Relevant bibliographies by topics / HRSG

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'HRSG'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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Journal articles on the topic "HRSG"

1

Santos-Rosa, H., and A. Aguilera. "Isolation and genetic analysis of extragenic suppressors of the hyper-deletion phenotype of the Saccharomyces cerevisiae hpr1 delta mutation." Genetics 139, no. 1 (January 1, 1995): 57–66. http://dx.doi.org/10.1093/genetics/139.1.57.

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Abstract The HPR1 gene of Saccharomyces cerevisiae is involved in maintaining low levels of deletions between DNA repeats. To understand how deletions initiate in the absence of the Hpr1 protein and the mechanisms of recombination leading to deletions in S. cerevisiae, we have isolated mutations as suppressors of the hyper-deletion phenotype of the hpr1 delta mutation. The mutations defined five different genes called HRS for hyper-recombination suppression. They suppress the hyper-deletion phenotype of hpr1 delta strains for three direct repeat systems tested. The mutations eliminated the hyper-deletion phenotype of hpr1 delta strains either completely (hrs1-1 and hrs2-1) or significantly (hrs3-1, hrs4-1 and hrs5-1). None of the mutations has a clear effect on the levels of spontaneous and double-strand break-induced deletions. Among other characteristics we have found are the following: (1) one mutation, hrs1-1, reduces the frequency of deletions in rad52-1 strains 20-fold, suggesting that the HRS1 gene is involved in the formation of RAD52-independent deletions; (2) the hrs2-1 hpr1 delta mutant is sensitive to methyl-methane-sulfonate and the single mutants hpr1 delta and hrs2-1 are resistant, which suggests that the HPR1 and HRS2 proteins may have redundant DNA repair functions; (3) the hrs4-1 mutation confers a hyper-mutator phenotype and (4) the phenotype of lack of activation of gene expression observed in hpr1 delta strains is only partially suppressed by the hrs2-1 mutation, which suggests that the possible functions of the Hpr1 protein in gene expression and recombination repair can be separated. We discuss the possible relationship between the HPR1 and the HRS genes and their involvement in initiation of the events responsible for deletion formation.
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Feng, Hong Cui, Wei Zhong, Yan Ling Wu, and Shui Guang Tong. "The Effects of Parameters on HRSG Thermodynamic Performance." Advanced Materials Research 774-776 (September 2013): 383–92. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.383.

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Changes of inlet temperature, mass flow rate and composition of flue gas, or of water/steam pressure and temperature in heat recovery steam generator (HRSG), all will modify the amount of waste heat recovered from flue gas; this brings forward a desire for the optimization of the design of HRSG. For single pressure HRSGs with given structures and specified values of inlet temperature, mass flow rate and composition of flue gas, the steam mass flow rate and gas outlet temperature of the HRSG are analyzed as functions of several parameters. This analysis is based on the laws of thermodynamics, incorporated into the energy balance equations for the heat exchangers. Those parameters are superheated steam pressure and temperature, feedwater temperature and pinch point temperature difference. It was shown that the gas outlet temperature could be lowered by selecting appropriate water/steam parameters and pinch point temperature difference. While operating with the suggested parameters, the HRSG can generate more high-quality steam, a fact of great significance for waste heat recovery from wider ranges of sources for better energy conservation.
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Jungbauer, D. E., J. F. Unruh, S. Rose, and P. J. Pantermuehl. "Sound Power and Pressure Level Measurements in the Inlet and Outlet of an HRSG Duct." Journal of Engineering for Gas Turbines and Power 117, no. 2 (April 1, 1995): 259–65. http://dx.doi.org/10.1115/1.2814089.

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The ever-increasing size of cogeneration facilities has mandated the need for noise abatement in the design stage. Many noise projection models are available to the industry for predicting noise levels in and adjacent to new installations. However, the models all require accurate source noise information if valid noise predictions are to be expected. As a consequence of designing one of the world’s largest cogeneration installations involving eight Model W-701 turbine units and their Heat Recovery Steam Generators (HRSGs), it became apparent that the attention between the exhaust of the turbine and the outlet of the HRSGs was not well known. Not having this information posed potentially expensive noise abatement modifications during the design and construction phases. In order to verify the adequacy of scaling studies from a W-501 turbine and HRSG to the W-701 system, a comprehensive field test of an existing W-501 installation was conducted. This paper describes the design of an acoustic intensity and sound pressure probe to operate inside the high-temperature ductwork, the access engineering required, data acquisition, and final results concerning noise attenuation across the HRSG.
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Yohana, Eflita, and Rahmat Julyansyah. "ANALISIS TOTAL EFISIENSI HRSG (HEAT RECOVERY STEAM GENERATOR) PADA COMBINE CYCLE POWER PLANT (CCPP) 120 MW PT. KRAKATAU DAYA LISTRIK." ROTASI 18, no. 2 (April 1, 2016): 28. http://dx.doi.org/10.14710/rotasi.18.2.28-31.

