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Relevant bibliographies by topics / Natural heat sources

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Academic literature on the topic 'Natural heat sources'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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Journal articles on the topic "Natural heat sources"

1

Pieper, Henrik, Kertu Lepiksaar, and Anna Volkova. "GIS-based approach to identifying potential heat sources for heat pumps and chillers providing district heating and cooling." International Journal of Sustainable Energy Planning and Management 34 (May 25, 2022): 29–44. http://dx.doi.org/10.54337/ijsepm.7021.

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Geographic information system (GIS) software has been essential for visualising and determining heating and cooling requirements, sources of industrial excess heat, natural bodies of water, and municipalities. Policymakers highly encourage the use of GIS software at all administrative levels. It is expected that the heating and cooling demand will continue to increase. For a reliable heat and cooling supply, we must identify heat sources that can be used to provide heat or for removing surplus heat. We propose a method for identifying possible heat sources for large heat pumps and chillers tha

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Park, Hae-Kyun, and Bum-Jin Chung. "Natural Convection Heat Transfer in a Hemispherical Pool with Volumetric Heat Sources." Journal of Energy Engineering 24, no. 3 (2015): 135–41. http://dx.doi.org/10.5855/energy.2015.24.3.135.

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Oztop, Hakan F., Eiyad Abu-Nada, Yasin Varol, and Ali Chamkha. "Natural convection in wavy enclosures with volumetric heat sources." International Journal of Thermal Sciences 50, no. 4 (2011): 502–14. http://dx.doi.org/10.1016/j.ijthermalsci.2010.10.015.

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Aubinet, M., and J. Deltour. "Natural convection above line heat sources in greenhouse canopies." International Journal of Heat and Mass Transfer 37, no. 12 (1994): 1795–806. http://dx.doi.org/10.1016/0017-9310(94)90068-x.

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Bazylak, A., N. Djilali, and D. Sinton. "Natural Convection in an Enclosure with Distributed Heat Sources." Numerical Heat Transfer, Part A: Applications 49, no. 7 (2006): 655–67. http://dx.doi.org/10.1080/10407780500343798.

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Englart, Sebastian, Andrzej Jedlikowski, Wojciech Cepiński, and Marek Badura. "Renewable energy sources for gas preheating." E3S Web of Conferences 116 (2019): 00019. http://dx.doi.org/10.1051/e3sconf/201911600019.

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To ensure proper gas supply parameters, to the polish natural gas distribution network, which includes about 900 pressure reduction stations (PRS), requires high energy consumption for gas heating, that amounts to approx. 700 TJ/year. This value can be significantly reduced by using renewable energy sources (e.g. ground heat exchangers, heat pumps) in polish gas preheating PRS. This paper presents the analysis of some applications for gas preheating by using gas absorption heat pump and combination of heat pump and ground heat exchanger. The results confirm a noticeable heat energy savings at

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Mustafa, Ahmad W., and Mustafa Z. Abood. "Natural Convection from Discrete Heat Sources Placed in Wavy Enclosure." Tikrit Journal of Engineering Sciences 23, no. 4 (2016): 36–51. http://dx.doi.org/10.25130/tjes.23.4.05.

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The effect of sinusoidal corrugated upper surface for enclosure on the heat transfer by natural convection from two heat sources placed on the bottom surface of the enclosure has been studied. The two heat sources constant and high temperature, length of each heat source (10%) from the total length of bottom surface, the distances that do not contain heat source on the bottom surface thermally insulated, temperature of verticals walls and upper surface low and constant. corrugating upper surface was change the dimensional corrugation amplitude between (0.1-0.3), for number of corrugations (3),

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Anatychuk, L. I., A. V. Prybyla, M. M. Korop, Yu I. Kiziuk, and I. A. Konstantynovych. "Thermoelectric power sources using low-grade heat." Journal of Thermoelectricity, no. 1-2 (June 25, 2024): 90–96. https://doi.org/10.63527/1607-8829-2024-1-2-90-96.

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This work is the first part of a series of studies on thermoelectric power sources using low-grade heat. The results of computer design of a thermoelectric generator with heat exchange by natural convection using waste heat from industrial installations are presented. The generator design was developed and a series of its experimental studies were carried out on a test bench.

