Case Study: PRESTO W50t Process system

Cooling a Büchiglas 50 l reactor from +20 °C to lowest possible temperature with a PRESTO W50t Process system


This case study tests the lowest temperature of the JULABO PRESTO W50t Process system with a 50 l glass reactor. The PRESTO W50t is connected to the reactor via two 2 m metal hoses. The PRESTO W50t Process system cools from +20 °C to -39.30 °C maximum low temperature.


Test Conditions

Product PRESTO W50t Process system
Cooling capacity (Ethanol)
°C 200 20 0 -10 -20 -30 -40
kW 7 7.5 6.5 4.5 2.8 1.6 0.6
Heating capacity 12 kW
Pump pressure 0.5 bar
Duration 3:40 hr:min
Test volume 37.5 l
Setpoint 1 +20 °C
Setpoint 2 -50 °C
Reactor 50l Büchiglas (glass)
Tubing length 2 m
Fluid in unit Thermal HL60
Fluid in reactor Thermal HL60


Room temperature 20 °C
Humidity 45 %
Voltage version 400V/3PNPE/50Hz

Control Parameters

XP 0.19 K
TN 695 s
TV 85 s
XPU 15 K

Test Results

The PRESTO W50t Process system cools the reactor from +20 °C to the lowest temperature of -39.30 °C in 3:40 h.

Set point
Temperature in the application
Temperature in temperature control unit