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Heat Recovery Steam Generator (HRSG) adalah suatu komponen kesatuan antara turbin gas dan turbin uap pada sistem combine cycle power plant. HRSG berfungsi sebagai alat yang memanfaatkan energi panas gas buang dari gas turbin untuk memanaskan air pada tube - tube yang berada di dalam HRSG, sehingga air berubah menjadi uap panas lanjut untuk memutar turbin uap [1]. Analisa dilakukan pada HRSG Pembangkit Listrik Tenaga Gas dan Uap melalui perhitungan total efisiensi berdasarkan temperatur, tekanan, dan laju massa yang masuk dan keluar HRSG. Selain itu analisa ini untuk membandingkan total efisiensi HRSG pada saat commisioning process dengan bulan Januari 2016. Data temperatur, tekanan, dan laju massa yang diperoleh telah tercatat melalui layanan system operasi interface. Dari hasil perhitungan nantinya akan diketahui nilai total efisiensi HRSG commisioning sebesar 93,31% dengan nilai efisiensi high pressure sebesar 69,62% dan nilai efisiensi low pressure sebesar 23,69%, dibandingkan dengan nilai total efisiensi HRSG pada bulan Januari 2016 sebesar 79,88% dengan nilai efisiensi high pressure sebesar 66,47% dan nilai efisiensi low pressure sebesar 13,41%. Terjadi penurunan nilai efisiensi saat commisioning dengan bulan Januari 2016 yaitu sebesar 13,43%.
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Brendel, Raphael. "Suetons Viten der iulisch-claudischen Kaiser (Tiberius, Caligula, Claudius)." Das Historisch-Politische Buch 66, no. 3 (September 1, 2018): 390–92. http://dx.doi.org/10.3790/hpb.66.3.390.

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C. Suetonius Tranquillus: Tiberius. Lateinisch / Deutsch, übersetzt und hrsg. von Ursula Blank-SangmeisterC. Suetonius Tranquillus: Caligula. Lateinisch / Deutsch, übersetzt und hrsg. von Ursula Blank-SangmeisterC. Suetonius Tranquillus: Claudius. Lateinisch / Deutsch, übersetzt und hrsg. von Ursula Blank-Sangmeister
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Beasley, O. W., E. C. Hutchins, P. R. Predick, and J. M. Vavrek. "Induced Draft Fan Innovation for Heat Recovery Steam Generators." Journal of Engineering for Gas Turbines and Power 116, no. 2 (April 1, 1994): 402–5. http://dx.doi.org/10.1115/1.2906834.

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A first of its kind, induced draft (ID) heat recovery steam generators (HRSG) have been in service at a cogeneration facility since 1991. A preliminary engineering study considered a forced draft (FD) fan to supply combustion air to the HRSG duct burners (when the combustion turbine (CT) is out of service) as a traditional design; however, the study indicated that the FD fan may require the HRSG duct burner to be shut off following a CT trip and re-ignited after the FD fan was in service. Although the induced draft HRSG design cost more than the FD fan design, the induced draft design has improved the cogeneration facility’s steam generation reliability by enabling the HRSG to remain in service following a CT trip. This paper briefly summarizes the preliminary engineering study that supported the decision to select the ID fan design. The paper also discusses the control system that operates the fresh-air louvers, duct burners, HRSG, and ID fan during a CT trip. Startup and operating experiences are presented that demonstrate the effectiveness of the design. Lessons learned are also summarized for input into future induced draft HRSG designs.
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Hegde, N., I. Han, T. W. Lee, and R. P. Roy. "Flow and Heat Transfer in Heat Recovery Steam Generators." Journal of Energy Resources Technology 129, no. 3 (March 24, 2007): 232–42. http://dx.doi.org/10.1115/1.2751505.

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Computational simulations of flow and heat transfer in heat recovery steam generators (HRSGs) of vertical- and horizontal-tube designs are reported. The main objective of the work was to obtain simple modifications of their internal configuration that render the flow of combustion gas more spatially uniform. The computational method was validated by comparing some of the simulation results for a scaled-down laboratory model with experimental measurements in the same. Simulations were then carried out for two plant HRSGs—without and with the proposed modifications. The results show significantly more uniform combustion gas flow in the modified configurations. Heat transfer calculations were performed for one superheater section of the vertical-tube HRSG to determine the effect of the configuration modification on heat transfer from the combustion gas to the steam flowing in the superheater tubes.
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Erans, María, Dawid Hanak, Jordi Mir, Edward Anthony, and Vasilije Manovic. "Process modelling and techno-economic analysis of natural gas combined cycle integrated with calcium looping." Thermal Science 20, suppl. 1 (2016): 59–67. http://dx.doi.org/10.2298/tsci151001209e.

