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Relevant bibliographies by topics / Heat Removal Rate

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Academic literature on the topic 'Heat Removal Rate'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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Journal articles on the topic "Heat Removal Rate"

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Liu, Cheng-Wei, Shuo-Jun Mei, Di Liu, and Fu-Yun Zhao. "Convective dispersion of heat and airborne pollutants inside street canyons under the influence of urban ground heat flows." Indoor and Built Environment 28, no. 5 (2017): 619–35. http://dx.doi.org/10.1177/1420326x17706186.

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This paper reports a computational fluid dynamics simulation of airflow and species dispersion inside street canyons and building blocks simultaneously. Urban thermal boundary flows could cause a profound effect on the dispersion of pollutant scalars and ventilation performance of street canyons. Nominal pollutant concentration differences between the urban street canyon and the countryside fresh air could be determined by a consideration of wind profile and ground vegetation. This study models the interaction of the fluid flow, thermal and pollutant dispersions based on the Reynolds number (R

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Park, R., K. Ha, K. Kang, S. Kim, H. Kim, and J. Jeong. "Critical heat removal rate through a hemispherical narrow gap." Heat and Mass Transfer 39, no. 3 (2003): 249–55. http://dx.doi.org/10.1007/s00231-002-0345-4.

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Fang, Xing, and Dengke Zheng. "Study on Limit Margin of Rising and Cooling Rate in Primary Circuit of CPR1000 Unit." E3S Web of Conferences 438 (2023): 01016. http://dx.doi.org/10.1051/e3sconf/202343801016.

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The thermal conductivity of waste heat removal system of CPR1000 unit is analyzed, and the rate margin of primary circuit is studied. In this study, the design parameters of a domestic CPR1000 residual heat removal system are used to study the primary loop temperature margin according to the different core states, and the primary loop temperature margin according to the different valve openings of the residual heat removal system (RRA) . The results show that the CPR1000 unit has a large margin in cooling down, but there is no room for improvement in the process of heating up. Therefore, it is

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Gade, Bhavani Shankar, and P.S.Kishore. "PERFORMANCE ANALYSIS OF A CONVENTIONAL AIR HEATER." International Journal of Research - Granthaalayah 5, no. 4 (2017): 320–33. https://doi.org/10.5281/zenodo.573004.

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Solar energy constitutes one of the main alternatives for facing the energy problems of the future. Solar air heaters are used for applications at low and moderate temperatures. Such as crop drying, timber seasoning, space heating, and drying agriculture products. Artificial geometry applied on the absorber plate is the very efficient method to improve thermal performance of solar air heaters. The thermal efficiency of solar air heaters is generally poor due to low heat transfer coefficient between the absorber plate and air flowing in the collector. Thermal performance of the conventional sol

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Razeghiyadaki, Amin, Carlo Molardi, Didier Talamona, and Asma Perveen. "Modeling of Material Removal Rate and Surface Roughness Generated during Electro-Discharge Machining." Machines 7, no. 2 (2019): 47. http://dx.doi.org/10.3390/machines7020047.

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This study reports on the numerical model development for the prediction of the material removal rate and surface roughness generated during electrical discharge machining (EDM). A simplified 2D numerical heat conduction equation along with additional assumptions, such as heat effect from previously generated crater on a subsequent crater and instantaneous evaporation of the workpiece, are considered. For the material removal rate, an axisymmetric rectangular domain was utilized, while for the surface roughness, a rectangular domain where every discharge resides at the end of previous crater w

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Weng, Meng-Chia, Chiou-Liang Lin, and Cheng-Hsi Lee. "Effect of Heat-Treatment Remediation on the Mechanical Behavior of Oil-Contaminated Soil." Applied Sciences 10, no. 9 (2020): 3174. http://dx.doi.org/10.3390/app10093174.

