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Tytuł:
Analiza możliwości technicznych wykorzystania energii wód geotermalnych do produkcji energii elektrycznej dla otworu Bańska PGP-3
Analysis of THE technical possibilities in using geothermal energy FOR electricity generation for THE Banska PGP-3 borehole
Autorzy:
Tomczyk, B.
Powiązania:
https://bibliotekanauki.pl/articles/203698.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
energia geotermalna
energia elektryczna
ORC
cykl Kaliny
silnik Stirlinga
ogniwo termoelektryczne
geothermal energy
electricity
Kalina cycle
thermocouple
Stirling engine
Opis:
Analiza możliwości wykorzystania energii wód geotermalnych do produkcji energii elektrycznej została wykonana dla otworu Bańska PGP-3. Charakterystyka układów opartych na organicznym cyklu Rankine’a (ORC) oraz cyklu Kaliny. Koncepcja wykorzystania silnika Stirlinga oraz ogniw termoelektrycznych. Dla układów działających zgodnie z ORC i cyklem Kaliny – analiza potencjalnych sprawności układów, w zależności od parametrów chłodzenia – na podstawie doświadczeń z innych instalacji przemysłowych i badawczych. Dla pozostałych – analiza sprawności oparta na wzorach matematycznych. Wyniki – sprawności od 3% dla układów opartych na termoparach, 5% dla ogniw Peltiera, 7% dla ORC, 9% dla cyklu Kaliny, do 11,6% dla silników Stirlinga. Zestawienie rocznych teoretycznych produkcji energii elektrycznej – przy założeniu schłodzenia wód geotermalnych o 10 K. Wyniki – produkcja roczna na poziomie 0,9 GWh dla instalacji opartych na termoparach, 1,3 GWh dla ogniw Peltiera, 1,8 GWh dla ORC, 2,3 GWh dla cyklu Kaliny oraz 2,6 GWh dla układów opartych na silnikach Stirlinga.
An analysis of the possibilities of using geothermal energy to generate electricity, calculated for the Banska PGP-3 borehole. Description of a typical solution – Organic rankine cycle, Kalina cycle. Concept of using a Stirling engine and thermoelectric cells. For typical solutions – an analysis of potential efficiency, based on cooler parameters. For other solutions – mathematical formulas calculation. Results – efficiency 3% for thermocouple, 5% for Peltier cells, 7% for ORC, 9% for Kalina cycle, 11,6% for Stirling engine. Summary – theoretical generation for of electricity for established parameters. Results – 0,9 GWh for thermocouple, 1,3 GWh for Peltier cells, 1,8 GWh for ORC, 2,3 GWh for Kalina cycle and 2,6 GWh for Stirling engine.
Źródło:
Technika Poszukiwań Geologicznych; 2016, R. 55, nr 2, 2; 117-134
0304-520X
Pojawia się w:
Technika Poszukiwań Geologicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of properties of a laboratory model of a Gamma Stirling engine
Autorzy:
Fekieta, D.
Powiązania:
https://bibliotekanauki.pl/articles/115503.pdf
Data publikacji:
2013
Wydawca:
Fundacja na Rzecz Młodych Naukowców
Tematy:
Stirling engine
efficiency
mechanical power
Opis:
The main subject of the article is the analysis of the characteristics of a Stirling engine. The article presents a general principle of operation of the engine, its basic types and properties. The paper contains a description of the construction of a laboratory model of the engine and the results of the experimental studies. The basic criterion which guided the designing and building the engine was to maximize the energy density, efficiency, while minimizing the cost of materials – to this end the engine has been designed and constructed so as to allow replacement of particular components. The conducted experimental studies have shown that the best parameters of the engine has a cylinder made of iron, a steel flywheel and a steel radiator. The brake efficiency of the engine for this configuration was 16%.