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Calcium looping (CaL) is promising for large-scale CO2 capture in the power generation and industrial sectors due to the cheap sorbent used and the relatively low energy penalties achieved with this process. Because of the high operating temperatures the heat utilisation is a major advantage of the process, since a significant amount of power can be generated from it. However, this increases its complexity and capital costs. Therefore, not only the energy efficiency performance is important for these cycles, but also the capital costs must be taken into account, i.e. techno-economic analyses are required in order to determine which parameters and configurations are optimal to enhance technology viability in different integration scenarios. In this study the integration scenarios of CaL cycles and natural gas combined cycles (NGCC) are explored. The process models of the NGCC and CaL capture plant are developed to explore the most promising scenarios for NGCC-CaL integration with regards to efficiency penalties. Two scenarios are analysed in detail, and show that the system with heat recovery steam generator (HRSG) before and after the capture plant exhibited better performance of 49.1% efficiency compared with that of 45.7% when only one HRSG is located after the capture plant. However, the techno-economic analyses showed that the more energy efficient case, with two HRSGs, implies relatively higher cost of electricity (COE), 44.1?/MWh, when compared to that of the reference plant system (33.1?/MWh). The predicted cost of CO2 avoided for the case with two HRSGS is 29.3 ?/ton CO2.
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Kotowicz, Janusz, and Marcin Job. "Thermodynamic and economic analysis of a gas turbine combined cycle plant with oxy-combustion." Archives of Thermodynamics 34, no. 4 (December 1, 2013): 215–33. http://dx.doi.org/10.2478/aoter-2013-0039.

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Abstract This paper presents a gas turbine combined cycle plant with oxy-combustion and carbon dioxide capture. A gas turbine part of the unit with the operating parameters is presented. The methodology and results of optimization by the means of a genetic algorithm for the steam parts in three variants of the plant are shown. The variants of the plant differ by the heat recovery steam generator (HRSG) construction: the singlepressure HRSG (1P), the double-pressure HRSG with reheating (2PR), and the triple-pressure HRSG with reheating (3PR). For obtained results in all variants an economic evaluation was performed. The break-even prices of electricity were determined and the sensitivity analysis to the most significant economic factors were performed.
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Daffa, Muhammad, Arifia Ekayuliana, and Fitri Wijayanti. "Analisis Kebocoran Tube Outlet Header LP Evaporator HRSG dengan Metode RCFA." Jurnal Mekanik Terapan 1, no. 1 (October 19, 2020): 35–44. http://dx.doi.org/10.32722/jmt.v1i1.3329.

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Ditemukan adanya kebocoran pada tube outlet header LP evaporator HRSG. Kebocoran tersebut terjadi di lokasi pipa masuk ke header sisi keluar dan pada belokan pipa menuju header. Kebocoran pada pipa dapat menyebabkan steam drum tidak mampu memenuhi syarat minimum level air sehingga mengakibatkan sistem proteksi pada HRSG memberikan sinyal untuk trip dan sistem menjadi open cycle yang berdampak pada penurunan daya mampu atau derating. Hal tersebut apabila tidak ditangani maka dapat menyebabkan kerugian, dimana seharusnya gas hasil pembakaran dapat termanfaatkan secara maksimal. Untuk mengatasi hal tersebut, diperlukan metode pemecahan masalah sampai ke akarnya menggunakan Ishikawa Diagram. Penelitian ini bertujuan untuk mengetahui akar penyebab terjadinya kerusakan tube outlet header LP evaporator HRSG dan mengetahui solusi untuk mengatasi kebocoran HRSG agar tidak terulang. Hasil penelitian menunjukkan bahwa dari kajian 5M yang memiliki faktor paling berpengaruh dalam kaitan terjadinya kebocoran adalah karena faktor material; nilai kriteria fleksibilitas pipa melebihi batas yaitu sebesar 0,04, ketebalan pipa telah mendekati batas minimum yaitu sebesar 2,58 mm; pengoperasian fluktuatif, dan management; waktu pemeliharaan melewati batas equivalent operating hour (EOH). Untuk mengatasi kebocoran yang terjadi pada pipa HRSG dapat dilakukan pengecekan terhadap distribusi aliran gas hasil pembakaran, menjaga kualitas air, mengoperasikan HRSG secara base load dan pemeliharaan sesuai EOH.
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Dissertations / Theses on the topic "HRSG"

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Dlouhá, Kristýna. "Návrh HRSG kotle." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-401508.

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This master’s thesis deals with the design of a heat recovery steam generator. The introductory part of the thesis is dedicated to waste heat boilers, their division and their utilization in combined cycles gas turbine. In the following chapter, an analysis of the existing combined heat and power plant operation is performed. In the next part of the thesis, the conceptual layout of the new source is designed. Subsequently, the thermal calculation of the boiler is carried out as well as the design of individual heat exchanging surfaces. The sixth chapter deals with the strength calculation of the boiler and the outer piping, chambers and drum are designed here. At the end of the thesis there are described off-design states of the new combined cycle gas turbine.
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Primes, Alois. "Modularní horizontální kotel – HRSG." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443235.