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The heat treatment of oil-contaminated sites is widely carried out for the purposes of remediation. However, heat treatment changes the physical and chemical properties of soil. Before the soil can be reused as a construction material in civil engineering, such as in backfill or road base materials, the changes to its physical properties must be understood. Therefore, this study investigates the changes in the physical and chemical properties of oil-contaminated soil after heat treatment. In this investigation, experimental samples of soil with added oil from a refinery plant are used to inves

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Kharisma, Sunandi, Dwi Yuliaji, Adhika Enggar Pamungkas, et al. "Impact of Cooler Temperature Variations on Flow Boiling Phenomena in a Natural Circulation Rectangular Loop." Journal of Physics: Conference Series 2972, no. 1 (2025): 012020. https://doi.org/10.1088/1742-6596/2972/1/012020.

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Abstract The passive cooling system that utilizes natural circulation is effective in removing decay heat from nuclear reactors, with the direct passive residual heat removal system being the most efficient. This study employs the Rectangular-TP FASSIP-04 Ver.2 Loop with a direct heating model to investigate two-phase natural circulation flow. The coolant water temperature is set at 10°C, 15°C, and 20°C with a constant heating power of 5600 watts, to measure temperature characteristics, flow rate, flow regimes, and heat removal rate. The results show that higher coolant temperatures accelerate

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Tao, Jiaqi, Hanyang Gu, Zhenqin Xiong, Xing Jiang, and Yongcheng Xie. "Parametric analysis of heat transfer rate of passive residual heat removal heat exchanger submerged in water tank." Experimental Thermal and Fluid Science 98 (November 2018): 317–27. http://dx.doi.org/10.1016/j.expthermflusci.2018.05.027.

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Kaskov, S. I. "Calculation and Experimental Study of Heat Exchange in a System of Plane-Parallel Channels with Surface Intensifiers." Nelineinaya Dinamika 17, no. 2 (2021): 211–20. http://dx.doi.org/10.20537/nd210206.

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This paper presents the results of numerical investigation, calculation analysis and experimental study of heat exchange in a system of plane-parallel channels formed by rectangular fins, which are applied in a heat removal device using heat tubes for power semiconductor energy converters. Passive cooling (heat removal by radiation and natural convection) and active cooling (heat removal by radiation and forced convection) are investigated for various velocities of air cooling of fins by spherical vortex generators applied to its surface. A comparative analysis of the results is carried out fo

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Mahdy, Hussain H., Abdulsalam D. M. Hassen, and Mohammed Ghalib Al-Azawy. "Investigating the impact of flow rate and moisture content for different concentration of liquid desiccant solution." Wasit Journal of Engineering Sciences 11, no. 1 (2023): 75–83. http://dx.doi.org/10.31185/ejuow.vol11.iss1.346.

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The desiccant air conditioning system consists of two processes, namely cooling and dehumidification, in which the air temperature and humidity are controlled in order to provide comfortable thermal conditions. A typical system includes a dehumidifier, indirect evaporative cooler, and regenerator. The desiccant is selected depending on its ability to absorb water vapor present in the air. In this study, calcium chloride solution was used as a desiccant for the desiccant solution regeneration process, and a flat plate solar collector was employed. Different variables, such as the primary air fl

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Dissertations / Theses on the topic "Heat Removal Rate"

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Plank, Jack R. "Nuclear Thermal Propulsion Cool-Down Phase Optimization Through Quasi-Steady Computational Analysis, and the Effect of Auxiliary Heat Removal Systems." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618934609976051.

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Choonya, Gasper. "Experimental investigation of ventilation performance of corner placed stratum ventilation in an office environment." Thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-29710.

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Energy use in buildings account for about one third of the total global energy supply and contributes as much as 30% of the anthropogenic greenhouse gas emissions. It is estimated that energy use in buildings will increase to 67% by 2030. The need for better thermal comfort and air quality in indoor environments is the leading cause for high energy use in buildings. Heating, ventilation and air conditioning systems take up about 50% of the total energy use in buildings which is about 10-20% of the national energy use in most developed countries. The development and adoption of sustainable ven

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Nguyen, Tuan Ngoc. "An algorithm for extracting the PPG Baseline Drift in real-time." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2016. https://ro.ecu.edu.au/theses/1801.

