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Tesi sul tema "Drying"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

PREZIUSO, MARCO. "Preservation of selected sourdough: comparison of freezing, freeze drying, drying and spray drying techniques." Doctoral thesis, Università degli studi del Molise, 2018. http://hdl.handle.net/11695/84477.

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La fermentazione con impasto acido è uno dei metodi più antichi utilizzati nell'industria dei prodotti lievitati da forno per la produzione di pane casereccio e di numerosi dolci tipici della tradizione italiana. L’impiego di “impasto acido” o “pasta madre” (impasto di tipo I) offre, rispetto all’uso del lievito di birra, numerosi vantaggi in termini di qualità sensoriale, nutrizionale e di shelf-life. L’impasto acido di tipo I, infatti, è caratterizzato da un consorzio microbico eterogeneo, rappresentato principalmente da batteri lattici e da lieviti, la cui fermentazione conferisce al prod

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2

Tham, Thing Chai. "Improving drying efficiency and energy saving for crumb natural rubber drying with combined drying technologies." Thesis, University of Nottingham, 2018. http://eprints.nottingham.ac.uk/52329/.

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Natural rubber (NR) or cis-1, 4-polyisoprene is obtained from the latex that is tapped from a tree known as Hevea Brasiliensis. It can be in the form of preserved latex concentrates or further processed into sheets, crepes, block rubber that associated with its unique characteristics such as great elongation strength, excellent building tack, low rolling resistance, low heat build-up and good low-temperature performance. These are essential characteristics in dynamic working environment and application especially for vehicle tyre and rubber thread. To produce good quality of technically specif

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3

Hashemi, Aghchehbody Seyed Jalaleddin. "Through drying of machine formed paper and drying nonuniformity." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=37702.

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Transport phenomena characteristics were determined for the through air drying of machine-produced printing and heavier papers. The momentum transport is strongly affected by the specifications of machine-formed papers, but of the drying rate characteristics only the critical moisture content varied between the types of paper tested. To determine the impact of individual parameters of commercial papermaking these experiments with machine-formed paper were supplemented by the use of handsheets. The papermaking parameters of beating, wet pressing, formation and pulp blending all strongly affect

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4

Bosch, Thomas. "Aggressive Freeze-Drying." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-177527.

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5

Gil, Arnaud, and Alex Raffier. "Wallpaper drying solutions : Feasibility study of a low temperature drying process." Thesis, University of Gävle, Department of Technology and Built Environment, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-754.

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<p>The wallpaper company Duro Sweden AB, one of the most important Scandinavian</p><p>wallpaper manufacturers, wants to decrease its energy use and costs and make its</p><p>production more environmentally friendly. It implies changes in the key process energy</p><p>use whom consists mainly by drying process using heat production from oil.</p><p>The purpose of this project, studied by the consulting company Sweco Theorells AB,</p><p>is to determine the feasibility of a change in the energy utilisation implemented to the</p><p>most representative process to propose future solutions’ basis on the

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6

Yang, Xinbo. "SUITABILITY EVALUATION OF EMERGING DRYING TECHNOLOGIES FOR FINE CLEAN COAL DRYING." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/theses/1688.

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The selling price of coal product in the market depends on the heating value or BTU content of coal, which is a function of both ash and moisture content. Typically the ash content of fine coal and coarse coal reporting to the clean coal belt of a coal preparation plant are relatively similar from each other, however, the moisture content of fine coal is much higher, i.e., 2 to 3 times that of the coarse coal. In that case, although the fine coal proportion of the total clean coal tonnage produced from a plant is in the 10 to 15% range, as much as 33% of the total moisture content in the clean

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7

Secmeler, Ozge. "Comparison Of Microwave Drying And Microwave Mixed-bed Drying Of Red Peppers." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1098979/index.pdf.

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The main objective of this work is to investigate whether the time required to dry red peppers in the diffusion controlled period can be reduced. For this purpose, the possibility of microwave drying in this period was studied. As comparison parameters the drying rates and color of the products were selected. The conventional drying was conducted under constant external drying conditions with air at 60 0C and 3.5 % RH and 1.0 m/s velocity in a batch dryer. For the microwave drying a domestic microwave oven with three power levels, 286, 397 and 560 W was used. Pre-experiments were done to obtai

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8

Irawan, Anton. "Isothermal drying of pore networks : influence of pore structure on drying kinetics /." [S.l.] : [s.n.], 2006. http://diglib.uni-magdeburg.de/Dissertationen/2006/antirawan.htm.

