I have tried to control humidity by means of a condensing dehumidifier but failed to succeed. Is there any chance that a desiccant dehumidifier can do the job?

Yes, there is. The operating conditions for condensing dehumidifiers are quite limited compared to desiccant dehumidifiers. The dryness achievable for condensing dehumidifiers relates to the temperature of the cooler. Since the desiccant dehumidifier does not rely on cooling, there is no theoretical limit to how dry the air can be made. This limitation means that condensing dehumidifiers loses their moisture removing capabilities in cold environments. A further description of this is given in the document ”adsorption vs condensing”.