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Habib, M. A., S. A. M. Said, and T. Ayinde. "Characteristics of Natural Convection Heat Transfer in an Array of Discrete Heat Sources." Experimental Heat Transfer 27, no. 1 (2013): 91–111. http://dx.doi.org/10.1080/08916152.2012.731473.

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Heindel, T. J., F. P. Incropera, and S. Ramadhyani. "Enhancement of natural convection heat transfer from an array of discrete heat sources." International Journal of Heat and Mass Transfer 39, no. 3 (1996): 479–90. http://dx.doi.org/10.1016/0017-9310(95)00153-z.

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Dissertations / Theses on the topic "Natural heat sources"

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Gubaidullin, Askar. "Natural Convection Heat Transfer in Two-Fluid Stratified Pools with Internal Heat Sources." Doctoral thesis, KTH, Energy Technology, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3285.

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Akdeniz, Erhan Murat. "Effects of power pulsations on natural convection from discrete heat sources." Thesis, Monterey, California: U.S. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/34998.

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Approved for public release, distribution unlimited<br>The natural convection heat transfer from an array of heaters flush mounted on a vertical test surface in response to both step and periodic input power has been investigated. Baseline surface temperature measurements in water were obtained for several steady power inputs, ranging from 0.2 W to 1.0 W for the vertical test surface. Also, the effects of the presence of a parallel shroud near the test surface on measured temperature values were studied. The effects of periodic variations in input power on the heater element temperatures w

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Larsen, Stephen. "Effects of power pulsations on natural convection from discrete heat sources." Thesis, Monterey, California. Naval Postgraduate School, 1991. http://hdl.handle.net/10945/43765.

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The natural convection heat transfer from an array of heaters flush mounted on a vertical test surface in response to both step and periodic input power has been investigated. Baseline surface temperature measurements in water were obtained for several steady power inputs, ranging from 0.2 W to 1.0 W for the vertical test surface. Also, the effects of the presence of a parallel shroud near the test surface on measured temperature values were studied. The effects of periodic variations in input power on the heater element temperatures, were then examined at selected locations. The resulting tra

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Willson, Thomas D. "A study of natural convection cooling of multiple discrete heat sources in a vertical channel." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23126.

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This thesis is a study of missile and target parameters used in second and third order modeling of the tracking subsystem used in radar guided guided missiles. Guidance methods are analyzed to determine which method is optimum in a search for an ideal missile. Target parameters which have an effect on the missile tracking system are analyzed and a target acceleration probability model is discussed. A two dimensional third order tracking model is simulated utilizing a Kalman filter for target parameter estimation and prediction. Linear second and third order tracking models are simulated and co

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Vitali, Raffaella. "Natural convection in a square cavity with discrete heat sources: an experimental and numerical analysis." Doctoral thesis, Università Politecnica delle Marche, 2016. http://hdl.handle.net/11566/242977.

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Lo studio della convezione naturale in cavità quadrata con sorgenti discrete è svolto sia sperimentalmente che numericamente. Sperimentalmente attraverso l'interferometria olografica e il Particle Image Velocimetry mentre numericamente attraverso l'utilizzo del software CFD ANSYS Fluent. Sono presentati 7 diversi studi di configurazioni della cavità dove vengono esaminati gli effetti sulla trasmissione di calore della dimensione delle sorgenti, dell'aspect ratio, della presenza di uno o due ostacoli orizzontali o verticali di diversa lunghezza e della presenza di una quinta sorgente al centro

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Pradipta, Rezy. "Generation of acoustic-gravity waves in ionospheric HF heating experiments : simulating large-scale natural heat sources." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/79031.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 203-208).<br>In this thesis, we investigate the potential role played by large-scale anomalous heat sources (e.g. prolonged heat wave events) in generating acoustic-gravity waves (AGWs) that might trigger widespread plasma turbulence in the ionospheric layer. The main hypothesis is that, the thermal gradients associated with the heat wave fronts could act as a source of powerful AGW capable of triggering iono

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Gaiser, Alfred O. "Natural convection liquid immersion cooling of high density columns of discrete heat sources in a vertical channel." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/26097.

