Peruse the plate-and-frame and shell-and-tube heat exchangers, coils and heat transfer surfaces within this section.

Protective Coating for Heat Exchangers

Saekaphen protective coating can be used to completely line the interior tube surfaces of shell-and-tube heat exchangers. Coating reduces fouling and protects the tubes from corrosion caused by most chemicals and all cooling waters. The lack of fouling and corrosion reduces maintenance and replacement costs.

Heresite Protective Coatings Inc., (920) 684-6646, sales@heresite.com, www.heresite.com

Gasketed Plate Heat Exchangers

Gasketed plate heat exchangers are offered in sizes from 1.5 to 20" connection size for the HVAC/Industrial markets. Benefits include shorter lead times and lower shipping expense. Users can choose from gasketed, semi-welded and double-wall designs, which ensures that users can meet design requirements with the lowest capital costs. Feature include clip-connect, glue-free gaskets, so the gaskets can be reused after plate cleaning. Gasket changeout is simplified. The simple yet efficient design allows users to recover more waste heat for reuse while saving on energy costs.

APV, An SPX Brand, (800) 554-5290, ft.amer.info@spx.com, www.apv.com

Dry Coolers
Designed for use in the refrigeration, gas compression, petrochemical, power generation and HVAC markets, dry coolers provide cooling of water, ethylene glycol/water, and propylene glycol/water mixtures in a variety of closed-loop applications. Closed-loop cooling eliminates the cost of makeup water and water treatment associated with the use of cooling towers. They are offered with ASME Sec. VIII, CE (PED), CRN, and UL508 safety and performance certifications.
Colmac Coil Manufacturing, (800) 845-6778, www.colmaccoil.com

Stainless Steel Heat Exchangers
Welded end and primary seals on these stainless steel heat exchangers eliminate contamination. Removable access panels ease inspection and cleaning. High heat transfer effectiveness is produced by corrugating the heat transfer plates to achieve a sinusoidal wave pattern. The corrugated surface creates airflow turbulence as the air passes through the unit. Heat transfer is further enhanced by using a counterflow design. Plate sizes range from 12, 36, 42 and 48", with unit lengths of 50, 74 and 98”.  The design of the Series SP spaces the heat transfer plates 0.5" apart; the Series HP spaces the heat transfer plates 0.375". Maximum operating temperature is 1,200°F (649°C).
Exothermics, (419) 729-9726, www.exothermics.com

Air-to-Air Heat Exchanger
With a custom-designed, air-to-air heat exchanger system, you can utilize up to 80 percent of the exhaust heat from any high temperature stack in process ovens, dryers or other plant heating applications. The company has experience supplying hundreds of cost-effective solutions for processors in search of greater energy efficiency. With unpredictable and rising fuel costs, striving for reduced energy usage drops savings directly to the bottom line.
Anguil Environmental Systems, (414) 365-6400, www.anguil.com

Tubular Exchanger for Heat Recovery
Thermo-T recovers energy from processes with temperatures up to 2,000°F (1,083°C) and provides up to 80 percent effectiveness, according to the company. Built to handle high temperatures and corrosive environments, the tubular heat exchanger has welded construction to prevent cross-contamination. Integral thermal-expansion joints allow the heat-exchanging tubes to expand in high-temperature applications without causing excessive stress to the unit.
Munters, (800) 843-5360, www.munters.us

Heat, Cool and Dehumidify
Series C can be used to replace shell-and-tube designs that have high pressure drop and, consequently, high operating costs. The pressure drop on the air/gas cooler shown is 0.1 percent; the model it replaced was 2.4 percent. The lower pressure drop will save 50 hp, which translates into energy savings annually. Unit is stainless steel and has a washable, metal prefilter ahead of the cooling core and a removable mist eliminator downstream of the core. It will cool 5,000 cfm at 12 psi from 250 to 65°F (121 to 18°C) using 55°F (12.7°C) cooling water.
Xchanger, (952) 933-2559, www.xchanger.com

Heat Exchanger Coils
Line of heat exchangers for immersion heating applications includes coil designs such as U-shaped, serpentine, helical and multiple layer grid coils. Coils can be constructed with a range of materials such as fluoropolymers (Teflon), steel, stainless steel, titanium, Hastelloy C, zirconium, or other exotic materials, in designs from schedule 80 pipe to thin wall tubing.
Process Technology, (440) 974-1300, www.process-technology.com

Multi-Tube Bundle Graphite Heat Exchanger
Graphite exchangers utilize multiple bundles to improve heat transfer rates and simplify maintenance. Model RM allows the entire heat exchanger to operate in a countercurrent flow regime, thereby reducing the required surface area by up to 40 percent vs. traditional shell and tube technologies. Applications with close temperature approaches or even temperature crosses are easily handled. The bundle modules can be removed for cleaning or inspection by maintenance personnel. Graphite exchangers are used for heating and cooling corrosive chemicals such as hydrochloric, sulfuric and phosphoric acids.
SGL Carbon Technic LLC, (440) 572-3600, www.karbate.com

