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Refrigeration lab report abstract

21/04/2021 Client: muhammad11 Deadline: 2 Day

I need : Abstract, Result and Discussion and Conclusion for this report " prelab 2019"

u need to follow the objective on the report in order to know what to do. use my data "Refrigeration lab data r6" and compare it with with original data "refrigeration Data" using excel.

lab manual is provided. i provided an old report (_Refrigeration.pdf.) if that helps u but no copying from them at all ( i can add more) . i can provide some info and guidelines about abstract or results and discussion.

all figures and tables (e.g. t-test) from excel must be in the report in appendix section.

u might use the old reports but u may paraphrase.R2_Bandar Comparing the Coefficient of Performance for Varying Flowrates of Refrigerant through the Refrigeration System Group R2 Abdulaziz Fahad Giovanna Caruso Jason Ellis Written by: Bandar Alotibi 4/20/2017 R2_Bandar Abstract The process of refrigeration is an essential process in the industry. This process is accomplished by the use of a working fluid and mechanical energy to facilitate the transfer of heat from cold region to a hotter region. The process is affected by multiple parameters but in this paper of interest is the effect of the compressor setting and the refrigerant flow on the coefficient of performance (COP) of the refrigeration cycle. For this experiment the relationship between compressor speed and coefficient performance of the Armfield RA-1 MKII was determined. The performance of a refrigeration equipment can be determined using the coefficient of performance that relates the amount of heat transferred per unit of work added to the system. From the data gathered, maximum COP was achieved at 1% compressor setting with a value of 8.2 ± 0.32 while the lowest at the 100% setting with a value of 4.8 ± 0.38. It could be concluded that process is more efficient at low compressor settings with low refrigerant flow thus resulting in low effluent pressure. This is indicative of the overdesigned refrigeration cycle for the process simulated thus it could be used for a more intensive cooling process. . It was determined that with a 95% confidence level the sample means were not equal. Therefore, increasing the compressor speed had a significant effect on the coefficient of performance of the RA-1 MKII refrigeration unit. Introduction Refrigeration is the process of lowering the temperature of an enclosed space by forcefully removing the heat and transferring it elsewhere by means of a working fluid. Traditionally the process of refrigeration was made to occur naturally by means of temperature gradient where heat moved freely from an area of high temperature to an area of low temperature as applied in ice boxes [1]. Currently, refrigeration is accomplished by means of mechanical work which aids the transfer of heat through a cycle. The purpose of refrigeration is to create a low temperature zone in the space or object heat is absorbed [1]. The principle is applied in air conditioning equipment to provide the required cool environment in rooms for human comfort. The most popular use of refrigeration however is in preservation of perishables such as in homes, supermarkets and hotels. The goods are kept at low temperatures to discourage the growth of bacteria. In medicine, refrigeration is employed to provide very low temperatures for preservation of drugs and body R2_Bandar tissue samples. Most industrial cooling processes such as condensation of gases before storage and transportation and the cold treatment of materials also use the concept of refrigeration. The Objective of the experiment is to establish how refrigeration loop coefficient of performance is affected by varying the compressor speed, and to determine whether there is an optimum operation condition that would lead to the highest coefficient of performance. Theory Refrigerators are the heat transfer from a low temperature sink to a high temperature source. It uses refrigerant in cyclic devices to remove heat from the cold medium. The refrigeration cycle obeys the first law of thermodynamics.

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