Sometimes finned tube heat exchangers, ACHEs, coolers or dryers are enclosed in duct work, and sometimes they are fully exposed with air. tubes bend. Overall Heat Transfer Coefficient. Specific heat, or specific heat capacity, is a property related to internal energy that is very important in thermodynamics. Motul RUBRIC HM 46 208L. Heat exchanger prices depend on several factors, quality, size, energy efficiency, and whether it is a gas or electric furnace. Heat exchangers (HEX) are crucial in many heat transfer applications, from. Q =U 3 A 3 (f 3 LMTD) Where: Q=Rate of heat transfer, Btu/hr (duty) A=Net heat transfer area, sq ft (surface area) U=Overall heat transfer coefficient. The process is proven and is currently in use in many different industries. LEDERREINIGER 12X0. Jadi lempengan yang di isi oleh fluida panas akan diapit oleh lempengan yang di isi fluida dingin. Many types of heat exchangers have been developed for use in steam power plants, chemical. Selection of heat exchanger TEMA layout and number of passes. ‐ Dynamic type regenerative heat exchanger: involves a rotating drum and continuous flowHow a Heat Exchanger Works. The heat-carrying fluid can be either. You may notice dark spots where the crack occurs. In a recent evaluation, a major bearing manufacturer monitored the performance features of two, functional metal-to-metal contact surfaces using an ASTM D 2714. parallel-flow. and Herring, D. (1), the heat transfer coefficients of finned and unfinned surfaces are idealized to be equal. Number of tubes in a row ( n t) = 8. This will help you to prepare the heat exchanger specification. Get started. qT = UAΔT1 − ΔT2 lnΔT1 ΔT2 = UAΔTlmtd, where ΔTlmtd is the log-mean temperature difference. Heat damage in underground mines has always been a difficult problem that troubles mining work. H. 18. (a) Periodic heat transfer-conduction. Complexity: The complexity of the installation can also affect the cost of replacement. 1. H. Heat flow through a furnace heat exchanger. (Btu/hr 3 hr 3 sq ft 3 deg F) f=LMTD correction factor for. 1 Indirect-Contact Heat Exchangers In an indirect-contact heat exchanger, the fluid streams remain separate and the heat transfers continuously through an impervious dividing wall or into and out of a wall in a transient manner. There are many different types of heat exchangers that are categorized based on different criteria, such as construction, flow arrangement, heat transfer mechanism, etc. Polished Mild Steel Fluid Bed Dryer Heat Exchanger, For Food Process Industry, For Hydraulic and Industrial Process. If you live in the Springfield, Missouri area, schedule maintenance for your furnace by calling Sun-Aire Comfort Systems at (417) 352-0975. Alat penukar panas pipa rangkap terdiri dari dua pipa logam standart yang dikedua ujungnya dilas menjadi satu atau dihubungkan dengan kotak. A very useful concept. It should be noted that the lower the energy parameters value is, the higher the cooling rate will be. Open the catalog to page 1. and Herring, D. 1% to 0. This is the most effective method of heat exchange. The thermal, metallurgical, and mechanical material properties of a heat-treated steel depend on temperature, phases, and carbon. Often taken for granted in most race cars, the ring and pinion is often used, abused, with little attention paid until a failure occurs. or shipping. (1) and (2) and integrating over the area A of the exchanger we see that. Superfinishing, also known as micromachining, microfinishing, and short-stroke honing, is a metalworking process that improves surface finish and workpiece geometry. Due to. 1 through 4 show an embodiment of the invention applied to a superfinishing machine for superfinishing the outer peripheral surfaces of annular workpieces, wherein FIG. [1] [2] It is the most common type of heat exchanger in oil refineries and other large chemical processes, and is suited for higher-pressure applications. H Azimy, N Azimy, AH Meghdadi Isfahani, SA Bagherzadeh,. Long service life for the tools, short processing time. October 5, 2023. )Cleaning chemicals depend on the same variables for a plate-and-frame heat exchanger, and cleaning compounds must be compatible with the metallurgy of the heat exchanger. Heat Recovery Innovation’s Primary Surface Heat Exchanger doesn’t involve any secondary surfaces and doesn’t need them to provide stellar performance. A compromised heat exchanger can cause corrosion or damage to other furnace components, such as the draft inducer box or inducer motor. •like thermosiphons, heat exchangers in networks, any fluids with skin temperature limits, applications with 2-phase flow, etc. Heat Recovery Ventilator or Energy Recovery Ventilator and Climate. Stephen Hall