Heat transfer lab manual pdf ht lab manual pdf notes. Measurement of the convective heattransfer coe cient rosaria conti, aurelio agliolo gallitto, emilio fiordilino dipartimento di fisica e chimica, universit a di palermo via archira 36, i90123 palermo, italy abstract we propose an experiment for investigating how objects cool down toward the thermal equilibrium with its surrounding through. Introduction and background heat transfer theory provides a direct means of developing engineering estimates of the rate of heat transfer in various practical situations. As i circulated among the groups, leaning in to ask questions and make observations. Each experiment is concluded with a complete lab report which states objectives. It also forms a basis for the topics in the remainder of this chapter. Overall heat transfer coefficient is independent of the fluid temperature and position within the heat exchanger. Desktop experiment modules demos can augment understanding at multiple points in the heat transfer course. The experiment value of thermal conductivity of metal rod is less than the standard value because i the thermal conductivity of a material may depend on temperature and also the temperature of the material does change with time ii also, it.
Conduction is the transfer of heat from an atom molecule to an atom molecule within a. See the appendix for calculations of mean free path for the air molecules in this experiment. Parallel flowcounter flow heat exchanger apparatus 11. Observe the reaction of the other coins, which represents a transfer of kinetic energy. Our planet, earth, receives solar energy in the form of light from.
The heat conduction experiment is a chemistry lesson from layers of learning unit 212 about the properties of metals. Heat transfer is fundamental to such everyday activities as home heating and cooking, as well as many industrial processes. My favorite heat transfer experiment my students and i both love doing science experiments. Heat transfer experiment of a deep downhole heat exchanger ddhe was carried out in winter in tianjin. The molecules of the warm water first collide with the metal molecules in the bowl of the spoon. Heat is a type of energy transfer that is caused by a temperature difference, and it can change the temperature of an object. Experiments in heat transfer and thermodynamics edited by. This experiment focus on the heat conduction for the cylindrical metal bar arrangement. To plot temperature gradient along composite wall structure.
It also aims at verifying the seidertate equation to find the convection. The test result shows that the average thermal output is 270 kw. Introduction radiation, energy transfer across a system boundary due to a t, by the mechanism of photon emission or electromagnetic wave emission. Molecules with more heat energy move faster, and molecules with less heat energy move slower. This laboratory exercises is used to investigate the heat transfer response of simple geometrical shapes that are suddenly exposed to convection with a. Layers of learning has handson experiments in every unit of this familyfriendly curriculum.
Instead, scientists must study heat by how it affects matter. The purpose of this experiment is to study details of radiation heat transfer mechanism and test parameters of radiation heat transfer experiment. Nassar, phd, peng department of chemical engineering annajah national university nabluspalestine revised by dr. The experiment is designed to determine the convection coefficient of heat transfer when the test fluid or fluid being cooled is flowing in the laminar flow regime. To verify the stefenboltzmann constant for thermal radiation. The manual presents detailed descriptions of experiments. Experiment 2 study of heat transfer by natural convection from a horizontal cylinder introduction an extended surface is commonly used in reference to a solid that experiences energy transfer by conduction within its boundaries.
Object the purpose of this experiment is to study the technical details and test parameters of radiation heat transfer. As part of a space experiment, a small instrumentation pack age is released. Heat transfer experiment of a deep downhole heat exchanger. This book is a collection of experiments in heat transfer and thermodynamics contributed by leading engineering educators. Students learn by doing, perhaps engineering students especially, and they will better understand the principles of heat transfer and thermodynamics by conducting experiments and seeing results. It mounts on a base plate with a clear schematic of the experiment layout. Introduction there are three modes of heat transfer. Performance test on a vapour compression air conditioner. Radiation heat transfer radiation differs from conduction and convection heat t transfer mechanisms, in the sense that it does not require the presence of a material medium to occur. This assumption neglects other modes of heat transfer that may be present.
Conduction lab report heat transfer laboratory lab 1. A heattransfer laboratory experiment with shellandtube. Put the temperature sensor in the cup and cover the cup. Browse the list of issues and latest articles from experimental heat transfer. As the name suggests, heat transfer is the travel of heat or thermal energy from one object or entity to another. The demo system can illustrate conduction of various materials, thermal energy generation, thermal contact resistance, heat dissipation from fins, and convection. A variety of highintensity heat transfer processes are involved with combustion and chemical reaction in the gasi. Also plot the temperature distribution in both the cases along the length of heat of heat exchanger. There are three means through which heat transfer can take place. Place six pennies on a flat surface, which will represent atoms. This transfer takes place in three ways conduction, convection, and radiation. Third year mechanical engineering list of experiments sr. Conduction, convection, and radiation introduction we have learned that heat is the energy that makes molecules move.
