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Relevant bibliographies by topics / Stem heating

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Academic literature on the topic 'Stem heating'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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Journal articles on the topic "Stem heating"

1

Jones, Joshua L., Brent W. Webb, Bret W. Butler, Matthew B. Dickinson, Daniel Jimenez, James Reardon, and Anthony S. Bova. "Prediction and measurement of thermally induced cambial tissue necrosis in tree stems." International Journal of Wildland Fire 15, no. 1 (2006): 3. http://dx.doi.org/10.1071/wf05017.

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A model for fire-induced heating in tree stems is linked to a recently reported model for tissue necrosis. The combined model produces cambial tissue necrosis predictions in a tree stem as a function of heating rate, heating time, tree species, and stem diameter. Model accuracy is evaluated by comparison with experimental measurements in two hardwood and two softwood species: red maple (Acer rubrum), chestnut oak (Quercus prinus), ponderosa pine (Pinus ponderosa), and Douglas-fir (Pseudotsuga menziesii). Results are promising, and indicate that the model predicts stem mortality/survival correctly in ~75–80% of the test cases. A limited sensitivity analysis of model kill depth predictions suggests that the model is more sensitive to required input data for some species than for others, and that the certainty in predicting vascular cambium necrosis decreases as stem diameter decreases.

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Wilairatana, Vajara, Chatchawan Pirot, and Noppachart Limpaphayom. "Effects of Cemented Hip Stem Pre-heating on Stem Push-out Strength." Orthopaedic Surgery 7, no. 3 (August 2015): 261–65. http://dx.doi.org/10.1111/os.12194.

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Bova, A. S., and M. B. Dickinson. "Linking surface-fire behavior, stem heating, and tissue necrosis." Canadian Journal of Forest Research 35, no. 4 (April 1, 2005): 814–22. http://dx.doi.org/10.1139/x05-004.

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Data from 69 experimental, small-plot fires are used to describe relationships among fire intensity, bark-surface heat flux, and depth of necrosis in stem tissue for red maple (Acer rubrum L.) and chestnut oak (Quercus prinus L.). A tetrazolium staining technique was used to determine the depth of necrosis in tree boles subjected to fires with intensities of 20 to 2000 kW/m. Over a range of bark moistures (28%83%) and bole diameters (320 cm), depth of necrosis appears to be primarily a function of fire intensity, flame residence time at the stem, and the corresponding time-integrated heat flux at the bark surface. Our results, along with known relations between bole diameter and bark thickness, and improved models of fire behavior and heat transfer, may be useful for estimating tree mortality resulting from prescribed fires.

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Rahman, Md Hasnat, Kayo Kudo, Shahanara Begum, Yusuke Yamagishi, Takahiro Muraishi, Satoshi Nakaba, Yuichiro Oribe, Chanhui Lee, Hyun-O. Jin, and Ryo Funada. "Effects of auxin-transport-inhibitor and defoliation on wood formation in locally-heated Abies homolepis." IAWA Journal 39, no. 4 (November 5, 2018): 353–71. http://dx.doi.org/10.1163/22941932-20170211.

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ABSTRACTTo understand the precise process of wood formation, it is necessary to identify the factors that regulate cambial activity and development of cambial derivatives. Here, we investigated the combined effects of localized-heating and auxin on cambial reactivation and the formation of earlywood tracheids in seedlings of the evergreen coniferAbies homolepisin winter. Three treatments were applied, namely heating (artificial increase in temperature 20–22 °C), heating-plus-auxin transport inhibitor N-(1-naphthyl) phthalamic acid (NPA) and heating-plus-defoliation (removal of needles and buds), with an approximate control, for investigations of cambial activity by light microscopy. After one week of heating, cambial reactivation occurred in the heating, heating-plus-NPA and heating-plus-defoliation treatments. In untreated controls, cambial reactivation occurred later than in heated stems. Earlywood tracheids were formed after three and six weeks of heating in the heating and heating-plus-NPA treatments, respectively. No tracheids were formed after eight weeks of heating in heated-defoliated seedlings. Numbers of new tracheids were reduced in heated stems by NPA. Our results suggest that an increase in the temperature of the stem is one of the most important limiting factors in cambial reactivation, which is independent of needles and buds and of the polar transport of auxin from apical sources. However, after cambial reactivation, initiation and continuous formation of earlywood tracheids require basipetally transported auxin and other endogenous factors originating in mature needles and buds.