discusses the golden rules for design. heat exchanger, any of several devices that transfer heat from a hot to a cold fluid. This heats the surface of the heat exchanger. [2] The simplest heat exchanger is one for which the hot and cold fluids move in the same or opposite directions in a concentric tube (or double-pipe) construction. Thermal science teaches us that for a flat plate heat exchanger, the overall heat transfer coefficient U is such that its inverse, called thermal resistance, is the sum of thermal resistances between the two fluids: U 1 = 1 hh + e λ + 1 hc (5. To meet these needs, it is necessary to expand the knowledge of heat-treating and quenching to consistently produce a quality product, capable of being manufactured in a cost-effective manner. These plates are positioned over each other to create a channel series so that fluid can move between them. Untuk heat exchanger ini sendiri akan menggunakan bantuan mekanik dalam penurunan dari suhu fluidanya itu sendiri. Honing, lapping and superfinishing are performed under low speed and pressure conditions, resulting in a gentle action as compared to grinding and machining processes. A typical steel gear manufacturing. Heat exchangers use one of four basic flow designs: “(i) Cocurrent flow, (ii) Countercurrent flow, (iii) Crossflow, (iv) Hybrid flow”. The gas quenching was. Although different companies and entities may apply their own definition to the term, in. These isotropic superfinishes achieve the highest performance ratings in terms of friction, heat, noise and wear in the bearing, gear, and turbine industries. Brazed Plate Heat Exchanger. Assuming that the hot fluid enters at 500°F and leaves at 400°F, calculate the LMTD for the exchanger. This article guides you through the engineering design techniques you need to know and how to get started. However, these treatments are not material free and proper treatment process depends on the type. This pipe is surrounded by a substance that can be heated, such as cold water. This calculator is used to calculate the heat transfer area required for a heat exchanger. Wet Cooling Towers. The units then become BTU/hr for the heat that needs to be removed from the system. condensing vapor to liquid. In the parallel-flow arrangement of Figure 18. 8(a) , the hot and cold fluids enter at the same end, flow in the same direction, and leave at the same end. The fluid temperatures inside the shell and tube differ; this temperature difference drives temperature exchange. Heat load is usually expressed in BTU/hr. A plan for increasing heat exchanger performance for shell and tube exchangers should consider the following steps. Wait until the system cools before doing anything else to minimize exposure to hot fluids. For most applications, the austenitizing temperature is approximately 25-30°C above the A c3 temperature. Maintenance techniques will vary. Whether you need shell and tube heat exchangers for multi-stage evaporation in an ethanol plant, condensing organics in a chemical plant, vaporizing LNG in a refinery, heating asphalt to ensure pliability, or for landfill gas cooling, Enerquip is the right source for dependable, high-quality shell and tube exchangers you can trust. One fluid flows through the tubes (tube side) while the other flows over the outside of the tubes (shell side). A heat exchanger is a device that facilitates the process of heat exchange between two fluids that are at different temperatures. Heat transfer, any or all of several kinds of phenomena, considered as mechanisms, that convey energy and entropy from one location to another. range of bespoke engine heat exchangers. STANDARDS: ADVANTAGES • Zinc free. Durability in the form of pitting resistance is an area that has been extensively researched in regards to isotropic superfinishing technology. Selection of heat transfer models and fouling coefficients for shell side and tube side. cleaners; rust preventatives; general lubrication. Carburizing can be performed in the temperature range of 800ºC (1475ºF) to 1090ºC (2000ºF). Therefore, the. Ms- Concrete Chipping for Mep Installations - Free download as Word Doc (. Heat exchangers are manufactured from basic material shapes that undergo forming, machining, and welding processes to fabricate them into the major components. Powder & Bulk Processing. This. These heat exchangers absorb heat in the enclosure, then use cooler air outside the enclosure to draw the heat away, lowering the temperature inside. Since the vehicle was released in 2019, enthusiasts have been looking for performance upgrades to unleash the full potential of the BMW-sourced B58. Determining concentration by weight and volume. TEMA (Tubular Exchangers Manufacturing Association) is