Unit: TCEC. Boiling Heat Transfer Unit PID CONTROL
(Open Control + Multicontrol + Real Time Control)
- From COMPUTER (standard)
- From PLC (optional) Control
Interface Box SCADA. EDIBON Computer Control System Cables and Accessories Manuals Data Acquisition
Board Software for:
- Data Acquisition
- Data Management
- Computer Control

1.- Visual demonstration of the three boiling modalities.(convective, nucleate and film boiling)

2.- Determination of the thermal flow and the superficial heat transfer coefficient.

3.- Effect of the pressure on the critical thermal flow.

4.- Film condensation.

5.- Demonstration of the liquid dragging for the vapour.

6.- Relationship between the pressure and the temperature.

Other possible practices:

7.- Air effect in an installation.

8.- Temperature sensors calibration.

9.- Flow sensor calibration.

10.-Pressure sensor calibration.

11.-Study of the hysteresis of the flow sensor.

12.-Gauge pressure/Enthalpy.

13.-Properties of the SES-36.

14-32.- Practices with PLC.

1. TCEC. Unit:

Students can investigate the modes of boiling and can make qualitative and quantitatives studies and assessments of
convective, nucleate and film boiling. This unit allows the student to see the processes taking place inside a transparent cylinder
and measure temperatures and heat flux under steady state conditions. Wide range of conditions can be investigated.
Bench-top unit, designed to employ the coolant SES-36.
Diagram in the front panel with similar distribution to the elements in the real unit.
Chamber: internal diameter: 90 mm., external diameter: 100 mm., and length: 300 mm. Heating resistance, computer
controlled (690 W). Serpentine condenser: a copper tube plated with a surface of 0.043 m . Load valve placed in the bottom 2
part of the cylinder and it is used for charging and discharging of the unit.
Water flow control valve, located in the conduction line of water, that regulates the water flow that inputs the serpentine.
Purge and safety valve. 5 Temperature sensors: to measure the temperature of the hot surface, of the coolant, at the water inlet,
at the water outlet and to determine the temperature of the saturated vapour. Pressure sensor. The electric power consumed by
the heating resistance is controlled from the computer. Flow sensor. Temperature circuit breaker. High-pressure cut out.

2. TCEC/CIB. Control Interface Box:

With process diagram in the front panel. The unit control elements are permanently computer controlled. Simultaneous
visualization in the computer of all parameters involved in the process. Calibration of all sensors involved in the process. Real
time curves representation. All the actuators’ values can be changed at any time from the keyboard. Shield and filtered signals
to avoid external interferences. Real time PID control with flexibility of modifications from the computer keyboard of the PID
parameters, at any moment during the process. Open control allowing modifications, at any moment and in real time, of
parameters involved in the process. 3 safety levels: mechanical in the unit, electronic in the control interface, and the third one
in the control software.

3. DAB. Data Acquisition Board:

PCI Data acquisition National Instruments board to be placed in a computer slot. 16 Analog inputs. Sampling rate up to: 250
KS/s. 2 Analog outputs. 24 Digital Inputs/Outputs.

4. TCEC/CCSOF. PID Computer Control+Data Acquisition+Data Management Software:

Flexible, open and multicontrol software. Management, processing, comparison and storage of data. Sampling velocity up to
250,000 data per second. It allows the registration of the alarms state and the graphic representation in real time.

5. Cables and Accessories, for normal operation.

6. Manuals: This unit is supplied with 8 manuals.

Dimensions (approx.) = Unit: 700 x 700 x 720 mm. Weight: 70 Kg.
Control Interface: 490 x 330 x 310 mm. Weight: 10 Kg.