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Kenney, Michael J., and Richard J. Fels. "Forebrain and brain stem neural circuits contribute to altered sympathetic responses to heating in senescent rats." Journal of Applied Physiology 95, no. 5 (November 2003): 1986–93. http://dx.doi.org/10.1152/japplphysiol.00438.2003.

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Acute heating in young rats increases visceral sympathetic nerve discharge (SND); however, renal and splanchnic SND responses to hyperthermia are attenuated in senescent compared with young Fischer 344 (F344) rats (Kenney MJ and Fels RJ. Am J Physiol Regul Integr Comp Physiol 283: R513-R520, 2002). Central mechanisms by which aging alters visceral SND responses to heating are unknown. We tested the hypothesis that forebrain neural circuits are involved in suppressing sympathoexcitatory responses to heating in chloralose-anesthetized, senescent F344 rats. Renal and splanchnic SND responses to increased (38°C-41°C) internal temperature were determined in midbrain-transected (MT) and sham-MT young (3-mo-old), mature (12-mo-old), and senescent (24-mo-old) F344 rats and in cervical-transected (CT) and sham-CT senescent rats. Renal SND remained unchanged during heating in MT and sham-MT senescent rats but was increased in CT senescent rats. Splanchnic SND responses to heating were higher in MT vs. sham-MT senescent rats and in CT vs. MT senescent rats. SND responses to heating were similar in MT and sham-MT young and mature rats. Mean arterial pressure (MAP) was increased during heating in MT but not in sham-MT senescent rats, whereas heating-induced increases in MAP were higher in sham-MT vs. MT young rats. These data suggest that in senescent rats suppression of splanchnic SND to heating involves forebrain and brain stem neural circuits, whereas renal suppression is mediated solely by brain stem neural circuits. These results support the concept that aging alters the functional organization of pathways regulating SND and arterial blood pressure responses to acute heating.

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Damron, Leatha A., Do-Gyoon Kim, and Kenneth A. Mann. "Fatigue debonding of the roughened stem–cement interface: Effects of surface roughness and stem heating conditions." Journal of Biomedical Materials Research Part B: Applied Biomaterials 78B, no. 1 (2006): 181–88. http://dx.doi.org/10.1002/jbm.b.30470.

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Turnip, Luber, I. Wayan Widia, and Pande Ketut Diah Kencana. "Pengaruh Suhu dan Lama Pemanasan terhadap Karakteristik Ikan Tongkol Olahan yang Direndam Dalam Larutan Asap Cair Batang Bambu Tabah (Gigantochloa nigrociliata BUSE-KURZ)." Jurnal BETA (Biosistem dan Teknik Pertanian) 8, no. 1 (August 20, 2019): 158. http://dx.doi.org/10.24843/jbeta.2020.v08.i01.p20.

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Tuna has a high protein and water content, and has solid meat. But tuna is also very easy to damage. The cause of damage fish is a high water content which can cause microorganisms to multiply easily. Fumigation with liquid smoke is safer and more practical than conventional fumigation, because liquid smoke contains phenol, carbonyl and organic acids which are useful for providing a distinctive taste and as preservatives in fish. The liquid smoke comes from stem of tabah bamboo (Gigantochloa nigrociliata Buse-Kurz). The purpose of this study was to determine the effect of temperature and heating time on the characteristics of processed tuna which soaked in liquid smoke stem of tabah bamboo and to find out the temperature and heating time of the best organoleptic characteristics of processed tuna which soaked in a solution of liquid smoke stem of tabah bamboo. The method used is Factorial Completely Randomized Design with two factors. The first factor is the treatment of heating temperature which consists of three levels, and the second factor is the treatment of heating time which consists of three levels. Each treatment was repeated twice. The best combination of treatments is the heating temperature of 100?C, heating for 4 hours produce pH 5.5, water content 58.06%, ash content 1.69%, protein content 18.29%, hedonic color test 3.94, aroma test hedonic 4.28, hedonic texture test 4.72, hedonic taste test 4.5, texture scoring test 4.83, and the overall acceptance scoring test is 4.39. Keywoard : smoked tuna, liquid smoke, tabah bamboo.

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Zhang, Xiaozhang, Gang Zhao, Yuan Cao, Zeeshan Haider, Meng Wang, and Jianping Fu. "Magnetothermal heating facilitates the cryogenic recovery of stem cell–laden alginate–Fe3O4 nanocomposite hydrogels." Biomaterials Science 6, no. 12 (2018): 3139–51. http://dx.doi.org/10.1039/c8bm01004h.