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Photoplethysmography is an optical technique for measuring the perfusion of blood in skin and tissue arterial vessels. Due to its simplicity, accessibility and abundance of information on an individual’s cardiovascular system, it has been a pervasive topic of research within recent years. With these benefits however there are many challenges concerning the processing and conditioning of the signal in order to allow information to be extracted. One such challenge is removing the baseline drift of the signal, which is caused by respiratory rate, muscle tremor and physiological changes within the

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Pati, Akash Ranjan. "Enhancement of Heat Removal Rate in Film Boiling Regime by Spray Cooling with Sea Water." Thesis, 2016. http://ethesis.nitrkl.ac.in/8256/1/2016-MT-214CH1551-Enhancement_of_Heat_Removal.pdf.

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Water spray cooling is an important technology which is used in steel industries. The final mechanical properties of the steel are directly proportional to the quenching rate. Spray cooling is an important technique to achieve very high cooling rate. However, the achieved cooling rate is not sufficient for the metal which are used in some specific applications such as production of low weight and high strength steel which is used for the fabrication of light weight vehicle. Hence, the current process needs to be further enhanced. In the current case, experiments were conducted by using spray o

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Wang, Jen-Yi, and 王仁逸. "Study for the wafer thin-film remove rate is affect by gas distribution in different zone of polish head on CMP process." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/59657239514722754966.

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碩士<br>國立中央大學<br>機械工程研究所碩士在職專班<br>98<br>This study explores that gas distribution in different zone of polish head is how to affect thin film remove rate of wafer . In the reach study , the several gas zones are made on the polish head , select a specific polish pad , polish slurry flow rate , slurry flow rate and specific polish head RPM to explore that thin film remove rate of wafer is how to affect by gas distribution in different zone of polish head actually. In the CMP process , the remove rate of thin-file on the wafer is not easy to control the profile what the specification is , so impl

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Books on the topic "Heat Removal Rate"

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Kahn, S. Lowell. Balloon-Assisted Removal of the Trapped Catheter. Edited by S. Lowell Kahn, Bulent Arslan, and Abdulrahman Masrani. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199986071.003.0048.

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Although uncommon, a trapped central venous catheter (CVC) can present a significant problem for the interventionalist and pose considerable risk to the patient. The use of chronic long-term CVCs is on the rise, with an average catheter dwell time of 10 months. Although all CVCs are prone to complications, chronic catheters exhibit a higher rate of complications. Chronic catheters are also at risk of becoming trapped, whereby they cannot be removed by standard technique. A simple, elegant technique to remove a trapped CVC via inserting an angioplasty balloon into the lumen of a stuck catheter

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Bluhm, Carla, and Nathan Clendenin. Someone Else's Face in the Mirror. Greenwood Publishing Group, Inc., 2009. http://dx.doi.org/10.5040/9798216016533.

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In 2005, surgeons in France removed part of the face from a cadaver and grafted it onto the head of a 38-year-old woman grossly disfigured by a dog attack. Three years later, in December, 2008, surgeons at the Cleveland Clinic announced they had performed the first U.S. face transplant. Although modern culture is accustomed to pushing medicine and the human body beyond all limits, the world’s first partial face transplant and the seven that have followed have caused a stir that still reverberates globally. This book begins with the story of Isabelle Dinoire, the recipient of the first face tra

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Hamilton, Rhonda L. A Guide to Weight Loss Surgery. Praeger, 2008. http://dx.doi.org/10.5040/9798400660498.

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With obesity rising at alarming rates in the US, UK, and developed countries around the world - so much that the US Department of Health has officially classified obesity as an illness and the World Health Organization has dubbed it a pandemic - weight-loss surgery is also on the rise. Traditional weight-loss programs - diet, exercise, and pharmaceuticals - are only effective for significant and sustained weight loss for about 10 percent of all people who try. The results are even more dismal for the obese aiming to lose not just a few pounds, but 50, 75, or more. And their health lies in the

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Johansen, Bruce, and Adebowale Akande, eds. Nationalism: Past as Prologue. Nova Science Publishers, Inc., 2021. http://dx.doi.org/10.52305/aief3847.