Źródło:
Challenges of Modern Technology; 2013, 4, 1; 47-52
2082-2863
2353-4419
Pojawia się w:
Challenges of Modern Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of biomass-powered stirling engines in cogenerative systems
Autorzy:
Szewczyk, M.
Trzepieciński, T.
Powiązania:
https://bibliotekanauki.pl/articles/410897.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
zastosowanie biomasy
silnik Stirlinga
kogeneracja (chp)
biomass use
CHP
cogenerative system
Stirling engine
Opis:
Due to the properties of different kinds of renewable energy as sources of energy for small farms in Podkarpackie province, cogenerative biomass technologies have proved the most suitable for its supplying. Special solutions based on direct combustion boiler coupled with biomass-powered Stirling engine are the most interesting. The characteristics and examples of use of cogenerative system based on Stirling engine are presented.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2012, 1, 2; 53-56
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Stirling engine type alpha powered by the recovery energy on vessels
Autorzy:
Kropiwnicki, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/260612.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
Stirling engine
recovery energy
efficiency
regenerator
Opis:
The Stirling engine is a device in which thermal energy is transformed into mechanical energy without any contact between the heat carrier and the working gas enclosed in the engine. The mentioned feature makes this type of engine very attractive for the use of the recovery energy taken from other heat devices. One of the potential applications of Stirling engines is the use of thermal energy generated in the ship’s engine room for producing electricity. The work presents the concept of the Stirling engine type alpha powered by the recovery energy. The model of Stirling engine developed in this work allows a quantitative assessment of the impact of the design features of the engine, primarily the heat exchange surfaces and the volume of control spaces, on the achieved efficiency and power of the engine. Using an iterative procedure, Stirling engine simulation tests were carried out taking into account the variable structural features of the system. The influence of the size of the heater and the cooler, as well as the effectiveness of the regenerator and the temperature of the heat source on the efficiency and power produced by the Stirling engine have been presented.
Źródło:
Polish Maritime Research; 2020, 1; 96-106
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bench testing and simulation model of a cogeneration system with a stirling engine
Autorzy:
Chmielewski, A.
Gumiński, R.
Lubikowski, K.
Radkowski, S.
Szulim, P.
Powiązania:
https://bibliotekanauki.pl/articles/242327.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Stirling engine
Alpha
Simulink
Sankey diagram
helium and nitrogen
cogeneration
Opis:
Cogeneration systems using a Stirling engine [2] are currently being developed and promoted by the European Union [1]. On the other hand, the EU climatic package obligates Polish energy producers to buy 100% CO2 emission rights from 2020 onwards. At that time, according to the experts a ton of CO2 could reach the price of 63.5 Euro. Attention is drawn to the fact that it is only then that nuclear power plants will become profitable, in the same way as wind power plants. This could result in substantial growth of energy prices, both for the economy and for households [3]. The paper presents the experimental research of a cogeneration system with a one-way Alpha type Stirling engine. The impact of the upper heat source and the type of working gas (helium and nitrogen) on the load capacity of the cogeneration system was studied. Based on a Sankey diagram, the power spread of the cogeneration system was analysed. On the basis of experimental research, a model was created of a cogeneration system consisting of the following submodels: Stirling engine of the second order, belt transmission, electric motor and an electrochemical battery. The Stirling 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. Furthermore, the impact of regenerator efficiency on the efficiency of the Stirling Engine was examined, which in turns impacts the efficiency of the entire cogeneration system.