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Pradipta, Rezy. "Could global warming affect space weather? : case studies of intense ionospheric plasma turbulence associated with natural heat sources." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/44774.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2007.<br>Includes bibliographical references (p. 97-100).<br>We report on observations of a series of highly-structured ionospheric plasma turbulence over Arecibo on the nights of 22/23 and 23/24 July, 2006. Incoherent scatter measurements by Arecibo radar, airglow measurements using MIT PSFC's all-sky imaging system (ASIS), together with TEC measurements from GPS satellite network provide well-integrated diagnostics of turbulent plasma conditions. Two kinds of turbulent structures were seen as slan

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Лукичов, В. А. "Теплонасосна установка для опалювальних потреб на базі природних джерел теплоти". Master's thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/72247.

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У роботі визначено негативне теплове навантаження для розглянутого приміщення, реальні параметри первинного контуру з використанням (теплоти ґрунту, сонячної енергії, теплоти атмосферного повітря), виконано порівняння варіантів теплонасосного опалення по енергозатратам капітальним інвестиціям.<br>В работе определены негативное тепловая нагрузка для рассматриваемого помещения, реальные параметры первичного контура с использованием (теплоты грунта, солнечной энергии, теплоты атмосферного воздуха), выполнено сравнение вариантов теплонасосного отопления по энергозатраты капитальным инвестициям.<br

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Jansen, Adrian J. "Natural convection above a horizontal heat source." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from the National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA267212.

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Books on the topic "Natural heat sources"

1

Larsen, Stephen. Effects of power pulsations on natural convection from discrete heat sources. Naval Postgraduate School, 1991.

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2

Gaiser, Alfred O. Natural convection liquid immersion cooling of high density columns of discrete heat sources in a vertical channel. Naval Postgraduate School, 1989.

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3

Knight, Daniel L. Natural convection liquid immersion cooling of a column of discrete heat sources in a vertical channel. 1988.

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4

Hambrick-Stowe, Charles E. Language of the Heart. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190249496.003.0005.

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Charles E. Hambrick-Stowe gives us a window into Jonthan Edwards’ spiritual practices and how the Bible colored them. With his typological imagination, Edwards relished nature, but even there, his imaginative reflections connected what he perceived in nature with what he read in Scripture. The Bible also helped him sift through the thorny question of how one best understands experiential religion, straddling the means of grace and the free work of the Holy Spirit. His various notebooks reveal how extensively Scripture shaped Edwards’ spiritual and intellectual life. In practice, the Bible beca

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Jones, Darryl, and Ann Goth. Mound-builders. CSIRO Publishing, 2008. http://dx.doi.org/10.1071/9780643096486.

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Mound-builders are unique in being the only birds that do not incubate their eggs using body heat; rather, a variety of naturally occurring sources of heat is exploited such as solar energy and the heat generated by decomposing organic matter. This book shows how this remarkable adaptation influences every part of these birds’ lives, including the development of the embryo, the parentless life of the hatchlings, their social organisation and their survival. Twenty-two species of mound-builders exist within the Megapode family. Mound-builders examines the three occurring in Australia: the

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Antioxidants: Education for Patients and the Public. Exon Publications, 2025. https://doi.org/10.36255/antioxidants.

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Antioxidants are natural compounds that help protect the body from damage caused by free radicals, which are unstable molecules that contribute to aging and various diseases. This article provides a detailed guide on antioxidants, their benefits, sources, and their role in preventing chronic illnesses. It explains how free radicals lead to oxidative stress, which can cause cell damage and increase the risk of conditions such as heart disease, cancer, and neurodegenerative disorders. The article explores how antioxidants work by stabilizing these harmful molecules and reducing inflammation in t

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Uddandrao, V. V. Sathibabu, and Parim Brahma Naidu, eds. Advancements in Cardiovascular Research and Therapeutics: Molecular and Nutraceutical Perspectives. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/97898150508371220101.

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This reference summarizes recent advancements in knowledge about cardiovascular disease and pharmacology. The goal of the book is to inform readers about recent findings on cardiovascular therapeutics and how to conduct experiments to evaluate natural products. It presents 10 chapters that cover basic clinical research on cardiovascular diseases and therapeutic agents derived from natural sources. The book concludes with a series of experiments that demonstrate the methods to test the ameliorative effects of 3 phytochemicals: Biochanin A (red clover), Zingiberene (ginger oil) and Betaine (suga

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Mason, Chris. Heart Like a Fakir. Rowman & Littlefield, 2022. https://doi.org/10.5040/9798881813536.

