EVS LAB 1 AIM – To investigate how the greenhouse effect operates. SAFETY PRECAUTIONS- * Do not touch the light bulb as it would be hot. * Handle all equipment carefully‚ especially the thermometers and the test tubes- as these can break. VARIABLES:- INDEPENDENT VARIABLES: * Time intervals between each reading DEPENDANT VARIABLES: * Temperature readings CONTROL VARIABLES:- * Distance of one bulb to another * Height of each bulb from surface APPARATUS * 2 thermometers
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The Effects of ECB on Corn Crop Yield Abstract In this experiment we explore the infestation of ECB (European Corn Borer) on different types of corn and how it effects the corn crop yield. The corn is grown in a controlled environment with the only changing variables being the type of corn and the concentrations of the infestation of the ECB. Varying levels of infestation are tested on a corn crop throughout a 140 day growing season‚ at the end of the season the crops are then measured for
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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
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heat exchanger is a device built for efficient heat transfer from one medium to another. The media may be separated by a solid wall‚ so that they never mix‚ or they may be in direct contact.[1] They are widely used in space heating‚ refrigeration‚ air conditioning‚ power plants‚ chemical plants‚ petrochemical plants‚ petroleum refineries‚ natural gas processing‚ and sewage treatment. One common example of a heat exchanger is the radiator in a car‚ in which the heat source‚ being a hot engine-cooling
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In the data table above‚ the mass of penny‚ copper‚ and zinc was needed in order to determine the percent composition of copper and zinc. The mass of penny was taken on the scale in the beginning of the procedure before anything was done to the penny‚ and it was 2.51 grams. After the reaction with the hydrochloric acid and drying the copper‚ the mass is 0.35 grams. To get the mass of zinc‚ the mass of the penny was subtracted by the mass of copper. The mass of zinc is 2.16 grams. The penny is 14%
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Effect of Temperature on Solubility Lab Purpose: What is the solubility of minerals in water? What is the relationship between temperature and solubility? Hypothesis: If salt and sugar are each tested in water of varying temperatures‚ then salt and sugar’s solubility will increase as the temperature also increases. Materials: Two 250 mL beakers Tap water 100 mL graduated cylinder Hot plate Two petri dishes Glass stirring rod Salt Sugar Thermometer
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Heat exchanger A heat exchanger is a device that is used to transfer thermal energy (enthalpy) between two or more fluids‚ between a solid surface and a fluid‚ or between solid particulates and a fluid‚ at different temperatures and in thermal contact. In heat exchangers‚ there are usually no external heat and work interactions. Typical applications involve heating or cooling of a fluid stream of concern and evaporation or condensation of single- or multicomponent fluid streams. In a few heat exchangers
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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)
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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
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1) What was meant by the term "the earths heat budget" (5) The Earth’s Heat Budget Solar Insolation - The primary source of energy to drive our global climate system (including atmospheric and‚ to a lesser extent‚ oceanic circulation) is the heat we receive from the Sun‚ termed solar insolation. The spectrum of light which comes from the Sun is shown above. The spectrum of light in the atmosphere and at the Earth’s surface is shown below. Insolation arrives at the edge of our atmosphere primarily
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