Uses for Spiral-Wrapped vs. Industrial Plate Fin Heat Exchangers

Posted by Super Radiator Coils on Dec 1, 2020 8:24:42 AM

In the heat transfer universe, the term ‘coil’ is typically used to describe lighter duty heat exchangers used for various HVAC-R functions across a slew of industries. However, when the pressures, temperatures, and all-around harshness of an application and installation environment are ratcheted up, this equipment commonly falls under the ‘industrial heat exchanger’ umbrella.

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3 Advantages of TIG Welding in Manufacturing

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

Factors That Limit a Coil's Thermal Capacity

Posted by Brian Elliott, P.E. on Oct 27, 2020 11:48:48 AM

My parents were fond of saying, “There is only so much meat on the bone.” No matter how hungry we children were, there was a limit as to what meat we could get from gnawing a bone. The same is true for coils. No matter how hard we wish for more, a coil can only transfer a limited amount of heat. Why is that?

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R-32: Pros, Cons, & Comparisons to Other Refrigerants

Posted by Super Radiator Coils on Oct 20, 2020 8:40:36 AM

The ongoing phaseouts of various refrigerant classes and the refrigerants that comprise them have created a need for replacements that balance efficiency with reduced environmental impact. Of these “next generation” refrigerants, difluoromethane is a popular option for residential and commercial systems, especially in Asia.

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In What Situations Would I Even Consider Retrofitting an R-22 System for R-410A?

Posted by Al Nord on Oct 12, 2020 12:00:14 PM

Today, most new air conditioning system components that would have used R-22 prior to its regulation are now designed to operate with R-410A. However, R-22 systems, such as commercial split systems for example, still exist. This means that when a coil reaches the end of its service life, the system engineer has a decision to make: replace the system or convert the existing equipment to operate on R-410A.

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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

Ethylene Glycol vs. Propylene Glycol: Differences & Uses

Posted by Will Klick, P.E. 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

Brazing Defects: Flux Entrapment Overview and Causes

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

Features of Evaporators Used for Vegetable Cold Storage

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

Alternatives to Copper & Aluminum for 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

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