction of the loss related to waste heat in cooling and exhaust systems. The traditional role of the exhaust system is to remove exhaust gases from a combustion engine and muffle the noise created during the engine’s operation. Relevant distribution of temperatures along the entire length of the exhaust system is a very important element in such a complex structure. The examples could be the particulate solids filter or the converter which have to reach a relevant temperature to operate properly while the temperature’s growth is simultaneously restricted due to the limitations associated with the materials used. The research was conducted while using the ECOTEC 1.8 litre engine from Opel, the X18XE model. The engine was installed in a tested, in the mechatronic lab at the Faculty of Automotive and Construction Machinery Engineering (SIMR) of Warsaw University of Technology. The paper reviews the energy efficiency of TEG depending on deferent parameters of gas stream an weather conditions. This is original value of this paper. The results of the experiment are presented in the last section of the article.
Źródło:: Journal of KONES; 2013, 20, 2; 41-47
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Thermal analyses of exhaust system on combustion engine
Autorzy:: Dybała, J.
Lubikowski, K.
Rokicki, K.
Szulim, P.
Wikary, M.
Powiązania:: https://bibliotekanauki.pl/articles/241765.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cogeneration of energy
exhaust system
thermoelectric generator
Opis:: Nowadays there are more and more discussions on acquisition of energy from sources other than natural sources of energy. Many scientific research centres deal with the issue of energy recovery as well as use of energy from renewable sources. The communities associated with the automotive industry devote a lot of attention to the issue of improving the energy efficiency of vehicles. Since a combustion engine uses less than half of the energy produced during the combustion process, thus the issues of recovery of thermal energy and its conversion into electrical energy evoke increasing interest. The article presents the process of examination of the temperature of the exhaust system in a car engine operating in a laboratory environment. Measuring equipment was used to the temperatures' determine. Analysis of distribution of temperatures in the exhaust system creates grounds for rational selection of the places where the thermal energy recuperation systems should be installed. At present, the possibilities of recovery of thermal energy are still seriously restricted by the properties of the materials of which the elements of the thermal energy recovery systems are made. High propensity of these elements to thermal defects is a serious problem in practical application of these materials in thermal energy recovery systems. The results obtained in an experiment serve as the basis for determining the locations where thermoelectric generators should be installed while accounting for their thermal limitations.
Źródło:: Journal of KONES; 2012, 19, 4; 173-178
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Biomass energy potential : green energy for the university of Warmia and Mazury in Olsztyn
Autorzy:: Górecki, R.
Piętak, A.
Meus, M.
Kozłowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/241599.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: biomass
biogas
bio-gasworks
cogeneration
renewable energy sources
electrical energy
heat energy
gasification
Opis:: The combined production of electrical and heat energy is one of the preferred, by national policy, activities associated with energy production from renewable sources. The simultaneous generation of heat and electrical or mechanical energy during the same technological process is called cogeneration or combined heat and power, CHP. The presented methodological approach includes an analysis of the data recorded in the research stations and agricultural production stations owned and managed by the University of Warmia and Mazury (UWM) in Olsztyn, performed in order to determine the energy potential of biomass and other renewable energy sources (RES). Depending on the substrates available for UWM in Olsztyn, it is proposed to take a varied approach towards the use of RES by means of biotechnological and thermal biomass conversion. The first method is based on the production of biogas from biomass with the subsequent use of the generated biogas in the process of cogeneration. In the second method, heat energy generated by gasification in a syngas generator will be used for transformation with a Stirling’s engine into mechanical energy and finally into electrical (30%) and heat (60%) energy. The concept of a “Green University” is the result of the performed analyses.
Źródło:: Journal of KONES; 2013, 20, 4; 99-106
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The demand analysis of the biogas plant with chp system on substrate, the aim to obtain required electrical and thermal power
Autorzy:: Piętak, A.
Meus, M.
Nitkiewicz, S.