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This thesis deals with the design of a Heat Recovery Steam Generator (HRSG). Theintroductory part is devoted to a brief description of the boiler, the specified parametersand the compilation of the temperature profile. The main computational part of thiswork is divided into 6 parts. The first contains preparatory calculations, including thecalculation of boiler eiciency. In the second part, a flue gas duct is designed. This isfollowed by a thermal calculation of the boiler for all heat exchange surfaces. The last 3parts deal with the design of the drum, piping and the loss of boiler draft calculation.
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Kraus, Anna, Holger Kuße, and Marina Scharlaj. "Bergmann, Anka (Hrsg.): Fachdidaktik Russisch: Buchbesprechung." De Gruyter, 2015. https://tud.qucosa.de/id/qucosa%3A71173.

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Kompendien und Einführungen zur Fachdidaktik des Englischen, Französischen oder auch des Deutschen sind schon lange eine Selbstverständlichkeit. Für das Russische gilt das im deutschsprachigen Raum leider nicht. Die vorliegende Publikation ist deshalb sehr zu begrüßen, und ganz zurecht stellt die Herausgeberin Anka Bergmann im Vorwort fest, dass mit diesem von namhaften Fachdidaktikerinnen und Fachdidaktikern des Russischen gemeinschaftlich erstellten Band ein echtes Desiderat im deutschsprachigen Raum beseitigt wurde. Neben zahlreichen allgemeinfachdidaktischen Fragestellungen, wie sie besonders im Teil II behandelt werden, werden Spezifika des Russischunterrichts angesprochen wie etwa die Integration von Schülern mit russischsprachigem Hintergrund im Russischunterricht oder die Geschichte und der gegenwärtige Status des Russischunterrichts im deutschsprachigen Raum.
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Maršík, Jaroslav. "Dvoutlaký horizontální kotel na odpadní teplo (HRSG)." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232157.

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The Master’s thesis dealing with design of heat recovery steam generator with two pressure levels is split into nine sections. The first section describes the design and the layout of HRSG. The second part deals with heat calculation. The third section deals with design of flue-gas duct. The fourth part describes designs of individual heating surfaces, including steam superheaters, vaporizers and economizer. Next section shows the real temperature diagram and choice of the materials. The seventh section describes the calculation of outer pipelines and the eighth part deals with the drums design. The last section deals with the calculation of draft loss of steam generator.
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Smolinský, Petr. "Dvoutlaký horizontální kotel na odpadní teplo (HRSG)." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232159.

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This master‘s thesis deals with the design of horizontal heat recovery steam generators (HRSG) with two pressure levels after a combustion turbine. In the introduction part is performed thermal calculation and proposal of a heat transfer surfaces. Furthermore, are suggested dimensions of the drums and pipes for flooding and transferring. The emphasis is placed on the fulfillment the required parameters of steam and flue gas at HRSG outlet. At the end is calculated loss of boiler draft and made technical documentation a drawing of the boiler.
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Kaspers, Birte. "Till Müller-Heidelberg u. a. (Hrsg.), Grundrechte-Report 2009 ; Heiner Bielefeldt u. a. (Hrsg.), Jahrbuch Menschenrechte 2009 / [rezensiert von] Birte Kaspers." Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2009/4017/.

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Rezensierte Werke: Till Müller-Heidelberg u. a. (Hrsg.), Grundrechte-Report 2009 – Zur Lage der Bürger- und Menschenrechte in Deutschland, Fischer Taschenbuch Verlag, 2009, 272 Seiten, ISBN 978- 3-596-18373-9, 9,95 €; Heiner Bielefeldt u. a. (Hrsg.), Jahrbuch Menschenrechte 2009 – Religionsfreiheit, Böhlau Verlag, 2008, 293 Seiten, ISBN 978-3-205-78190-5, 19,90 €.
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Weiß, Norman. "Janusz Synwnides (Hrsg.), Human Rights / [rezensiert von] Norman Weiß." Universität Potsdam, 2002. http://opus.kobv.de/ubp/volltexte/2011/5512/.

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rezensiertes Werk: Synwnides, Janusz (Hrsg.): Human Rights Human Rights: New Dimensions and Challenges . - Ashgate : Aldershot et al, 1998. (ISBN 1-84014-426-2) Human Rights: Concept and Standards. - Ashgate : Aldershot et al, 2000. (ISBN 0-7546-2023-9)
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Hartlieb, Johannes Pawis Reinhard. "Johann Hartliebs "Alexander" : eingeleitet und hrsg. von Reinhard Pawis." München ; Zürich : Artemis Verlag, 1991. http://catalogue.bnf.fr/ark:/12148/cb37383179s.

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Weiß, Norman. "Helmut Volger (Hrsg.), Lexikon der Vereinten Nationen / [rezensiert von] Norman Weiß." Universität Potsdam, 2000. http://opus.kobv.de/ubp/volltexte/2011/5470/.

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Weiß, Norman. "Ferdinand J.M. Feldbrugge (Hrsg.): The Law's Beginnings / [rezensiert von] Norman Weiß." Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2011/5618/.