Źródło:
Journal of KONES; 2013, 20, 3; 97-104
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cold Energy Utilization by Stirling Engine
Autorzy:
Wiśniewski, Krzysztof
Grzebielec, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2195733.pdf
Data publikacji:
2020
Wydawca:
Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
Tematy:
cryogenics
cold energy
Stirling engine
kriogenika
zimna energia
silnik Stirlinga
Opis:
Liquefied natural gas (LNG) will play an important role in the World, as evidenced by the constantly growing LNG market. One of its branches is the small-scale LNG market, which includes supplies to satellite gas networks, factories, or as fuel for car and bunker, fuel for vessels. LNG is mainly redistributed by trucks and then regassify in atmospheric air vaporizes (AAV), where the gas is heated by atmospheric air and the cold is thereby lost. Effective utilization of this energy, will allow the LNG technology to be more competitive, as well as to recover some of the energy lost in the liquefaction process. The purpose of this article is to explore the possibility of utilizing the cold energy from the LNG regasification process to drive a Stirling engine. For the aim of this analysis, an analytical method were used - Schmidt analysis, which assumes an isothermal processes of gas expansion and compression inside the engine, as well as excellent regenerator performance. Helium was used as a working factor. It was assumed, that the engine was arranged in accordance with alpha geometry. Average monthly air temperatures and average hourly temperatures for the coldest and warmest day of the year were applied to the model using macros and Excel worksheets. Those temperatures are the average from many years for Warsaw. Based on the applied data, the amount of regassified LNG, power of the entire system, indicated engine power, engine and system efficiency, as well as temperature in cylinders (and thus in heat exchangers) were calculated. The results showed the reasonability of using LNG as the lower heat source, and atmospheric air as the upper heat source. The system generates sufficient power, in all conditions, to meet the system energy consumption requirements i.e. fan. It produces significant excess amount of energy, which varies on the external conditions, i.e. the air temperature. In addition, the system meets the requirements for regassify amount of LNG at the end user.
Źródło:
Modern Engineering; 2020, 4; 140--155
2450-5501
Pojawia się w:
Modern Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of dual flywheels with connecting rods for gamma-type Stirling engine
Autorzy:
Lekchaum, S.
Locharoenrat, K.
Powiązania:
https://bibliotekanauki.pl/articles/200723.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Stirling engine
Stirling cycle
flywheels
connecting rod
silnik Stirlinga
cykl Stirlinga
koła zamachowe
korbowód
Opis:
A gamma-type Stirling engine, based on a dual flywheels’ concept, was designed and fabricated. Optimized design of the engine, with connecting rods, was introduced to achieve a steady state of the Stirling engine cycle. Performances of the engine were therefore presented in terms of piston motion, inertia force, angular speed, pressure-volume diagram and temperature difference. It was found that optimum length of 45 mm from the connecting rod was able to reach the maximum output mechanical speed of 738 rpm at the maximum inertia force of 0.5 N. The engine offered thermal efficiency of 46.15% and total output power of 1.21 W under the temperature difference of 267 K. In the future, this design is expected to prove useful for applications in portable generators.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 6; 919-924
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic effectiveness evaluation of the free piston Stirling engine-based micro-combined heat and power unit in relation to classical systems
Autorzy:
Uchman, Wojciech
Remiorz, Leszek
Kotowicz, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/240538.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heating systems
cost analysis
stirling engine
micro-cogeneration
system ciepłowniczy
analiza kosztów
mikrokogeneracja
Opis:
In this article, a comparison of economic effectiveness of various heating systems dedicated to residential applications is presented: a natural gas-fueled micro-cogeneration (micro-combined heat and power – µCHP) unit based on a free-piston Stirling engine that generates additional electric energy; and three so-called classical heating systems based on: gas boiler, coal boiler, and a heat pump. Calculation includes covering the demand for electricity, which is purchased from the grid or produced in residential system. The presented analyses are partially based on an experimental investigation. The measurements of the heat pump system as well as those of the energy (electricity and heat) demand profiles in the analyzed building were conducted for a single-family house. The measurements of the µCHP unit were made using a laboratory stand prepared for simulating a variable heat demand. The overall efficiency of the µCHP was in the range of 88.6– 92.4%. The amounts of the produced/consumed energy (electricity, heat, and chemical energy of fuel) were determined. The consumption and the generation of electricity were settled on a daily basis. Operational costs of the heat pump system or coal boiler based heating system are lower comparing to the micro-cogeneration, however no support system for natural gas-based µCHP system is included.