An experimental study on heat transfer and fluid flow of rough plate heat exchanger using al 2 o 3 water nanofluid m. Since energy is invisible, this often requires special equipment. Fling a shooter penny towards the group of coins, which represents an atom with excess kinetic energy. Experiment 1 measurement of thermal conductivity of a. Heat experiment test bed the heat experiment test bed will be used for all of the heat experiments that you are about to do. The rod is heated internally by an electric resistance heater. The arrangement and organization provide a convenient means of giving instruction on handling the equipments. Heat transfer, however, can occur in the absence of a medium as well. The molecules in the bowl of the spoon are moving faster, and they are closest to the molecules in the lowest part of the handle. It provides cold water and heater power to the optional experiments and all the instruments needed to measure their performance. The molecules in the bowl of the spoon are moving faster, and they are closest. Experiment regarding heat exchanger concurrentcountercurrent flows at same rate and different rates. Remember that conduction involves direct collisions between the molecules. Lab heat transfer background often it is necessary in science to predict energy flow and even to measure this flow.
Convective heat transfer pertains to the removal of heat by either. Ht1 introduction to engineering heat transfer these notes provide an introduction to engineering heat transfer. The stefanboltzmann law equation 1 describes the heat radiated from an object into space. Extended surface heat transfer thermodynamics tecquipment. We have seen in previous chapters that energy is one of the fundamental concepts of physics. Measurement of the convective heattransfer coe cient. Pdf heat exchanger lab experiment chemical engineering. The ddhe was installed in a 2070 m deep well, the hot water was pumped out through the insulated inner tube and returned through the outer annular to the geothermal reservoir. Fin convection experiment the purpose of this experiment is to determine the convective heat transfer coefficients for free and forced convection over a fin. It is effective in helping undergraduate students in understanding the concepts and applications of heat transfer by convection and condensation. From to i determination of thermal conductivity of insulating powder 04 06. To determine the thermal conductivity of insulating powder. As we learned earlier in this chapter, heat transfer is the movement of energy from one place or material to another as a result of a difference in. Whether you realize it or not, heat conduction is an important part of our lives.
Tags heat transfer heat transfer lab manual heat transfer lab manual pdf ht ht lab manual ht lab manual pdf jntu ht lab manual jntua ht lab manual jntuh ht lab manual jntuk ht lab manual lab manual previous jntuk 22 syllabus books b. We also learned that as molecules heat up and move faster, they spread apart and objects expand get bigger. The gas goes through various cleanup and pipedelivery processes to get to our stoves. A simple experiment that utilizes coins can be used to teach heat conduction. Thermodynamics and heat transfer the study of the relationships between heat and work energy and the systems in which energy is transferred is known as thermodynamics. Heat transfer is one concentrated subdivision within the field of thermodynamics, where the time rate of transfer is of particular interest. Heat transfer through conduction 1 record room air temperature 2 heat water in a beaker to 70 degrees celsius. List of issues latest articles volume 33 2020 volume 32 2019 volume 31 2018 volume 30 2017 volume 29 2016 volume 28 2015 volume 27 2014 volume 26 20 volume 25 2012 volume 24 2011 volume 23 20092010 volume 22 2009. The purpose of this manual is to make it easy for students to perform simple experiments in heat transfer. We also introduce the concept of internal energy, which can be increased or decreased by heat transfer. From this experiment, the cocurrent flow with hot and cold water flow with same flow rate shows a higher efficiency in transferring heat as the overall heat transfer coefficient, change in temperature, mean temperature efficiency and heat flux are the highest compared to cocurrent flow. Read the initial temperature of the water around 65 degrees. For your particular heat transfer experiment, the source of the heat energy is the warm water.
The apparatus consists of a central heater sandwiched between two sheets. Last week we did my favorite experiment for introducing the concept of heat transfer. They are versatile, inexpensive, and portable experiments. For this experiment it will be assumed that the power input into the cylinder is equal to the heat dissipated by the rod. You probably use it every single day when youre cooking a meal or using a radiator. To determine total thermal resistance and thermal conductivity of composite wall. In this experiment students will use the ht14 and the ht10xc to setup an experiment to measure the heat transfer coefficients of both forced convection as well as that of radiation. Convective heat transfer refers to the removal of heat by either. Heat transfer lab page 11 experiment 1 composite slab apparatus overall heat transfer coefficient aim. This sciencestruck post discusses the methods of heat transfer and its applications in detail.