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Heart Like a Fakir is a history of the final forty years of British East India Company rule in India as witnessed by General Sir James Abbott (1807–1896), the man for whom the Pakistani town of Abbottabad is named. Based on extensive research into primary source documents, the book uses the life of General Sir James Abbott as a narrative thread to explore the troubled period between William Dalrymple’s White Moghuls and the Indian Rebellion of 1857. General Sir James Abbott was one of the most remarkable characters in British colonial history, becoming Great Britain’s first guerilla leader, th

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Arrien, Sophie-Jan, and Beatriz Contreras Tasso, eds. From Vulnerability to Promise. Lexington Books, 2025. https://doi.org/10.5040/9781978748675.

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From the outset, Paul Ricœur’s work gives centrality to man's bodily and sensitive nature—his primordial affectivity and fragility—as sources of free action. From Vulnerability to Promise: Perspectives on Ricœur from Women Philosophers explores this dimension and its ethical, political, and conceptual implications, focusing on the embodied dimension of existence, its vulnerability, and its possibilities of attestation and recognition. Edited by Sophie-Jan Arrien and Beatriz Contreras, this book examines the relationships—passivity and activity, mind and body, singularity and sociality, finitud

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Mckanan, Dan. George Lippard, Ignatius Donnelly, and the Esoteric Theology of American Labor. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252039997.003.0002.

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This chapter examines the works of two labor novelists, George Lippard (1822–54) and Ignatius Donnelly (1831–1901), focusing specifically on their use of esoteric Christianity as a source of worker empowerment. Esotericism here is defined as that strand of belief and practice that finds hidden significance beneath the surface of religious traditions. Esotericists view all nature as alive and posit elaborate correspondences between heaven and earth, or the self and God. Most esotericists see themselves as bearers of an ancient tradition that has been transmitted through initiations by secret br

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Book chapters on the topic "Natural heat sources"

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Gdhaidh, Farouq A., Khalid Hussain, and Hong-Sheng Qi. "Numerical Study of Conjugate Natural Convection from Discrete Heat Sources." In Transactions on Engineering Technologies. Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-9804-4_1.

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Söylemez, M. S., and M. Ünsal. "Computation of Steady Laminar Natural Convective Heat Transfer from Localized Heat Sources in Enclosures." In Cooling of Electronic Systems. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1090-7_12.

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El Moutaouakil, Lahcen, Mohammed Boukendil, Rachid Hidki, Zouhair Charqui, Zaki Zrikem, and Abdelhalim Abdelbaki. "Influence of Heat Sources/Sinks on Unsteady Natural Convection in a Differentially Heated Enclosure." In Lecture Notes in Mechanical Engineering. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-43934-6_25.

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Köberle, K., and H. Auracher. "Temperature controlled measurements of the critical heat flux on microelectronic heat sources in natural convection and jet impingement cooling." In Thermal Management of Electronic Systems. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1082-2_21.

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Biswal, Gloria, and Aurovinda Mohanty. "Numerical Analysis of Natural Convection in a Partially Open Square Cavity with Multiple Heat Sources." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4165-4_8.

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Dutta, Shantanu, and Sukumar Pati. "Effect of Multiple Heat Sources on Heatline and Entropy Generation for Natural Convection Within a Rhombic Enclosure." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-7535-4_43.

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Celik, Ahmet. "Mercury." In Sources, Toxicity and Remediation Techniques of Mercury, Hexavalent Chromium and Selenium. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053358916.1.

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Mercury (Hg) is a pervasive and hazardous heavy metal pollutant, originating from both natural sources and human activities. The global concern over mercury pollution escalated following the Minamata disease incident in Japan during the 1950s. Mercury can exist in liquid form at room temperature and as a gas, enabling long-distance atmospheric travel. Human activities, including industrial processes, fossil fuel combustion, and mineral extraction, significantly contribute to mercury emissions, with approximately 2220 tons emitted globally in 2015. Mercury pollution in soil, primarily driven by

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Tan, Qingkun, Jianbing Yin, Peng Wu, Hang Xu, Wei Tang, and Lin Chen. "Study on the Comparison and Selection of County Energy Internet Planning Schemes Based on Integrated Empowerment-Topsis Method." In Proceeding of 2021 International Conference on Wireless Communications, Networking and Applications. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2456-9_57.