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Nationalism: Past as Prologue began as a single volume being compiled by Ad Akande, a scholar from South Africa, who proposed it to me as co-author about two years ago. The original idea was to examine how the damaging roots of nationalism have been corroding political systems around the world, and creating dangerous obstacles for necessary international cooperation. Since I (Bruce E. Johansen) has written profusely about climate change (global warming, a.k.a. infrared forcing), I suggested a concerted effort in that direction. This is a worldwide existential threat that affects every living t

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Book chapters on the topic "Heat Removal Rate"

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Li, Changying, Shuqi Meng, Tianming Ruan, and Yalun Yan. "Research of Corrosion Products Migration Behavior in PWR Primary Circuit Under Extended Low Power Operation Mode." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_5.

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AbstractIn order to improve the flexibility of response to power grid demand, both newly built and in-service nuclear power units need to demonstrate the feasibility of ELPO (Extended Low Power Operation) and design schemes. During ELPO, the change of local thermal hydraulic conditions caused by the change of core power will have a great impact on the migration behavior of corrosion products in the primary circuit of PWR (Pressurized Water Reactor). Corrosion products deposited in the core will affect the heat transfer of fuel cladding, axial power distribution and critical heat flux. Corrosio

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Gupta, Deepak Kumar, Avanish Kumar Dubey, and Alok Kumar Mishra. "Numerical Study on Heat Affected Zone and Material Removal Rate of Shape Memory Alloy in Wire Electric Discharge Machining." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8542-5_44.

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Wang, Zhiwei, Yanping He, Zhongdi Duan, Chao Huang, and Shiwen Liu. "Direct Contact Condensation Characteristics of Steam Injection into Cold-Water Pipe Under Rolling Condition." In Springer Proceedings in Physics. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_65.

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AbstractDirect contact condensation (DCC) is widely occurred in nuclear power systems and leads to undesired phenomena such as condensation-induced water hammer. For ocean nuclear power ships, DCC is inevitable in the passive heat removal system and influenced by sea conditions. In this paper, the characteristics of DCC under rolling conditions are analyzed. The numerical model of DCC is established based on computational fluid dynamics approach. The VOF model, SST k–ω turbulence model and the additional inertia force model are incorporated to describe the liquid-gas two-phase flow under the r

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Moll, W., and E. Kastendieck. "Kinetics of Lactic Acid Accumulation and Removal in the Fetus." In Fetal Heart Rate Monitoring. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-70358-4_17.

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An, Ji Hun, Heemang Song, and Hyun-Chool Shin. "Progressive Motion Artifact Removal in PPG Signal for Accurate Heart Rate Estimation." In Lecture Notes in Electrical Engineering. Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-5041-1_92.

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Bossi, Paolo, and Erika Stucchi. "Treatment of OPMD and First Results of Immune Checkpoint Inhibitors." In Critical Issues in Head and Neck Oncology. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-84539-0_3.

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Abstract Oral potentially malignant diseases (OPMDs) are a group of oral mucosal lesions that have a higher chance of turning into cancer. They show up in different ways, have different causes, and look differently on a microscopic level. To date, there are no clinical or histological factors that could predict the OPMDs’ malignant transformation to oral squamous cell carcinoma (OSCC), except for previous OSCC and WHO classification. Early diagnosis appears to be essential in these lesions in order to identify the risk of malignant progression and treat them accordingly. The standard treatment

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Brackmann, Lukas, Arne Röttger, Hoang-Giang Bui, et al. "Excavation Simulations and Cutting Tool Wear." In Interaction Modeling in Mechanized Tunneling. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-24066-9_3.

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AbstractThe mechanized tunnel construction is carried out by tunnel boring machines, in which the soil in front of the working face is removed, and the tunnel lining is carried out with shotcrete or the setting of segments and their back injection. Advancements in this field aim towards increase of the excavation efficiency and increase of the tool lifetime, especially in rock-dominated grounds. The latter is achieved by understanding the wear mechanisms abrasion and surface-fatigue, and by knowledge of the microstructure-property relation of the utilized materials. Improvements for tool conce

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Zhang, Lifeng, Jianwei Gao, Lucas Nana Wiredu Damoah, and David G. Robertson. "Iron: Removal from Aluminum." In Encyclopedia of Aluminum and Its Alloys. CRC Press, 2019. http://dx.doi.org/10.1201/9781351045636-140000434.

