TIG welding in manufacturing: advantages and tradeoffs

Posted by Ben Smith, CWI on Nov 11, 2020 9:36:34 AM

Gas-tungsten arc welding (GTAW), or more commonly, Tungsten Inert Gas welding (TIG), is a method of arc welding named for the non-consumable tungsten electrode used during the process. TIG welding isn’t the best option in some industries, but as coil manufacturers, it makes sense for us.

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Topics: Gas Compression, Military, Food Storage & Processing, Power Generation, Heat Exchangers, Nuclear Products, Expertise, Quality, Reliability, Engineering, Turbine Inlet Air Cooling and Heating

How are ethylene glycol and propylene glycol different and which should I use?

Posted by Will Klick on Sep 28, 2020 3:35:57 PM

For low-temperature hydronic systems, systems in which chillers and AHUs are located outdoors, or other equipment used in low-temperature processes, some form of glycol is a critical ingredient. It works to lower the fluid’s freezing temperature, enabling lower-temperature operation and preventing freezing.

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Topics: Food Storage & Processing, Ground Support, Coils, Heat Exchangers, Efficiency, Expertise, Reliability, Engineering

Design considerations for evaporators used in the storage of potatoes, onions and other crops

Posted by Super Radiator Coils on Sep 9, 2020 11:35:08 AM

This article has been updated. It is accurate as of 9/23/20.

Heat exchangers used for different applications need different design features. For example, in industries like pulp and paper, lower fins per inch (FPI) are often included to reduce airside fouling and to make for easier cleaning. Other applications such as the military are often concerned with weight, which impacts material selection. For this post, we're going to focus on some unique design choices we often include when building heat exchangers for the refrigerated storage of potatoes, onions, beets and other vegetables.

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Topics: Food Storage & Processing, Coils, Heat Exchangers, Quality, Reliability

Transcritical CO2 refrigeration: basics and benefits

Posted by Ken Allen on Jun 23, 2020 12:18:42 PM

Around 2010, the first refrigeration systems operating on transcritical (TC) CO2 (R744) – commonly called booster systems – began cropping up in North American supermarkets. Since then, usage of TC CO2 systems has grown steadily and they’ve become viable options for places like supermarkets, food warehouses, and ice rinks, as more organizations move away from traditional HFC refrigerants. Natural refrigerant market accelerator Shecco estimates that TC CO2 systems grew from 140 in 2008 (all in Europe) to more than 35,000 systems worldwide today.

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Topics: Food Storage & Processing, HVAC, Expertise, Engineering, Refrigerants

I'm sick of replacing corroded coils. Should I consider all stainless?

Posted by Louis Rogerson on Jun 8, 2020 11:33:29 AM

Oftentimes, using stainless steel components seems like a simple solution to corrosion on coils. You may see fins or tubes or other parts of the system show signs of corrosion, and it seems that the best option is to change the coil to stainless steel, solving the corrosion problem permanently. While this seems like a simple solution to a significant problem in the HVAC, industrial, and commercial systems where coils are found, the answer to the question “should I make an all-stainless coil?” is far more complex.

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Topics: Gas Compression, Refrigerated Display Case, Food Storage & Processing, Power Generation, Heat Exchangers, Expertise, Engineering

Fin enhancements for plate fin heat exchangers: purposes and tradeoffs

Posted by Super Radiator Coils on Jun 8, 2020 11:11:15 AM

In plate fin heat exchangers, the fins themselves play a critical role. They provide the extended surface area needed to achieve effective heat transfer between a gas on the finside and a fluid on the tubeside.

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Topics: Gas Compression, Refrigerated Display Case, Food Storage & Processing, Ground Support, Computer & Electronics Cooling, Power Generation, HVAC, Coils, Efficiency, Engineering

Corrosion-resistant coil components: what’s the right choice?

Posted by Ken Allen on Jun 8, 2020 10:41:09 AM

This article has been updated. It is accurate as of 9/23/20.

For commercial operations that rely on effective heat transfer, external corrosion of heat exchanger components is a major concern. When left unchecked, corrosion can significantly reduce a coil's effectiveness, but sometimes it’s difficult to know which anti-corrosion option best meets your needs.

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Topics: Refrigerated Display Case, Food Storage & Processing, HVAC, Efficiency, Reliability, Engineering

Surface treatment of stainless steel: pickling, descaling, passivation

Posted by Super Radiator Coils on Apr 22, 2020 3:49:44 PM

We get asked a lot of questions about the passivation of stainless steel welds. Oftentimes, customers want to know what passivation is. Others ask if it’s necessary. Given the number of factors that such a decision hinges on, Super Radiator wants customers to understand the benefits of passivation, and also understand what’s involved in the larger process of treating stainless steel surfaces.  

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Topics: Food Storage & Processing, Power Generation, Heat Exchangers, Nuclear Products, Quality, Engineering

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