Desiccant Dehumidification
The Dehumidification Handbook - 3rd Edition (2019)
The 2019 update of this classic reference book added more current and extensive climatic design data to the appendix, and also updated the design of the book cover. Otherwise the information and graphics remain the same as in the landmark 2nd edition, first published in 1990.
The fact that “The DH Handbook” has remained useful for over 30 years speaks to the quality of the information and the clarity of its presentation. The link below allows access to the complete PDF of the 3rd edition.
When distributing this PDF, or using it’s contents in presentaions and educational materials, it would be appropriate to reference the title of the book and its publisher the Munters Corporation, to honor the fact that the company has developed and maintained the information for the benefit of the public since 1990.
Case History - Humidity Control For Computer Chip fabrication
At a control condition of 35% RH, both desiccant and low-temp chilled water can provide the dehumidification needed to remove the humidity load from the ventilation air. In this case, the design engineer did not believe the manufacturer’s engineering weather data for the local climate, which he perceived as “dry.”
Although the Phoenix, AZ area is “dry”when measured by the relative humidity, the outdoor air dew point temperature is quite unexpectedly high during three months of the year. So the chilled water system did not have the capacity to remove the ventilation humidity load.
This case history shows the magnitude of the ventilation humidity load in the Phoenix area, and the improved certainty that desiccant dehumidification provided to control humidity for a critical computer chip manufacturing process.
Case History - Preventing Metallic corrosion during storage
Desiccant dehumidifiers have been used since the end of WW II to protect military equipment in storage. This paper describes two examples of civilian uses for the technology: high-value steel storage warehouses.