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

What is a refrigerant distributor and what does it do?

Posted by Ken Allen on Oct 5, 2020 12:17:44 PM

In a refrigeration circuit, the evaporator coil plays a critical role. Part of its responsibility is creating the controlled pressure drop necessary for the refrigerant to change phase, the bulk of which occurs via the system’s metering device, such as a thermostatic expansion valve (TXV).

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Topics: Refrigerated Display Case, Computer & Electronics Cooling, HVAC, Coils, Efficiency, Expertise, Refrigerants

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

What is flux entrapment and how does it happen?

Posted by Super Radiator Coils on Sep 15, 2020 9:01:47 AM

There are terrific braze joints, awful braze joints, and everything in between. Today, we’ll examine one type of defect that can have devastating effects on joint integrity – flux entrapment.

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Topics: Coils, Heat Exchangers, Expertise, Quality

Other than copper and aluminum, what materials are used to build heat exchangers?

Posted by Super Radiator Coils on Sep 8, 2020 8:27:34 AM

In many of the industries we serve, heat exchangers made with copper tubes and aluminum fin are extremely popular, and very often, these materials are a terrific choice. But copper and aluminum aren’t suited for everything. At Super Radiator Coils, the needs of many of our customers often dictate that we explore and understand alternative materials.

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Topics: Gas Compression, Military, Power Generation, Coils, Heat Exchangers, Nuclear Products, Expertise, Quality, Engineering, Turbine Inlet Air Cooling and Heating

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

R-410A vs R-407C in high-ambient environments: how are they different?

Posted by Ken Allen on Jun 19, 2020 9:49:05 AM

There are dozens of commercially available refrigerant options on the market today, including numerous refrigerant blends, which aim to replicate the effectiveness of former workhorses like R22, the production of which was made illegal as of January of this year. Two popular examples of refrigerants developed in the last 30 years or so that are used in the HVAC industry are R-410A and R-407C. These two refrigerants are often used for similar applications, but they have some marked differences that should be understood and considered when deciding between them.

Want to learn more about some of today's popular refrigerants? Check out the brand new, free SRC Refrigerant Guide!

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Topics: HVAC, Coils, Efficiency, Expertise, Refrigerants

What is the latent load in a cooling system and why does it matter?

Posted by Louis Rogerson on Jun 19, 2020 9:35:51 AM

Systems designed to cool air, whether for HVAC, industrial facilities, or manufacturing operations all have to address it. Failure to address it can lead to botched processes, reduced production, ruined equipment or uncomfortable building occupants. It can be expressed in percentage, lb./lb., wet bulb temperature, or other metrics. The silent “it” is humidity. Put simply, humidity is a measure of the amount of water vapor in the air, and while overlooking this simple measure can be costly, it can also be readily addressed during system design.

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Topics: Coils, Efficiency, Expertise, Engineering

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

Frost frustration: studying fouling in gas turbine inlet filter houses

Posted by Louis Rogerson on Jun 8, 2020 10:57:32 AM

An 800MW 2x1 combined-cycle power plant in Alberta, Canada was experiencing consistent frost issues on anti-icing coils in their gas turbine inlet filter houses. The purpose behind these coils is to bring the temperature of the air up to just above the dew point, to prevent the condensation of water (which can cause serious damage through icing if introduced into the turbine.)

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Topics: Power Generation, Expertise, Engineering, Turbine Inlet Air Cooling and Heating

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