Indoor Archives - Page 2 of 3

06 Mar

Pros and Cons of Anti-Freeze in Water Coils

in all, Condenser Coil, Hot Water Booster Coils, Hot Water Coils, Indoor, Limited Access, Sentry Guard, Uncategorized

Operating water coils that are prone to air temperatures below freezing normally need the use of anti-freeze. The most common is glycol. This has been used for over 40 years, and there are two common types, ethylene and propylene. Anti-freeze provides a safeguard if there are mechanical or electrical breakdowns that may cause fluid to sit in a coil with below freezing air going across...

27 Feb

Big Arena – Big Problems

by USA Coil

in Air Handlers, all, Fan Coil Units, Indoor, Limited Access, Uncategorized

Comments

The Mercedes Benz Superdome in New Orleans is world renowned. It’s the largest fixed domed structure in the world and has been the home of the New Orleans Saints and the Sugar Bowl for many years, as well as being a recipient of The NFL’s premier game; The Super Bowl. This incredible structure opened in 1975 and had been known for years as simply “the...

20 Feb

What Happens When a Coil is Loaded with Dirt?

by USA Coil

in all, Booster Coils, Condenser Coil, Evaporator Coils, Heat Exchangers, Hot Water Booster Coils, Hot Water Coils, Indoor

Comments

Finned tube coils are meant to have contact with the air flow, as more contact creates more heat transfer. Heat transfer is nothing more than heat exchanged from one medium to another, and the goal is to create maximum heat transfer efficiency. The downside to this process is the coil’s susceptibility to foreign materials becoming lodged in them. The following explores this problem in a...

13 Feb

Duct Booster Coils- Selection and Sizing

by USA Coil

in all, Booster Coils, Hot Water Booster Coils, Indoor, Limited Access, Uncategorized

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Many projects require downstream duct mounted coils to heat or cool air to its final desired temperature. Normally there are upstream coils that regulate the leaving air temperature to a design intermediate level. The duct coil takes the air from that intermediate level to its final desired temperature. Many systems can vary the air flow or water volume to achieve a desired leaving air temperature...

06 Feb

The Effects of Coil Selection with Outside Air Loads

by USA Coil

in Air Handlers, all, Central Station Units, Condenser Coil, Evaporator Coils, Fan Coil Units, Heat Exchangers, Hot Water Booster Coils, Hot Water Coils, Indoor, Limited Access, Sectional Coils, Uncategorized

Comments

HVAC and process heating/cooling must deal with the added tonnage created by using fresh air from outside. Most times, the requirement for fresh air is mandatory and can go from 10% all the way to 100 % of the system air flow. There are numerous rules and regulations written to eliminate air flow quality problems, including bacteria and other micro-organisms, that can cause health problems....

30 Jan

Florida Freeze Warning

by USA Coil

in all, Indoor, Limited Access, Sentry Guard, Uncategorized

Comments

Florida is known for its beautiful beaches, great weather, pristine communities, and senior traffic heading to the “Early Bird Specials”. For many, it’s considered to be paradise! The state has continued to grow every year since 1950, and its continued growth seems assured. During the winter months in the northern and central portions of the state, old man winter still comes knocking from time to time...

23 Jan

Why Cooling Coils Need to be Replaced

by USA Coil

in all, Corrosion, Indoor, Limited Access, Uncategorized

Comments

In a perfect world, most cooling coils should operate efficiently for twenty years or more. Lack of proper maintenance, inappropriate applications, corrosion, and less-than-stellar modern-day construction all affect the life expectancy of cooling coils. There are three major reasons for premature cooling coil replacement as follows: Increased air resistance due to the plugging of the coil surface. What causes this plugging? There is an increase...

09 Jan

Water Cooling and Heating Coils

by USA Coil

in all, Hot Water Booster Coils, Hot Water Coils, Indoor, Limited Access

Comments

Water Cooling and Heating Coils Water is the most widely used heat transfer medium because it’s readily available and low in cost. Water can be used as a heat transfer medium if the temperature range is between 15 degrees Fahrenheit (when mixed with glycol) when cooling and a high of 210 degrees Fahrenheit when heating. Chilled Water Coils When maintaining an acceptable living or working condition in...

02 Jan

Common Problems with Fan Coil Units in Residences

by USA Coil

in all, Fan Coil Units, Indoor, Limited Access, Uncategorized

Comments

Many fan coil unit installations are in condos, apartments, townhouses, hotels, and other types of lodging. Most systems are two or four pipe heating/cooling systems and usually use chilled water for cooling and hot water for heating. These units can be permanent or temporary residences occupied by an owner, tenant, or paying customer, which may mean they are more demanding. There are 3 types of units...

17 Dec

How to Get Your Replacement Coils Delivered on Time

by USA Coil

in all, Indoor, Limited Access, Shipping

Comments

Replacement coils are different than most parts of an air conditioning or heating system. Replacement coils are not in stock and will need to be fabricated. You can select thermostats, valves, fan parts, and even compressors in stock, but rarely an HVAC coil. Today, there are a lot of alternatives available to replace coils, but how many have a successful history and a precise system to...