Refrigeration compressor performance test training platform, refrigeration compressor performance test training device

Refrigeration compressor performance test training platform, refrigeration compressor performance test training device KH-ZL81 refrigeration compressor performance test training device The KH-ZL81 refrigeration compressor performance test training device uses a vapor compression refrigeration cycle system, equipped with fully enclosed refrigeration compressors, condensers, evaporators and other refrigeration system real components, and is equipped with intelligent temperature regulators, flow meters, and pressure Meters, voltmeters, ammeters and other measuring instruments. It can not only provide training for measuring the performance parameters of refrigeration compressors, but also provide demonstration training for the basic principles of refrigeration cycles. It is applicable to the teaching and training of related courses of refrigeration majors in vocational colleges. 1. Device characteristics 1. This training device is established in accordance with the international standard GB / T 5773-2004 volumetric refrigeration compressor performance training method, with "evaporator liquid refrigerant circulation method" as the main measurement, and "water-cooled condenser calorimeter method" As an auxiliary measurement 2. A 1HP refrigeration unit is used. Both the condenser and the evaporator are shell and tube water heat exchangers. The system has a compact structure, reasonable layout, and beautiful appearance. 3. With voltage-type leakage protection, current-type leakage protection, overcurrent protection, overload protection, grounding protection, it can effectively protect people and equipment 2. Technical performance 1. Input power: single-phase three-wire ～ 220V ± 10% 50Hz 2. Working environment: temperature -10 ℃ ～ + 40 ℃ Relative humidity ＜ 85% (25 ℃) Altitude ＜ 4000m 3. Device capacity: <2.5kVA 4. Refrigerant: R22 5. Cooling capacity: 1.3kW 6. Weight: 100kg 7. Dimensions: 120cm × 60cm × 142cm 3. Basic configuration and functions 1. Control screen It adopts double-layer matt dense pattern spraying structure, which has novel shape. The refrigeration system is arranged on the uppermost layer, which can visually display the structure of the refrigeration system; the front is equipped with a power control and measurement instrument function board. The bottom is equipped with four universal wheels with brakes, which is easy to move and fix. 2. AC control unit Single-phase three-wire 220V AC power supply, the total power supply is controlled by a leakage current protector, and the operating current is 30mA 3. Refrigeration system 1 HP hermetic compressor, horizontal shell-and-tube condenser, sight glass, drying filter, manual throttle, liquid reservoir and dry evaporator 4. Circulating water system (1) 2 water pumps The main technical parameters are: Rated power: 95W Rated head: 6m Rated flow: 1.08 cubic meters / hour (2) 2 water tanks Made of stainless steel, which are the condenser circulating water tank and the evaporator circulating water tank (3) One heater (power 1000W) The output power can be adjusted by a potentiometer, used to heat the evaporator circulating water 5. Measuring instruments (1) 2 power meters (accuracy 0.5) Measure heating power and compressor power separately. Through the key control and digital display window to realize the intelligent control mode of human-machine dialogue, it can measure the active power, reactive power, power factor, voltage, current, frequency and load nature of the load; Factor test data (2) 1 digital thermometer (accuracy 0.5) Adopt PT100 platinum resistance as the sensor, the measuring range is -50 ～ 150 ℃. Switching through the keyboard, a total of 8 sets of temperature parameters are measured, which are compressor suction port temperature, compressor exhaust port temperature, condenser outlet temperature, evaporator inlet temperature, condenser inlet temperature, condenser outlet temperature Evaporator inlet temperature and evaporator outlet temperature (3) 2 vacuum pressure gauges (accuracy level 2.5) Range is -0.1 ～ 1.5MPa and -0.1 ～ 3.5MPa, respectively measure the low pressure side pressure and high pressure side pressure of the refrigeration system in real time (4) 2 flow meters (accuracy 0.5) Adopt glass rotor flowmeter, the measuring range is 16 ～ 160ml / min, measure the cooling water flow of condenser and evaporator respectively 6. Control instrument One high and low pressure controller: monitor the low-pressure side pressure and high-pressure side pressure of the refrigeration system in real-time 4. Practical training project 1. Familiar with the basic structure and working principle of vapor compression refrigeration cycle system 2. Understand the international standard GB / T5773-2004 volumetric refrigeration compressor performance use method 3. Use the evaporator liquid refrigerant circulation method (main measurement method) to obtain the refrigeration compressor refrigeration capacity 4. Use the water-cooled condenser heat balance method (auxiliary measurement method) to find the refrigeration compressor refrigeration capacity 5. Calculation and analysis of relative error of main and auxiliary cooling capacity 6. Calculation and analysis of energy efficiency ratio of refrigeration unit

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Refrigeration compressor performance test training platform, refrigeration compressor performance test training device

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