Central air conditioning training and assessment device (network-based)

NegotiableUpdate on 11/13

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Nature of the Manufacturer: Producers

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Overview

DB-JDW12 Central Air Conditioning Training and Assessment Device (Network Type) I. Product Overview DB-JDW12 Central Air Conditioning Training and Assessment Device (Network Type) System adopts water-cooled units

Product Details

DB-JDW12 Central Air Conditioning Training and Assessment Device (Network Type)

1、 Product Overview
The DB-JDW12 central air conditioning training and assessment device (network type) system adopts a water-cooled unit, stainless steel frame structure, and a dedicated room is established at the terminal for customer simulation. The simulation in the hall directly utilizes the original space of the classroom, and uses water dividers and collectors to distribute and adjust the cooling or heating capacity. The entire central air conditioning system is controlled by Mitsubishi FX2n-48MR PLC programmable controller and industrial bus, and the computer communicates with the PLC through the communication bus to control the operation of the entire central air conditioning system. The operating parameters of the air conditioner are collected by various sensors and sent to the computer through a communication bus for real-time monitoring through dedicated central air conditioning configuration control software. The configuration software requires the ability to synchronously display the device structure, control principles, and processes of the system in the form of animation.

（1） Function
1. Cognition and use of central air conditioning system
2. Principles of Refrigeration and Heat Exchange Technology
3. Identification and Application of Common Sensors in Central Air Conditioning Systems
4. PLC programming and control application of central air conditioning
5. Operation and assessment of central air conditioning
6. Assessment of Central Air Conditioning Operation Protection and Daily Maintenance Operations
7. Central air conditioning fault maintenance and assessment
8. Application of frequency converter
9. Touch screen application
10. Application of Computer Data Collection and Configuration Control Technology
11. Network communication technology and its applications.
12. Equipped with an automatic overflow protection system
（2） Configuration
1. Electrical parameters
Working power supply: three-phase five wire 380V ± 10%, 50Hz
Safety protection: It has grounding protection, leakage protection, and overcurrent protection.
Rated power:<5KW
2. System Object Configuration
The overall structure of the equipment is the same as the actual central air conditioning system, using an open stainless steel frame structure, and the layout of each component is reasonable and easy to operate. The system consists of a refrigeration unit, a cooling water system, a chilled water system, a heating system, an air conditioning system (duct components), a simulation room, an electrical control cabinet, a computer, and is equipped with a water collector, a water separator, and an expansion tank.
(1) Refrigeration unit
It consists of a compressor, a spiral condenser, a spiral evaporator, a liquid storage tank, a thermal expansion valve, a sight glass, a drying filter, etc. The pipeline is also equipped with control valves and other necessary components for practical training. The sight glass in the pipeline can observe the refrigerant status and other equipment. The refrigeration unit mainly completes the refrigeration work, and the refrigerant is R22.
(2) Cooling water system
Composed of one spray cooling tower unit and two cooling water pumps, it mainly completes the cooling and heat dissipation work of the refrigeration unit.
(3) Chilled water system
Composed of 2 chilled water pumps, water separators, water collectors, expansion tanks, etc., it mainly completes the chilled water circulation work of the refrigeration unit.
6. Heating system
Composed of a simulated boiler (electric heating type) and one hot water pump, it mainly completes the heating work.
(5) Air conditioning system (duct components)
Composed of filters, surface coolers, electric heaters, ordinary fans, air ducts, etc., it mainly completes the function of air conditioning.
(6) Simulated Room
Composed of one set of fan coil units, one set of temperature controllers, and an air volume regulation system, it mainly completes the temperature setting and air conditioning of the room.
(1) Control device configuration
The entire central air conditioning system is controlled by a PLC programmable controller and industrial bus. The computer communicates with the PLC through a communication bus to control the operation of the entire central air conditioning system. The operating parameters of the air conditioner are collected by various sensors and sent to the computer through a communication bus for real-time monitoring through dedicated central air conditioning configuration control software. All operational data of the central air conditioning can be displayed on the on-site control cabinet, and full manual and automatic operation can be performed.
3、PLC: 三菱 FX2N-48MR
4. Inverter: Mitsubishi FR-S540E-0.75K-CH
5. Touch screen: 5.7-inch color touch screen
(2) Software configuration
2. PLC programming software, accompanied by PLC training programs and training manuals.
3. Central air conditioning configuration software.
(3) Network monitoring and intelligent assessment software enable teachers and students to monitor the operation status of central air conditioning simultaneously on 30 computers, and collect and display relevant data such as pressure and temperature of central air conditioning. The teacher's machine is set to malfunction, and the student desk determines the fault point through monitoring data and sends a fault code to resolve the equipment malfunction. The teacher's end simultaneously records the relevant data of students' answers, generates transcripts, and has printing function.
(1) Communication configuration
Multiple computers can be networked to control the system.
(2) Tool and instrument configuration
1. One branded desktop microcomputer (provided by the school)
2. 1 digital multimeter
3. 1 set of assembly tools
（3） Central air conditioning configuration list

