Tag: air conditioner

Cabinet Coolers Keep Working at Full Capacity After Six Years of Near Constant Operation

Published on by Neal RakerLeave a comment

I was digging through my old application files today and ran across an application that I worked on with our Indonesian distributor (PT Interwira Lancar Mandiri).  Our distributor had a customer who was in the business of manufacturing automotive radiators. The end customer contacted them with a problem relating to a failed motor drive which caused one of their two production lines to come to a stop.

The end customer had a Freon based air conditioner set on his panel, but the air conditioner began leaking water into the inside of the panel. The water got into the motor drive, shorted it out and caused the production line to go down. Not only was the production down for 1 month, but the motor drive cost them $20 k USD to replace by the time they purchased, had it shipped and got it installed.

The customer was extremely wary of what he was going to use for an air conditioner unit because there was no getting around keeping these motor drives cool. So, our distributor introduced the customer to EXAIR Cabinet Cooler and the customer purchased Model 4330 for his panel.  Our distributor was back in the customer’s plant on another issue some six years later when he saw the old EXAIR Cabinet Cooler system still on the motor drive panel, cranking out cold air. No maintenance had been performed on the Cabinet Cooler System in that time (as none was necessary) even though the environment was quite dirty. You can see from the photos below that the place had not been cleaned in a long time.

CC1

When we talk to customers about the EXAIR Cabinet Cooler Systems, one of their initial concerns is how long they last. Because there are no moving parts to wear out, the life span can easily be in the range of 20 years or more. You would have to purchase 4 Freon based units, pay to have them changed out and pay for them to be maintained 2 – 4 times per year, changing filters, replacing compressors, and re-filling coolant in that time.

Not only does the Cabinet Cooler last a long time, but when it is operating, it produces a positive pressure onto the panel which keeps dust and debris from getting inside your cabinet over time.

CC3

Neal Raker, Application Engineer
nealraker@exair.com

High Temperature Cabinet Cooler Keeps Laser Measurement System Cool on Steel Slab Production Line

Published on by Neal RakerLeave a comment

slab cutting

Large steel slabs are cast, sized and cut to length in order to ready them for various types of secondary processing such as rolling, forging, machining, etc. The measurement and cutting functions of the steel slab process are controlled by various lasers focused on different features of the slab to provide for non-contact measurement due to the extreme high temperature conditions that are present.

slab measurement with laser

The electronics that are used as part of the laser measuring equipment can withstand temperatures up to about 60°C (140°F). The areas in a steel slab casting line where the laser electronics are located will usually exceed this temperature quite easily.

One of our customers was utilizing a protective box for his equipment that had a Peltier type cooling system integrated within. The cooling system would work for only a short while as the cooler would become clogged with dust and debris from the operation. This condition would lead to overheating and failure of the measuring equipment.

The customer came to EXAIR for a solution. He wanted to keep his existing enclosure and simply add an EXAIR Cabinet Cooler System to the box to replace the function of the original cooling module. The Cabinet Cooler System would be able to deliver significant cooling power for the application and provide a positive pressure on the enclosure to keep dust and debris from getting inside. Best of all, the Cabinet Cooler System is not affected by debris accumulation on the outside of the cabinet.

After we made some calculations, we recommended that he use our High Temperature, NEMA 12 Cabinet Cooler Model HT4215 on the enclosure.

high-temp-cabinet-cooler

The end result is a cooling system that has high reliability and low maintenance concerns due to zero moving parts, low purchase price and which is not affected by dirt, dust and debris from the ambient environment. This is a common problem for both Peltier coolers and Freon based cooling systems as they rely on the principle of ambient airflow over a heat exchange surface which is exposed to the ambient environment. EXAIR Cabinet Cooler Systems are using filtered compressed air utility from the facility compressed air supply, which by comparison is many times cleaner and thus contributes to low maintenance aspect of our product.

If you are looking for a simple, low cost, ‘bolt on’ cooling solution for your high temperature application, give EXAIR a chance. We may very well have the solution you are looking for.

Neal Raker, Application Engineer
nealraker@exair.com

High Temperature, Dual Cabinet Cooler Systems Make the Grade for Extreme Duty Operation

Published on by Neal RakerLeave a comment

HTDCC

EXAIR Corporation and our products have a robust presence in many overseas places. I should know. I work directly with many of our overseas clients, especially in the Middle East region where just the ambient temperatures climb to 60°C (140°F). If you take that high heat ambient condition and throw in the fact that our customers are working in petrochemical, chemical, cement, glass and plastic industries, the conditions in these manufacturing plants can be torturous not only to personnel but also to the many cabinets which reside in these processes.

I am working presently with a customer in Saudi Arabia who specializes in production of specialty pipe products which combine glass-fiber, resin and sand to produce pipes which can withstand highly corrosive and/or abrasive applications. When you have these kinds of raw materials moving around a production environment, you not only have the issue of high heat conditions, but also the egress of these fine materials into various panels causes many pre-mature failures. As many of us know, housekeeping will usually take a back seat to production. So, the customer is looking for a solution that can keep their panels cool enough to operate and also provide a means to keep a positive pressure to keep these raw materials from migrating inside their panels.

The specific application we are starting with is a panel located very near to where the sand charge is dumped into a mixer to be combined with the resin. The cabinet size is 1200 mm (h) X 1200 mm (W) X 400 mm Depth. The temperatures in this area get up to 60°C and with his internal heat load, his cabinet is getting up to 51°C under present conditions. I asked the customer to fill out a Cabinet Cooler Sizing Guide for me so I could have all the data necessary to run heat load calculations for him. We performed the calculations and came up with 1,170 Btu/hr. that he needed in this case.

After determining the heat load, I evaluated our available HT Cabinet Cooler models and settled on one of the Dual Cabinet Cooler systems to provide them with trouble-free cooling. The specific model was HT4360-240 (NEMA 12, High Temperature, Dual Cabinet Cooler System with 240 VAC thermostat control).

Since this is a technology that the customer was not familiar with prior to our contact, he is exercising prudence and has installed one unit for the time being and is evaluating its performance. This is a fairly new installation. So far, the customer has been satisfied with the performance.

Cabinet Cooler Systems can withstand very demanding applications like the one above. With proper selection and guidance from our experienced Application Engineering staff, you can be assured of similar, good performance in your application as well.  Present us with your challenging application today!

Neal Raker, Application Engineer
nealraker@exair.com

Like a Donkey Between Two Haystacks

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90Day_Temp

Having been born and raised in the northern climates, for me 80 degrees is hot. So when temperatures soar into the 90’s I really struggle to cope. Bad news is that according to NOAA, we are in store for above average temperatures for the remainder of the summer!

High temperatures are not only uncomfortable for we humanoids, electronics suffer as well. The demand for panel cooling is extensive and my company, EXAIR, produces Cabinet Cooler systems. There in lies my dilemma. I would like to wish for the heat to go away but then that would be wishing ill for my company. I’m like a donkey trying to decide between two hay stacks.

So, I will stay in my air conditioned cubical and calculate cooling requirements for customers. I would welcome the opportunity to assist you with your panel cooling requirements. Give me a call at 1-800-903-9247

Joe Panfalone
Application Engineer
Phone (513) 671-3322
Fax (513) 671-3363
Web: http://www.exair.com
Twitter: http://www.twitter.com/exair_jp
Facebook: http://www.facebook.com/exair