A common way to express the solubility of a given solute-solvent pair is to. The experiment requires that the solubility of borax be found at. This knowledge can be used to look at relationships between the solubility properties. Report the average Ksp of solubility of KHT.
How to Write a Summary of an Article? This report will show the acquired understanding of the refrigeration cycle by using Thermodynamics lab report essay example and second laws of thermodynamics.
In order to analyze this system several assumptions where made such like an isentropic process at the compressor an isenthalpic expansion in the throttling valve. Diagrams will be provided to depict these thermodynamic processes in addition to computing the heat transferred to the system and the work input to the compressor.
The Refrigeration lab was conducted to gain a better understanding of the refrigeration cycle, Carnot cycle and to compare the ideal cycle. Also, determent the heat transfers by using the mass and energy balance. It also includes the process of reducing and maintaining the temperature of a body below the general temperature of its surroundings.
In other words, the refrigeration means a continued extraction of heat from a body whose temperature is already below temperature of its surroundings.
In this lab 1,1,1,2-Tetrafluoroethane Ra was used as refrigerant. Since energy cannot be destroyed according to first law of thermodynamics.
In a refrigerator, heat is virtually pumped from a lower temperature to a higher temperature. According to Clausius Statement of Second Law of Thermodynamics states that heat will not pass cold to hotter region without the aid of an external agency. Thus, process can only be performed with the aid of some external work.
It is thus obvious that supply of power is regularly required to drive a refrigerator. Theoretically, a refrigerator is a reversed heat engine or a heat pump which pumps heat from a cold body and delivers it to a hot body. The substance, which works in a pump to extract heat from a cold body and to deliver it to a hot body, is known as refrigerant.
Description of Refrigeration cycle description: Figure 1 gives a schematic representation of the four essential mechanical components in this cycle.
Refrigeration Cycle components Compressor: The compressor in a refrigeration system is essentially a pump. It is used to pump heat uphill from the cold side to the hot side of the system Condenser: The condenser or cooler consists of coils of pipe in which the high pressure and temperature vapour refrigerant is cooled and condensed.
As the high-pressure high temperature liquid refrigerant passes the throttling valve seating, its pressure and temperature drop to that of the evaporator.
The drop in temperature is changed liquid phase to a mixture of low-pressure and temperature liquid and vapour enter the evaporator without any change in enthalpy Evaporator: Refrigeration cycle on pressure — enthalpy diagram.
In cycle the refrigerant vapour is compressed to a higher temperature and pressure The compressed vapour is then condensed isobarically which results in heat rejection to the surroundings The next step is the adiabatic throttling of the refrigerant to the low temperature and pressure The final step is where the refrigerant is evaporated at low temperature and pressure, which results in the absorption of heat from its surroundings Figure 3 According to first law of thermodynamics energy heat, workcannot destroyed but energy changing from one form to another.
In order to simplify the calculation for the energy balance, the following assumptions were made: The heat transfer of the condenser is the heat loss, in other words Q and is given by: Power Factor — Coefficient of performance is defined as: T — Convective heat transfer occurs between the air and the refrigerant and this is can be calculated using the following: Heat transfer refrigerant Heat transfer water Q W Figure 4 A reversed Carnot cycle is shown on p-h diagrams in Figures respectively.
The processes of the cycle are as follows: The refrigerant is compressed isentropically as shown by the curve and on p-h diagrams. During this process the T2 temperature of refrigerant decrees from.This laboratory focused on the thermodynamic processes involved when two incompressible substances are mixed together.
12 experiments were performed, 10 involving the combination of a measured amount of hot and cold water and 2 involving the combination of ice and liquid water, the majority of these experiments were performed three times. IB Chemistry Lab Report Design Example— Effect of Temperature on Solubility of Potassium Chloride in Water Research question How does temperature affect.
Laboratory Reports. This sample report is of an experiment we will be completing later in the semester. Enthalpy change of reaction Essay. Introduction: Thermochemistry is the branch of chemistry that studies the energy and heat associated with chemical reactions and/or physical transformations - Enthalpy change of reaction Essay introduction.
A reaction may release or absorb energy, and a phase may change, such as in melting and boiling. Sample Page: 1/9. Topics this document covers: This is an Essay / Project.
Essays / Projects are typically greater than 5 pages in length and are assessments that have been previously submitted by a student for academic grading.
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