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AbstractEnergy Internet is an important way to solve current energy and environmental problems. It combines the planning of multi-energy systems such as electricity, natural gas, heat and transportation, combines energy conversion and utilization with comprehensive demand response, and integrates energy supply network planning with sources and loads. Energy hub planning is combined. Firstly, through the literature survey method and expert interview method to identify the factors that affect planning, and establish a factor index system. Secondly, in order to make the calculation results more m

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Karimi Askarani, Kayvan, Tom Sale, and Tom Palaia. "Natural Source Zone Depletion of Petroleum Hydrocarbon NAPL." In Advances in the Characterisation and Remediation of Sites Contaminated with Petroleum Hydrocarbons. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34447-3_5.

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AbstractIn the last decade, it has become widely recognized that petroleum found in soil and groundwater in the form of non-aqueous phase liquid (NAPL) is depleted by naturally occurring microbial communities. Losses of petroleum NAPL via natural processes are referred to as natural source zone depletion (NSZD). The natural loss rates of petroleum NAPL are large enough that they can often be the primary component of a site management strategy. Losses of NAPL through NSZD processes provide by-products such as CO2, CH4, and heat. As such, based on consumption of O2, production of CO2 and CH4, ge

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Blázquez, Cristina Sáez, David Borge-Diez, Ignacio Martín Nieto, Arturo Farfán Martín, and Diego González-Aguilera. "Multiparametric Evaluation of Electrical, Biogas and Natural Gas Geothermal Source Heat Pumps." In Geothermal Heat Pump Systems. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-24524-4_4.

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Conference papers on the topic "Natural heat sources"

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Limpach, Juliette M., Muhammad Salman, Daniel Florez-Orrego, Fran�ois Mar�chal, and Gr�goire L�onard. "Evaluation of Energy Transition Pathways for Industries with Low-Temperature Heat Demand: The Case of Laundry and Syrup Sectors." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.141643.

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Industries with low-temperature heat demand, such as laundry and syrup sectors, heavily rely on natural gas-fired boilers, posing challenges to achieving net-zero emissions by 2050. Like hard-to-abate sectors, they must explore energy transition strategies, including heat recovery, fuel substitution, or carbon capture, to reduce CO2 emissions. This paper evaluates the potential of energy transition in these sectors through case studies, using a mixed integer linear programming (MILP) approach. The analysis focuses on three key performance indicators (KPIs): specific energy consumption, CO2 red

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Cormos, Calin-Cristian, Arthur-Maximilian B�thori, Ang�la-M�ria Kasza, Maria Mihet, Letitia Petrescu, and Ana-Maria Cormos. "Integration of Direct Air Capture with CO2 Utilization Technologies powered by Renewable Energy Sources to deliver Negative Carbon Emissions." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.184729.

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Reduction of greenhouse gas emissions is an important environmental element to actively combat the global warming and climate change. In view of reducing the CO2 concentration from the atmosphere, the Direct Air Capture (DAC) options are promising technologies in delivering negative carbon emissions. The integration of renewable-powered DAC systems with the CO2 utilization technologies can deliver both negative carbon emissions as well as reduced energy and economic penalties of overall decarbonized processes. This work evaluates the innovative energy- and cost-efficient potassium - calcium lo

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Icoz, Tunc, Qinghua Wang, and Yogesh Jaluria. "Natural Convection From Protruding Heat Sources in a Channel." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47419.

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Natural convection has important implications in many applications like cooling of electronic equipment due to its low cost and easy maintenance. In the present study, two-dimensional natural convection heat transfer to air from multiple identical protruding heat sources, which simulate electronic components, located in a horizontal channel has been studied numerically. The fluid flow and temperature profiles, above the heating elements placed between an adiabatic lower plate and an isothermal upper plate, are obtained using numerical simulation. The effects of source temperatures, channel dim

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Dias, Tito, and Luiz Fernando Milanez. "Natural Convection in Two-Dimensional Horizontal Channel With Heat Sources." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-41247.

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Laminar natural convection in a two-dimensional horizontal channel is very important in laptop design, since optimizing the utilization of the cooler saves energy from the battery. In this work, this configuration has been numerically studied. Three cases were studied according to the position of the heat sources in the lower wall, upper wall and both. The computational domain consisted of two adiabatic walls where the heat sources were positioned, and two open boundaries, where the manometric pressure and normal gradient of velocity were zero. Ambient temperature was prescribed for the enteri

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Fleischer, Amy S., and Randy D. Weinstein. "An Experimental Investigation of the Thermal Interaction of Electro-Optical Components on a Printed Circuit Board in Natural and Forced Convection." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47376.

