PID CONTROL1.- Demonstration of the basic principles of free and forced convection.
2.- Comparison between free and forced convection.
3.- Free convection in flat surfaces.
4.- Forced convection in flat surfaces.
5.- Dependence of the heat transmission with the temperature.
6.- Dependence of the heat transmission with the speed of the fluid.
7.- Dependence of the heat transmission with the exchanger geometry.
8.- Temperature distribution in the additional surfaces.
9.- Study of the advantage of using spiked and bladed surfaces in heat transmission in free convection.
10.-Study of the advantage of using spiked and bladed surfaces in heat transmission in forced convection.
11.-Comparative study between the free convection of a horizontal surface and vertical surface. Other possible practices:
12.-Sensors calibration.
13-31.- Practices with PLC.
1. TCLFC. Unit:
This Unit allows to study the efficiency of different exchangers, analyzing the heat transmission coefficients of each of the exchangers exposed to different airflows.Stainless steel tunnel of rectangular section, 700 mm long. In the tunnel three type of different heat exchangers can be set. Viewer that allows a good visualization of the exchanger that is in use. Stabilizers to guarantee an uniform air flux. 9 Temperature sensors: 2 temperature sensors measure the air temperature at the inlet and outlet of the area of heat exchange, temperature measurements, at different distances of the base of the dowels and blade exchangers, are made by other five temperature sensors that are introduced by one side of the tunnel, 1 temperature sensor for the heating resistance and 1 temperature sensor in the exchangers. Flow sensor, for measuring the air flow generated.
3 Aluminium exchangers: Flat heat exchanger, Dowels heat exchanger and Blade heat exchanger. Heating resistance of 150W for each exchanger, computer controlled.
Variable speed fan, computer controlled, which generates air flux through the tunnel.
2. TCLFC/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.
Realtime 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. TCLFC/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: 370 x 610 x 920 mm. Weight: 25kg.
Control Interface: 490x330x310 mm. Weight: 10 Kg.
Hiện tại chưa có ý kiến đánh giá nào về sản phẩm. Hãy là người đầu tiên chia sẻ cảm nhận của bạn.
