Lectures Lectures of Heat Transfer Heat Transfer Rate Processes Mode Conduction Convection Radiation Transfer Mechanism Diffusion of energy due to random molecular motion Diffusion of energy due to random molecular motion plus bulk motion Energy transfer by electromagnetic waves Rate of heat transfer (W) q = - kA dT dx q = h A(Ts-T∞) q = σ ε A(Ts4-Tsur4) By Mr. Amjed Ahmed Ali Syllabus of Heat Transfer (English)‚ (2 hours/ week‚ Applied 2 hours /week) 1.Heat transfer by conduction
Free Heat transfer
Effects of Particle Size‚ Temperature‚ Concentration‚ and a Catalyst on Reaction Rate Introduction: Chemical reactions can be affected by a number of different factors. Particle size‚ temperature‚ concentration of a solution‚ and catalysts play a big role in the rate of reaction‚ they determine how fast a reaction will occur. According to the collision theory‚ the rate of reaction depends on the frequency of effective collisions between particles. Every reaction is different in that they all
Free Chemical reaction Chlorine Sodium chloride
Preparation of Standard Solutions and Use of a Spectrophotometer to Measure the Concentration of an Unknown Solution Introduction Concentration is the ratio of the quantity of solute to the quantity of the solvent or the quantity of solution. By knowing this‚ CO(NO3)2 *6H2O Purpose What is the percent transmittance of six different solutions of cobalt (II) nitrate hexahydrate using a spectrophotometer? Materials * Graduated cylinder (10 mL) * Graduated cylinder (25 mL) * pipet
Premium Concentration Laboratory glassware Solution
No. 1: Heat Pump Experiment 1. Objective The objective of the experiment is to measure the Coefficient of Performance (COP) of a Heat Pump. 2. The experimental setup The equipment provided is a heat pump with pressure and temperature sensors placed at various locations. 3. Procedure Study the diagram and equipment provided and identify the various components of the Heat Pump – that is‚ the compressor (1-2)‚ the condenser (2-3)‚ the expansion valve (3-4) and the evaporator (4-1)
Premium Heat exchanger Heat HVAC
Mechanisms of Heat Transfer Prepared by: Ms. Ana Antoniette C. Illahi 1 Conduction • conduction (or heat conduction) is the transfer of thermal energy between regions of matter due to a temperature gradient. Heat spontaneously flows from a region of higher temperature to a region of lower temperature‚ and reduces temperature differences over time‚ approaching thermal equilibrium. Prepared by: Ms. Ana Antoniette C. Illahi 2 (Heat Current in Conduction) • • • • • • • • H - Heat Current
Free Heat transfer Heat Temperature
packing Thermometer heat source flasks [pic] [pic] [pic] heat source Structural Formulas: [pic] [pic] toluene Description: 40ml of an equimolar mixture of cyclohexane and toluene was obtained and transferred into a 100ml round bottomed boiling flask which contained boiling chips. The distilling column was packed with metal sponge and the height was measured in centimeters and recorded. The distillation apparatus was assembled and a heat mantle was set. Several
Premium Distillation
NOT FOR ELECTRONIC STUDENT ACCESS ONLY FOR CLASSROOM USE!! Unit 9: Stoichiometry Practice 1. Differentiate between the significance of the coefficients in a balanced chemical equation and the significance of the subscripts in a chemical formula. · Coefficients show the correct proportions of atoms and molecules in a chemical reaction. They are normal sized numbers placed at the beginning of the chemical formulas in a chemical reaction during the process of balancing. They tell how many of an entire
Premium Gas Ideal gas law Oxygen
of tartar‚ plus a filler like corn flour or rice flour which absorbs moisture. Baking powder is a mixture of leavening agents (baking soda‚ acid salts) and inert ingredients (cornstarch‚ calcium carbonate) that react in the presence of moisture and heat to release a gas (carbon dioxide). The leavening agents are the active ingredients that hold the necessary elements to produce the carbon dioxide gas. The inert ingredients are buffers (separators) that keep the baking soda from mixing with the acid
Premium Carbon dioxide
www.moalims.com KBSE Guess Paper IX Biology 2010 NEW PATTERN Section "A" (Multiple Choice Question) Q.1. Prepare multiple choice questions from your text book. Section "B" (Short Questions Answer - Zoology) Q.2. Define the following Physiology Ecology Cytology Taxonomy Palaeontology Genetics Bio-Chemists Embryology OR Write contributions of Al-Farabi‚ Ibn-Al-Haitham‚ Bu-Ali Sina in the field of Biology. Q.3. Write contributions of Galileo‚ Robbert Hook‚ Louis
Premium Phylum Plant Oxygen
1. INTRODUCTION Have you been to the gas station this week? Considering that we live in a very mobile society‚ it ’s probably safe to assume that you have. While pumping gas‚ you ’ve undoubtedly noticed how much the price of gas has soared in recent years. Gasoline which has been the main source of fuel for the history of cars‚ is becoming more and more expensive and impractical (especially from an environmental standpoint). These factors are leading car manufacturers to develop cars
Premium Internal combustion engine Automobile