engineering applications utilized in industrial‚ domestic and scientific purposes. The detailed goals include the study of how the refrigeration process is affected by the water flow rate through the condenser and evaporator. The optimal flow rate is determined for condenser and evaporator. Finally‚ the efficiency of the refrigeration system is analyzed. Theory Both refrigerators and heat pumps are used to alter the temperature in the specific area. However‚ the refrigeration systems perform the
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of low temperature (i.e.‚ water storage tank) to an area of high temperature (i.e.‚ environment). Regarding to the fig 3.1‚ beginning the cycle at the evaporator inlet (1)‚ the low-pressure liquid expands‚ absorbs heat‚ and evaporates‚ changing to a low-pressure gas at the evaporator outlet (2).The compressor (4) pumps this gas from the evaporator through the accumulator (3)‚ increases its pressure‚ and discharges the high-pressure gas to the condenser (5). The accumulator is designed to protect
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by boiling the liquor in a suitable type of evaporator and withdrawing the vapor (Coulson & Richardson‚1983). The objective of evaporation is to concentrate a solution consisting of non-volatile solute and a volatile solvent. In the overwhelming majority of evaporations the solvent is water. Normally‚ in evaporation the thick liquor is the valuable product and the vapor is condensed and discarded. Agitated thin film evaporators‚ wiped film evaporators‚ are designed to spread a thin layer or film
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Ventilation The air around us is warmed up by everyday activities such as breathings‚ washing and drying clothes‚ cooking food‚ running electric motors and using electric lights. The composition of the air around us can also be changed by: chemical pollutants‚ pollen‚ dust‚ tobacco smoke and odors. These changes will make the air stale if it stays in a confined space. This may make us feel hot and sticky and can make us less efficient at work. To stop the air around us from being stale we
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courtesy of Sporlan Valve Co.) The function of the thermostatic expansion valve (TXV or TEV) is to hold a constant evaporator superheat. When set and operating properly‚ the TXV will keep the evaporator active throughout its entire length. The conventional TXV is controlled by springs‚ bellows‚ and push rods. (See Figure 1.) The spring force is a closing force on the TXV. The evaporator pressure‚ which acts under the thermostatic element’s diaphragm‚ is also a closing force. An opening force is the
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function. –it keeps the evaporator supplied with enough refrigerants to satisfy all load conditions. It is not a temperature control‚ suction pressure control‚ or a humidity control. The refrigeration system can be defined as a closed system in which the process of absorbing and rejecting heat is performed by flowing a refrigerant in a vapor compression cycle. In its simplest form‚ the refrigeration system consists of five components: the compressor‚ condenser‚ evaporator‚ expansion device‚ and
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addition to the evaporator and micro channel parallel flow condenser. An experimental bench made up of original components from the air conditioning system of a compact passenger vehicle has been developed in order to check results from the model. The refrigeration circuit was equipped with a variable capacity compressor run by an electric motor controlled by a frequency converter. Effects on system performance of such operational parameters as compressor speed return air in the evaporator and condensing
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component sections‚ one outdoor and one indoor. The outdoor section is a compressor that starts the cooling process‚ while the indoor component is an evaporator and fan. The two sections are connected with a set of electrical wires and tubing used to transport air between the two sections. Indoor components Components | Functions | | Evaporator coil: It is where the heat exchange is done with the room. It consists of fins and tubes. | | Remote control: It is where user control the functions
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Abstract: This report will show the acquired understanding of the refrigeration cycle by using first 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. Table of Contents Abstract .
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DEVELOPMENT OF AN A/C SYSTEM USING WASTE HEAT OF AN IC ENGINE PROJECT REPORT Submitted by ALEX ROY JIJIN JOSEPH RAKESH R SAJI ABRAHAM K S SHAN ABSTRACT The refrigerating units currently used in road transport vehicle are of Vapour Compression Refrigeration system (VCRS). This system utilizes power from the engine shaft as the input
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