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In this paper, the Fe-rich phases in and their detrimental effect on aluminum alloys are summarized. The existence of brittle platelet β-Fe-rich phases lowers the mechanical properties of aluminum alloys. The methods to neutralize the detrimental effect of iron are discussed. The use of high cooling rate, solution heat treatment, and addition of elements such as Mn, Cr, Be, Co, Mo, Ni, V, W, Cu, Sr, or the rare earth elements Y, Nd, La, and Ce are reported to modify the platelet Fe-rich phases in aluminum alloys. The mechanism of the modification is briefly described. Technologies to remove ir

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Biyabani, Syed Afzal Uddin. "Drying." In A Text Book of Pharmaceutics for I Year Diploma in Pharmacy. THINKPLUS PHARMA PUBLICATIONS, 2024. http://dx.doi.org/10.69613/sy42p883.

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Drying is a crucial unit operation in pharmaceutical manufacturing, involving the removal of moisture or other solvents from solid, semi-solid, or liquid materials. This process is essential for enhancing the stability, handling properties, and shelf life of pharmaceutical products. Various drying mechanisms, including evaporation, vaporization, and sublimation, are employed depending on the nature of the material and desired end-product characteristics. Different types of dryers, such as tray dryers, fluidized bed dryers, spray dryers, and freeze dryers, are used based on the specific require

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Abdelfattah, Mahmoud, and Mohamed S. Hamed. "Spray Quenching." In Quenchants and Quenching Technology. ASM International, 2024. http://dx.doi.org/10.31399/asm.hb.v4f.a0007012.

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Abstract Spray quenching (or jet impingement) is the most common technique employed to improve the uniformity of heat removal and break the vapor layer, allowing for a high cooling rate to be achieved. This article presents the heat transfer characteristics of quenching a hot surface, which can be expressed by the boiling and quench curve. It discusses three major spray parameters that have a substantial role in the quantification of spray cooling performance: droplet size, droplet velocity, and volumetric flux. The article also presents the available models and correlations to predict the coo

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Conference papers on the topic "Heat Removal Rate"

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Marks, Chuck, Michael J. Little, Marc A. Kreider, and Robert D. Varrin. "Benefits of Partial Removal of Corrosion Deposits from Nuclear Steam Generators: ASCA and CODE Applications." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09481.

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Abstract As with many heat exchangers, nuclear steam generators are subject to the accumulation of corrosion product deposits on heated tube surfaces and other internal components on the secondary (shell) side. These deposits can have adverse effects on thermal efficiency, material integrity, and in some cases plant operability. Accordingly, plant operators routinely devote substantial resources to limiting the generation and accumulation of deposits, including periodic removal of deposits through various mechanical and chemical approaches. Since the 1980s, chemical cleaning processes with sol

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Summits, Stephen, Paul Akula, Debangsu Bhattacharyya, Grigorios Panagakos, Benjamin Omell, and Michael Matuszewski. "Optimal Design of Intensified Towers for CO2 Capture with Internal, Printed Heat Exchangers." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.123118.

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Solvent-based carbon capture processes typically suffer from the temperature rise of the solvent due to the heat of absorption of CO2. This increased temperature is not thermodynamically favorable and results in a significant reduction in performance in the absorber column. As opposed to interstage coolers, which only remove, cool, and return the solvent at discrete locations in the column, internal coolers that are integrated with the packing can cool the process inline, which can result in improved efficiency. This work presents the modeling of these internal coolers within an existing gener

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Cummings, Arthur L., Fred C. Veatch, and Alfred E. Keller. "Corrosion and Corrosion Control Methods in Amine Systems Containing H2S." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97341.

