Heat engine

Introduction The refrigerator is a common household appliance that is an essential food storage technique in developed countries; it is made up of compartments which are thermally insulated and also has a heat pump which can be mechanical, electronic or chemical. The heat pump is a device which transfers heat from the interior of the fridge to an external environment, this means that the fridge is cooled to a temperature which is below the ambient temperature of the room that it is in. the…

current travels along through the filament, the free electrons are constantly collding into the molecules that make up the filament. The energy of each collision causes the atoms to heat up, which is due to the electrons being excited. A thinner conductor is less resistant to the movement of electrons and would therefore heat up more quickly versus a thicker conductor. As previously stated, when these excited electrons fall back to their normal levels, the electrons release the extra energy in…

Solution growth deposition This technique consists essentially of inserting the substrate into a solution containing hydrolysable metal compounds and pulling it out at a constant speed into an atmosphere containing water vapour. In this atmosphere, hydrolysis and condensation takes place. Finally the films are hardened by a high temperature cycle to form transparent metal oxides. Any hydrolysable compound including halides or nitrates but preferably metallo-organics are suitable…

Bernoulli’s law is derived from the energy conservation between “kinetic energy and static energy associated with pressure” of an ideal fluid (Encyclopaedia Britannica, n.d.). An ideal fluid is a fluid with a steady flow, incompressible, does not generate heat and has no angular momentum (Brown, S n.d). W…

Microwave (MW) assisted Esterification of Benzoic Acid (BA) offers the advantage of transformation of energy and heating throughout the volume efficiently in a shorter period and eliminates the use of excess solvent, during the course of reaction. The present study aims to assess the conversion and selectivity for the production of methyl benzoate compounds by esterification of benzoic acid using microwave irradiation. Effects of operating parameters such as reaction time, feed composition,…

Project of Semester One Problem Statement : We use the boiled water in our daily life but which of the home use heat generating appliances that we used to boil water is the most efficiency? Introduction : Different heat generating appliances, such as electric kettle, microwave, electric thermos flask, convection oven and slow cooker have difference efficiency of appliances. Home use heat generating appliances look pretty much the same on the outside, but they vary greatly in terms of…

2.1. Theoretical Background 2.2. Material Selection Material selection plays an important role as the humidifier has to deal with a pressure of 2 Bar and temperature ranging from ambient to 90oC (maximum) and have to bare a load of 80 Newton. Simultaneously it should be lighter than aluminum and should be cheaper and fabricating time should be less and it should be capable of mass production and before all this it should serve the purpose. when developing plastic parts. Selection of an…

3. Results and Discussion 3.1. Temperature dependence of D.C. Electrical Resistivity The temperature dependence of the D.C. electrical resistivity of all the samples of Co-Cr ferrite system was studied using two probe method in the temperature range of 200-7000C. The resistivity of the prepared samples was calculated using the relation 1. From fig. 1 and 4, it is clear that the resistivity decreases with increasing temperature ensuring the semiconducting nature of the prepared spinel ferrites…

The electric skillet is like the electric iron thou it has a little divider surface and a cover that comes close by. The skillet gives this straightforward adjustment contrasted with the frying pan, and this completely changes how these two machines are put into utilization. The skillet can likewise sit over a table, and it gives warmth, and it warms up inside minutes. The dividers help to contain the sustenance that is being cooked, and it's additionally perfect when cooking nourishment with…

practical purpose we can describe that phonon is neither a wave nor a particle "quasi-particle" thus, it has momentum ℏq [33]. Phonons play a major role in understanding materials and their physical properties of condensed matter such as specific heat and thermal conductivity. Moreover, the average number of phonons in the q^thmode in thermal equilibrium obeys Bose-Einstein distribution which given by: ( n) ̅_q= 1/(exp⁡(ℏω(q)/(k_B T))-1) (‎2 4) Where k_B is Boltzmann's…