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Navarro, Marta, Samuel A. Morris, Álvaro Mayoral, Jiří Čejka, and Russell E. Morris. "Microwave heating and the fast ADOR process for preparing zeolites." Journal of Materials Chemistry A 5, no. 17 (2017): 8037–43. http://dx.doi.org/10.1039/c7ta02344h.

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Libera, M. "In-Situ crystallization of nano-wires and dots by electron irradiation in a field-emission TEM/STEM." Proceedings, annual meeting, Electron Microscopy Society of America 53 (August 13, 1995): 242–43. http://dx.doi.org/10.1017/s0424820100137586.

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Specimen damage and heating by high-energy electron irradiation can be exploited to affect local specimen composition/temperature to drive phase transformations. Field-emission (FEG) sources are especially prone to inducing damage/heating, because their high brightness provides focused ~1nm FWHM/1.0nA probes. The physics of beam heating and damage are reviewed by Reimer (1,2). Heating is related to energy-loss mechanisms broadly summarized by the Bethe formula for stopping power. Radiation damage can cause atomic displacement, ionization, and bond scission. Displacement increases the point-defect concentration. Composition changes occur when displacements eject atoms from the specimen. This paper outlines first results using focused-probe irradiation in a Philips CM20 FEG TEM/STEM to locally crystallize an amorphous 80nm Ge48Te52 film. Ex-situ annealing leads to spherulitic crystallites. The crystallization kinetics have been studied by time-resolved reflectivity (3) and in-situ hot-stage optical microscopy (4). In-situ TEM annealing was done with a single-tilt hot stage. Films were floated from carbon-coated mica onto Cu grids. In-situ annealing under a parallel (low dose) beam leads to crystallization much like the ex-situ studies except that the crystallite morphology is highly anisotropic due to non-uniform film heating (5).

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Dissertations / Theses on the topic "Stem heating"

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Jones, Joshua Levi. "Development of an advanced stem heating model /." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd231.pdf.

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Jones, Joshua L. "Development of an Advanced Stem Heating Model." BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/88.

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A new one-dimensional heat conduction model for predicting stem heating during fires is presented. The model makes use of moisture and temperature dependent thermal properties for bark and wood. Also, the thermal aspects of the processes of bark swelling, desiccation, and devolatilization are treated in an approximate fashion. Simulation with a surface flux boundary condition requires that these phenomena be accounted for. Previous models have used temperature-time boundary conditions, which prevents them from being directly coupled to fire behavior models. This model uses a flux-time profile for its boundary condition, making it possible to eventually couple it to fire behavior models. Cambial mortality predictions are made through the incorporation of a cell mortality model. The model was developed and validated with laboratory experiments on four species.

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Truvé, Malin, and Johanna Kilegran. "New applications of Antrad Medical's thawing technology : Applications within the clinical and laboratory segment." Thesis, KTH, Skolan för teknik och hälsa (STH), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-190778.

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Antrad Medical has developed an ultra-fast blood plasma thawing device named UFT100. The method is based on thawing with an oscillating electrical field and unlike water baths it is a dry method. Fast and homogeneous thawing is achieved. This project investigates new possible applications where this thawing technology could be used within the clinical and laboratory segment. The aim was to identify existing thawing and heating methods for a substance that can be improved and potentially replaced with the UFT100. Data has been collected through literature research and interviews with Antrad Medical and specialists working in Sweden. The specialists are working within the clinical and laboratory field. A number of criteria for establishment of the UFT100 were set up and used as a tool for evaluation. The substances investigated during this project were infusion medicine, embryos, substance in a sampling tube, protein based pharmaceuticals, stem cells for transplantation and research, biobank sampling tubes, cryoprecipitate, human hepatocytes, live vaccines, API, BDS, intermediate and antibodies. Two applications within the clinical area are found probable, stem cells and cryoprecipitate. Further investigation for human hepatocytes, API, BDS, intermediate and pharmaceuticals is needed.
Antrad Medical har utvecklat en ultra-snabb blodplasmaupptinare kallad UFT100. Det är till skillnad från vattenbad en torr metod baserad på upptining med hjälp av oscillerande elektriska fält. Genom detta uppnås snabb och homogen upptining. Detta projekt undersöker nya möjliga kliniska- och laboratorietillämpningar för upptiningstekniken. Målet var att identifiera substanser vars nuvarande upptining- och uppvärmningsteknik kan förbättras och kanske ersättas med UFT100. Data har samlats in genom litteratursökning och genom intervjuer med Antrad Medical och specialister som arbetar i Sverige. Specialisterna arbetar inom kliniska områden och laboratorieverksamheter. Ett antal kriterier för etablering av UFT100 sattes upp och användes för utvärdering. Substanserna som undersöktes under projektets gång var infusionsmedicin, embryon, innehåll i ett provrör, proteinbaserade läkemedel, stamceller för transplantation och forskning, biobank-provrör, kryoprecipitat, humana hepatocyter, levande vaccin, aktiva substanser, läkemedelssubstanser, intermediat och antikroppar. Två tillämpningar inom det kliniska området ses som möjliga, stamceller och kryoprecipitat. Humana hepatocyter, aktiva substanser, läkemedelssubstanser och intermediat behöver undersökas vidare.

