ATENG 12838 — Computer Controlled Free and Forced Convection Heat Transfer Unit
(for main items)
- With this unit there are several options and possibilities:
- Main items: 1, 2, 3, 4, 5 and 6.
- Optional items: 7, 8, 9, 10 and 11.
- Let us describe first the main items (1 to 6):
- 1 ATENG 12838. Unit:
Bench-top unit.
Anodized aluminum frame and panels made of painted steel.
Main metallic elements made of stainless steel.
Diagram in the front panel with distribution of the elements similar to the real one.
- Stainless steel tunnel of rectangular section, 700 mm long, painted and resistant to
corrosion.
In the tunnel three type of different heat exchangers can be set.
Methacrylate viewer that allows a good visualization of the exchanger that is in use.
Stabilizers to guarantee an uniform air flux.
- Eight temperature sensors, (“J” type):
Two temperature sensors measure the air temperature at the inlet and outlet of area of
heat exchange.
Temperature measurements, at different distances of the base of the pins and fins
exchangers, are made by five temperature sensors that are introduced by one side of the
tunnel.
Temperature sensor in the exchangers.
- Maximum working temperature: 120 ÂşC.
Flow sensor for measuring the air flow generated.
- Three aluminum exchangers: Unit: ATENG 12838
- Flat heat exchanger: 100 x 100 mm.
- Pins heat exchanger: seventeen pins, each one of 10 mm diameter and 125 mm longitude. Included exchangers
- Fins heat exchanger: nine fins, each one of 100 x 125 mm
- Computer controlled heating element, power: 150 W each exchanger.
- Variable speed fan, computer controlled, which generates air flux through the tunnel, range: 0 – 1200 l/min.
Measurement from the computer.
- The complete unit includes as well:
Flat exchanger
Advanced Real-Time SCADA.
Open Control + Multicontrol + Real-Time Control.
Specialized Control Software based on LabVIEW.
National Instruments Data Acquisition board (250 KS/s, kilo samples per second).
Calibration exercises, which are included, teach the user how to calibrate a sensor and the
importance of checking the accuracy of the sensors before taking measurements.
Projector and/or electronic whiteboard compatibility allows the unit to be explained and
demonstrated to an entire class at one time.
Pins exchanger
Capable of doing applied research, real industrial simulation, training courses, etc.
Remote operation and control by the user and remote control for technical support,
are always included.
Totally safe, utilizing 4 safety systems (Mechanical, Electrical, Electronic & Software).
Designed and manufactured under several quality standards.
Optional ICAI software to create, edit and carry out practical exercises, tests, exams,
calculations, etc. Apart from monitoring user's knowledge and progress reached.
This unit has been designed for future expansion and integration. A common expansion is
the Scada-Net (ESN) System which enables multiple students to simultaneously
Fins exchanger
operate many units in a network.
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Complete Technical Specifications (for main items)
- TCLFC/CIB. Control Interface Box:
The Control Interface Box is part of the SCADA system.
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 from -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.
Simultaneous 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.
TCLFC/CIB
All the actuators and sensors values and their responses are displayed on only one screen in the computer.
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, heating elements, control valves, etc.
Real time computer control for parameters involved in the process simultaneously.
Open control allowing modifications, at any moment and in real time, of parameters involved in the
process simultaneously.
Three safety levels, one mechanical in the unit, another electronic in the control interface and
the third one in the control software.
- 3 DAB. Data Acquisition Board:
The Data Acquisition board is part of the SCADA system.
PCI Express Data acquisition board (National Instruments) to be placed in a computer slot. Bus
PCI Express.
- 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)=±10 V. Data transfers=DMA, interrupts, programmed I/0. DMA channels=6.
- Analog output:
Number of channels=2. Resolution=16 bits, 1 in 65536.
- Maximum output rate up to: 900 KS/s. DAB
- Output range (V)=±10 V. Data transfers=DMA, interrupts, programmed I/0.
- Digital Input/Output:
- Number of channels=24 inputs/outputs. D0 or DI Sample Clock frequency: 0 to 100 MHz.
- Timing: Number of Counter/timers=4. Resolution: Counter/timers: 32 bits.
The Data Acquisition board model may change at any moment, providing the same or better
features than those required for the unit.
- 4 TCLFC/CCSOF. Computer Control + Data Acquisition + Data Management Software:
The three softwares are part of the SCADA system.
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 simultaneous 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 KS/s (kilo samples per second).
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 the teacher to modify texts, instructions. Teacher’s and
TCLFC/CCSOF
student’s passwords to facilitate the teacher’s control on the student, and allowing the access to
different work levels.
This unit allows the 30 students of the classroom to visualize simultaneously all the results
and the manipulation of the unit, during the process, by using a projector or an electronic
whiteboard.
5 Cables and Accessories, for normal operation.
- 6Manuals:
- This unit is supplied with 8 manuals: Required services, Assembly and Installation, Interface and
Control Software, Starting-up, Safety, Maintenance, Calibration & Practices manuals.
- References 1 to 6 are the main items: ATENG 12838 + TCLFC/CIB + DAB + TCLFC/CCSOF + Cables and Accessories + Manuals are included
in the minimum supply for enabling normal and full operation.
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