serial number	name	unit	quantity	Detailed parameter indicators
1	compressor	Taiwan	1	2HP R22 50HZ 220V
2	starter	only	1	50UF
3	liquid reservoir	a	1	R22 1KG
4	condenser	only	1	spiral
5	hand valve	only	2	1/4
6	High and low pressure gauge	only	2	Low pressure gauge: -0.1~1.8Mpa, high pressure gauge: -0.1~3.8Mpa
7	expansion valve	only	1	RF22 Φ3 -60℃～10℃
8	fan	a	1	～220V
9	Duct components	set	1	Internally equipped with filters, evaporators, fans, etc
10	heat pump	Taiwan	2	~220V 50HZ 300W Head 35 meters
11	cold water pump	Taiwan	2	220V 50HZ 370W with a lift of 32 meters
12	Electromagnetic valve (liquid)	only	1	Ф10m 220V
13	evaporator	only	1	spiral
14	filter	a	1	F10 R22
15	sight glass	a	1	F10
16	thermostat	only	1	~220V 50HZ set temperature range: 5 ℃~35 ℃
17
18	thermocouple	only	8	K-type
19	Working principle simulation demonstration board	block	1	Color LED dynamic demonstration
20	Simulated Room	set	1	1200mm×1200mm×1800mm
21	Simulated boiler	set	1	40L 1500W inner liner rated pressure 0.7mpa
22	cooling tower	a	1	3T
23	water tank	set	2	transparent
24	Supporting framework	set	1	steel
25	control cabinet	Taiwan	1	Built in PLC, frequency converter, AC contactor, control switch, etc
26	connecting wire	article	1	aviation plug
27	Assessment software	set	1	Central air conditioning control training, can set 15 faults
28	Experimental Operation Manual	set	1
29	Computer trolley	Zhang	1	Spray painted steel structure
30	PLC	Taiwan	1	FX2N-48MR
31	frequency converter	Taiwan	1	三菱 FR-S540-0.75K-CH
32	touch screen	Taiwan	1	5.7-inch color touch screen
33	Temperature acquisition module	block	2	三菱 FX2N-4AD
34	Pressure collection module	block	1	三菱 FX2N-2AD
35	Variable frequency speed regulation module			三菱 FX2N-2DA
36	pressure sensor	a	2	Range: Low pressure 0-0-1.6Mpa, high pressure 0-3.8Mpa
37	server	set	1	16 ports, network
38	Intelligent Answering System	set	1	Including student question answering device and network installation
39	Gift of 1 set of assembly and maintenance tools	set	1	One word, cross screwdriver, pointed nose pliers, diagonal pliers, corresponding three types of wrenches, etc
40	multimeter	only	1	number

（4） DB-JDW12 Central Air Conditioning Training and Assessment Platform (Network Type) System Composition Diagram

网络型中央空调实训考核装置,网络型空调实训台