Case Study: PRESTO W55 Process system

Cooling a Büchiglas 100 l reactor from +20 °C to lowest possible temperature with a PRESTO W55 Process system


This case study tests the lowest temperature of the JULABO PRESTO W55 Process system with a 100 l glass reactor. The PRESTO W55 is connected to the reactor via two 2 m metal hoses. The PRESTO W55 Process system cools from +20 °C to -46.5 °C maximum low temperature.

Test Conditions

Product PRESTO W55 Process system
Cooling capacity (Ethanol)
°C 20 0 -10 -20 -30 -40 -50
kW 14.9 11.4 7.3 4.6 2.7 1.3 0.4
Heating capacity 15 kW
Pump pressure 0.5 bar
Duration 6:45 hr:min
Test volume 75 l
Setpoint 1 +20 °C
Setpoint 2 -50 °C
Reactor 100l 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 W55 Process system cools the reactor from +20 °C to the lowest temperature of -46.5 °C in 6:45 h.

Set point
Temperature in the application
Temperature in temperature control unit