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Books on the topic "HRSG"

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Appenzellerland: Hrsg. Peter Keckeis. Zurich: Fretz, 1985.

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Cornelius, Tacitus. Agricola - Germania / hrsg. Alfons Stadele. Zurich: Artemis & Winkler, 1991.

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Hubatschek, Gerhard. Waffensysteme der Bundeswehr / Gerhard Hubatschek (Hrsg.). Frankfurt: Report, 1999.

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Meid, Volker. Literaturlexikon: [A - Lei] / hrsg. von Volker Meid. Gütersloh: Bertelsmann Lexikon Verl., 1992.

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Brandl, Ernst. WAG: Wertpapieraufsichtsgesetz ; Kommentar/ Ernst Brandl ; Gerhard Saria (Hrsg.). 2nd ed. Wien: Springer, 2010.

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Wickel, Werner. Register zu Neuer Anglistenspiegel, hrsg. v. Th. Finkenstaedt. Augsburg: Universität Augsburg, 1988.

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Wedler, Hans. Korperliche Krankheit und Suizid / Hans Jurgen Moller (Hrsg.). Regensburg: Verlag S. Roderer, 1991.

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Marhold, Harmut. Gedichte und Prosa des Impressionismus: Hrsg. von Hartmut Marhold. Stuttgart: Philipp Reclam, 1991.

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Güse, Ernst-Gerhard. Bodo Baumgarten: Venus und Vulkanus / hrsg. Ernst-Gerhard Güse. Saarbrücken: Saarland Museum, 1992.

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Golowin, Serius. Prahlerei, Lug und Trug / A. Guggenbuhl, M. Kunz, Hrsg. Zurich: Schweizer Spieel-Verl., 1987.

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Book chapters on the topic "HRSG"

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Honneth, Axel. "Institut für Sozialforschung (Hrsg.)." In Schlüsseltexte der Kritischen Theorie, 259–63. Wiesbaden: VS Verlag für Sozialwissenschaften, 2006. http://dx.doi.org/10.1007/978-3-531-90227-2_14.

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Nass, Klaus Otto. "Nachwort und Ausblick (Hrsg.)." In Die Vermessung des Eisernen Vorhangs, 355–61. Herbolzheim: Centaurus Verlag & Media, 2010. http://dx.doi.org/10.1007/978-3-86226-945-7_24.

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Küstermann, Roland, Matthias Kunkel, André Mersch, and Anne Schreiber. "Erratum zu: Selbststudium im digitalen Wandel." In Selbststudium im digitalen Wandel, E1. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-31279-4_32.

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Mahl, Bernd. "Hans-Peter Bayerdörfer (Hrsg.): Im Auftrieb." In Goethe-Jahrbuch, 375–76. Stuttgart: J.B. Metzler, 2004. http://dx.doi.org/10.1007/978-3-476-02860-0_42.

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Jeßing, Benedikt. "Matthias Luserke (Hrsg.): Goethe nach 1999." In Goethe-Jahrbuch, 391–92. Stuttgart: J.B. Metzler, 2002. http://dx.doi.org/10.1007/978-3-476-02861-7_41.

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Mieth, Annemarie. "Bodo Lecke (Hrsg.): Dauer im Wechsel?" In Goethe-Jahrbuch, 341–44. Stuttgart: J.B. Metzler, 2001. http://dx.doi.org/10.1007/978-3-476-02786-3_48.

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Koch, Rainer. "Michael Hofmann (Hrsg.): Literatur, Ästhetik, Geschichte." In Peter Weiss Jahrbuch 2, 159–64. Wiesbaden: VS Verlag für Sozialwissenschaften, 1993. http://dx.doi.org/10.1007/978-3-663-11034-7_9.

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Schlaffer, Hannelore. "Ortrud Gutjahr (Hrsg.): Westöstlicher und nordsüdlicher Divan." In Goethe-Jahrbuch, 389–91. Stuttgart: J.B. Metzler, 2002. http://dx.doi.org/10.1007/978-3-476-02861-7_40.

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Dahnke, Hans-Dietrich. "Bernd Leistner (Hrsg.): Die Aktualität eines Unzeitgemäßen." In Goethe-Jahrbuch, 392–94. Stuttgart: J.B. Metzler, 2002. http://dx.doi.org/10.1007/978-3-476-02861-7_42.

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König, René, and Clemens Albrecht. "Anthony Giddens, Hrsg., Emile Durkheim: Selected Writings*." In Emile Durkheim, 181–82. Wiesbaden: Springer Fachmedien Wiesbaden, 2013. http://dx.doi.org/10.1007/978-3-531-18826-3_17.

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Conference papers on the topic "HRSG"

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Radovich, Michael. "Agile HRSG." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98255.

