DYTYN-02 Solar Thermal Conversion System Training Platform
Release time：2024-07-04 16:00viewed：times
1. System composition
This platform includes three parts: photovolt*c unit, water circulation control system, and tr*ning system. Photovolt*c heat pump system is an innovative system that comprehensively utilizes light energy. It adopts mesh panel structure and modular functional design. It has the ability to generate electrical energy and thermal energy at the same time. Electrical energy is output to the tr*ning control system, and thermal energy is output to the hot water storage tank. During the thermal energy output process, the circulating medium is sealed in the circulation pipeline and exchanges heat with water through the heat exchanger in the water tank without polluting the water. During the operation of the system, the touch screen can read the operating parameters and perform related operation controls in real time.
The addition of the heat pump circulation system reduces the temperature of the photovolt*c module and greatly improves the utilization rate of light energy.
2. System parameters
1) Photovolt*c module: peak power (Pmax): 100 W; peak voltage (Vmp): 18.17V; open circuit voltage (Voc): 21.6 V; peak current (Imp): 5.51 A; short circuit current (Isc): 6.06 A, cold surface: water circulation heat dissipation, start and stop controllable.
2) Insulated water tank: 30L with coil (water tank capacity can be matched according to the system. To ensure the experimental effect, it is recommended to select a small capacity water tank); the inner tank is made of food-grade st*nless steel; 2-way circulating water inlet and outlet, temperature detection port and exhaust port.
3) Simulated light source: 500W halogen tungsten lamp, swung by a purple light worm reducer, simulating the movement from sun rise to sunset, with a movement angle of 110±5°
4) Simulated light source drag motor : power supply AC220V±10%, 50HZ; rated output power 90W, rated speed 1350rpm
5) Tracking sensor : adopts a four-quadrant high-precision photosensor, 6-way analog output, and output voltage 0-5V; the tracking sensor probe adopts a colorless and transparent shell, which is convenient for students to observe and learn.
6) Tracking system: dual-axis two-dimensional tracking, horizontal 270±5°, pitch 75±5°, accuracy ±0.5°; DC24V DC synchronous motor drive, rated speed 10rpm;
7) Light and temperature and humidity sensor module: illuminance 0-20K (LUX), accuracy 1%, temperature -40-80℃, accuracy ±0.5℃, humidity 0-99.9%RH, accuracy ±3%RH, isolated RS485 signal output
8) System auxiliary power supply: Mean Well DC24V/3A×2; Mean Well DC5V/2A×2
9) Tracking control unit: manual/automatic simulation of light source movement and photovolt*c tracking using Siemens S7-200-CPU226 m*n control module; tracking sensor analog input using 2 Siemens S7-200-EM231 analog expansion modules
10) Instrument display unit: 2 DC voltmeters DC0-50V; 2 DC ammeters DC0-5A; 1 1 AC voltmeter AC0-300V; 1 AC ammeter AC0-2A; isolated RS485 signal output
11) Battery pack: lead-acid battery 12V/12AH × 2 (pieces)
BMS battery management system: 56 battery strings; temperature collection points: 10 temperatures (maximum); voltage measurement accuracy: 5mV; temperature measurement accuracy: 1℃; current measurement accuracy: 0.2%; SOC measurement accuracy: 5%; balancing current: 50mA; 4 negative control outputs: drive current 1A, with insulation detection function; power supply voltage: 9~32V; power supply current: <200mA@12V, <120mA@24V, <80mA@32V; sampling loop current consumption: when the module is working: maximum 20μA, average 1μA; when the module is turned off: less than 10 nA;
12) Controller: DC12V/24V automatic switching, rated current DC10A, PWM (pulse width modulation) charging; with light control/time control output mode control function; the microcontroller adopts ARM core 32-bit high-performance large-capacity STM32F103ZET6 chip; the software is developed based on C language embedded real-time operating system (RTOS), and the circuit is modular and open, which is convenient for charging waveform and circuit electrical testing; it has charge and discharge indication, battery status indication, temperature compensation and other functions; it has battery reverse connection, night anti-recoil, lightning protection, photovolt*c current limiting, overcharge, over-discharge, load overload, short circuit and other protection functions; it has RS485 isolation communication and RS232 communication functions.