the preferred standard for the manufacture of shell and tube heat exchangers. The difference between the condenser and a heat exchanger is that condensers convert steam into a liquid state. When metal components come into contact with each other, contact stresses and friction occurs which directly. A plate heat exchanger is a type of heat exchanger that uses a series of metal plates to move heat from one fluid to another. Heat exchanger duty, cold stream flow rate and mean temperature difference are also determined by the calculator. The unit. So, the heat transfer contact area reduces, and the molten pool length increases. Home heating systems will use these heat exchangers to transfer heat from a boiler to make the air nice and warm. Since its launch in 2016, the SONDEX ® branch of Danfoss Brasil has worked hard to become the leading manufacturer of plate heat exchangers for customers across Latin America. This is defined by the heat flux density (W m −2). Heat exchangers may be divided into several categories or classifications. Heat Exchanger Replacement. · Reduction in lubricant temperature. To recovery the waste heat from the stripped water, the stripped water will exchange heat with the feed. Richard Liu. First, thermal and fluid dynamical design and then mechanical design. An example of this type of application is a heating system with indirect district heating. Flat Plate and Fin Exchangers. Petroleum and Gas: Plugs, gates, balls and other valve components. Plate Heat Exchanger. pdf), Text File (. 4. Traditionally, two different. Lectures 19 Applied Heat Transfer CM3110 12/3/2019 3 T , outer bulk temperature T, inner bulk temperature L BUT: The temperature difference between the fluid and the wall varies along the length of the heat exchanger. A heat exchanger is a unit operation used to transfer heat between two or more fluids at different temperatures. This is defined by the heat flux density (W m −2). Heat exchangers are used to transfer heat from one medium to another. The general descriptions of the three major TEMA classes are: TEMA C – General Service. , Gear Heat Treatment, Part I & II, Heat Treating Progress, June 2002, July/August 2002. Copper Heat Exchanger For Die Casting Machine, Compact. Our engineered technologies allow us to tackle any substance or severity of fouling. The earth-air heat exchanger (EHX) has a promising potential to passively save the energy consumption of traditional air conditioning systems while maintaining a high degree of indoor comfort. The secondary water flow and return temperatures are 82 °C and 71 °C respectively, at a pumped water rate of 7. When a heat exchanger cracks, it can get discolored from soot build-up. In fact, replacing a furnace heat exchanger can take up to 8 hours and can cost anywhere from $2,000 to $3,500. Sectors: Downstream, Midstream, Upstream. Heat exchangers provide heat transfer between two or more of the coolant flows. The fluids are. Heat exchanger dapat digunakan untuk memanaskan fluida kerja pada suhu yang diperlukan. Heat treating gears increases their durability and strength, and there are. Brazed-plate heat exchangers provide large surface area for improved heat transfer in a small volume. cleaners; rust preventatives; general lubrication. Here, an overview on flame hardening, as well as spin hardening and robotic gear hardening, is discussed. The heat exchanger area is A, and the overall average heat transfer coefficient is U, and is assumed to be a constant, independent of temperature. from the University of Waterloo (Canada) in 2012. The heat exchanger design is a thermal heat transfer device that exchanges (hence their name) the thermal energy from one source and transfers it to another at different temperatures. 7. Some simple examples of shell and tube heat exchangers include boilers, which heat. 2 is a front view of the same, FIG. 1 Classification of Heat Exchangers Parallel flow heat. 3 Superfinishing 10-25 10-3. Sponsored Links. These heat exchangers can either be water-cool, or air-cooled. Example- shell & tube heat exchanger, tubular heat exchanger, plate heat exchangers. 1 No. ’. The tests indicated that superfinishing offered no improvement in performance due to the high lubricant film thickness generated by the extremely high. 500L View Details. 4. Many of the heat transfer processes encountered in industry involve composite. The traditional standard type of heat exchanger is the shell and tube,. 