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9

Brunzell, Lena. "Energy Efficient Textile Drying." Licentiate thesis, Karlstad University, Faculty of Technology and Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-729.

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<p>Traditionally, textiles were dried outdoors with the wind and the sun enhancing the drying process. Tumble dryers offer a fast and convenient way of drying textiles independent of weather conditions. Tumble dryers, however, consume large amounts of electrical energy. Over 4 million tumble dryers are sold each year in Europe and a considerable amount of energy is used for drying of clothes. Increasing energy costs and the awareness about environmental problems related to a large energy use has increased the demand for dryers with better energy efficiency. The aim with this thesis is to show

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10

Polat, Osman. "Through drying of paper." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=75904.

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The first comprehensive set of measurements is obtained for rates of through drying paper with all drying conditions measured and controlled. Complete pressure drop-drying rate curves are determined for 235 handsheets of kraft paper of basis weights 25-150g/m$ sp{ rm 2}$ dried in air over a wide range of temperatures and throughflow rates.<br>The previous procedure of calculating permeability by Darcy's law is substantially in error at relevant throughflow rates. A new characteristic dimension for flow through both dry and moist paper is determined by application of fundamental momentum transp

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11

Some, D. K. A. "Ambient drying of maize." Thesis, University of Newcastle Upon Tyne, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.370637.

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12

Silayo, Valerian Cosmas Kanyengele. "Sun drying of grains." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262986.

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13

Simate, Isaac Nyambe. "Mixed mode solar drying." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246686.

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14

Klongpanich, Wiwat. "Longan drying in Thailand." Thesis, University of Reading, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280651.

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15

Gan, Kee Seng. "Solar drying of timber." Thesis, University of Strathclyde, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366956.

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16

Bond, Jean-François. "Drying paper by impinging jets of superheated steam : drying rates and thermodynamic cycles." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41047.

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Drying of paper by impinging jets of superheated steam was studied in an apparatus which closely simulates conditions for a potential industrial impingement dryer.<br>Drying was found to consist in a constant rate period, followed by a falling rate period where the drying rate decreases linearly with moisture content. The relation found between the constant rate and Reynolds number and temperature of the jet is consistent with a previous correlation for air impingement heat transfer, suitably modified for conditions in a steam environment. For a given mass flux, steam drying is slower than air

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17

Venkatachalapathy, Kamadenahally. "Combined osmotic and microwave drying of strawberries and blueberries." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0019/NQ44619.pdf.

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18

Changrue, Viboon. "Hybrid (osmotic, microwave-vacuum) drying of strawberries and carrots." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=102966.

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The main purpose of this study was to improve the performance of microwave assisted drying. The osmotic treatment was used as pretreatment due to its inherent low energy requirement attributes. The vacuum was applied to microwave drying system to capture low temperature vaporization concepts. The whole process might be called "osmotically dehydrated microwave vacuum drying". Carrots and strawberries were selected to study as a representative of vegetables and fruits, respectively.<br>The laboratory scale microwave vacuum dryer was setup and the preliminary tests were done with carrots and stra

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19

Geidobler, Raimund. "Cyclodextrins as excipients in drying of proteins and controlled ice nucleation in freeze-drying." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-167191.

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20

Alvaredo, Alejandra Mónica. "Drying shrinkage and crack formation /." Zürich, 1994. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=10754.

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21

Luna, Fabio. "Drying of Multicomponent Liquid Films." Doctoral thesis, KTH, Chemical Engineering and Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3778.

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<p>The convective drying of thin layers of multicomponentliquid mixtures into an inert gas, and the influence ofdifferent process controlling mechanisms on drying selectivityis studied. Drying experiments under gas-phase-controlledconditions are performed by low intensity evaporation, fromfree liquid surfaces, of ternary mixtures without non-volatilesolutes. Liquid-side-controlled experiments are carried out bydrying a multicomponent polymeric solution containing twovolatile components, one non-volatile polymer and an optionalnonvolatile softening substance.</p><p>Mathematical models to descri

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22

Varikooty, Jalaiah. "Ocular Discomfort Upon Tear Drying." Thesis, University of Waterloo, 2003. http://hdl.handle.net/10012/1239.

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<b>Purpose:</b> Assess the relationship between tear film drying and sensation between blinks. <b>Methods:</b> MATLAB sampled a slitlamp video camera, a potentiometer and a microphone while subjects kept one eye open for as long as possible. 23 subjects rated the intensity of the ocular sensation while video and voice data were collected simultaneously. The tear drying on the cornea was measured. <b>Results:</b> The sensation was triphasic. Two linear functions described the latter 2 parts of the data (r ≥ 0. 95). The correlation between TBUT and the elbow in the t

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23

Holmes, D. M. "Lateral drying of ceramic suspensions." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604187.