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Patel, Mandar Ranchhod. "STEAM, DIELECTRIC HEATING AND COPPER SULFATE TREATMENT OF INSHELL PECANS." MSSTATE, 2008. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07102008-155952/.

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Water and a copper sulfate (CSL) solution at 27, 57 and 88°C; steam pasteurization and dielectric heating were analyzed on their effect in reducing microbial load (APC) and Salmonella Typhimurium on inshell pecans (Carya illinoinensis). The CSL solution (more effective than water alone) reduced APC by 1.5 (300 s), 2 (60 s) and 4.0 (60 s) log CFU/g at 27, 57 and 88°C, respectively; and Salmonella by 3.0 log at 27°C in 60 s. Steam reduced APC by 3.7 log in 180 s and Salmonella by 4.0 log CFU/g in 30 s. Dielectric treatment reduced APC by 3.0 log and Salmonella by 4.5 log CFU/g in 60 s. Most treatments had no effect on the pecan shell or the nut quality, except for dielectric heating, which gave a slight "roasted" or "burnt" flavor to the nuts. This study showed that a proper antimicrobial-hot water treatment, steam or dielectric heating will be effective in "pasteurizing" pecans, resulting in a safe and wholesome product.

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Kubanek, Gordon J. "Heavy oil processing in steam and hydrogen plasmas." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=63281.

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Wu, Haijun Walker Paul N. "Numerical model for isobaric steam heating of initially saturated packed beds." [University Park, Pa.] : Pennsylvania State University, 2009. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-4300/index.html.

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Hurley, James Thomas. "Analysis of steam and hydronic compartment heating systems aboard U.S. Coast Guard 140 foot WTGB class cutters." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA315405.

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Řezníček, Jan. "Návrh kotle na spalování slámy,sytá pára 143°C 3MW, a pro CZT 6MW." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230879.

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The work is focused on the design heat generation source in my chosen location. The entire facility should be designed to meet the basic requirements of the client. The primary objective of this work is alternatively propose solutions to perform basic balance calculations and determine the performance of each device. Based on the location selected diagram to produce annual heat needs and recommend the best possible solution.

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Hrubý, Vojtěch. "Teplárna na biomasu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-228995.

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The content of this dissertation is to utilize foundations of heat consumption in Velký Karlov and to propose and replace the main district heating plant into the heating plant which uses biomass as its fuel. With techno-economic evaluation of the annual operating central heating plant evaluate the suitability of using a steam turbine or steam engine. The proposal for a steam turbine is chosen by the preliminary calculation. There are showed suitable possibilities of working and its evaluation considered to return period.

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Su, Heyin. "Modeling of Proposed Changes to SIUC Central Heating, Air-Conditioning, and Power Plant Incorporating Variable Frequency Drive (VFD) and High Efficiency Turbine." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/708.

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Currently, the Southern Illinois University Carbondale (SIUC) power plant produces steam at high pressure to drive a high pressure (HP) turbine to make a portion of the electrical power needed by campus, then using 969 kPa (125 psig) steam to provide hot water all year, heat buildings, and to operate a low pressure (LP) turbine that powers the compressor of the central air conditioning (A/C) system. In the proposed system, the HP turbine is replaced by a much higher efficiency, multi-level turbine, the LP turbine is replaced with a motor and Variable Frequency Drive (VFD), and a cooling tower is added to condense more possible steam. This thesis has provided computer models to evaluate the economical feasibility of the proposed system, which are written by using Engineering Equation Solver (EES) software. The results of the study are presented in two cases. Case 1 examines the same amount of coal use between current and proposed systems, while Case 2 exames operating the high pressure boiler at the maximum rate. The results are a cost savings of $1,921,000 and $3,604,000 with payback periods of 4 and 2.2 years for Case 1 and Case 2, respectively. The annual primary energy saved and CO2 reduction from this modification was 200,000 GJ and 564,814 moles, respectively.

