What are Duct Heaters? It’s easy to understand what duct heaters are just by considering their name. Simply put, duct heaters are installed in the ducting ventilation systems. The most common way they’re installed is through the sidewalls. The application of duct heaters in the sidewalls allows them to heat the air in the duct as it flows in and around the heating element of the open coil. More often than not, duct heaters can be used for a variety of purposes. Some of these applications include HVAC systems and numerous industrial applications. The design of a duct unit is determined by the intended use and function of the air system.
The shape of the duct heater varies with each unique situation and function. More commonly, they’re manufactured in a square shape but rectangular heaters are equally as common when custom-built heaters are required. Round duct heaters are also good options when the situation arises.
Three and single-phase duct heaters are available in the market with the voltage capacity of around 600V. The watt quotient of the duct heater is also subject to multiple variations. Resulting in a variety of duct heaters present in the market, ranging from less than 1kW to a maximum of around 175kW. As far as the circuit considerations of a duct heater are concerned, they can be done in multiple stages. Each stage itself represents a standalone circuit:
Watt density, in this context, means the density of the heater coil watts per square inch of the coil wire’s surface area. Usually, it’s important to note that the watt density is not specified by industrial users, although they can limit it in terms of not to exceed a certain limit of watt density. When it comes to watt density, the lower the number the better it is assumed, since the coil life is inversely related to it.
The flow rates of a duct heater are calculations that are based on the area of the duct and the velocity of the air. A lack of adequate airflow in duct heaters reduces the duct heaters effectiveness. This is because a lack of airflow will result in breakage and coil overheating in duct heaters.
Why is Mineral Oil Used in Thermal Heaters?
Thermal heaters, also known as thermal fluid heaters, employ the use of a thermal liquid such as wat...
What to Use When Heating Wax
SituationA popular chemical compound that often requires heating is wax, which is an organic compoun...
What is Passivation? Why do We Need to Passivate Flanged Heaters?
Most of the parts of flanged heaters are made of stainless steel—an alloy that is mainly compri...
What is a Digital Controller?
Control panels are essential elements of any electrical device. Control panels are especially i...
Vegetable Oil Heating
Food Industries and Vegetable Oil Viscosity In Cleveland Ohio, a large food manufacturer called WATT...
Benefits of Immersion Heating for Industrial Tank & Reservoir Heaters
Tank and reservoir heating is an essential task in many industrial processes. It maintains mediums i...
Come and visit us at the Salon Industriel de Quebec October 2, 3 & 4 . Booth #524
Great Show today, just finished for the day. Come and visit us at the Salon Industriel de Quebec Oct...
Secrets For Improving Electric Immersion Heater Lifespan
Immersion heaters are the beating heart of all sorts of industrial processes. As such, your heater i...
4 Common Causes & Solutions of Circulation Heater Fouling
If you have noticed a decrease in the efficiency of your circulation heater, the most common culprit...
Advantages of Preheating Crude Oil With Electric Flanged Heaters
Crude oil refining is one of the most complex chemical processes in the petrochemical industry. As s...
Electric Heating Coils: Selection & Design
Electric heating coils transfer energy into heat in a variety of heating applications. They’re an ...
Duct Heating in HVAC and Building Construction
Heating, ventilation, and air-conditioning (HVAC) systems are used for heating and cooling residenti...
Temperature and Power Controls for Industrial Electric Heating
A control system is an essential part of every industrial heating system. Whereas some applications ...
.Crude oil, unprocessed fossil fuel, is one of the most important natural resources. In its unproces...
What is a Pressure Vessel?
Pressure vessels are carefully fabricated, enclosed containers designed for the purpose of holding e...