Active Water-Wave Absorber Matthew Carney ME236: Control & Optimization of Distributed Parameters Professor Alex Bayen University of California‚ Berkeley 04.30.2007 UC Berkeley‚ Spring 2007 1 Contents • • • • • • Motivation Initial Idea Literature Search Focus Current Work Future Work www.emec.org.uk UC Berkeley‚ Spring 2007 2 Motivation • Significant amounts of energy is stored in the ocean • Large potential for extracting energy from waves • Control is the key to optimizing
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FUNDAMENTAL CONCEPTS Heat transfer is energy in transit‚ which occurs as a result of temperature gradient or difference. This temperature difference is thought of as a driving force that causes heat to flow. The concepts of heat transfer and temperature‚ the key words in the discipline of heat transfer‚ are 2 of the most basic concepts of thermodynamics. dffffffffff rifffff orfff ffffffffff fv ing ff ce Rate of transport process= fffffffffff or rate = coefficient B driving force resist
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Problelm 3.6 Given data: Thi := 250 °C Tci := 30 °C mh := 0.15 kg s mc := 0.6 kg s cph := 2000 J kg⋅ K cpc := 1000 J kg⋅ K U := 1000 W m K 2 Finding Heat Exchanger Area(A0): 2 Cc := mc⋅ cpc = 600 m ⋅ kg K⋅ s 3 Ch := mh⋅ cph = 300 m ⋅ kg K⋅ s 3 2 Tco := mh⋅ cph⋅ Thi + mc⋅ cpc⋅ Tci mh⋅ cph + mc⋅ cpc 4 = 103.333 °C Tho := Tco Q := Ch⋅ ( Thi − Tho) = 4.4 × 10 W Thi − Tco − ( Tho − Tci) Thi − Tco ln Tho − Tci Cc Ch Ch Cc ε0 := if ( Cc
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HEAT AND MASS TRANSFER REPORT ON TRANSIENT HEAT CONDUCTION Submitted by CDT ARSHAD ALI CDT NIKHIL BHATIA Submitted to Associate Proffessor Pradeep Kumar Singh Indian Naval Academy Knowledge Begets immortality Certificate This is to certify that this project report entitiled “TRANSIENT HEAT CONDUCTION” by CDT ARSHAD ALI and CDT NIKHIL BHATIA during the academic year 2010-2014‚ is a bonafide record of work carried out under my guidance
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Practice Problems Set – 1 MEC301: Heat Transfer Q.1 The slab shown in the figure is embedded on five sides in insulation materials. The sixth side is exposed to an ambient temperature through a heat transfer coefficient. Heat is generated in the slab at the rate of 1.0 kW/m3. The thermal conductivity of the slab is 0.2 W/m-K. (a) Solve for the temperature distribution in the slab‚ noting any assumptions you must make. Be careful to clearly identify the boundary conditions. (b) Evaluate T at the
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resistance R0 = 100 Ω at 0o C. If the resistance RT = 197.7 Ω in an oil bath‚ what is the temperature of the oil in the bath‚ given that RT = R0(1+αT)? Take R0 = 100 Ω R0 = resistance at 0o C α = 3.9083 x 10-3 /o C (2 marks) NDE Thermodynamics and Heat Transfer Exam 2008 Name: _______________________________________ Read all the instructions before starting Do not open this paper until instructed Time allowed: 2 hours (plus 5 minutes reading time) Attempt ALL question in Section A (questions 1
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Name: ______________________________________ Date: ________________________ Student Exploration: Heat Transfer by Conduction Vocabulary: conduction‚ convection‚ insulate‚ radiation‚ thermal conductor‚ thermal energy‚ thermal insulator Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Suppose two frying pans have been left on the stove with the burners on. One of the frying pans has a metal handle and the other has a wooden handle. 1. Which handle do you think you could
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The 5th Wave by Rick Yancey contains a multitude of conflicts. Some of those are minor conflicts and some are major. One major conflict is the obvious humans versus aliens hostility that drives Cassie forward and reminds her of why survival is important; a minor conflict would be Cassie coping with the reality that she murdered somebody for no reason other than her paranoia‚ and a final minor conflict would be the antagonism between Ben and Reznik. Firstly‚ the most conspicuous conflict throughout
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its booming and trendsetting entertainment industry. The new image gained from the Hallyu Wave has also paved the way for smoother global transaction and relation. (Lee‚ Sue Jin 2-3) This new image embodies the more positive yet intrinsic qualities of the Korean spirit: A spirit of industrialism‚ passion and innovation for their work. The Korean government has also recognized the potential of the Hallyu Wave as the nation’s prime export. Hallyu has been deemed as the nation’s ‘soft power’ due to its
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Wave A is the S-wave Because the velocity starts at 4 and it reflects at 2‚900 km. also known as the outer core. Wave B is the P-wave because the velocity starts at 8 and it refracts at 2‚900 km. and it refracts at 5‚100 km. also known as the inner core. The mantle starts at 1‚800 km. because wave A and wave B both refract at that point and the outer core starts at 2‚900 km. because wave A reflects from that point and wave B refracts at that point. So the boundary from the mantle to the outer core
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