Temat: Waste-heat recovery - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Usage of thermosyphon for avoiding of low grade corrosion on the surfaces of air heaters and increasing of thermal efficiency of steam generators PK-38-4
Autorzy:: Iliev, I.
Lazarov, S.
Powiązania:: https://bibliotekanauki.pl/articles/175291.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: heat pipes
thermosyphon
waste heat recovery
air heater
Opis:: The paper presents and analyzes new type air heater, which uses the thermosyphon’s technology, aims to replace the existing horizontal tubular air heater of first-degree for steam generators Nos.5,6,7 and 8 at TPP Maritsa East-2 in Bulgaria. The main advantage of the air heater with heat pipes is the ability to lower the temperature of exhaust gases to levels that are impossible for the conventional tubular air heaters, thus increasing the efficiency of the steam generator. Along with the increased energy efficiency, reductions in CO2, SOx and NOx emissions into the atmosphere are achieved. The preheating of the air, used for air combustion by recirculation relieving the operation and improving the combustion in the steam generator, is also reduced.
Źródło:: Transactions of the Institute of Fluid-Flow Machinery; 2014, 126; 211-219
0079-3205
Pojawia się w:: Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Reliability and availability modelling of a retrofitted Diesel-based cogeneration system for heat and hot water demand of an isolated Antarctic base
Autorzy:: Coronado, Miguel
Kadoch, Benjamin
Contreras, Jorge
Kristjanpoller, Fredy
Powiązania:: https://bibliotekanauki.pl/articles/27312786.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:: reliability
availability
waste heat recovery
combined heat and power
Opis:: The reduction of greenhouse gas emissions is a relevant challenge for a sustainable development. Waste heat could be used to produce hot water by using a recovery system. This article studies the availability of a combined heat and power systems (CHP) in extreme area (Antarctic) through the integration of a waste heat recovery system with a diesel generator to produce hot water. The reliability and availability principles are incorporated to explore how the profile of hot water consumption and the hot water storage tank size affect system availability. Different combined heat and power systems are thus classified, and their availability indexes modelled by adopting the continuous Markov approach and the state space model. The results indicate that the CHP systems availability is strongly influenced by the daily hot water demand profile. As a useful recommendation, one of the considerations for increasing availability, reducing costs and greenhouse gas emissions with the CHP system is to include a hot water tank in the analysis.
Źródło:: Eksploatacja i Niezawodność; 2023, 25, 3; art. no. 169779
1507-2711
Pojawia się w:: Eksploatacja i Niezawodność
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Conceptual Design and Performance Analysis of an Exhaust Gas Waste Heat Recovery System for a 10000TEU Container Ship
Autorzy:: Ma, Zheshu
Yang, Dong
Guo, Qiang
Powiązania:: https://bibliotekanauki.pl/articles/259008.pdf
Data publikacji:: 2012
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: exergy efficiency
marine diesel engine
thermal efficiency
waste heat recovery system
Opis:: According to operation characteristics of the main engine 9K98ME-C7, a combined turbines-exhaust gas waste heat recovery system is proposed to recover waste heat and increase system energy efficiency. Thermodynamic models based on the first thermodynamic law and the second thermodynamic law are formulated. The superheated steam yield, the total electric power yield, the first thermodynamic law efficiency, the exergy efficiency at different exhaust gas boiler working pressure, and the variation of the exergy efficiency under different feed water temperature and different steam turbine back pressure are analyzed. Thermodynamic results indicate that the most appropriate exhaust gas boiler pressure is 0.8MPa for studied main engine and the total thermal efficiency with combined turbines arrangement has climbed up to 53.8% from 48.5%.
Źródło:: Polish Maritime Research; 2012, 2; 31-38
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Exploration of a model thermoacoustic turbogenerator with a bidirectional turbine
Autorzy:: Korobko, Volodymyr
Serbin, Serhiy
Le, Huu Cuong
Powiązania:: https://bibliotekanauki.pl/articles/34604689.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: waste heat recovery
ship power plant
thermoacoustics
thermoacoustic engine
bidirectional turbine
Opis:: The utilisation of the thermal emissions of modern ship power plants requires the development and implementation of essentially new methods of using low-temperature waste heat. Thermoacoustic technologies are able to effectively use lowtemperature and cryogenic heat resources with a potential difference of 500–111 K. Thermoacoustic heat machines (TAHMs) are characterised by high reliability, simplicity and environmental safety. The wide implementation of thermoacoustic energy-saving systems is hampered by the low specific power and the difficulties of directly producing mechanical work. An efficient approach to converting acoustic energy into mechanical work entails the utilisation of axial pulse bidirectional turbines within thermoacoustic heat engines. These thermoacoustic turbogenerators represent comprehensive systems that consist of thermoacoustic primary movers with an electric generator actuated by an axial-pulse bidirectional turbine. The development of such a thermoacoustic turbogenerator requires several fundamental issues to be solved. For this purpose, a suitable experimental setup and a 3D computational fluid dynamics (CFD) model of a thermoacoustic engine (TAE) with bidirectional turbines were created. The research program involved conducting physical experiments and the CFD modelling of processes in a TAE resonator with an installed bidirectional turbine. The boundary and initial conditions for CFD calculations were based on empirical data. The adequacy of the developed numerical model was substantiated by the results of physical experiments. The CFD results showed that the most significant energy losses in bidirectional turbines are manifested in the output grid of the turbine.