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Abstract Overall H2S-amine system corrosion rates are determined by the rate of acid oxidation of iron by dissolved forms of H2S and CO2 in highly buffered basic solutions. Rates of interference with the laydown or removal of the protective layer of iron sulfide corrosion product from the free metal are also part of the equation. These two phenomena are functions of the concentration and form of the oxidizing acid, the solution temperature, the fluid velocity, and the concentration of heat stable salt anions. The effect of solution pH, cation content and different heat stable salt anions on th

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Zhang, Wenwen, Wenxi Tian, Suizheng Qiu, and Guanghui Su. "Numerical Investigation on Heat Removal Capacity of Passive Residual Heat Removal Heat Exchanger." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-30302.

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In the present study, thermal-hydraulics characteristics of AP1000 passive residual heat removal heat exchanger (PRHR-HX) at initial operating stage were analyzed based on the porous media models. The data predicated by RELAP5 under the condition of the station blackout was employed as the inlet flow rate and temperature boundary of CFD calculation. The heat transfer from the primary side coolant to the in-containment refueling water storage tank (IRWST) side fluid was calculated in a three-dimensional geometry during iterations, and the distributed resistances were added into the C-type tube

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Nemchinsky, Valerian. "Melting Rate of a Solid With Periodic Melt Removal." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-1035.

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Abstract The melting rate of a solid, subjected to a heat flux at its surface, changes with time. When a fresh unmelted surface is first exposed to a heat source, the melting isotherm moves quickly inside the solid. Then its motion slows down: this decrease in melting rate is obviously because of increasing thermal resistance of the growing liquid layer that separates solid-liquid interface from the heat source. If the liquid layer is not removed, the melting rate approaches zero. The resultant melting rate depends on the manner in which the melt is removed. In a number of cases of practical i

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Kargar, Alireza, Mohammad H. Hosni, Steve Eckels, and Tomas Gielda. "Experimental Analysis of an Air-to-Air Heat Exchanger for Use in a Refrigeration Brayton Cycle." In ASME 2004 Heat Transfer/Fluids Engineering Summer Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/ht-fed2004-56544.

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The refrigeration Brayton cycle, which has been used extensively in various industries, has an excellent potential for use in automotive air conditioning applications. However, the air-cycle system has a couple of drawbacks including fog generation and low cycle efficiency. In this research project, an air-to-air heat exchanger called a ‘mixer’ is designed and used at the outlet of a refrigeration Brayton cycle. The primary function of the mixer is to remove moisture from the secondary warm airflow into the system. Successful moisture removal from the secondary airflow results in achieving the

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Wu, Jiangbo, Qincheng Bi, and Chengsi Zhou. "Experimental Investigations on Temperature Distribution and Heat Removal Capability of Residual Heat Exchanger." In ASME 2013 Power Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/power2013-98288.

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The residual heat exchanger in nuclear power plant is the key component of secondary side passive residual heat removal system, where the performance of removing decay heat by condensation and pool boiling to the secondary water storage tanks in the residual heat exchanger is crucial to the safety of the nuclear power plant. In the present paper, an experimental facility is built to evaluate the heat removal capability of the residual heat exchanger in both steady state natural circulation and forced circulation at different pressures. The high pressure steam is forced to flow and enter into h

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Xiao, Rong, Kuang-Han Chu, and Evelyn N. Wang. "High-Flux Thin Film Evaporation on Nanostructured Surfaces." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22905.

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The heat generation rates of high performance electronics motivate the development of new thermal management solutions. Thin film evaporation with a jet impingement or spray system promise high heat fluxes up to 1000 W/cm2 with low thermal resistances. However, challenges with implementation currently limit the ability to reach the theoretical limits. In this work, we investigated the utilization of micro-/nanostructured surfaces to control the liquid film thickness and provide a sufficient liquid flow rate to achieve high heat removal rates. We developed a model to predict the propagation rat

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Xie, Xu, Changhua Nie, Li Zhan, et al. "Analysis of Heat Transfer and Flow Characteristics of AP1000 Passive Residual Heat Removal Heat Exchanger." In 2014 22nd International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icone22-31230.