Plate Heat Exchanger Gaskets
Gaskets fitted to plate heat exchangers are offered in three material designations to satisfy challenging applications: 09-538/E8ZP4, 09-560/E9291 and 26-006/H8ZP1. They are intended for sealing heat exchangers in applications with extremes such as temperatures of -49 to 392°F (-45 to 200°C) and pressures up to 508 psi (35 bar).
Trelleborg Sealing Solutions Americas, (260) 748-5895, www.tss.trelleborg.com/us

Coils
Steam, liquid heating, cooling and refrigeration coils are custom designed for specific application requirements. Copper, stainless steel or carbon steel tubes are offered with aluminum, copper, stainless steel or carbon steel fins.
Luvata, (662) 229-2000, www.luvata.com

Compact Plate-and-Frame Exchanger
Plateflow is designed to provide close temperature control of fluids for heat recovery applications where space is a prime consideration. Efficient countercurrent flow yields heat transfer coefficients that are three to five times greater than other types of exchangers. Unit can be specified in 20 different models for heat transfer surface as high as 9,180 ft2. Plates are removable for service and maintenance.
ITT Standard, (800) 281-4111, www.ittstandard.com

Standard Shell-and-Tube
Offered in straight- or U-tube configurations, Basco Type 500 shell-and-tube heat exchangers have a fixed tubesheet. The highly standard design offers cost effectiveness while providing for options to meet specific customer requirements. Sizes range from 3 to 12" dia. and 14" to 120" length. Shell materials of construction are carbon steel or 304 stainless steel. Tubes can be constructed in 0.5, 0.375 or 0.625" dia. sizes in copper, Admiralty, 90/10 copper/nickel, or 304 stainless steel.
API Heat Transfer, (877) 274-4328, www.apiheattransfer.com

Plate Heat Exchanger
Accu-Therm is designed to provide highly efficient heat transfer, whether you are processing simple fluids, viscous solutions or particulates. The plate heat exchanger design eases cleaning and maintenance and allows closer approach temperatures than other heat transfer technologies. It is offered in a range of plate sizes and configurations, with plates as large as 27 ft2 (2.5 m2). Several plate geometries are available for different heat transfer effects, including the company’s “free-flow” plate design, which is intended specifically for slurry processing.
Paul Mueller Co., (417) 575-9000, www.muel.com

Coils
Coils are offered in designs with seven to 12 fins per inch with various fin heights. Tube diameters of 0.625 and 1" OD as well as heavy wall thicknesses are available. Varied tube centers meet replacement coil criteria. Possible applications include compressed gas, high-temperature steam coils, high-pressure vapor recovery coils and flue gas heat recovery as well as use as intercoolers, aftercoolers, oil coolers and jacket water coolers.
Super Radiator Coils, (800) 394-2645, www.srcoils.com

Large Capacity, All-Welded Exchanger
Supermax is designed as an alternative to shell-and-tube units in elevated pressure and temperature applications. The all-welded plate heat exchanger is suited to applications with large flow imbalances, including gas or vapor condensers, economizers and related process and energy services, for pressures up to 70 barg (1,015 psig) and temperatures up to 1,000°F (538°C). With alternating channels for hot and cold media, the unit can be configured to provide true countercurrent or co-current flow. Nozzle sizes up to 12" (300 mm) can be accommodated on the shell side of the exchanger, offering high steam and liquid flow rates. Nozzles on the plate side can be up to 4" (100 mm).
Tranter , (940) 723-7125, www.tranterphe.com

Shell-and-Tube Fluoropolymer Heat Exchangers
Fluoropolymer heat exchangers can be used in process applications to heat or cool highly corrosive fluids such as ammonium hydroxide, sulfuric and hydrochloric acids. A shell-and-tube design from the company has been incorporated into the Purate model chlorine dioxide generator from Eka Chemicals to supply sulfuric acid solutions. The small-scale generator utilizes a hydrogen peroxide-based chemistry that yields chlorine dioxide by reducing sodium chlorate in the presence of sulfuric acid.
Ametek Chemical Products, (800) 441-7777, www.ametekfpp.com

Gasketed Plate Exchangers
Series NT is suitable for liquid-to-liquid applications in the chemical, power, sugar, renewable energy, food and HVAC industries. The OptiWave plate configuration provides even media flow over the entire width, making full use of the area, and increasing efficiency with fewer plates. Conventional plates allow most media to flow directly from one port to the other, reducing the flow on the far side. Sizes range from 2 to 30,000 ft2of total heat transfer surface. Connection sizes range from 2" to 20", and liquid volume flow ranges up to 20,000 gal/min.
GEA PHE Systems, (800) 774-0474, www.gea-phe.com

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