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The thermal interaction of an electrical and an optical component located on the same vertical circuit board is studied experimentally. The effects of component proximity and convective flow rate on overall power dissipation from each component are analyzed. The components are represented by isothermal heat sources mounted to a standard 1.59mm (0.0625 in) thick FR4 circuit board. In natural convection situations, when the spacing between components is great enough that the component thermal footprints do not interfere, the power dissipation reaches a maximum “plateau” value that is independent

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LAI, F., Y. CHOI, and F. KULACKI. "Natural convection in horizontal porous layers with discrete heat sources." In 26th Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-659.

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Sheremet, Mikhail A., and Geniy V. Kuznetsov. "CONJUGATE NATURAL CONVECTION IN AN ENCLOSURE WITH LOCAL HEAT SOURCES." In Proceedings of CHT-08 ICHMT International Symposium on Advances in Computational Heat Transfer. Begellhouse, 2008. http://dx.doi.org/10.1615/ichmt.2008.cht.150.

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Lee, Seung D., Hyoung M. Son, Kune Y. Suh, Joy L. Rempe, F. Bill Cheung, and Sang B. Kim. "Prandtl Number Dependent Natural Convection in a Rectangular Pool With Internal Heat Sources." In ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72505.

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Natural convection plays an important role in determining the thermal load from debris accumulated in the reactor vessel lower head during a severe accident in nuclear power plants. The natural convection heat transfer involving internal heat generation is generally represented by the modified Rayleigh number, Ra’, which quantifies the internal heat source and hence the strength of the buoyancy force. The SIGMA RP (Simulant Internal Gravitated Material Apparatus Rectangular Pool) tests are concerned with high Ra’ turbulent natural convection in a rectangular pool. The internal heating was real

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Milanez, Luiz Fernando, and Arthur E. Bergles. "STUDIES ON NATURAL CONVECTION HEAT TRANSFER FROM THERMAL SOURCES ON A VERTICAL SURFACE." In International Heat Transfer Conference 8. Begellhouse, 1986. http://dx.doi.org/10.1615/ihtc8.2800.

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Grindle, Eugene, John Cooper, and Roger Lawson. "Improving Natural Draft Cooling Tower Performance With Heat Injection." In 2002 International Joint Power Generation Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ijpgc2002-26028.

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This paper presents an assessment of heat injection as a means of improving natural draft cooling tower performance. The concept involves injecting heat into the cooling tower exit air/vapor stream immediately above the drift eliminators in order to increase the difference between the density of the exit air/vapor stream and the ambient air. The density difference between the air/vapor in the cooling tower stack and the ambient air is the engine that drives airflow through the cooling tower. The enhancement of the airflow through the cooling tower (the natural draft) results in more evaporatio

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Reports on the topic "Natural heat sources"

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Xie, Gao, and Olsen. PR-179-13601-R01 CFD Analysis of the Heat Transfer Characteristics and the Effect of Thermowells. Pipeline Research Council International, Inc. (PRCI), 2013. http://dx.doi.org/10.55274/r0010818.

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Thermowells are widely utilized for temperature measurement in metering stations on natural gas pipelines. The use of thermowells induces errors in the measurements of gas temperature due to the heat transfer processes involved in the thermowell installations, which results in errors in the flow rate calculations. In order to study the temperature measurement accuracy of using thermowells, a three-dimensional computational fluid dynamics study is performed and an in-depth investigation of the effect of the multiple variables on gas temperature measurement is carried out. The parameters under i

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DiDomizio, Matthew, and Jonathan Butta. Measurement of Heat Transfer and Fire Damage Patterns on Walls for Fire Model Validation. UL Research Institutes, 2024. http://dx.doi.org/10.54206/102376/hnkr9109.

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Fire models are presently employed by fire investigators to make predictions of fire dynamics within structures. Predictions include the evolution of gas temperatures and velocities, smoke movement, fire growth and spread, and thermal exposures to surrounding objects, such as walls. Heat flux varies spatially over exposed walls based on the complex thermal interactions within the fire environment, and is the driving factor for thermally induced fire damage. A fire model predicts the temperature and heat transfer through walls based on field predictions, such as radiative and convective heat fl

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George, Darin. L52315 Testing of Environmentally-Friendly Gas Sampling Methods. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010176.