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In this paper, the computational fluid dynamics (CFD) method is applied to the thermal-hydraulic analysis, while the porous media model is used to simplify AP1000 passive residual heat removal heat exchanger tube. The temperature as well as flow distribution in the secondary side of the heat exchanger are obtained, aiming at analysis of natural circulation ability. It can be noted that the fluid in the secondary side of heat exchanger moves driven by the effect of thermal buoyancy, forming the natural cycle, which takes away heat in tube bundle region. The heat transfer in water tank is mainly

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Grooten, Mart H., and Cees W. van der Geld. "The Importance of Drainage in Dropwise Condensation From Flowing Air-Steam Mixtures." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22189.

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In this study, the importance of drainage on dropwise condensation of a flowing air-steam mixture is investigated. The initial phase of drop growth, when diffusion is not limiting, is artificially made more important to separate the diffusion resistance to heat transfer. An apparatus with controlled removal of condensate droplets from the condenser plates is designed and tested. The dropwise condensation process is frequently interrupted upon which nucleation restarts each time. Non-artificial drainage occurs at low frequencies of typically 4 large drops per second per dm2. Condensate removal

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Reports on the topic "Heat Removal Rate"

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Bruce. L51942 Refinement of Cooling Rate Prediction Methods for In-Service Welds. Pipeline Research Council International, Inc. (PRCI), 2003. http://dx.doi.org/10.55274/r0010435.

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Welds made onto in-service pipeline are particularly susceptible to hydrogen cracking because of the fast weld cooling rates that tend to result from the ability of the flowing contents to remove heat from the pipe wall. The most commonly used procedures for controlling the risk of hydrogen cracking rely on the use of a sufficiently high heat input level. Two methods currently exist for predicting required heat input levels for welds made onto in-service pipelines: thermal analysis computer modeling and the heat-sink capacity measurement method. The objective of this project was to refine thes

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Weinschenk, Craig, and Jack Regan. Analysis of Search and Rescue Tactics in Single-Story Single-Family Homes Part II: Kitchen and Living Room Fires. UL's Fire Safety Research Institute, 2022. http://dx.doi.org/10.54206/102376/zkxw6893.

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Prior full-scale fire service research on the residential fireground has focused the impact of ventilation and suppression tactics on fire dynamics. This study builds upon prior research by conducting 10 experiments a purpose-built single-story, single-family residential structure to quantify the im- pact of how search and rescue tactics are coupled with ventilation and suppression actions and timing. Each fully furnished structure included four bedrooms, 2 bathrooms and an open-floor kitchen and living room. The structures were instrumented to quantify post-ignition toxic gas and thermal cond

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Weinschenk, Craig. Analysis of Search and Rescue Tactics in Single-Story Single-Family Homes Part I: Bedroom Fires. UL's Fire Safety Research Institute, 2022. http://dx.doi.org/10.54206/102376/dptn2682.

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Prior full-scale fire service research on the residential fireground has focused the impact of ventilation and suppression tactics on fire dynamics. This study builds upon prior research by conducting 11 experiments a purpose-built single-story, single-family residential structure to quantify the im- pact of how search and rescue tactics are coupled with ventilation and suppression actions and timing. Each fully furnished structure included four bedrooms, 2 bathrooms and an open-floor kitchen and living room. The structures were instrumented to quantify post-ignition toxic gas and thermal cond

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Weinschenk, Craig, and Keith Stakes. Analysis of Search and Rescue Tactics in Single-Story Single-Family Homes Part III: Tactical Considerations. UL's Fire Safety Research Institute, 2022. http://dx.doi.org/10.54206/102376/xsla7995.

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Prior full-scale fire service research on the residential fireground has focused the impact of ventilation and suppression tactics on fire dynamics. This study builds upon prior research by conducting 21 experiments in two identical purpose-built single-story, single-family residential structures to quantify the impact of how search and rescue tactics are coupled with ventilation and suppression actions and timing. Each fully furnished structure included four bedrooms, 2 bathrooms and an open-floor kitchen and living room. The structures were instrumented to quantify post-ignition toxic gas an

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5

Veer, J. van der, and J. van Wortel. L51758 Non-Destructive Assurance of Quality of Heat-Treated Fittings. Pipeline Research Council International, Inc. (PRCI), 1997. http://dx.doi.org/10.55274/r0010338.