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Books on the topic "Stem heating"

1

Canada. Energy, Mines and Resources Canada. Heating & cooling equipment (steam & water). Ottawa, Ont: Energy, Mines and Resources Canada, 1985.

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Holohan, Dan. The lost art of steam heating. Bethpage, N.Y: Dan Holohan Associates, 1992.

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3

Low pressure boilers. 4th ed. Homewood, Ill: American Technical Publishers, 2001.

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Steingress, Frederick M. Low pressure boilers. 2nd ed. Homewood, Ill: American Technical Publishers, 1986.

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Steingress, Frederick M. Low pressure boilers. 3rd ed. Homewood, Ill: American Technical Publishers, 1994.

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Canada. Energy, Mines and Resources Canada. Heating & cooling equipment: Steam and water. Ottawa, Ont: Energy, Mines and Resources Canada, 1985.

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Phetteplace, Gary E. Efficiency of steam and hot water heat distribution systems. [Hanover, N.H.]: U.S. Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, 1995.

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Vakkilainen, Esa K. Offdesign operation of kraft recovery boiler. Lappeenranta: Lappeenranta University of Technology, 1993.

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Greenwald, Martin L. Residential hot water and steam heating: Gas, oil, and solid fuels. Englewood Cliffs, N.J: Prentice-Hall, 1987.

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R, Walker Daryl, ed. Low pressure boilers. 3rd ed. Homewood, Ill: American Technical Publishers, 2009.

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Book chapters on the topic "Stem heating"

1

Mendoza-Maya, P., O. Cazarez-Candia, and S. L. Moya-Acosta. "Modeling of Water-Steam Slug Flow in Inclined Pipes Undergoing a Heating Process." In Fluid Dynamics in Physics, Engineering and Environmental Applications, 245–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27723-8_19.

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Lawrance, Sajith, Anunaya Saraswat, and Avadhesh Yadav. "Experimental Investigation of Solar Steam Generator Based on Evacuated Tube for Heating and Humidification." In Springer Proceedings in Energy, 79–87. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4576-9_8.

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Lv, Fengjiao, Yi Zeng, Bo Liu, Bin Tang, and Qing Chen. "Preparation of Large Size Monolayer MoS2 by a Two-Step Heating Process by CVD." In Lecture Notes in Mechanical Engineering, 777–84. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0107-0_75.

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Novac, Mihaela, Ovidiu Novac, Mircea Gordan, and Cornelia Gordan. "Numerical Modeling of Electromagnetic Induction Heating Process Using an Inductor with Constant Step Between Turns." In Lecture Notes in Electrical Engineering, 1027–37. New York, NY: Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3535-8_85.

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Arous, Safa, Mariem Mharssi, Hassine Bouafif, Besma Bouslimi, Chedly Bradai, and Ahmed Koubaa. "Effect of Steam Explosion and Torrefaction Treatments of Wood Chips on the Heating Value of Pellets." In Lecture Notes in Mechanical Engineering, 171–78. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-52071-7_24.

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Chen, Feng, and Zhiqiao Yan. "Preparation of 3Y-TZP Nanoceramics by a Modified Two-Step Sintering with Ultrahigh Heating and Cooling Rates." In Advanced Functional Materials, 651–59. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0110-0_72.

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Wang, Jiahui, Hong Qian, and Cheng Jiang. "Relation Analysis of Heating Surface’s Steam Temperature Difference and Fouling Degree Based on the Combination of Thermodynamic Mechanism and Production Data Mining." In Intelligent Computing and Internet of Things, 144–54. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-2384-3_14.

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Knupp, Gerd, Peter Kusch, Marian Kozupa, and Maria Majchrzak. "Chemical Structures of Thermal Stable Long-Chain n-Alkyl Amines Used in Corrosion Inhibiting Formulations in Water-Steam and Heating Water Systems in the Power Industry." In Forschungsspitzen und Spitzenforschung, 297–306. Heidelberg: Physica-Verlag HD, 2009. http://dx.doi.org/10.1007/978-3-7908-2127-7_26.

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Ren, Shen, Zhiquan Shu, Jiaji Pan, Ji Peng, Junlan Wang, Chunhua Zhao, and Dayong Gao. "Development of a Novel Electromagnetic Rewarming Technology for the Cryopreservation of Stem Cells with Large Volume." In Novel Perspectives of Stem Cell Manufacturing and Therapies [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.94556.