Powiązania:: https://bibliotekanauki.pl/articles/246798.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: biogas
biogas plant
cogeneration
electrical power
renewable energy
thermal power
transportation
Opis:: Due to the ending resources of fossil fuels, as well as instability of the political situation on the world, especially in countries that are their main supplier, governments of poor countries in resources are forced to seek alternative sources of energy. Currently the most commonly used raw material to produce an electrical and thermal power in Poland are coal and lignite, However, in a result of an increase of their prices and an exacerbated by the EU of regulations about an emission of the greenhouse gas, emerged trends, that aim to transform the energy sector through the implementation of technologies based on alternative energy sources. The main focus is to put on renewable energy sources. The methodology, which is contained in this paper, presents a way to designation the demand of the biogas plant with CHP system on substrate of agricultural origin, the aim to obtain required electrical and thermal power. Moreover, the paper presents a simplified diagram of anaerobic fermentation, which is the basis of biogas production, as well as an illustrative diagram of a biogas plant with CHP system. In this paper also was mentioned the possibility of application biogas for transportation purposes.
Źródło:: Journal of KONES; 2012, 19, 3; 334-344
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Energy costs savings by use of micro - CHP units in domestic households
Autorzy:: Błasiński, T.
Kaźmierczak, A.
Krakowian, K.
Cienciała, M.
Powiązania:: https://bibliotekanauki.pl/articles/242051.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: micro cogeneration
CHP issues
Stirling engines
cost savings
primary energy savings
Opis:: Prices of thermal and electric energy delivered to households are constantly increasing, and it will probably not change over the next few years. Due to this fact, people had been forced to find different ways to reduce costs of buying energy. The paper contains description of the most popular systems which are already in use from many years and some innovative systems which are implemented now, or which may be probably installed in nearly future – for example: internal combustion engines, Stirling engines, proton exchange membrane fuel cells, gas turbines, engines with Rankine cycle, etc. Each of mentioned above appliances is necessary to create CHP system which advantages and disadvantages are also described. In this publication, the most promising units have been compared to show their performance, flexibility, profitability and range of using ability. In this paper, approximate money and energy savings that may occur by using modern solutions compared to traditional systems are also shown. As always, during design and development of this kind of devices, there are a lot of problems related to various issues. Main problems and potential solutions have been also presented in this article. In summary further research, directions are suggested due to improve performance of this kind of systems.
Źródło:: Journal of KONES; 2013, 20, 3; 41-46
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Possibilities of applications of stirling engine in cogeneration systems
Autorzy:: Boruta, G.
Drogosz, P.
Nitkiewicz, S.
Piętak, A.
Powiązania:: https://bibliotekanauki.pl/articles/247308.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Stirling engines
cogeneration systems
trigeneration systems
micro agropower plants
power grid
distributed energy resource (DER)
Opis:: This study takes into account engines working in Stirling cycles in cogeneration systems. Stirling engines have been selected because of their characteristics of exploitation. The possibility of their use in cogeneration systems is more favourable in comparison with other combustion engines because they can avoid usage of industrial and transport fuels. The Stirling engines enable the use of biomass, agricultural and other waste energy sources in micro tri- and cogeneration plants dedicated for the use in agriculture and forestry. Considering such applications, three types of usage structures of Stirling engines are proposed. All three structures are dedicated to install in small residential or farm buildings. These three types of structure are named: “type master”, “type slave” and “type customer”. In accordance with the proposed structures, different types of engine constructions are discussed, too. At the same time, the authors described the dependences between Stirling engines and electric power energy systems. The arguments of grid power systems and dispersed energy resource in text were reviewed. After that overview, some legal problems are discussed. Finally, the conception of independent dispersed micro agropower system and some technical equipment were described. Technical realization of the proposed conception requires: proper type, installation and usage of Stirling engines and proper expectations of achieved results.
Źródło:: Journal of KONES; 2012, 19, 2; 67-75
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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