Źródło:
Archives of Thermodynamics; 2019, 40, 1; 71-83
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From Beale Number to Pole Placement Design of a Free Piston Stirling Engine
Autorzy:
Zare, S.
Tavakolpour-Saleh, A.
Omidvar, A.
Powiązania:
https://bibliotekanauki.pl/articles/140258.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
free-piston Stirling engine
linear dynamics
roots loci
Beale number
silnik Stirlinga z wolnym tłokiem
dynamika liniowa
linie pierwiastkowe
liczba Beale
Opis:
In this paper, pole placement-based design and analysis of a free piston Stirling engine (FPSE) is presented and compared to the well-defined Beale number design technique. First, dynamic and thermodynamic equations governing the engine system are extracted. Then, linear dynamics of the free piston Stirling engine are studied using dynamic systems theory tools such as root locus. Accordingly, the effects of variations of design parameters such as mass of pistons, stiffness of springs, and frictional damping on the locations of dominant closed-loop poles are investigated. The design procedure is thus conducted to place the dominant poles of the dynamic system at desired locations on the s-plane so that the unstable dynamics, which is the required criterion for energy generation, is achieved. Next, the closed-loop poles are selected based on a desired frequency so that a periodical system is found. Consequently, the design parameters, including mass and spring stiffness for both power and displacer pistons, are obtained. Finally, the engine power is calculated through the proposed control-based analysis and the result is compared to those of the experimental work and the Beale number approach. The outcomes of this work clearly reveal the effectiveness of the control-based design technique of FPSEs compared to the well-known approaches such as Beale number.
Źródło:
Archive of Mechanical Engineering; 2017, LXIV, 4; 499-518
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja tłokowego silnika o spalaniu wewnętrznym z regeneracją ciepła
Concept of internal combustion engine with heat regeneration
Autorzy:
Łutowicz, M.
Cuper-Przybylska, D.
Powiązania:
https://bibliotekanauki.pl/articles/222447.pdf
Data publikacji:
2013
Wydawca:
Akademia Marynarki Wojennej. Wydział Dowodzenia i Operacji Morskich
Tematy:
silnik spalinowy
silnik Stirlinga
regeneracja ciepła
engine
Stirling engine
heat recovery
Opis:
W artykule omówiono koncepcję silnika, który będzie realizował obieg zbliżony do obiegu silnika Stirlinga w układzie β, w którym dostarczenie ciepła nastąpi poprzez spalanie wewnętrzne. Umożliwi to uzyskanie w impulsie temperatury do 2500 K, podczas gdy w silniku Stirlinga czynnik roboczy ogrzewa się tylko do temperatury ścianek wymiennika ciepła i rzadko przekracza temperaturę 1000 K. Wyższa temperatura czynnika roboczego zapewni wyższą sprawność silnika. Spaliny po oddaniu ciepła do ścianek komory spalania i regeneratora zostaną zastąpione zimnym powietrzem. Zmagazynowane ciepło zostanie wykorzystane do podgrzania sprężonego powietrza w następnym cyklu. Zapewni to wyższą sprawność niż w silniku Diesla.
The paper discusses the concept of an engine that will perform circuit similar to the Stirling engine cycle in the system β, which will provide heat by burning inside. This will allow reaching temperature up to 2500 K in impulse, while in a Stirling engine the working medium is heated only to the temperature of the walls of the heat exchanger and rarely exceeds the temperature of 1000 K. The higher temperature of the working medium will provide higher efficiency. After transferring the heat to the walls of the combustion chamber and regenerator the exhaust gases will be replaced by cold air. The stored heat is used to heat the compressed air in the next cycle. This will ensure higher efficiency than the Diesel engine.
