Wednesday, February 20, 2019

Heat Exchanger Basics

Shell and Tube Heat Exchanger
Figure 1 - Shell and Tube Heat Exchanger

Shell and Tube Heat Exchanger
Shell and Tube Heat Exchanger
Disassembled
Heat exchangers transfer thermal energy from one fluid to another. In manufacturing facilities, steam is a common source of heat for many reasons, some of which are discussed in the Introduction. There is a wide range of heat exchanger designs that use steam, largely due to the wide range of products that are heated with steam.

Many process and product considerations must be incorporated into the selection of a heat exchanger. Some basic heat exchanger types are discussed below, including:
  • Tubular
  • Plate and frame 
  • Jacketed
  • Coil

Tubular Heat Exchanger

Shell and Tube Heat Exchanger
Shell and Tube Heat Exchanger
Internal View
Tubular heat exchangers are tube bundles that are surrounded by the heated or heating medium. This type of heat exchanger includes finned tube and shell and tube designs as shown in Figure 1 above. Finned tube heat exchangers are often used to heat air for drying and space heating applications. Shell and tube heat exchangers are often used for liquid heating and evaporation. Since the tube side of shell and tube heat exchangers can be designed to withstand high pressures, sometimes exceeding 1500 PSIG, heat exchangers of this type are often used in high-temperature and high-pressure applications.

Plate and Frame Heat Exchanger 

Plate and Frame Heat Exchanger
Plate and Frame Heat Exchanger
(in clean/sanitary application)
In plate and frame heat exchangers, the two heat exchange fluids are separated by plates. The plates are corrugated, or ridged, as shown in Figure 11, to increase the surface area available for heat transfer. Plate and frame heat exchangers are often used in low-viscosity applications, where the risk of clogging is less severe. The plate ends are typically sealed by covers with gaskets covers that can be removed to allow disassembly and cleaning. This heat exchanger type is used when temperatures and pressures are moderately low, typically below 300°F and 370 psi. Plate and frame heat exchangers also have a common design variation that has the plates welded or brazed together. This allows higher temperature service but eliminates the possibility of mechanical cleaning.

For more information about heat exchangers, contact Mountain States Engineering and Controls.

Web: https://mnteng.com
Phone: 303-232-4100

Thursday, January 31, 2019

VSI Controls GLS Globe Control Valves

GLS SeriesThe VSI Controls GLS Series is recognized as a high-performance control valve in the oil, gas, power, and process industries, the while boasting easy, quick, and economical maintenance. In contrast from other control valves operated by spring-diaphragm actuators, the GLS Series is operated by double acting spring-cylinder actuator that takes advantage of its high pneumatic stiffness, which in turn ensures an excellent and accurate positioning in throttling as well as fast and reliable response to changes in the control signal.

Get more information about the VSI Controls GLS Control Valve Here

Tuesday, January 22, 2019

CCS DualSnap Pressure and Temperature Controls


CCS manufactures pressure and temperatures switches used in many industrial and aerospace applications. CCS’ designs utilize proven, rugged “Dual-Snap®” disc spring and advanced sensing technologies to provide customers superior solutions for pressure and temperature applications.

Contact Mountain States Engineering & Controls for more information.
303-232-4100