530.231_lab_No._3_08

530.231_lab_No._3_08 - 530.231 Engineering Thermodynamics...

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530.231 Engineering Thermodynamics Experimental Lab #2: Refrigeration System 1 530.231 MECH. ENGINEERING THERMODYNAMICS Fall, 2006 Laboratory Project No. 3: Refrigeration System Signup instructions The previously set groups should sign up (make an appointment) to perform the lab during available times provided in the Excel file. Aditya Nayak and Yuan Lu, the TAs, have a sign-up sheet. Since we have only one setup, you may choose either week 1 (October 20) or week 2 (October 27) to perform the experiments. Each lab session takes two hours. Available times are on a “first comes first served” basis. Objective The purpose of this laboratory assignment is to provide participants the opportunity to study a refrigeration system, to apply first law analysis to the cycle, and to determine C.O.P. as function of flow rate. Equipment Hampden Model H-6710-CDL Refrigeration Demonstrator Introduction The working scheme of refrigeration system is illustrated in chapter 11 of the textbook. Figure 11.34 gives the scheme of actual vapor-compression refrigeration cycles. In this experiment, we will work on a refrigeration demonstrator. Appendix A gives the layout of the setup. The following measurements are to be emphasized in this lab assignment: Pressure Measurement Pressure gauges have been placed at key locations of the system along the refrigeration circuit to monitor pressure changes resulting from external adjustments to the system. Gauge identification number and location; pressure measured in PSI (kPa); vacuum in Hg (mmHg): GP 1 Condenser Water In GP 2 Compressor Refrigerant Discharge GP 4 TEV Refrigerant In GP 6 Evaporator Refrigerant In GP 5 Evaporator Refrigerant Out GC 3 Compressor Refrigerant Suction GP 7 Condenser Refrigerant Out
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530.231 Engineering Thermodynamics Experimental Lab #2: Refrigeration System 2 GP 8 Condenser Refrigerant In NOTE: GP = Pressure Gauge, GC = Compound Gauge Determining the change in temperature Thermocouples have been placed at key locations along the refrigeration circuit to monitor temperature changes. Thermocouple identification number and location; temperature measured in
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530.231_lab_No._3_08 - 530.231 Engineering Thermodynamics...

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