Źródło:
Zeszyty Naukowe Akademii Marynarki Wojennej; 2013, R. 54 nr 3 (194), 3 (194); 119-128
0860-889X
Pojawia się w:
Zeszyty Naukowe Akademii Marynarki Wojennej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling and application of Stirling engine with renewable sources in electricity production
Modelowanie i zastosowanie silnika Stirlinga napędzanego odnawialnymi źródłami energii do produkcji energii elektrycznej
Autorzy:
Ďurčanský, P.
Nosek, R.
Powiązania:
https://bibliotekanauki.pl/articles/402258.pdf
Data publikacji:
2018
Wydawca:
Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:
Stirling engine
internal combustion engine
biomass
boiler
concentrating solar collector
silnik Stirlinga
biomasa
kocioł
koncentryczny kolektor słoneczny
Opis:
The rapid development of humanity and the backward technologies lead to an increasing need for energy. In the last few decades, studies have been published that rising energy consumption has a negative impact on the environment, resulting in an increasing trend in the use of renewable energy sources. Nowadays, there are a number of systems that use the energy of water, wind, sun, and earth heat, different solutions for increasing energy production are investigated in the world. One of the ways is utilization of renewable energy sources in cogeneration devices - combined production of electricity and heat in one device, with a high overall efficiency. The article deals with principle of hot-air engine, its basic calculation and use in combined production of heat and electricity from biomass.
Szybki rozwój ludzkości i technologii prowadzi do wzrostu zapotrzebowania na energię. Na przestrzeni ostatnich kilku dekad opublikowano prace wskazujące, że wzrost konsumpcji energii ma negatywny wpływ na środowisko, co prowadzi do wzrostu zainteresowania odnawialnymi źródłami energii. Obecnie wiele układów wykorzystuje energię wody, wiatru, słońca i ziemi, a różne rozwiązania zwiększające produkcję energii są przedmiotem badań na świecie. Jednym ze sposobów wykorzystania odnawialnych źródeł energii są układy kogeneracyjne – skojarzona produkcja ciepła i energii elektrycznej w jednym urządzeniu o zwiększonej sprawności całkowitej. Artykuł przedstawia zasadę działania silnika na ciepłe powietrze, podstawowe zasady obliczeń i wykorzystanie w skojarzonej produkcji energii cieplnej i elektrycznej z biomasy.
Źródło:
Structure and Environment; 2018, 10, 4; 386-389
2081-1500
Pojawia się w:
Structure and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of hybrid renewable energy system consisting of microcogeneration unit and photovoltaic installation
Autorzy:
Kowalski, P.
Powiązania:
https://bibliotekanauki.pl/articles/175187.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
linear free piston stirling engine
biomass
photovoltaic
renewable energy
energy production and consumption profiles
microgeneration
Opis:
In the wake of much needed energy transformation, European Union urges member states to take action for supporting microgeneration. As Poland introduced novel to Renewable Energy Act in mid-2018, microgeneration systems of up to 50 kWe installed can benefit from a prosumer scheme. This paper investigates scenarios for installation of a hybrid system composed of a microcogeneration unit and a photovoltaic installation, applied to an existing public building located in northern Poland. The building is heated by a 32 kW oil-fired boiler and gets all it’s 60.9 MWh of the annual electricity needs from the distribution system operator grid. The actual state was assumed as a reference scenario. The microgeneration unit is composed of a wood pellet-fired boiler of 25 kW nameplate capacity and the linear free piston Stirling engine of 1 kW electric nameplate power. The microcogeneration unit works together with 24 kWp rooftop photovoltaic system, configured in East-West setup. Modelling heat and power demand and production via the energy conversion units was conducted in the commercial modelling software package. The models were built based on the actual data and time series for external weather conditions. Two scenarios were analysed – one where the basic setup of microcogeneration unit and photovoltaic system is topped up with 3 m3 buffer tank and another, where instead of buffer, 10 kW electrical boiler is used for peak loads. Relevant simplified investment and operation expenditures were calculated over a period of 10 years. Calculations proved that despite very little electricity surpluses available for the prosumer support scheme, both scenarios bring positive cash flows within 5.5 and 7.1 years, respectively.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2018, 141; 3-30
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New ways of renewable sources utilization for electricity production
Autorzy:
Durčanský, P.
