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Computer Controlled Thermal Solar Energy Basic Unit

 
 
 

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DESCRIPTION

The unit is a system that transforms solar energy into calorific energy. It uses the thermosiphon system to heat water or the traditional pumping system. In both cases, the absorbed calorific energy is given by the solar radiation simulated, in our case, by a panel with powerful luminous sources. This Computer Controlled Unit is supplied with the EDIBON Computer Control System (SCADA), including: Control Interface Box + Data Acquisition Board + Computer Control and Data Acquisition Software, for controlling the process and the parameters involved.

 

SPECIFICATIONS

 

  • MINI-EESTC. Unit:

Anodized aluminium structure.
Main metallic elements in steel.
Diagram in the front panel with similar distribution to the elements in the real unit.
Solar panel (Thermal solar collector):
Metallic structure.
Pipes (already prepared) to connect the panel and the accumulator.
o Temperature sensors, type “J “, range: -40 to 750 C.
Accumulator tank of 30 l. approx.
Solar simulator:
Aluminium structure.
Solar spectrum lamps of 300W each one.
Feed wire.
Pumping equipment:
Impulse pump, computer controlled, range: 0-2l./min.; 0.6 bar.
Flowmeters.
Flow sensors, range: 0.2 - 6.5 l./min.
o 4 Temperature sensors, type “J “, range: -40 to 750 C.
Lamps intensity control.
Protection curtains.

  • MINI-EESTC/CIB. Control Interface Box :

Control interface box with process diagram in the front panel and with the same distribution that the different
elements located in the unit, for an easy understanding by the student.
All sensors, with their respective signals, are properly manipulated for -10V. to +10V computer output. Sensors
connectors in the interface have different pines numbers (from 2 to 16), to avoid connection errors. Single cable between the control interface box and computer. The unit control elements are permanently computer controlled, without necessity of changes or connections during the whole process test procedure. Simultaneously visualization in the computer of all parameters involved in the process.
Calibration of all sensors involved in the process. Real time curves representation about system responses. Storage of all the process data and results in a file. Graphic representation, in real time, of all the process/system responses. All the actuators’ values can be changed at any time from the keyboard allowing the analysis about curves and responses of the whole process. All the actuators and sensors values and their responses are placed in only one computer screen.
Shield and filtered signals to avoid external interferences.
Real time computer control with flexibility of modifications from the computer keyboard of the parameters,
at any moment during the process. Real time computer control for pumps, compressors, resistances, control
valves, etc. Open control allowing modifications, at any time and in a real time , of parameters involved in the
process simultaneously.
Three safety levels, one mechanical in the unit, other electronic in control interface and the third one in the
control software.
DAB. Data Acquisition Board:
PCI Data acquisition board (National Instruments) to be placed in a computer slot. Bus PCI.
Analog input: Number of channels= 16 single-ended or 8 differential. Resolution=16 bits, 1 in 65536.
Sampling rate up to: 250 KS/s (Kilo samples per second). Input range (V)= 10V.
Data transfers=DMA, interrupts, programmed I/0.Number of DMA channels=6.
Analog output: Number of channels=2. Resolution=16 bits, 1 in 65536.
Maximum output rate up to: 833 KS/s.
Output range(V)= 10V. Data transfers=DMA, interrupts, programmed I/0.
Digital Input/Output:Number of channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 1 Mhz.
Timing: Counter/timers=2. Resolution: Counter/timers: 32 bits.
MINI-EESTC/CCSOF. Computer Control+Data Acquisition+Data Management Software:
Compatible with actual Windows operating systems. Graphic and intuitive simulation of the process in screen.
Compatible with the industry standards.
Registration and visualization of all process variables in an automatic and simultaneously way.
Flexible, open and multicontrol software, developed with actual windows graphic systems, acting simultaneously
on all process parameters. Management, processing, comparison and storage of data.
Sampling velocity up to 250,000 data per second guaranteed.
Calibration system for the sensors involved in the process.
It allows the registration of the alarms state and the graphic representation in real time.
Comparative analysis of the obtained data, after the process and modification of the conditions during the process.
Open software, allowing to the teacher to modify texts, instructions. Teacher’s and student’s passwords to
facilitate the teacher’s control on the student, and allowing the access at different work levels.
This unit allows that the 30 students of the classroom can visualize simultaneously all results and
manipulation of the unit, during the process, by using a projector.
Cables and Accessories, for normal operation.
Manuals:
This unit is supplied with 8 manuals: Required Services, Assembly and Installation, Interface and Control
Software, Starting-up, Safety, Maintenance, Calibration & Practices Manuals.

 

REQUIRED SERVICES

  • Electrical supply: single-phase, 220V. /50 Hz or 110V/60 Hz.
  • Water supply.
  • Computer (PC).

 

DIMENSIONS & WEIGHTS

  • Unit: -Dimensions: 950 x 650 x 1200 mm. approx.
  • Weight: 60 Kg. approx.
  • Control Interface Box: -Dimensions: 490 x 330 x 310 mm. approx.
  • Weight: 10 Kg. approx.
  • PLC Module (PLC-PI): -Dimensions: 490 x 330 x 310 mm. approx.
  • Weight: 30 Kg. approx