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This paper describes a modification to a standard reheat HRSG (Heat Recovery Steam Generator) enabling it startup faster. It also allows the plant to operate the gas turbine in simple cycle and to operate the HRSG as a stand-alone auxiliary boiler. An external fan, pre-heater and burner are connected to the diffuser of the HRSG. When the gas turbine is out of service, the fan and burner are actuated, providing enough flue gas to allow the HRSG to operate as a small auxiliary boiler. Steam produced during this operation pressurizes the drum, heats the steam lines provides sealing steam for the steam turbine, and allows a vacuum to be maintained in the condenser. The system is designed to produce enough steam to synchronize a steam turbine. When the HRSG, condenser, circulating water system or steam turbine is removed from service, the HRSG is drained and the fan turned on without the burner, mixing tempering air to the exhaust of the gas turbine operating in a simple cycle mode. The tempering air lowers the flue gas temperature enough to allow the operation of the SCR system while preventing damage to the carbon steel tubes of the HRSG.
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Gülen, S. Can. "HRSG Duct Firing Revisited." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75768.

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Duct firing in the heat recovery steam generator (HRSG) of a gas turbine combined cycle power plant is a commonly used method to increase output on hot summer days when gas turbine airflow and power output lapse significantly. The aim is to generate maximum possible power output when it is most needed (and, thus, more profitable) at the expense of power plant heat rate. In this paper, using fundamental thermodynamic arguments and detailed heat and mass balance simulations, it will be shown that, under certain boundary conditions, duct firing in the HRSG can be a facilitator of efficiency improvement as well. When combined with highly-efficient aeroderivative gas turbines with high cycle pressure ratios and concomitantly low exhaust temperatures, duct firing can be utilized for small but efficient combined cycle power plant designs as well as more efficient hot-day power augmentation. This opens the door to efficient and agile fossil fuel-fired power generation opportunities to support variable renewable generation.
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Brandstetter, Gottfried, and Christian Daublebsky. "Investigations on Dynamic Behaviour of Heat Recovery Steam Generators Carried Out With a Commercial Software Program." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27380.

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Heat recovery steam generators (HRSGs) downstream of gas turbines are often used in combination with process steam applications. A HRSG trip is more severe in applications with highly important process steam than in applications producing only electricity. HRSGs in important process steam applications can be equipped with a supplementary and fresh air firing system having the capacity of replacing at least the total waste heat coming from the gas turbine. A fresh air firing system provides the capability of keeping the HRSG in operation without the gas turbine running. If the HRSG is required to stay in operation even after a gas turbine trip, a change over from waste heat firing to fresh air firing has to follow immediately. The gas turbine speed rundown after a trip occurs very rapidly, so the change over procedure has to be carried out within a few seconds to avoid a HRSG shut down. Enormous gradients of heat input and steam mass flow extracted from the HRSG occur in such cases. This will cause the HRSG parameters to deviate considerably from the steady state, thus conventional HRSG calculations cannot be used in such cases. The thermal inertia of the HRSG needs to be considered, which requires the use of special software programs. A commercial boiler software program with a dynamic calculation module for unsteady calculations was utilized and a comparison with data gathered from the operation of the HRSG was performed. The boiler performance parameters during change over procedures were investigated in detail using extensive measurements at an Austrian steel mill (VOESTALPINE). The parameters of this investigation were compared with calculation results gained from a commercial software program for validation purposes. This comparison will enable predictions to be made for future projects with sufficient accuracy, which will allow the risk to be reduced when offering guarantees in this regard.
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Fontaine, Pascal. "Cycling Tolerance: Natural Circulation Vertical HRSGs." In International Joint Power Generation Conference collocated with TurboExpo 2003. ASMEDC, 2003. http://dx.doi.org/10.1115/ijpgc2003-40114.

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The US market is currently making a double jump in its HRSG requirements. Heretofore, HRSGs were used largely in industrial size cogen applications. According to the PURPA (Public Utility Regulatory Policy Act), public utilities were required to purchase that electric power generated in excess of the steam host’s needs. Thus, HRSGs were relatively small and operated under constant conditions. Now, HRSGs are much larger (utility size) and also more complex due to the introduction of triple pressure plus reheat behind powerful heavy duty gas turbines. With the onset of deregulation and consequent merchant power, combined cycle plants are now required to supply electrical power to the grid as and when needed with consequent day/night and weekday/weekend cycling. Those merchant plants have to come on and off line with minimal notice and be run sometimes at partial loads. Even units which were originally designed for base load are all eventually forced to cycle as new more efficient power plants are built. Thus, substantial changes in basic HRSG design are needed to cope with these changes. Coincidentally, the types of service projected for USA HRSGs have been in effect in Europe for over two decades. For this reason, European HRSG manufacturers/operators have adopted cycling tolerant Vertical HRSGs based on designs which permit the tubes to expand/contract freely and independently of one another, as distinguished from the more rigid horizontal gas pass design. Thus, fatigue stresses related to load following swings are minimized. This is just an illustration of the specific features of the Vertical European HRSGs for minimizing damages due to cycling related fatigue stresses. Vertical HRSG design shall be considered not only in terms of smaller footprint, but also as a solution to cycling related problems. As generally recognized, the cycling criterion is an integral part of HRSG design. This paper presents solutions to HRSG design issues for cycling tolerant operation. It relates to published data on problems observed with cycling Horizontal HRSGs, and it describes how these problems can be overcome. Concepts, design features and calculation methods applied to cycling tolerant HRSGs are reviewed in detail. Vertical HRSGs have been criticized because of their need for circulation pumps. Interestingly, the need for such pumps was eliminated a decade ago, with the advent of natural circulation for Vertical HRSGs up to 1800 psia (124 bar A) operating pressure.
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Bartholomew, Robert D., and Emory H. Hull. "Preoperational Cleaning Requirements for HRSG Units." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52033.

