Q & A: DeltaStream Evaporative Cooling

People often see the Moffitt DeltaStream evaporative cooling air conditioning unit and think it’s just another swamp cooler. That couldn’t be further from the truth. With its state-of-the-art engineering and advanced hygiene features it is leaps and bounds beyond the traditional evaporative cooling unit. See our Q&A below to learn more about the Moffitt DeltaStream.

Q: What is the DeltaStream?

A: The Moffitt DeltaStream is an adiabatic cooling system designed to cool outdoor supply air for commercial or industrial spaces. It is a highly efficient and extremely effective way to lower temperatures in a building.


Q: What is the Science behind Natural Cooling?

A: In a natural cooling system hot external air is pulled in through a fan and drawn over a desorption medium. This medium a continuous water supply system keeps the medium moist and cools down the warm air as it passes through. The water evaporates and energy is removed from the air, which results in a reduction in the supply air temperature. The lower temperature air is then blown or ducted into the building to create a cooler space. This is often known as adiabatic cooling and has similarities to evaporative cooling.


Q: Is the DeltaStream the same thing as a swamp cooler?

A: Not really. The DeltaStream uses adiabatic cooling while a swamp cooler uses evaporative cooling. They are similar but also quite a bit different. The DeltaStream has an advanced control system that provides the users with greater control and / or building automation integration. Additionally, each DeltaStream unit has self-cleaning hygiene features that set it apart from the low-tech swamp cooler. We like to say that the DeltaStream is the evaporative cooler that swamp coolers wish they were.


Q: Is the DeltaStream the same thing as air conditioning?

A: No, the DeltaStream is not an air conditioner. It uses water and adiabatic cooling to provide 100% cool, fresh outside air ventilation without chemicals. Of course, it does not have the same impact as air conditioning either. A DeltaStream will never make a space as cool as air conditioning will, nor can you set it to whatever temperature you want. That said, it is significantly more affordable in places like factories, warehouses, or shopping centers where air conditioning would be incredibly expensive.


Q: What are the Operating Costs of the DeltaStream?

A: The DeltaStream requires only minimal electricity. In fact, it is up to seven times more efficient than conventional air conditioning. Furthermore, while it does use water, it adds up to such a small amount that you’d hardly even notice.


Q: Is the DeltaStream Environmentally Safe?

A: The DeltaStream is an environmentally safe, natural cooling option. It uses no refrigerants such as CFCs. It also uses highly efficient EC fans to reduce energy consumption. Overall, the DeltaStream is reliable and requires minimal maintenance.


Q: Am I Going to Experience a Mold Issue?

A: The DeltaStream was designed with this in mind within the industrial and commercial environment. The unit is self-cleaning. The first step is for the water to drain from the unit. The fan then continues to operate, letting the unit dry completely. This prevents the growth of any bacteria or fungus. As an add-on, there’s an optional UV light sterilizer. This UV light is used to kill any bacteria or fungus that may have the opportunity to enter. These help prevent mold and bacteria issues.


Q: What about Legionnaire’s Disease?

A: Legionellosis is not a concern with the DeltaStream unit. The water in the DeltaStream is continuously moving and constantly refreshing. This prevents the stagnant water environment in which the Legionella bacteria can grow. Additionally, the self-cleaning features, mentioned above, prevent the growth of mold or bacteria.


Q: Can I install just one DeltaStream unit?

A: Yes. In instances where one DeltaStream unit provides sufficient cooling for the space, one unit should be fine. However, you will want to talk to an adiabatic system designer to ensure that one is enough. Like air conditioning the capacity of the unit needs to be calculated in accordance with the size of the room and building. In a large space a single unit will not have enough power for the cooling impact to be felt. Moffitt can help you determine can help you determine the quantity of DeltaStream units required for your space.


Q: What kind of service does the DeltaStream require?

A: Moffitt encourages semi-annual service visits to make sure the DeltaStream units are working as designed. The Moffitt team can write a complete service plan for your facility during the bidding or installation process. Constant monitoring through the automated building control system also allows you, and Moffitt if you so choose, to see any issues as they pop up. The users can then adjust fan speeds, humidity levels, etc., to make sure the DeltaStream is working at optimal functionality. Moffitt can make these observations and adjustments remotely.


The Moffitt DeltaStream evaporative cooling unit

Moffitt has designed the DeltaStream evaporative cooling unit to make-up for the shortcomings that accompany traditional cooling units. Our eye for innovation allowed us to apply the DeltaStream in various applications and test its effectiveness more than anything else. When working with us, we’re your premier turn-key service company with the design, manufacturing, and installation amenities all encompassed into one. Call us today to learn more about the commercial ventilation and capabilities of the DeltaStream in your building.

DeltaStream adiabatic natural cooling unit
