Open vessels that contain heated liquids often have high heat loss due to surface evaporation. Both energy and liquid losses are reduced by covering open vessels with insulated lids. The table below provides an estimate of the evaporative heat loss per square foot (ft2) of uncovered vessel surface area for various water and dry ambient […]
Exposed bolts within valves are not suited for all applications. Some industries, such as refineries and chemical facilities require tight sealing, without bolt exposure, to ensure optimal safety. Other industries that are heavily reliant on liquid, gas and steam processes also fall within this category. What’s wrong with exposed bolts? Simply put, exposure to fire, […]
QMax recently released a detailed whitepaper on how HTC thickness and installation quality affect tracing performance. Here is a short segment along with a link to download the complete whitepaper. One of the most misunderstood and misused components of conductive steam tracing systems is heat transfer compound, or HTC. HTC is a viscous mastic designed […]
We sell a lot of valves at Campbell-Sevey, but one that we really like based on how well it is designed is DFT’s WLC Sever Service Check Valve. It’s design and sizing technology resolves issues with water hammer in boiler feed pump applications, solves flow problems and lowers the cost of ownership. The WLC Check […]
The design of the QMax FTS maximizes the heat input of regular stainless steel or copper tube tracer, transforming the nature of a steam tracer from ineffective convective heat transfer to highly efficient conductive heat transfer. What makes it unique is the heating surface area is increased to as much as 2 inches using highly-conductive […]
What is the relationship between longitudinal stress and circumferential stress: A. They are the same B. Longitudinal stress is twice circumferential stress C. Circumferential stress is twice longitudinal stress D. There is no fixed relationship between the two And the answer is… C. Circumferential stress is twice longitudinal stress Internal pressure can be produce by […]
There are lots of applications where HVAC coils are used. Most are either manufactured by a an OEM or a custom coil manufacturer. Both play an important role in the market, however there are some key distinctions which can make it more favorable to have your coils custom manufactured. 1. Nearly any type of coil […]
Deaerators are mechanical devices that remove dissolved gases from boiler feedwater. Deaeration protects the steam system from the effects of corrosive gases. It accomplishes this by reducing the concentration of dissolved oxygen and carbon dioxide to a level where corrosion is minimized. A dissolved oxygen level of 5 parts per billion (ppb) or lower is […]
Humidity affects many properties of air and of materials in contact with air. A huge variety of manufacturing, storage and testing processes are humidity-critical that’s why humidity controls are used to prevent condensation, corrosion, mold, warping or other spoilage. However the cost of controlling humidity, through air-conditioning systems or other means, can take a significant […]
