This unit consists of a shell-and-tube heat exchanger and of a tank heated by an electric heater for the production of hot water pumped by a centrifugal pump. Tests can be carried out in co-current and counter-current. The automated version includes a PID controller that controls flow rates automatically via two pneumatic valves.
TRAINING PROGRAM
This unit enables to deepen the following issues:
• Heat transfer between fluids separated by a wall in co-current and counter-current
• Energy balance and calculation of efficiency
• Log Mean Temperature Difference (LMTD)
• Overall heat transfer coefficient (U)
• How flow rate and of temperature difference can affect the transfer coefficient
• Comparing the operating modes and performance of different types of heat exchangers
• Automatic flow control by PID controller
• System supervision by P.C.
TECHNICAL SPECIFICATIONS:
• Framework of AISI 304 stainless steel with castors
• Shell-and-tube heat exchanger with tubes of AISI 304 stainless steel and shell of borosilicate glass, exchange surface of 0.1 m2
• 2 variable area flowmeters of glass and steel, with range of 100 to 1000 l/h
• 5 thermo-resistances Pt 100 with sheath of AISI 304 stainless steel
• 4 electronic temperature indicators
• Digital thermostat
• Insulated tank for hot water of AISI 304 stainless steel with capacity of 120 l,
• Electric heater, P = 6 kW
• Centrifugal pump of AISI 304 stainless steel for hot water
• Piping and valves of AISI 304 and AISI 316 stainless steel
• Switchboard IP55, complying with EC conformity mark, including plant synoptic and ELCB
• Emergency button
Besides being provided with all the characteristics, this model also includes the following additional items:
• 2 electronic magnetic induction flow transmitters of AISI 316 stainless steel, range of 0 to 1000 l/h, 4-20 mA output signal
• Interface for the connection with a PC included in the switchboard
• Data acquisition software for Windows
Besides being provided with all the characteristics, this model also includes the following additional items:
• 2 electronic magnetic induction flow transmitters of AISI 316 stainless steel, range of 0 to 1000 l/h, 4-20 mA output signal
• 2 pneumatic valves of AISI 316 stainless steel (Cv = 2.5) for flow control
• Microprocessor digital PID controller with serial card
• Supervision software for Windows: it enables to control ON-OFF signals, analog signals coming from PID controller, real-time trend and historical trend