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Sometimes heat treated components fail to pass the specified minimum mechanical requirements (yield strength, Charpy V-notch toughness). The influence of the complete heat cycle on the end results is not well understood and without a N.D.T. method for determining these properties the pipeline companies have difficulty in determining acceptable and non-acceptable individual components. In the quality control process for heat treated components, it is important to have a non-destructive testing technique available for predicting the yield strength and, if necessary, Charpy V-notch properties. In

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6

Lawson. L51597 Feasibility Study of New Technology for Intake Air Filtration. Pipeline Research Council International, Inc. (PRCI), 1989. http://dx.doi.org/10.55274/r0010105.

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Inlet air filters are widely used to remove solids and liquid droplets from the ambient air before it enters the compressor of a gas turbine. Clean inlet air provides many advantages: Less corrosion of the compressor and of gas-path hot parts, such as the turbine, decreased compressor fouling, less erosion of the compressor bladeThese in turn prevent deterioration of output and heat rate, and reduce maintenance costs. Compressor fouling is caused by the ingestion of substances that deposit and adhere to blade surfaces, resulting in reduced aerodynamic efficiency and decreased available output.

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7

Gibson and Maxey. L51713 Effective Procedure Variables for Weld onto In-Service Pipelines. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0010360.

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The ability of the flowing contents to remove heat from the pipe wall causes welds made onto in-service pipelines to cool at an accelerated rate and makes these welds particularly susceptible to hydrogen cracking. Several approaches exist for qualifying procedures where the thermal conditions produced by the flowing pipeline contents are simulated, allowing the ability of a procedure to produce sound, crack-free welds to be demonstrated. This report documents the various methods that can be used, under a number of different conditions, for simulating the proper cooling effects that will be exp

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8

Bruce and Yushanov. L52056 Enhancement of PRCI Thermal Analysis Model for Assessment of Attachments. Pipeline Research Council International, Inc. (PRCI), 2004. http://dx.doi.org/10.55274/r0010436.

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Welds made onto in-service pipelines tend to cool at an accelerated rate as the result of the flowing content"s ability to remove heat from the pipe wall. These welds are therefore likely to have high heat-affected zone (HAZ) hardness values and to be susceptible to hydrogen cracking. The use of thermal analysis modeling allows welding parameters (i.e., required heat input levels) to be selected based on anticipated weld cooling rates. Both the Battelle model and the recently developed PRCI Thermal Analysis Model for Hot Tap Welding assume that the pipe material is the most susceptible materia

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Bruce. L52059 Evaluation of Grouted Tee Connections for Thin-Walled Pipe. Pipeline Research Council International, Inc. (PRCI), 2006. http://dx.doi.org/10.55274/r0010250.

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There are a number of applications where the attachment of hot tap fittings to in-service pipelines by welding is difficult, if not impossible. These applications include very thin-wall pipelines, older carbon steel pipelines with very high carbon equivalent values, pipelines made of high-alloy materials, sub-sea pipelines, etc. There are two primary concerns with welding onto in-service pipelines and piping systems. The first concern is for welder safety during welding, since there is a risk of burnthrough, where the welding arc causes the pipe wall to be penetrated allowing the contents to e

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O'Connell, Kelly, David Burdick, Melissa Vaccarino, Colin Lock, Greg Zimmerman, and Yakuta Bhagat. Coral species inventory at War in the Pacific National Historical Park: Final report. National Park Service, 2024. http://dx.doi.org/10.36967/2302040.

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The War in the Pacific National Historical Park (WAPA), a protected area managed by the National Park Service (NPS), was established "to commemorate the bravery and sacrifice of those participating in the campaigns of the Pacific Theater of World War II and to conserve and interpret outstanding natural, scenic, and historic values on the island of Guam." Coral reef systems present in the park represent a vital element of Guam?s cultural, traditional, and economical heritage, and as such, are precious and in need of conservation. To facilitate the management of these resources, NPS determined t

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