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Applications of stem cells have been playing significant roles in scientific and clinical settings in the last few decades. The foundation of these approaches is successful cryopreservation of stem cells for future use. However, so far we can only cryopreserve stem cell suspension of small volumes in the order of 1 mL mostly due to the lack of an effective rewarming technique. Rapid and uniform rewarming has been approved to be beneficial, and sometimes, indispensable for the survival of cryopreserved stem cells, inhibiting ice recrystallization or devitrification. Unfortunately, the conventional water bath thawing method failed in providing the rapid and uniform rewarming. The conversion of electromagnetic (EM) energy into heat provides a possible solution to this problem. This chapter will focus on (1) analysis of the combined EM and heat transfer phenomenon in the rewarming of a biospecimen, (2) numerical investigation of the rewarming system, (3) practical setup of an EM resonance system, and (4) test of heating performance with large volume of cells.

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Bowser, Timothy J. "Steam Infusion Heating." In Encyclopedia of Agricultural, Food, and Biological Engineering, Second Edition, 1581–86. CRC Press, 2010. http://dx.doi.org/10.1081/e-eafe2-120045618.

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Conference papers on the topic "Stem heating"

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Koderman Podboršek, Gorazd. "Heating and electrical in situ STEM of titanium oxynitride support for iridium catalyst nanoparticles." In European Microscopy Congress 2020. Royal Microscopical Society, 2021. http://dx.doi.org/10.22443/rms.emc2020.597.

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Shishkovsky, Igor V., Vladimir I. Scherbakov, Stanislav Volchkov, and Larisa Volova. "Laser-assisted nanoceramics reinforced polymer scaffolds for tissue engineering: additional heating and stem cells behavior." In Dynamics and Fluctuations in Biomedical Photonics XV, edited by Valery V. Tuchin, Kirill V. Larin, Martin J. Leahy, and Ruikang K. Wang. SPIE, 2018. http://dx.doi.org/10.1117/12.2290583.

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Kockelmann, Hans, Jaroslav Bartonicek, Eberhard Roos, Rolf Hahn, and Werner Ottens. "Long Term Behaviour of Stuffing Box Packings Under the Influence of Fluids at High Temperature." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77059.

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Testing techniques were developed to investigate the long-term behaviour of stuffing box packings under real service conditions. This equipment meets all requirements for the simulation of high temperature applications with gaseous fluids, hot water and steam: • controlled pre-tightening (gland load); • variation of the stiffness of the assembly (e.g. Bellville springs); • determination and monitoring of packing stress - respective gland load; • control of stroke and stem force; • heating-up, pressurization and temperature control; • conditioning of water and steam chemistry. All relevant influencing parameters on the long-term behaviour of varied stuffing box packings based on flexible Graphite, woven PTFE fibres and special packing designs were taken into consideration: • assembly procedure (packing stress); • stroke and number of cycles; • effect of Bellville springs; • medium and temperature. In detail, friction, relaxation and leakage tests were carried out. On the basis of these results an evaluation of the long-term performance of the different packing types based on Graphite and PTFE is possible.

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Muhammad, Zuraida, Mohd Hezri Fazalul Rahiman, and Mohd Nasir Taib. "Characteristic of steam distillation pot with induction heating system based on step test response." In 2011 IEEE Control and System Graduate Research Colloquium (ICSGRC). IEEE, 2011. http://dx.doi.org/10.1109/icsgrc.2011.5991838.

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Angele, Kristian, Mathias Cehlin, Carl-Maikel Ho¨gstro¨m, Ylva Odemark, Mats Henriksson, Hernan Tinoco, Hans Lindqvist, and Bengt Hemstro¨m. "Flow Mixing Inside a Control-Rod Guide Tube: Part II—Experimental Tests and CFD-Simulations." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29689.