13) Off-grid inverter: input voltage DC12V; output AC220V±10%, 50HZ, 300VA, pure sine wave; input and output are isolated by high-frequency transformer; microcontroller uses ARM core 32-bit high-performance large-capacity STM32F103ZET6 chip; software is developed based on C language embedded real-time operating system (RTOS), circuit modular open design, convenient for boost drive waveform, SPWM inverter drive waveform, inverter output voltage and current waveform and related circuit electrical testing; with over-voltage and under-voltage shutdown, overload and other protection functions. With RS485 isolation communication and RS232 communication functions.
14) DC resistive load: 3W high brightness LED lamp; DC inductive load: 2.8W DC fan; AC resistive load: 15W AC warning light; Power resistor module: 0-2000 ohms continuously adjustable, power 120W, with dial, quantity 2;
15) Configuration touch screen: Kunlun Tongt* 7" embedded integrated touch screen; real-time monitoring of system power generation, power consumption and environmental parameters, as well as heat and other information; with historical curve display.
16) Virtual simulation software for electrical installation of building and intelligent building Based on unity3d design, users can choose different sizes of interactive interface according to computer configuration, and can choose six levels of image quality. The model in the software can be rotated 360°, enlarged, reduced, and translated. There are assistant prompts during the use of the software, as follows: A. Wet alarm system 1. System overview: Overview of wet alarm system 2. Equipment recognition: It has the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 6 multiple-choice questions, with prompts for correct and incorrect choices), and schematic diagrams (you can enter the equipment from the schematic diagram). The equipment includes: sprinklers, water flow indicators, signal butterfly valves, exhaust valves, fire alarm controls, high pressure gauges, high-level water tanks, Wia control cabinets, pressure regulators, flow switches, terminal water testing devices, dr*nage facilities, water pump connectors, hydraulic alarms, timers, wet alarms, butterfly valves, check valves, fire pumps, safety pressure regulators, fire
Pool.
3. Principle display: Display the working principle of the wet alarm system, 3D animation demonstration, 3D model is semi-transparent, and the internal water flow can be seen. Equipped with exercise module (built-in 4 multiple-choice questions, both correct and wrong choices are prompted)
4. Design layout: There are multiple-choice questions and calculation questions, each question is scored, and the correct answer and score are displayed after submission
B. Gas fire extinguishing system
1. System overview: Overview of gas fire extinguishing system
2. Equipment recognition: There are optimal viewing angles, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 8 multiple-choice questions, both correct and wrong choices are prompted), schematic diagram (you can enter the equipment from the schematic diagram). The equipment includes: nozzles, HFC-227 storage bottles, bottle head valves, heptafluoropropane check valves, high-pressure hoses, gas check valves, safety valves, weighing alarms, electromagnetic starters, selection valves, smoke alarms, and fire alarm controllers.
3. Principle display: Display the working principle of the gas fire extinguishing system, 3D animation demonstration, 3D model is semi-transparent, and the internal gas can be seen. Equipped with a practice module (3 multiple-choice questions built in, with prompts for correct and incorrect choices)
4. Design layout: There are 6 multiple-choice questions, each with a score. The correct answer and score will be displayed after submission.
C. Escape drill: Teaching is conducted in the form of fun games. Escape from the burning room within a limited time. Wrong choices will directly enter the score interface.
III. Completed experimental content
1) Learning the composition of the photovolt*c heat pump system
2) Tr*ning on connecting the heat pump circulation system pipelines
3) Tr*ning on setting up a photovolt*c off-grid power generation system
4) Tr*ning on setting up an operation tracking system
5) Medium heating efficiency, measurement and calculation
6) Exploration and measurement of photovolt*c module parameters (IV curve, maximum power, fill factor, etc.);
7) Performance analysis of photovolt*c systems, solar thermal systems, and photovolt*c heat pump systems;
8) Exploring the significance of circulating heat dissipation systems in photovolt*c thermal systems
9) Exploring the impact of environmental factors on off-grid solar power generation and thermal collection systems
10) Tr*ning on battery inverter with AC load and direct load
11) Instrument, PLC and host computer communication tr*ning
12) Hot water circulation control tr*ning
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