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Temperature, Pressure and Defrost Control Refrigeration Trainer
TPDCRT | Temperature, Pressure and Defrost Control Refrigeration Trainer
A. FEATURES
1. Teaching methodology using animation and narration explanation voice complete with job sheet and manual equipment. 2. Cycle system: compressor condenser receiver filter dryer sight glass solenoid valve heat exchanger expansion valve evaporator heat exchanger liquid separator compressor. 3. Hot gas defrost cycle: compressor solenoid valve capillary tube evaporator heat exchanger liquid separator compressor. 4. Can be operate on manual or using PLC control system, to control thermal control of pump down, and hot gas defrost. 5. Function of refrigeration performance automatic measuring data acquisition equipment and system monitoring program.
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Temperature, Pressure and Defrost Control Refrigeration Trainer
6. Measure temperature at each of compressor inlet and outlet, condenser inlet and outlet, expansion valve inlet and outlet, evaporator outlet, heat exchanger (gas) inlet and outlet, inside chamber and outside using thermo couples. 7. Measure of pressure within the range of -1 bar up to 35 bar at each of compressor inlet and outlet, condenser outlet, expansion valve outlet, and evaporator inlet by pressure sensors. 8. Measure of factors: refrigeration effect, compressor work, condensing effect, evaporating latent heat, amount of flash gas at expansion valve outlet, dry rate and humidity at expansion valve outlet, end coefficient of performance (COP), the abstract with temperature and pressure data measured. 9. Complete with text book related with refrigeration (theory and troubleshoot) and automatic control experiment (sequence, PLC, IC). 10. Windows based automatic measurement system, excel transfer capability RS232 interface. 11. Operating performance test of air cooling and cold storage performance test by increasing and decreasing air cooling and storage load performance test for the proper refrigerant charging.
B. TECHNICAL DATA Mechanical Device
1. Compressor : HP (min.), non CFC and non-HCFC, single phase 220 V, control box. 2. Condenser and fan motor: HP (min.), air cooling, single phase 220V, 50Hz, 10W. 3. Evaporator and blower fan
Evaporator chamber : transparent acrylic Evaporator: finned-tube type air cooling. Blower: voltage (220-240 V), AC 50/60 Hz 0,274 A, air flow (690-760 m3/hr) 220 CFM, noise 66 db (max), impeller reinforced plastic, aluminum alloy frame. Damper acrylic with rack and pinio, ration of opening and shutting 0-100%.
4. Nipple each on high-low pressure. 5. Expansion valve : manual type 3/2 ton (max) temperature -100C (min.) 6. Solenoid valve : range 3/8 inch (max), welding type 7. Filter dryer 3/8 inch, welding type 8. Pressure gauges each of high and low pressure, oil type 9. Sight glass, welding type.
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pressure test 33 kgf/ cm2 G. 11. Table :
a. Cover : aluminum profile. b. Drawer, cabinet.
Temperature, Pressure and Defrost Control Refrigeration Trainer
10. Receiver : cylinder type include a service valve. Hp, leak pressure 22 kgf/cm2G,
c. Rollers include fixing device.
Automatic Control Device
1. SELECT SWITCH, TOGGLE, BUZZER, PUSH SWITCH MODULE
a) Selector switch : 3 step, 2a b) Toggle switch c) Buzzer : DC 24 V d) DC indicator lamp : DC 24 V e) Push switch (1a 1b) f) Push switch (1a) g) Push switch (1b) h) Terminal.
2. MAGNETIC CONTACTOR & THERMAL RELAY MODULE
a) Magnetic Contactor : DC 24 V, 13A, 5a, 2b b) Thermal over load relay 10A, 1a, 1b. c) Thermal over load relay base
d) Terminal. 3. TERMINAL BASE MODULE
a) Magnetic Contactor : DC 24 V, 13 A, 5a, 2b b) Relay base c) Relay : DC 24 V, 8 Pin min
d) Terminal. 4. POWER MODULE
a) S.M.P.S : 24V, 3,1 3,7A b) N.F.B : 10 -20 1 single c) Volt Meter : DC 30 V Full Scale d) Am Meter : DC 3 A Full Scale e) AC indicator lamp : 220 240 V f) Toggle switch g) Fuse & Holder h) Terminal
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Temperature, Pressure and Defrost Control Refrigeration Trainer
5. MODUL SAKLAR PRESSURE
a) Pressure S.W : 10 kgt/cm2 b) Pressure S.W : 10 kgt/cm2 c) Terminal
6. MODUL RELAY DAN TIMER
a) Relay : DC 24 V, 8 Pin min b) Timer : DC 24 V, 60 sec, 8 Pin c) Timer : AC 220V, 24 hr
d) Terminal. 7. MODUL THERMOMETER
a) Electronic digital temperature meter : AC 220 V, -40 up to 100 0C b) Electronic digital temperature controller : AC 220 V, -40 up to100 0C c) Terminal.
8. MODUL TEMPERATUR CONTROL
a) Temp. control : -300C up to 300C b) Terminal.
9. EXTEND MODULE 1
a) Magnetic Contactor : DC 24 V, 13 A, 4a, 1b b) Thermal overload relay 10 A, 1a, 1b. c) Terminal base d) Terminal.
10. EXTEND MODULE 2
a) Relay : DC 24 V, 8 Pin min b) Timer : DC 24 V, 60 sec, 8 Pin c) Terminal base : 10 pin d) Terminal.
11. EXTEND MODULE 3
a) DC lamp : DC 24 V b) Select switch : 3 Step, 2a c) Buzzer : DC 24 Volt d) Push switch (1a)
e) Push switch (1b)
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Teaching Material
Temperature, Pressure and Defrost Control Refrigeration Trainer
1. Operation description of circuit using a switch, contact circuit using a magnetic contactor, contact circuit using a relay, a basic refrigeration circuit using a magnetic contactor and relay. 2. Operation of basic refrigeration system by a self return circuit for priority stopping and running. Description of a circuit for low and high temperature control by a thermal switch, a circuit for low and high pressure control by a pressure switch of a series circuit for low temperature and low pressure by a thermal switch and a pressure switch basic refrigeration system, of a circuit for pump down control in basic refrigeration system. 3. Operation of a circuit for high pressure control by a pressure switch manual and auto return. 4. Operation of a series circuit for low temperature and low pressure by a thermal switch hand a pressure switch in defrost refrigeration system. 5. Operation of a circuit for pump down control in defrost refrigeration system, of a circuit for hot gas defrost refrigeration.
C. DATA ACQUISITION DEVICE
1. Interface between mechanical device part and data acquisition system program using mother board and CPU equivalent to ATMEGA 128 TQFP type with RS232 equipped by SMPS system and sensor temperature and pressure with range. 2. Serial FX cable.
D. ACCESSORIES
1. Power cable. 2. Connection cable. 3. Circuit jack (banana jack). 4. Laptop : Dual core T3200, 2GB DDR2, 250 GB HDD, DVD/RW, WiFi, VGA integrated 256 MB, 14,1 WXGA Minimum, OS Windows Vista (10ea).
5. Printer : Inkjet, 9600 x 2400 dpi, Print Speed black 25 ppm print speed color 17 ppm, max
resolution 9600 (1ea).
