Case Study: PRESTO W92tt Process system

Cooling a Büchiglas 100 l reactor from +20 °C to lowest possible temperature with a PRESTO W92tt Process system


This case study tests the lowest temperature of the JULABO PRESTO W92tt Process system with a 100 l glass reactor. The PRESTO W92tt is connected to the reactor via two 3 m metal hoses. The PRESTO W92tt Process system cools from +20 °C to -91 °C maximum low temperature.


Test Conditions

Product PRESTO W92tt Process system
Cooling capacity (Ethanol)
°C 200 100 20 0 -20 -30 -40 -60 -80
kW 29 29 25 18 11 10.5 10 7 1.5
Heating capacity kW
Pump pressure 0.5 bar
Duration 8:10 hr:min
Test volume 70 l
Setpoint 1 +20 °C
Setpoint 2 -90 °C
Reactor 100l Büchiglas (glass)
Tubing length 3 m
Fluid in unit Thermal HL80
Fluid in reactor Thermal HL80


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

Test Results

The PRESTO W92tt Process system cools the reactor from +20 °C to the lowest temperature of -91 °C in 8:10 h.

Set point
Temperature in the application
Temperature in temperature control unit