Name: Christopher Boodram Aketta Wylie Simeon Mohammed #110004795 Salomon Samaroo #111006223 Program: Chemical Engineering Technology * Cohort: 11 * Course: Physical Chemistry and Thermodynamics * Course Code: PCTH210D * Instructor: Title : Centrifugal Compressor Introduction: The equipment comprises of a 7-stage centrifugal compressor driven by an electric motor mounted on a support plinth. Clear acrylic inlet and outlet
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Determining the Enthalpy of a Chemical Reaction All chemical reactions involve an exchange of heat energy; therefore‚ it is tempting to plan to follow a reaction by measuring the enthalpy change (∆H). However‚ it is often not possible to directly measure the heat energy change of the reactants and products (the system). We can measure the heat change that occurs in the surroundings by monitoring temperature changes. If we conduct a reaction between two substances in aqueous solution‚ then the
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Data Table: Pecans Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Mass of 50 mL water (g) 50 50 50 50 50 Minimum Temperature of Water (C) 22 22.4 18.5 17.2 18.1 Maximum Temp. Of Water (C) 77.2 88.5 90.4 74.3 83.9 Initial mass of food (g) 4.8 5.4 5.1 4.7 4.5 Final Mass of food (g) 3.3 3.3 3.2 3.1 3.1 Length of time the food burned 4 minutes 4 minutes 3.45 minutes 3.83 minutes 3.6 minutes Cashews Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Mass of 50 mL water (g) 50 50 50 50 50 Minimum Temperature of Water
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MAGNETIC MAGNETIC REFRIGERATION a fruitful approach to reduce environmental pollution... ABSTRACT : The objective of this effort is to determine the feasibility of designing‚ fabricating and testing a sensor cooler‚ which uses solid materials as the refrigerant. These materials demonstrate the unique property known as the magneto caloric effect‚ which means that they increase and decrease in temperature when magnetized/demagnetized. This effect has been observed for many years and was used for cooling
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Chapter 6 DIFFUSION IN SOLIDS • How does diffusion occur? • Why is it an important part of processing? • How can the rate of diffusion be predicted for some simple cases? • How does diffusion depend on structure and temperature? Driving force for movement In general‚ force is a position derivative of energy (F = - dE/dr). In other words‚ if there is any energy difference in space‚ there is a force which will act on matters - Force will move things. (ex1) Potential energy by gravity:
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Pituitary Anterior – Located in the base of the brain attached to the hypothalamus. Growth Hormone(GH) – Stimulates an increase in size and rate of division of body cells; enhances movement of amino acids through membranes; promotes growth of long bones. Prolactin (PRL) – Sustains milk production after birth; amplifies effect of LH in males. Thyroid-stimulating Hormone (TSH) – Controls secretion of hormones from the thyroid gland. Adrenocorticotropic Hormone (ACTH) – Controls secretion of certain
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11 Using Energy © 2010 Pearson Education‚ Inc. Slide 1 © 2010 Pearson Education‚ Inc. Slide 2 © 2010 Pearson Education‚ Inc. Slide 3 © 2010 Pearson Education‚ Inc. Slide 4 Reading Quiz 1. A machine uses 1000 J of electric energy to raise a heavy mass‚ increasing its potential energy by 300 J. What is the efficiency of this process? A. B. C. D. E. 100% 85% 70% 35% 30% © 2010 Pearson Education‚ Inc. Slide 5 Reading Quiz 2. When the temperature of an ideal
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References: 1) http://www.ehow.com/about_5103936_twostage-air-compressor.html 2) Yunus A. Cengel‚ Michael A. Boles‚ Thermodynamics: An Engineering Approach‚ 6th edition. McGraw-Hill 3) Obert‚ E. F. & Young‚ R. L. Elements of Thermodynamics and Heat Transfer. New York: McGraw-Hill. 4) Experiment Handout.
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Thermodynamics I Spring 1432/1433H (2011/2012H) Saturday‚ Wednesday 8:00am 10:00am & Monday 8:00am - 9:00am MEP 261 Class ZA Dr. Walid A. Aissa Associate Professor‚ Mech. Engg. Dept. Faculty of Engineering at Rabigh‚ KAU‚ KSA Chapter #10 December XX‚ 2011 Announcements: Dr. Walid’s e-mail and Office Hours walid_aniss@yahoo.com Office hours for Thermo 01 will be every Sunday and Tuesday from 9:00 – 12:00 am in Dr. Walid’s office (Room 5-213). Text book: Thermodynamics An Engineering Approach
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OBJECTIVE To determine the change of standard Gibbs free energy for the decomposition of sodium hydrogen carbonate (NaHCO3) from the change of standard enthalpy and the change of standard entropy. THEORY Free energy is a state function that expresses the spontaneity of a chemical process in term of enthalpy and entropy change of a system under conditions of constant temperature and volume (Hemholtz free energy) and constant temperature and pressure (Gibbs free energy). It is a quantity of non-pressure-and-volume
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