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A large number of control rod cracks were detected during the refuelling outage of the twin reactors Oskarshamn 3 and Forsmark 3 in the fall of 2008. The extensive damage investigation finally lead to the restart of both reactors at the end of 2008 under the condition that further studies would be conducted in order to clarify all remaining matters. Also, all control rods were inserted 14% in order to locate the welding region of the control rod stem away from the thermal mixing region of the flow. Unfortunately, this measure led to new cracks a few months later due to a combination of surface finish of the new stems and the changed flow conditions after the partial insertion of the control rods. The experimental evidence reported here shows an increase in the extension of the mixing region and in the intensity of the thermal fluctuations. As a part of the complementary work associated with the restart of the reactors, and to verify the CFD simulations, experimental work of the flow in the annular region formed by the guide tube and control rod stem was carried out. Two full-scale setups were developed, one in a Plexiglass model at atmospheric conditions (in order to be able to visualize the mixing process) and one in a steel model to allow for a higher temperature difference and heating of the control rod guide tube. The experimental results corroborate the general information obtained through CFD simulations, namely that the mixing region between the cold crud-removal flow and warm by-pass flow is perturbed by flow structures coming from above. The process is characterized by low frequent, high amplitude temperature fluctuations. The process is basically hydrodynamic, caused by the downward transport of flow structures originated at the upper bypass inlets. The damping thermal effects through buoyancy is of secondary importance, as also the scaling analysis shows, however a slight damping of the temperature fluctuations can be seen due to natural convection due to a pre-heating of the cold crud-removal flow. The comparison between numerical and experimental results shows a rather good agreement, indicating that experiments with plant conditions are not necessary since, through the existing scaling laws and CFD-calculations, the obtained results may be extrapolated to plant conditions. The problem of conjugate heat transfer has not yet been addressed experimentally since complex and difficult measurements of the heat transfer have to be carried out. This type of measurements constitutes one of the main challenges to be dealt with in the future work.

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Anderson, Kevin R. "Using a Heat Pump Experiment With Automated Data Acquisition to Augment Hands-On Learning." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-10098.

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Abstract This paper presents the results of using laboratory facilities in conjunction with computer aided data acquisition in order to enhance the teaching and learning experiences of the air conditioning and measurements/instrumentation courses in an engineering program. The paper discusses the use of educational technology in the form of a laboratory experiment developed for support of Science Technology Engineering and Math (STEM) education in an engineering curriculum. The experimental apparatus discussed in the paper is a heat pump demonstration unit with LabView data collection and visualization software. The use of modern technology in the classroom is illustrated in this paper by using a heat pump demonstration unit to illustrate the physical principles of air conditioning and heating. Data collection and acquisition/instrumentation, data reduction curriculum is addressed by using an automated data collection system to gather data for the heating and cooling processes. The main objectives of the study were to i) expose STEM students to LabView based data collection, ii) enhance the curriculum of air conditioning and measurements science by using hands-on facilities, iii) develop technical report writing and data reduction skill sets. The experiment is conducted in small teams of 3 to 4 students in order to make the experiential learning a more intimate process. The heat pump hardware is used to illustrate real world working system. The experiment is composed of a compressor, an evaporator, a condenser and throttling valve. The unit allows for operation as both a heat pump and a refrigeration unit. Thus illustrating the concept of Coefficient of Performance (COP) and Energy Efficiency Ratio (ERR) for both the heat pump and the refrigeration mode are enabled. The unit works on R134A and water as the working fluids. The unit is instrumented with a control thermostat allowing the set-point of the device to be changed. Thermocouples, pressure transducers and flow rate meters are used to collect live data which is fed to the LabView based data-acquisition platform. By using such equipment in the teaching of the Air Conditioning curriculum, it allows the students

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Guo, Jilin, Weihua Li, Yajun Zhang, Ruixia Yu, Jizhong Ma, and Dongwang Meng. "Recent Advances in Integrated Nuclear Heating Reactor Technology." In 18th International Conference on Nuclear Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/icone18-29272.

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The recent advances in utilization of nuclear heating reactor technology are to couple with seawater desalination process, in which process steam and fresh water is combined to produce, steam turbine is used, thermal and membrane processes are joined. In this technical concept, the “zero discharge” to environment will be realized due to using nuclear energy as the heat source for process steam and seawater desalination. Combined process steam and fresh water produce will make the product’s cost lower and make the whole system economic results better. The special design features of nuclear heating reactor will ensure that any radiological contamination can be excluded from fresh water. As joining thermal process and membrane process seawater desalination, the step utilization of thermal energy and reuse of waste heat can be realized.

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Taira, Kazuya, Kazuyuki Hokamoto, Shigeru Itoh, Akihisa Mori, and Rolf A. Pruemmer. "Hot Explosive Compaction of Hard Powders Using Cylindrical Configuration." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93483.