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Recent environmental concerns have led to calls for reduced hydrocarbon emissions to the atmosphere from a variety of sources. One source of emissions being examined in this regard is natural gas spot sampling methods that vent pipeline gases to the atmosphere. Some sampling techniques and equipment have been developed that do not emit greenhouse gases, but the need exists to test these methods for their ability to collect accurate, representative samples. Another related concern is the accuracy of samples drawn from streams near their hydrocarbon dew point (HDP). While the spot sampling metho

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Jebrail, F. F., and R. S. Kistler. L51753 Natural Draft Aerial Coolers. Pipeline Research Council International, Inc. (PRCI), 1996. http://dx.doi.org/10.55274/r0010422.

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In recent years, environmental regulations have tightened and community involvement in environmental issues has increased. The pipeline industry has responded by attempting to reduce the negative economic and environmental impact of conventional air-cooled heat exchangers, which are characterized by high noise levels, excessive energy consumption, and high maintenance costs. While industry has had limited success in reducing air cooler noise using silencers and timed variable-speed fans, these solutions are costly. The most effective noise reduction method is to reduce or eliminate noise at it

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Paule, Bernard, Flourentzos Flourentzou, Tristan de KERCHOVE d’EXAERDE, Julien BOUTILLIER, and Nicolo Ferrari. PRELUDE Roadmap for Building Renovation: set of rules for renovation actions to optimize building energy performance. Department of the Built Environment, 2023. http://dx.doi.org/10.54337/aau541614638.

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In the context of climate change and the environmental and energy constraints we face, it is essential to develop methods to encourage the implementation of efficient solutions for building renovation. One of the objectives of the European PRELUDE project [1] is to develop a "Building Renovation Roadmap"(BRR) aimed at facilitating decision-making to foster the most efficient refurbishment actions, the implementation of innovative solutions and the promotion of renewable energy sources in the renovation process of existing buildings. In this context, Estia is working on the development of infer

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Woldekidan, Korbaga. End-Use Savings Shapes Measure Documentation: Boiler Replacement with Air-Source Heat Pump Boiler and Natural Gas Boiler Backup. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2368812.

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Im, Piljae, and Xiaobing Liu. Case Study for the ARRA-funded Ground Source Heat Pump Demonstration at Denver Museum of Nature & Science. Office of Scientific and Technical Information (OSTI), 2016. http://dx.doi.org/10.2172/1319163.

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Glazer, Itamar, Randy Gaugler, Daniel Segal, Parwinder Grewal, Yitzhak Spiegel, and Senthamizh Selvan. Genetic Enhancement of Environmental Stability and Efficacy of Entomopathogenic Nematodes for Biological Control. United States Department of Agriculture, 1995. http://dx.doi.org/10.32747/1995.7695833.bard.

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The overall obejctive of the research project was to enhance the intrinsic biological control potential of entomopathogenic nematodes through genetic manipulation. We have chosen heat and desiccation tolerance as prime traits to be enhanced in order to increase the overall efficacy of these nematodes against insect pests under harsh conditions. Initially, we used mutagenesis and selection approaches to enhance these traits. In the mutagenesis experiments several morphological mutants of Heterorhabditis bacteriophora HP88 were isolated and characterized phenotypically and genetically. Infective

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Hrehor, Troy, Timothy Jacobs, and Mark Patterson. PR457-22209-R01 Feasibility Study of the Premixing of PCC Fuel and Air to Reduce GHG Emissions. Pipeline Research Council International, Inc. (PRCI), 2025. https://doi.org/10.55274/r0000115.

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The large-bore, slow-speed, two-stroke natural gas engines that frequently power natural gas pipelines are the subjects of increasingly stringent emissions standards, particularly those targeting emissions of oxides of nitrogen (NOx) and greenhouse gases (GHGs) such as methane and carbon dioxide. Running these engines near their lean limits of operation reduces combustion temperature and therefore NOx emissions but at the cost of increased misfires and combustion instability, thus increasing GHG emissions. A pre-combustion chamber (PCC) can be equipped to provide a high-energy ignition source

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Eck, Marshall B., and Meera Mukunda. On the Nature of the Response of the General Purpose Heat Source to the Impact of Large Solid Rocket Motor Casing Fragments. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/1033346.

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