Źródło:: Polish Maritime Research; 2023, 4; 102-109
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Możliwości odzysku ciepła odpadowego ze ścieków w gospodarstwach rolno-hodowlanych
The possibilities of waste heat recovery from sewage in livestock farms
Autorzy:: Czarniecki, D.
Słyś, D.
Powiązania:: https://bibliotekanauki.pl/articles/126121.pdf
Data publikacji:: 2015
Wydawca:: Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:: odzysk ciepła odpadowego
pompa ciepła
gnojowica
waste heat recovery
heat pump
pig slurry
Opis:: Rolnictwo jest jednym z sektorów gospodarki, w których pompa ciepła ma coraz szersze zastosowanie. Dzieje się to zwłaszcza w sytuacjach, gdy może być ona wykorzystana w układzie alternatywnym zarówno do celów grzewczych, jak i chłodniczych, a także gdy istnieje możliwość wykorzystania ciepła odpadowego. Hodowla trzody chlewnej jest jedną z najistotniejszych gałęzi produkcji rolniczej w Polsce od niepamiętnych czasów. W rozwoju nowoczesnych technologii chowu zwierząt niezbędna staje się potrzeba poszukiwania nowych rozwiązań, których zastosowanie przyczyni się do racjonalizacji wykorzystania energii, a dzięki temu również do ochrony powietrza atmosferycznego. Odpowiedzią na taki trend jest odzysk energii odpadowej ze ścieków. Celem niniejszego artykułu jest przedstawienie możliwych rozwiązań oraz przybliżenie korzyści, jakie można osiągnąć poprzez zastosowanie instalacji umożliwiającej odzysk ciepła ze ścieków do zaopatrzenia gospodarstwa rolno-hodowlanego w ciepłą wodę użytkową. Przeanalizowano możliwe rozwiązania powyższych instalacji.
Agriculture is one of the sectors of the economy where the heat pump is becoming more widely used. This is particularly true in situations where it may be used in an alternative arrangement, both for heating and cooling, mainly as the possibility to use waste heat. Pig farming is one of the most important branches of agricultural production in Poland since immemorial period. The development of modern husbandry animal technology the need to seek new solutions seems to be imperative. The use of it will contribute to the rationalization of energy use and it will result in air protection. The answer to this trend is the recovery of waste energy from wastewater. The purpose of this article is to present possible solutions and bring benefits which can be achieved through the use of an installation for heat recovery from waste water so as to supply the livestock farm in hot water. The analysis of possible examples of above systems has been done.
Źródło:: Proceedings of ECOpole; 2015, 9, 2; 571-579
1898-617X
2084-4557
Pojawia się w:: Proceedings of ECOpole
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Waste heat recovery from the air preparation room in a paint shop
Autorzy:: Adamkiewicz, Andrzej
Nikończuk, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/240142.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: waste heat recovery
air compression
paint shop
ciepło odpadowe
sprężanie powietrza
lakiernia
Opis:: The policy of sustainable development seeks to improve energy efficiency of industrial equipment. Efforts to improve energy efficiency also apply to the paint shops, where the recovery of waste heat is sought. The main source of a large amount of low-temperature waste heat in the paint shop is the spray booth. The second place where a large amount of low temperature waste heat is released is the room where the compressed air is prepared. Low energy efficiency of air compressors requires a large electric power supply. As a result, the emitted large heat fluxes become waste energy of the technological process. Heat is equivalent to up to 93% of the electric power supplied in the air compression process. There are solutions for recovering heat from compressors coming from the oil cooling water, but then the waste heat from the cooling of the compressed air and from the electric motor is released into air in the room. A method for recovering low-temperature waste heat from the air preparation room by means of an air-source heat pump has been proposed. An energy balance of the air compression and dehumidification process for the paint shop was made. A Matlab’s built-in numerical model includes air compressor and dehumidifier, heat recovery and accumulation for the purposes of use in the spray booth. A simulation experiment was carried out on the effectiveness of heat recovery from the air preparation room. The use of combined energy management in paint shops was proposed.
