Improving Your Air Conditioner

What's The Difference Between Dessicant And Cooling Dehumidification?

If you need to purchase an industrial dehumidifier for your commercial site, it's important to understand the difference between two of the most common types of dehumidifiers: desiccant and cooling. Once you know how each type of dehumidifier works, you can make a more informed decision as you choose which type of dehumidifier is right for you.

What's the difference between desiccant and cooling dehumidification?

Cooling and desiccant dehumidification systems work in different ways. Desiccant dehumidifiers work by drawing air through a fan and passing the air through a desiccant material. Once the air has been dried by the desiccant, it leaves the dehumidifier in a state that is dry and also warm. Desiccant dehumidifiers are generally powered by thermal energy (meaning steam or gas).

Cooling dehumidifiers work by lowering the temperature of coils in a condenser and passing air over the coils. This causes moisture to gather on the coils. When enough moisture gathers on the coils, it collects into water droplets and drops onto a condenser pan. Cooling dehumidifiers are generally powered by electricity.

What is the advantage of desiccant dehumidification?

Desiccant dehumidification is generally the most efficient system in climates that are naturally cool. This is because cold climates require cooling dehumidification systems to dramatically lower the temperature of their coils in order to produce condensation. Since a desiccant system doesn't require any cooling, it's easier to run a desiccant dehumidifier in a cold-air climate.

What is the advantage of cooling dehumidification?

Cooling dehumidification works better in climates that are somewhat warmer, where the coils don't need to be brought down to a very cool temperature in order to produce condensation.

How can you tell which dehumidifier is right for you?

When considering whether or not to get a desiccant system, you must first consider the climate where the dehumidifier will be located. If your warehouse has limited climate control and a great deal of your year has mild to cool weather, a desiccant system may be for you. To make the final determination, compare the cost of electricity to the cost of thermal energy. If thermal energy is cheaper than your electricity costs, a desiccant system is probably ideal for your circumstances.

Conversely, cooling dehumidification is right for you if your warehouse spends much of the year in warmer weather, and if electricity is less expensive than thermal energy in your area.

In many areas, the type of system that you should choose for your industrial dehumidifier needs will not be so cut and dry. For example, if your industrial site is located in an area where electricity is cheaper than thermal energy but the climate is cool, it may not be very clear which type of dehumidification is best for you. In a case like this, contact your industrial dehumidifier company to find out which type of dehumidification system is right for your needs.