Why doesn't ORAIN dehumidify enough?

This is a model w ithout a Peltier compressor. A Peltier dehumidifier consumes little but is of low power. Its maximum dehumidification is 750mL/day with a humidity of 90% and a temperature of 28/30°C. If the room temperature is lower than 20°C, the device loses capacity. It is suitable for small spaces and small humidity problems. It will wonderfully replace Rubson type absorption cartridges.