Image Credit: APC | EIC Solutions | Schneider Electric   Enclosure air conditioners remove the heat generated by electronic devices from the inside of cabinets or enclosures. Powerful electronic assemblies and components function within increasingly high temperatures. The heat generated is a hazard for production and functional machinery. Enclosure air conditioners are critical for the safety of production and personnel in the event of component failure. The...
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Q & A on Enclosure Air Conditioners

We asked our users for their input on Enclosure Air Conditioners. Here are the results of 84 users familiar with Enclosure Air Conditioners.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing enclosure air conditioner design?
12 answers
Answers:
Development of special coolant agents (less toxic, high environmental temperatures).
~Willi H, Project Manager, Eisenberg, Germany
Drip free technology. Proper air distribution to remove hot spots.
~Rohinton P, Manufacturer, Baroda, India
Rising server room ambient temperature. Layout of chassis and its cards in the enclosure...
~Kok-Fah C, Research & Development, Singapore, Singapore
Increased heat dissipation of contained devices (i.e. items to be cooled).
~Russell D, Engineering Manager, Johannesburg, South Africa
Mixing the conditioned air with the ambient air for better comfort.
~Gedalyahu M, Research & Development, Haifa, Israel
Desiccant cooling is alternative technology.
~Research & Development, Fouka, Algeria
Automatic fire protection system designs.
~Med W, Technical Support, Shrewsbury, UK
Water cooled drives Peltier coolers
~Marketing/Sales, Norcross, GA
Stand Air Conditioners.
~Paulus Asamoah, General Management, Hannover, Germany
Nano technology
~Esref Uslu, Technical Support, Istanbul, Türkiye
New coolants
~Lenny F, Engineer, Cumming, GA
Efficiency
~John S, Engineering Consultant, Fort Wayne, IN

Q:
From your perspective, which companies are creating the most innovative enclosure air conditioners?
11 answers
Answers:
Rittal, Nexflo Kooltronic, Ferret etc..
~Rohinton P, Manufacturer, Baroda, India
Stratus Thermal Edge
~Lenny F, Engineer, Cumming, GA
For military applications: small, flexible specific companies For COTS products: automotive industry
~Willi H, Project Manager, Eisenberg, Germany
Siemens and Panasonic.
~Paulus Asamoah, General Management, Hannover, Germany
Pfannenberg, Rittal
~Med W, Technical Support, Shrewsbury, UK
Carrier company
~Engineering, Process/Production, Ordu, Turkey
Engineered air
~John S, Engineering Consultant, Fort Wayne, IN
AirGreen Ltd.
~Gedalyahu M, Research & Development, Haifa, Israel
Pfannenberg
~Marketing/Sales, Norcross, GA
Phannenberg
~Phil C, Design Engineer, Noblesville, IN
Rittal
~Esref Uslu, Technical Support, Istanbul, Türkiye

Applications and UseTop

Q:
What are some of the applications you have used an enclosure air conditioner for?
16 answers
Answers:
ARINC enclosures, Military mobile computer systems, 19" racks on ships and submarines, air conditioners, ...
~Willi H, Project Manager, Eisenberg, Germany
Keeping industrial equipment such as PLCs and Drives in an acceptable cool and clean control cabinet.
~Lenny F, Engineer, Cumming, GA
Fire protection enclosures in Kuwait. General control enclosures within production facilities.
~Med W, Technical Support, Shrewsbury, UK
Industrial control systems, personal entertainment enclosures.
~Technical Support/Services, Houston, TX
Cooling for electrical control panel
~Rohinton P, Manufacturer, Baroda, India
Air conditioning of a food processing factory.
~Engineering, Process/Production, Ordu, Turkey
Have not, but Fire alarm equipment applications.
~Engineering, Design, Altamonte Springs, FL
For offices and residence houses.
~Paulus Asamoah, General Management, Hannover, Germany
VFD panels Control Panels
~Engineering, Consulting, Vadodara, India
Electrical room cooling
~John S, Engineering Consultant, Fort Wayne, IN
For example at home
~Research & Development, Fouka, Algeria
VFD drive cabinets
~Marketing/Sales, Norcross, GA
Desktop computers
~Russell D, Engineering Manager, Johannesburg, South Africa
Electrical panels
~Phil C, Design Engineer, Noblesville, IN
Server rack
~Kok-Fah C, Research & Development, Singapore, Singapore
Enclosure
~Esref Uslu, Technical Support, Istanbul, Türkiye

Q:
Please share with us any “non-standard” applications that an enclosure air conditioner has been used for.
8 answers
Answers:
Making a "lagering" cabinet for home brewing beer.
~Lenny F, Engineer, Cumming, GA
Not that I know at present, since enclosure ACs are expensive. I have come across the other way. People use window/room air-conditioners to cool enclosure.
~Rohinton P, Manufacturer, Baroda, India
A 350Watts cooling requirement only within an automatic "Inergen" scheme to protect the extinguishing media against over heating and thus over pressure with inherent risk of explosion. This was a Petro Chemical application in the Middle East; up to 50 deg C.
~Med W, Technical Support, Shrewsbury, UK
Mixing the air with special design of the diffusers.
~Gedalyahu M, Research & Development, Haifa, Israel
What does "non-standard" mean? Almost every time we have to adapt to "non-standard" parameters (environment, weight, size limitations, ...).
~Willi H, Project Manager, Eisenberg, Germany
Cooling drives cabinets in the desert
~Marketing/Sales, Norcross, GA
High temp ambient operation.
~Phil C, Design Engineer, Noblesville, IN
For Private and Offices.
~Paulus Asamoah, General Management, Hannover, Germany