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Abstract (sommario):

Many ceramic processing routes, such as tape casting, screen-printing and ink jet printing, involve deposition of a suspension of ceramic particles in a prescribed shape on a substrate. As the liquid evaporates from the suspension, the particles pack together and liquid leaves the pores. In water-based suspensions, these processes often occur at fronts that move from the edge to the centre of the drying layer. This is known as lateral drying. As drying proceeds, the body can change shape, residual stresses can develop and cracking can occur. However, existing models cannot predict either the s

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24

Hassaballah, A. A. "Drying of alcohol by adsorption." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376626.

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25

Ameobi, John Babatope. "Maize drying with ambient air." Thesis, University of Newcastle Upon Tyne, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386835.

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26

Phoungchandang, Singhanat. "The solar drying of bananas." Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287810.

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27

Crisp, Jeremy. "The drying properties of rapeseed." Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316063.

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28

Tseng, Kuo-Shu. "Volatile retention during drying process." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326958.

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29

Laklouk, Abdussalam M. "Survival of salmonella during drying." Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278210.

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30

Revilla, Guillermo Osorio. "Spouted bed drying of liquids." Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.256286.

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31

Ingham, Andrew James. "Technological enhancements in freeze drying." Thesis, University College London (University of London), 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423019.

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32

Goodenough, Tim. "Electrohydrodynamically enhanced drying of foodstuffs." Thesis, University of Bristol, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289536.

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33

Marshall, Mark George. "A hybrid electroheat drying system." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310938.

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34

Chiu, Raymond Chi Hing. "Drying of granular ceramic films." Thesis, Ceramics Processing Research Laboratory, Massachusetts Institute of Technology, Materials Processing Center, 1991. http://hdl.handle.net/1721.1/13045.

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35

Hopkinson, Andrew Christopher Graham. "Cracking of drying ceramic dispersions." Thesis, University of Cambridge, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608101.

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36

Patel, Suresh Dahyabhai. "Freeze-drying and solubility studies." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184399.

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The medium offering the greatest resistance to heat transfer from the freeze-drying shelf to the moving and subliming surface is the space between the flat shelf top and the concave vial bottom. The resistance to heat transfer can be greatly reduced by improving the thermal conductivity of the intervening space. Several heat transfer augmentation devices, including a multilayered corrugated aluminum quilt and a conformable fluid cushion device, which fill this gap are described. The devices are inexpensive and easy to use. Experimental data show that the resistance of the intervening space is

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37

Tang, Yanfei. "Stratification in Drying Particle Suspensions." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/87435.

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This thesis is on molecular dynamics studies of drying suspensions of bidisperse nanoparticle mixtures. I first use an explicit solvent model to investigate how the structure of the dry film depends on the evaporation rate of the solvent and the initial volume fractions of the nanoparticles. My simulation results show that the particle mixtures stratify according to their sizes when the suspensions are quickly dried, consistent with the prediction of recent theories. I further show that stratification can be controlled using thermophoresis induced by a thermal gradient imposed on the drying su

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38

Du, Xi. "Membrane Drying of Ionic Liquid." University of Toledo / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1353077367.

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39

Heredia, Salgado Mario Alejandro. "Sewage sludge drying and combustion." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13409.

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Mestrado em Sistemas Energéticos Sustentáveis<br>A brief review of the paper pulp production process in order to understand the origin of the sewage sludge was performed. Then a general revision of the current treatment options for this type of waste was addressed. The thermal treatment by combustion was focused and a review of the state of the art of this process was performed. The high moisture content of sludge was identified as a major concern. Thus a revision of the state of the art regarding thermal drying of sewage sludge was performed. The drying behavior of sewage sludge from the pul

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40

Strachan, Scott. "Invertebrate Resistance to Wetland Drying." Thesis, Strachan, Scott (2016) Invertebrate Resistance to Wetland Drying. PhD thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/29962/.

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In regions with a drying climate, as waterbodies dry out more frequently or for longer, species traits interact with aquatic habitat influencing assemblage composition in wetlands. This thesis aimed to identify potential refuges from increased temperatures and altered water regimes for wetland invertebrates that resist drying using resting stages in the sediment. Using the literature on desiccation-responses by freshwater invertebrates, I reviewed relationships between life histories and the degree of desiccation to which individuals are exposed. Sediment microhabitats that retain moisture wer

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41

CAPOZZI, LUIGI CARLO. "Continuous Freeze-Drying of Pharmaceuticals." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2749555.