Źródło:: Archives of Thermodynamics; 2019, 40, 3; 229-241
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: An innovative method for waste heat recovery from flue gas treatment system through an additional economizer
Autorzy:: Iliev, Iliya Krastev
Kowalczyk, Tomasz
Beloev, Hristo Kvanov
Terziev, Angel Kostadinov
Jesionek, Krzysztof Jan
Badur, Janusz
Powiązania:: https://bibliotekanauki.pl/articles/2091368.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: waste heat recovery
flue gases
feasibility study
battery emulsifier second generation
bag filters
Opis:: The usage of wet methods for flue gas dedusting from coalfired boilers is associated with significant heat losses and water resources. Widespread emulsifiers of the first and second generation are satisfactory in terms of flue gas cleaning efficiency (up to 99.5%), but at the same time do not create conditions for deeper waste heat recovery, leading to lowering the temperature of gases. Therefore, in the paper, an innovative modernization, including installing an additional economizer in front of the scrubber (emulsifier) is proposed, as part of the flue gas passes through a parallel bag filter. At the outlet of the emulsifier and the bag filter, the gases are mixed in a suitable ratio, whereby the gas mixture entering the stack does not create conditions for condensation processes in the stack.
Źródło:: Archives of Thermodynamics; 2022, 43, 2; 37--59
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Improving the efficiency of a gas-fueled ship power plant using a Waste Heat Recovery metal hydride system
Autorzy:: Cherednichenko, Oleksandr
Tkach, Mykhaylo
Timoshevskiy, Boris
Havrysh, Valerii
Dotsenko, Serhii
Powiązania:: https://bibliotekanauki.pl/articles/135623.pdf
Data publikacji:: 2019
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: waste heat recovery
low-speed engine
metal-hydride
hydrogen
LNG-powered ship
total waste heat utilization factor
Opis:: Due to environmental, energy, and operating cost constraints, the number of liquefied natural gas (LNG)–powered ships is increasing. To avoid decreasing the thermal efficiency of two-stroke, low-speed diesel engines, high-pressure gas injection is used. The specific energy consumption of a gas fuel compressor is around 0.35 kWh/kg, which has a negative impact on the efficiency of ship power plants. To reduce the primary energy consumption of a gas fuel supply system, waste heat recovery (WHR) technologies may be used. This study investigated whether WHR metal hydride technology was suitable for improving the efficiency of low-grade heat waste in marine diesel engines. The key factors of this technology were revealed, and the design scheme was described. Working fluids were also analyzed, and a mathematical model of a WHR metal hydride plant was developed, and the results were represented. The calculations showed that the above technology could increase the operating power of a propulsion plant by 5.7–6.2%. The results demonstrate the possibility of applying WHR metal hydride equipment for gas fuel compressor drives in LNG-powered ships. The novelty of this study lies in the investigation of metal hydride technology for application in the waste heat recovery systems of LNG-powered ships.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 59 (131); 9-15
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Significant waste properties in terms of applicability in the power industry
Autorzy:: Nowak, Martyna
Stelmach, Sławomir
Sajdak, Marcin
Powiązania:: https://bibliotekanauki.pl/articles/207401.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: RDF fuel
fuel from waste
waste heat recovery
paliwo RDF
paliwo z odpadów
odzysk energii odpadowej
Opis:: The aim of the article is to present the physical and chemical properties of the refuse derived fuel (RDF) substrates, which have a significant impact on the energy recovery process in power plants. The experimental part includes technical (moisture and ash content, net and gross calorific values) and elemental analyses (sulfur, chlorine and mercury content), biomass and non-biomass concentration in the samples. In order to carry out the analysis of reactor slagging and fouling risk, chemical composition of the ash and characteristic ash fusion temperatures were determined. The waste samples are heterogeneous material and their properties are diversified – the moisture content ranges from 1.8 to 29.2 wt. %, the net calorific value from 17.231 to 28.307 MJ/kg, the ash content in the samples from 7.7 to 31.2 wt. %. The S content is in the range from 0.04 to 0.58 wt. %, the Cl content from 0.58 to 2.11 wt. % and the Hg content in the samples from 0.09 to 0.20 mg/kg. It can be observed, that the tested waste is a demanding fuel, because of its unfavorable fouling and slagging properties, which are directly related to the content of oxides with the basic properties.
Źródło:: Environment Protection Engineering; 2019, 45, 4; 75-85
0324-8828
Pojawia się w:: Environment Protection Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Investigation of the influence of capillary effect on operation of the loop heat pipe
Autorzy:: Mikielewicz, D.
Błauciak, K.
Powiązania:: https://bibliotekanauki.pl/articles/240739.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: loop heat pipe
capillary forces
waste heat recovery
rurka ciepła z pętlą obiegową
siły kapilarne
wykorzystanie energii odpadowej
Opis:: In the paper presented are studies on the investigation of the capillary forces effect induced in the porous structure of a loop heat pipe using water and ethanol ad test fluids. The potential application of such effect is for example in the evaporator of the domestic micro-CHP unit, where the reduction of pumping power could be obtained. Preliminary analysis of the results indicates water as having the best potential for developing the capillary effect.
Źródło:: Archives of Thermodynamics; 2014, 35, 3; 59-80
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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