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There have been no generally agreed upon practices regarding preoperational chemical cleaning of new heat recovery steam generators (HRSGs). Some have been cleaned only with warm detergent solutions while others are cleaned using alkaline detergents followed by iron oxide removal and passivation stages. Thorough inspection and monitoring of waterside surfaces from fabrication through commissioning are necessary to assess unit cleanliness. However, these activities are sometimes neglected. In some cases, there is no contingency plan should inspection reveal fouled or corroded surfaces. Poor waterside cleanliness has caused startup delays and problems during subsequent operation. This paper summarizes the recommended requirements for both companies that plan to clean and for those companies that do not expect to clean.
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Galopin, J. F. "Dynamic Constraints on HRSG Drum Design." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-239.

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Heat Recovery Steam Generator start-ups are most often thought of as being a delicate step in the pressurization of the boiler, as are trips and shutdowns. One reason for this is the so-called swell effect and the problems which can arise when this event occurs while another might be the different controls that have to be monitored at the same time. A dynamic software is actually used by Cockerill Mechanical Industries (C.M.I.) to simulate the behaviour of all significant thermodynamic variables of the system as well as the temperatures of the materials, and typical control variables versus time. During the development of this software, special care has been given to the study of the influence of the vaporizer pressure drop on the temperature and pressure gradient at the inlet of the drum, where critical thermal and mechanical stresses might appear. The circulation pump specifications have been taken into account. A discussion is presented in order to measure the influence of this pressure drop on the highest observed stresses during the swell effect as well as the pressure gradient used during the pressurization on the fatigue analysis of the drum and its nozzles. Their design is then briefly overviewed using two methods of calculations.
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Pasha, Akber, Andrew S. Ragland, and Suichu Sun. "Thermal and Economic Considerations for Optimizing HRSG Design." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30250.

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The design, operation and usage of Heat Recovery Steam Generators (HRSG) has undergone considerable changes in the last 30 years. Nowadays, instead of as an option item, HRSGs are a major part of the Combined Cycle Power Plant. This makes it necessary to optimize the design and operation of the HRSG so that it can be integrated with the total plant. However, because of the complexity, it is not always feasible to evaluate all possible configurations for selecting the most optimum one within the given time constraints. An attempt is made here to present the parametric effect of various variables through descriptive graphs. These graphs are developed for general cases but can be applied to specific cases to give the trend rather than the absolute values. Cycle designers can use those to narrow down the cycle HRSG configurations. Plant operators may be able to use these to improve the performance by simple additions or modifications.
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Sanaye, Sepehr, Arash Moradi, Farid Bashiri, Amir Saeed Dashti, Daryoush Mehranian, and Mansoor Mehrara. "Performance Assessment of a Transient Model for HRSGs in Combined Cycle Power Plants." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38810.

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Heat Recovery Steam Generators (HRSGs) are major Componets in Combined Cycle Power Plants (CCPPs) which are particulary subject to severe thermal and flow stresses specially during cold start-up period. Hence it is important to predict the operational parameters of HRSGs such as temperature of steam, water steam, water, tube metal and flue gas at various parts sections during the transient operation as well as steady sate conditions. In this paper, the transient model proposed by Pasha and Jolly et al. [2,3] has been selected and developed as a program (HRSG) to predict the operational conditions of the whole HRSG elements during transient and steady state operations. The program is able to analyze arbitrary number of pressure levels and any number of elements such as superheater, evaporator, economizer, deaerator and desuperheater. To assess the correct performance of the developed model and program, and to predict the capability of the method in predicting variations of temperature with time at various elements, three groups of data verifications were performed. First, the numerical outputs were checked against the same outputs reported by Jolly et al. [3]. Second, the theoretical results were checked with experimental data obtained for HRSG at Tehran CCPP during cold start run. The variations with time of gas, metal, water and steam temperatures at various sections of HRSG were among the studied parameters. Third, the model outputs were checked against the data reported for the HRSG performance test at Neyshaboor CCPP, at base and part loads. In all above cases the theoretical and measured or reported values were compared and satisfactory closeness was found.
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Torresi, Marco, Alessandro Saponaro, Sergio Mario Camporeale, and Bernardo Fortunato. "CFD Analysis of the Flow Through Tube Banks of HRSG." In ASME Turbo Expo 2008: Power for Land, Sea, and Air. ASMEDC, 2008. http://dx.doi.org/10.1115/gt2008-51300.