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of an enclosure air conditioner?
6 answers
Answers:
Breaking walls before installment can be changed.
~Paulus Asamoah, General Management, Hannover, Germany
No - besides frequent failures due to insufficient air flow.
~Willi H, Project Manager, Eisenberg, Germany
Undersizing always becomes a disaster.
~Marketing/Sales, Norcross, GA
Yes. VFD burnt out. The reason being electrical enclosure installed in room which was air conditioned the a/c capacity installed was much less resulting into heating enclosure. As if this was not enough, aa exhaust duct was provided from top of enclosure to exhaust air from room keeping the enclosure door open.
~Rohinton P, Manufacturer, Baroda, India
Not due to usage, but due to the preparatory work done to the enclosure wall pending receipt of the products where the opening and product differed in sizes.
~Med W, Technical Support, Shrewsbury, UK
About 1 day to stop the automotive press line in a manufacturing facility
~Esref Uslu, Technical Support, Istanbul, Türkiye

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
10 answers
Answers:
Reverse cycle heating feature. Remote monitoring via integration with building management system.
~Med W, Technical Support, Shrewsbury, UK
To make the make-up air dampers larger as most units are starving themselves for air.
~John S, Engineering Consultant, Fort Wayne, IN
Non-toxic cooling agents; operation up to 75 °C environment;
~Willi H, Project Manager, Eisenberg, Germany
Easy to install, drip proof (no condensation of water) compact, durable, easy to service.
~Rohinton P, Manufacturer, Baroda, India
Filterless design built-in condensate evaporators
~Marketing/Sales, Norcross, GA
Thermocouple, digital screen, integral evaporating
~Esref Uslu, Technical Support, Istanbul, Türkiye
Compactness with reasonable cooling capacity.
~Kok-Fah C, Research & Development, Singapore, Singapore
Long life, low maintenance, cost effective.
~Russell D, Engineering Manager, Johannesburg, South Africa
Cheap ones for African Continent.
~Paulus Asamoah, General Management, Hannover, Germany
Ethernet capabilities.
~Lenny F, Engineer, Cumming, GA

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of an enclosure air conditioner?
10 answers
Answers:
Some enclosures have so many components installed that there is no space for proper air circulation. Get proper heat load calculation done before selecting its capacity, keeping in mind any other future addition of power drives, VFD etc... Many enclosure suppliers have installed factory AC. Do proper frequent servicing. Keep 100% standby for critical operation. Instruct supplier for proper voltage and frequency in your country. Most important the ambient temperature.
~Rohinton P, Manufacturer, Baroda, India
The actual "rated" BTU of any company's air conditioner is not that exact, so do not get mired down in the exact details. If your calculations show you need a 3500 BTU unit do not be afraid to go to a 4000 or even 5000 unit since the ambient environment may change drastically.
~Lenny F, Engineer, Cumming, GA
Reserve enough space for air flow inside your enclosure - otherwise you are far away from desired efficiency. Be careful with high relative humidity environment.
~Willi H, Project Manager, Eisenberg, Germany
If pre-cutting the opening is required to fit a product, ensure that you use signed production drawings as the "glossy" literature frequently come with disclaimers as to their accuracy.
~Med W, Technical Support, Shrewsbury, UK
Start with an enclosure supplier that has a good range of enclosure air conditioner.
~Kok-Fah C, Research & Development, Singapore, Singapore
Temperature differential when dealing with high ambient temperatures.
~Marketing/Sales, Norcross, GA
Tamper with air conditioning as little as possible.
~Esref Uslu, Technical Support, Istanbul, Türkiye
Too large units will cause volume problems.
~John S, Engineering Consultant, Fort Wayne, IN
Use the size calculator
~Phil C, Design Engineer, Noblesville, IN
Good quality.
~Paulus Asamoah, General Management, Hannover, Germany

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using an enclosure air conditioner?
11 answers
Answers:
Keep 100% standby for critical operation. Instruct supplier for proper voltage and frequency in your country. Most important is the ambient temperature. Do proper frequent servicing. Do not try to use room or window or split AC as they cannot perform with high sensible load.
~Rohinton P, Manufacturer, Baroda, India
After deciding on the needed BTU's, compare the performance curves of the different manufacturers for your considered air conditioner and remember that it is always better to go bit bigger.
~Lenny F, Engineer, Cumming, GA
Buy quality from renowned manufacturers, as the implications of not adequately protecting the items within the enclosure can be disastrous and very very costly to rectify.
~Med W, Technical Support, Shrewsbury, UK
Thermal and cooling capacity are not only issues. There are packaging, integration and other issues that have to work in tandem.
~Kok-Fah C, Research & Development, Singapore, Singapore
Don't look for price only! Compare technical data (for example specification "35°C / 50 °C" against "35 °C / 35 °C" !!!
~Willi H, Project Manager, Eisenberg, Germany
Try to avoid needing them in the first place. Rather opt for an air conditioned room, as it is far more cost effective.
~Russell D, Engineering Manager, Johannesburg, South Africa
Wait for the new diffusers to be on the market.
~Gedalyahu M, Research & Development, Haifa, Israel
Yes, get air conditioning for the purpose.
~Esref Uslu, Technical Support, Istanbul, Türkiye
Check make-up air volumes.
~John S, Engineering Consultant, Fort Wayne, IN
Sizing is most important.
~Marketing/Sales, Norcross, GA
Use the size calculator.
~Phil C, Design Engineer, Noblesville, IN


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