A salt laden atmosphere can cause enormous damage to any heat exchanger coil over time. That time frame can be variable based on the severity of the atmosphere and the construction of the coil. There are many people who love to live/work by the ocean, but salt corrosion is a real negative that must be dealt with, as it can … Read More
There are many reasons why hot water coils in your system can under-perform, and some are built in at the time of the design, and many can also occur after the coils have been installed. Here are my Top Ten. 10. Air stratification issues – This means the air flow across the surface of the coil is not being evenly … Read More
After decades in the coil replacement business, Southwest Coil knows that most coils are replaced well before they reach old age. In fact, about 75% of them need replacement well before their time. There are 3 major reasons – 1) adverse temperature, 2) adverse pressure, and 3) corrosion. Also, the original design could have been marginal for the application, systematic … Read More
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 … Read More
What is the least expensive arrangement for a fan coil unit? a. Plenum Unitb. Basic Unitc. Flush Unitd. Cabinet Style The answer is simple, because the name is part of one of the above answers. The answer is (b) Basic Unit, as it only has a fan and a coil and doesn’t include a filter or a cabinet. The unit … Read More
Over my 35 years in the replacement coil business, I have been asked many times about the life expectancy of cooling coils. My answer is almost always the same. In a perfect world, most cooling coils should operate efficiently for twenty years or more. However, since we don’t live in this “perfect” world, a lack of proper maintenance, inappropriate applications, … Read More
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 F (when mixed with glycol) when cooling and a high of 210 degrees F when heating. Chilled Water Coils When maintaining an acceptable living or working … Read More
There are many existing systems that require the addition of cooling to a heating- only unit. Systems need to keep pace with changing requirements for spaces that include a mandatory requirement for cooling. Existing systems can already have cooling, but a booster will have to be placed into the system to add additional cooling. When cooling is added, it must … Read More
Condenser coils have a high number of fins per inch due to which of the factors listed below? a. Helps distribute the air across the tubes b. Drastically improves heat transfer c. Reduces cost d. Reduces air resistance Fins on any coil assist in the distribution of air across the tubes, so adding more fins doesn’t make much of a … Read More
There are many alternatives available in the specifying of coils and their construction, and it’s based on the specific requirements of each project. What might work on one project may not be applicable for another. When you consider projects with adverse temperature, pressures, and corrosive agents into the mix, the discussion needs to include what construction will yield the highest … Read More