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The prediction of the performance of HRSG (Heat Recovery Steam Generator) by means of CFD codes is of great interest, since HRSGs are crucial elements in gas turbine combined cycle power plants, and in CHP (combined heat and power) cycles. The determination of the thermo-fluid dynamic pattern in HRSGs is fundamental in order to improve the energy usage and limit the ineffectiveness due to non-homogeneous flow patterns. In order to reduce the complexity of the simulation of the fluid flow within the HRSG, it is useful modeling heat exchangers as porous media zones with properties estimated using pressure drop correlations for tube banks. Usually, air-side thermo-fluid dynamic characteristics of finned tube heat exchangers are determined from experimental data. The aim of this work is to develop a new procedure, capable to define the main porous-medium non-dimensional parameters (e.g., viscous and inertial loss coefficients; porosity; volumetric heat generation rate; etc...) starting from data obtained by means of accurate three-dimensional simulations of the flow through tube banks. Both finned and bare tube banks will be considered and results presented. The analysis is based on a commercial CFD code, Fluent v.6.2.16. In order to validate the proposed procedure, the simulation of an entire fired HRSG of the horizontal type developed by Ansaldo Caldaie for the ERG plant at Priolo (Italy) has been performed and results have been compared with their data.
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Ryan, David T., Judith A. Veatch, and Akber Pasha. "A Unique Approach to HRSG Bypass Dampers." In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-230.

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‘Soft’ start flow distribution, control capability, sealing performance, and safety, were four reasons Oklahoma Municipal Power Authority (OMPA), in cooperation with Black & Veatch and Vogt, installed Dual BiPlane Heat Recovery Steam Generator (HRSG) Isolation and Bypass Dampers from Damper Design, Inc. on the gas turbine outlet at this facility. The DDI BiPlane damper is truly a unique damper for this application. This design allowed OMPA to have the safety and isolation of a flap diverter white providing the even gas distribution and accurate flow control to the HRSG under startup conditions available from a louver style damper. The arrangement consists of two DDI BiPlane dampers, one on the inlet to the HRSG and one isolating the stack. Since safety is highest priority, Damper Design utilized an independent lockout type linkage that allows control of the dampers while positively preventing the closure of both gas paths at the same time. By installing the DDI BiPlane damper, OMPA has the ability to throttle the gas turbine exhaust flow independently to the HRSG and stack. This allows the gases to enter the HRSG with a much more evenly distributed flow pattern and at lower controlled flow rates than with competing designs. This paper will address the benefits, design, and operating advantages of the use of the DDI BiPlane Damper specifically in HRSG isolation and bypass installations. It is also applicable to other systems where control and isolation with one damper is desirable.
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Reports on the topic "HRSG"

1

Campbell, A. H. High performance steam cogeneration (proof-of-concept phases). Phase 2, HRSG 500-hour test report: Final report. Office of Scientific and Technical Information (OSTI), December 1992. http://dx.doi.org/10.2172/10123729.

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Ofstedal, Mary Beth, David Weir, and Kuang-Tsung (Jack) Chen. Updates to HRS Sample Weights. Survey Research Center, Institute for Social Research, University of Michigan, 2011. http://dx.doi.org/10.7826/isr-um.06.585031.001.05.0025.2011.

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Pulst, Stefan M. NF2 in Hrs-Mediated Signal Transduction. Fort Belvoir, VA: Defense Technical Information Center, November 2003. http://dx.doi.org/10.21236/ada427555.

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Pulst, Stefan M. Mouse Models of HRS-NF2 Interaction. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada456920.

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Pulst, Stefan M. NF2 in Hrs-Mediated Signal Transduction. Fort Belvoir, VA: Defense Technical Information Center, November 2002. http://dx.doi.org/10.21236/ada411657.

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Pulst, Stefan M. NF2 in Hrs-Mediated Signal Transduction. Fort Belvoir, VA: Defense Technical Information Center, November 2000. http://dx.doi.org/10.21236/ada391835.

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Pulst, Stefan M. NF2 in Hrs-Mediated Signal Transduction. Fort Belvoir, VA: Defense Technical Information Center, November 2001. http://dx.doi.org/10.21236/ada400523.

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Mosby, Shea Morgan, and Aaron Joseph Couture. Why LANL is interested in the HRS. Office of Scientific and Technical Information (OSTI), July 2015. http://dx.doi.org/10.2172/1193625.

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Cao, Honggao, John Henretta, Theresa Norgard, and Beth Soldo. HRS 2001 HUMS College Tuition Imputations (Restricted). Institute for Social Research, University of Michigan, 2005. http://dx.doi.org/10.7826/isr-um.06.585031.001.05.0009.2005.

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Nolte, Michael. Occupation and Industry Coding in HRS/AHEAD. Institute for Social Research, University of Michigan, 2010. http://dx.doi.org/10.7826/isr-um.06.585031.001.05.0024.2010.

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