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We tried hot explosive compaction to make bulk materials of hard-to-consolidate powders using cylindrical configuration. By heating above 1000°C, it is possible to give the ability of plastic deformation for hard ceramic powders and also possible to enhance the surface melting to bond each particle. Using the cylindrical configuration, hot explosive compaction experiment was carried out for consolidation of TiB2 powders at elevated temperature. A central hole and a melting spot at the end of the tube were observed for a sample recovered. High compaction density and high hardness (above 3000 VHN highest) were measured for the samples recovered. The central hole and the melting spot are considered to be generated by the formation of mach stem at the center and the high-velocity collision towards the end plug. Numerical simulation was carried out using AUTODYN-2D code and compared with the experimental results for the TiB2 compacts.

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Kostenko, Y., D. Veltmann, and S. Hecker. "Steam Turbine Hot Standby: Electrical Pre-Heating Solution." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90464.

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Abstract Growing renewable energy generation share causes more irregular and more flexible operational regimes of conventional power plants than in the past. It leads to long periods without dispatch for several days or even weeks. As a consequence, the required pre-heating of the steam turbine leads to an extended power plant start-up time [1]. The current steam turbine Hot Standby Mode (HSM) contributes to a more flexible steam turbine operation and is a part of the Flex-Power Services™ portfolio [2]. HSM prevents the turbine components from cooling via heat supply using an electrical Trace Heating System (THS) after shutdowns [3]. The aim of the HSM is to enable faster start-up time after moderate standstills. HSM functionality can be extended to include the pre-heating option after longer standstills. This paper investigates pre-heating of the steam turbine with an electrical THS. At the beginning, it covers general aspects of flexible fossil power plant operation and point out the advantages of HSM. Afterwards the technology of the trace heating system and its application on steam turbines will be explained. In the next step the transient pre-heating process is analyzed and optimized using FEA, CFD and analytic calculations including validation considerations. Therefor a heat transfer correlation for flexible transient operation of the HSM was developed. A typical large steam turbine with an output of up to 300MW was investigated. Finally the results are summarized and an outlook is given. The results of heat transfer and conduction between and within turbine components are used to enable fast start-ups after long standstills or even outages with the benefit of minimal energy consumption. The solution is available for new apparatus as well as for the modernization of existing installations.

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Makimura, Yuki, Hideo Tomita, and Shin-ichi Motegi. "Improvement of superheated steam generator by induction heating." In 2010 International Conference on Computer Applications and Industrial Electronics (ICCAIE). IEEE, 2010. http://dx.doi.org/10.1109/iccaie.2010.5735008.

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Reports on the topic "Stem heating"

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Simpson, William T. Heating times for round and rectangular cross sections of wood in steam. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2001. http://dx.doi.org/10.2737/fpl-gtr-130.

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Aalto, P. J., and D. B. Chen. Application of imitation steam'' systems to hot water district heating and cooling systems. Office of Scientific and Technical Information (OSTI), October 1991. http://dx.doi.org/10.2172/5066089.

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Laurinat, J. E., N. M. Hassan, T. S. Rudisill, and N. M. Askew. Analysis of Steam Heating of a Two-Layer TBP/N-Paraffin/Nitric Acid Mixtures. Office of Scientific and Technical Information (OSTI), July 1998. http://dx.doi.org/10.2172/676769.

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Williams, C., and J. Swenson. Balancing single pipe steam heating systems: An opportunity for energy conservation in the multi-family market. Office of Scientific and Technical Information (OSTI), October 1987. http://dx.doi.org/10.2172/5957506.

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Kupperman, D. S., A. C. Raptis, and R. N. Lanham. Detection and location of leaks in district heating steam systems: Survey and review of current technology and practices. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/10141872.

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Kupperman, D. S., A. C. Raptis, and R. N. Lanham. Detection and location of leaks in district heating steam systems: Survey and review of current technology and practices. Office of Scientific and Technical Information (OSTI), March 1992. http://dx.doi.org/10.2172/5434678.

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Werdon, M. B., P. W. Layer, and R. J. Newberry. 40Ar/39Ar laser step-heating data and spectra from sandstone and volcanic rocks in the Northern Brooks Range, Alaska. Alaska Division of Geological & Geophysical Surveys, 1998. http://dx.doi.org/10.14509/1859.

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Kellett, D., and N. Joyce. Analytical details of single- and multicollection 40Ar/39Ar measurements for conventional step-heating and total-fusion age calculation using the Nu Noblesse at the Geological Survey of Canada. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2014. http://dx.doi.org/10.4095/293465.

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Heating and cooling equipment (steam and water). Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/311235.

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Heating and cooling equipment (steam and water). Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/311274.

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