Pilát, P.
Nosek, R.
Jandačka, J.
Powiązania:
https://bibliotekanauki.pl/articles/402157.pdf
Data publikacji:
2015
Wydawca:
Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:
Stirling engine
internal combustion engine
biomass
boiler
concentrating solar collector
Opis:
Nowadays, different solutions for increasing energy production are investigated in the world. One of the ways is utilization of renewable energy sources in cogeneration devices - combined production of electricity and heat in one device, with a high overall efficiency. The article deals with principle of hot-air engine, its basic division and use in combined production of heat and electricity from biomass. The basic principle of engine is conversion of heat into mechanical energy, which is subsequently used for production of electricity. In the contribution is presented Stirling engine, which is driven by thermal energy from a concentrating solar collector and from biomass boiler.
Źródło:
Structure and Environment; 2015, 7, 1; 43-47
2081-1500
Pojawia się w:
Structure and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Notes on the Operation of the Stirling Engine
Autorzy:
Mysłowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/411223.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
Stirling engine
Opis:
The problem of using the Stirling engine for traction purposes has attracted researchers and constructors for many years. Unfortunately, the current state of the art and its structural properties do not allow for its use on a wider scale. apart from the prototype test vehicles
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 1; 55-57
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obliczenia numeryczne i analiza wytrzymałości silnika Stirlinga typu alfa
Numerical calculations and strength analysis of the Stirling engine of alpha type
Autorzy:
Płoński, M.
Grzejda, R.
Powiązania:
https://bibliotekanauki.pl/articles/268670.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
kogeneracja
obieg termodynamiczny
silnik Stirlinga
mechanizm korbowy
cogeneration
thermodynamic cycle
Stirling engine
crank mechanism
Opis:
Przedstawiono model bryłowy i obliczenia silnika Stirlinga typu alfa. Scharakteryzowano podstawowe typy silników Stirlinga. Zaprezentowano model I rzędu (model Schmidta) obiegu termodynamicznego dla wybranego silnika, na podstawie którego dobrano warunki obciążenia dla zbudowanego modelu bryłowego tego silnika. Przeprowadzono statyczną analizę wytrzymałości mechanizmu roboczego silnika z korpusem dla trzech położeń wału korbowego z wykorzystaniem metody elementów skończonych. Przedstawiono wybrane wyniki badań numerycznych modelu mechanizmu roboczego silnika z korpusem w postaci mapy naprężeń zredukowanych wywołanych zadanym ciśnieniem czynnika roboczego. Na ich podstawie wykazano poprawność konstrukcji mechanizmu roboczego silnika i jego korpusu według przyjętego kryterium wytrzymałościowego.
The solid model and calculations of the Stirling engine of alpha type are presented. The basic types of single acting Stirling engines (called as: alpha, beta, gamma) are characterised. The first order model (Schmidt’s model) of the thermodynamic cycle for the selected engine is shown. On its basis, the loading conditions for the constructed solid model of this engine are chosen. Static analysis of the strength of the working mechanism of the engine and its body is carried out for three positions of the crankshaft (for the upper position of the piston in the cold cylinder, aberration of the crankshaft by 30 degrees from the upper position of the piston and aberration of the crankshaft by 90 degrees from the upper position of the piston). The calculations are made using the finite element method (FEM). Selected results of simulation studies of the FEMmodel of the working mechanism of the engine and its body in the form of reduced stress maps in the model under specified pressure of the working medium are presented. On their basis, the correctness of the structure of the modelled working mechanism of the engine and its body has been demonstrated according to the adopted strength criterion.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2018, 61; 65-68
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 23

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