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42

Scarborough, David Eugene. "The effect of resonant acoustic oscillations on the drying of poly(ethylene) terephthalate." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/18939.

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43

Anandharamakrishnan, C. "Experimental and computational fluid dynamics studies on spray-freeze-drying and spray-drying of proteins." Thesis, Loughborough University, 2008. https://dspace.lboro.ac.uk/2134/8061.

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This thesis presents an experimental and computational fluid dynamics (CFD) study of spray-drying, spray-freezing and spray-freeze-drying of whey proteins. The effects of varying feed concentration (20 - 40% w/v) and outlet temperature (600 - 120 degrees Celcius) on whey protein denaturation (determined by DSC) and solubility at pH 4.6 (by Kjeldhal and RP-HPLC methods) have been investigated in a pilot-scale cocurrent spray dryer. The study confirms that low outlet gas temperatures (60 and 80 degrees Celcius) produce the lowest amount of denaturation, with almost complete denaturation observed

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44

Siebert, Tim [Verfasser]. "Improving drying: Investigations on structure changes during single and serial combination drying processes / Tim Siebert." München : Verlag Dr. Hut, 2020. http://d-nb.info/1219475254/34.

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45

Jay, Stephen. "Drying processess in the United Kingdom : assessment of industrial energy utilisation and efficiency of drying systems and the modelling of drying characters using neural networks." Thesis, Aston University, 1996. http://publications.aston.ac.uk/15330/.

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Drying is an important unit operation in process industry. Results have suggested that the energy used for drying has increased from 12% in 1978 to 18% of the total energy used in 1990. A literature survey of previous studies regarding overall drying energy consumption has demonstrated that there is little continuity of methods and energy trends could not be established. In the ceramics, timber and paper industrial sectors specific energy consumption and energy trends have been investigated by auditing drying equipment. Ceramic products examined have included tableware, tiles, sanitaryware, el

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46

Hjort, Mikael. "Solar Powered Paper Drying in Bangladesh : A feasibility study on using a solar thermalenergy to dry handmade paper in Bangladesh." Thesis, Uppsala universitet, Fasta tillståndets fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-210903.

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Solar energy has a great potential to give cheap and abundant energy to rural areas of the world, but is the technology ready to be implemented today? This stydy looked at the possibilities to introduce more renewable energy into the local hand-made paper production in Bangladesh. Specifically the potential of solar heated vacuum tubes filled with water as a heat carrier. This type of solar thermal collectors are cheap to produce, relatively efficient at converting both direct and diffuse solar energy into usable energy, and have a very simple construction that do not require a lot of training

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47

Burton, Steven W. "An investigation of z-direction density profile development during impulse drying." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/5560.

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48

Shivhare, Uma Shanker. "Drying characteristics of corn in a microwave field with a surface-wave applicator." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70344.

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Microwave drying of corn was investigated at selected levels of initial moisture content, absorbed power by grain, and temperature and superficial velocity of air at inlet. A surface-wave applicator was used to couple microwaves with the corn.<br>The drying rate curves indicated that the microwave drying of corn took place in the falling rate period. It was hypothesized that diffusion is the controlling mechanism for moisture transfer from within the kernel in microwave drying of corn.<br>A mathematical model was developed to describe the change in moisture content at the surface as a function

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49

Cheng, Wei Min 1964. "Microwave power control strategies on the drying process." Thesis, McGill University, 2004. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=81271.

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The current study was conducted for evaluating the effects of two different strategies viz., phase control and cycle control, on the microwave/air drying process. A phase-controlled electrical power regulator was developed and connected in series with the original cycle-controlled power regulator of an existing domestic microwave oven. The microwave oven was further modified such that combined microwave and convectional drying can be accommodated.<br>The system performance was evaluated. It was observed that phase-controlled power regulator could be successfully used for quasi-continuous

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50

Li, Heping. "Microwave assisted osmotic dehydration of apple cylinders under continuous medium flow conditions for improving moisture transfer rate and product quality." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85933.

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Abstract (sommario):

Microwave assisted osmotic dehydration (MWOD) under continuous medium flow conditions is a new process with good potential for quality optimization. It combines microwave process with osmotic dehydration and improves the mass transfer rate of osmotic dehydration process and product quality. The thesis describes the design and development of this process.<br>Preliminary studies on osmotic dehydration were carried out in two parts. First, the effects of processing time, temperature and solution concentration on mass transfer under conventional osmotic dehydration process were investigated

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