500L View Details. Heat transfer is the science of how thermal energy is exchanged between different systems and substances. Superfinishing the working surfaces of gears and their root fillet regions results in performance benefits. Products / Superfinishing materials and tools / Products for flat lapping Portable kits Diamond fluids and abrasives. A Review of High Pressure Gas Quenching Technology, Part One: The Heat Transfer Coefficient, HOT TOPICS in Heat Treatment and Metallurgy, Vol. 1. On the other hand, heat exchangers recover the heat produced during the process of converting steam to liquid. Most furnaces will have a blower delay to get the furnace up to temperature before moving air over the exchanger. REGENERATIVE HEAT EXCHANGERS. The heat exchanger is used to heat a cold fluid from 120°F to 310°F. 1 is a plan view of a superfinishing machine equipped with a honing stone exchanger, the machine being shown partly cut away; FIG. This is the idea behind the form of the heat exchanger design equation: Q ˙ = U 0 A Δ T m. nonideal flow (dimensionless)The first step in sizing a heat exchanger is to calculate the heat load (duty). This will help determine the size of the heat exchanger required to handle the thermal energy transfer. It is difficult to independently control a single physical variable in the experiments to study its influence on the molten pool. Aditivos. One fluid flows inside the tubes, the other flows across and along the tubes. 4°F during the test. 150 - 700. J. A finned tube heat exchanger, air cooled heat exchanger (ACHE), cooler or dryer works by flowing a liquid into a series of tubes, whilst pumping gas or air around or over the pipework to cool the fluid down. Heat exchangers are crucial in thermal science and engineering because of their essential role across the landscape of technology, from geothermal and fossil power generation to refrigeration,. high-precision superfinishing, and has become one of the most widely used industrial machining and surface finishing operations. A hot, less-dense lower boundary layer sends plumes of hot material upwards, and cold material from the top moves downwards. The second in a two-part series, this installment addresses induction gear hardening by encircling the whole gear or sprocket with an induction coil, also known as ‘spin hardening. Specific heat of Tungsten Carbide is 292 J/g K. The average cost of replacing your exchanger is about $1,500. Does my furnace have trouble heating my home (are there hot and cold spots)? a) If you answered “no” to both,. Some furnaces have two heat exchangers. Heat exchangers are widely used in automobile radiators, domestic and. The surface appearance is characterized by a fine grind-ing pattern and a uniform and imperfection-free finish. However, it is easy to realize in a finite element model. Q = UA (FΔTlm) In this equation, U is the overall heat transfer coefficient, A is the total area of heat transfer, ΔTlm is the log-mean temperature difference, and F is the log-mean temperature difference correction factor. There are two methods of constructing heat exchangers: plate type and tube type. , has been fulfilling for many decades with SUPERCHANGER' plate & frame heat exchangers. While there are several possible points of failure within the Cool the air in your enclosure to protect electronic components from excessive heat. Rear Header—this is where the tubeside fluid leaves the exchanger or where it is returned to the front header in exchangers with multiple tubeside passes. These units recover heat from exhausted air and return it to the building. 8(a) , the hot and cold fluids enter at the same end, flow in the same direction, and leave at the same end. Insert now with best price guarantee. Both these processes work are similar but. , Gear Heat Treatment, Part I & II, Heat Treating Progress, June 2002, July/August 2002. MSDS Data sheet difficult conditions of metals parts and assemblies. The investigation involves using the commercial code of ANSYS CFX, which incorporates the modeling,. ADVANTAGES. Abstract. TEMA R – Refinery Service. At least two matrices are required. Albins AGB 10” See pricing and included parts Weddle S4D See pricing and included parts. Depending on the efficiency of the furnace in question, it would have one or two heat exchangers. In the Spotlight: Heat Treat 2023. In this method, a global heat exchanger is divided into several sub heat exchangers in series-and-parallel arrangement [14]. · Prevents micro and. Air cooling system of a heat exchanger has chillers, condensers and fin fans. Cutting draw technology. Recommended for long-term protection of metal parts, for storage or shipping. 000 machines. Carbon provides the hardness, and the alloying elements provide. Therefore, in this article we will discuss the Process Data Sheet (PDS) of a Shell & Tube Heat Exchanger. Air Cooled Heat Exchanger. Modern practice is to use air-cooled heat exchangers. Gears enable motion through power transfer in key sectors, including automotive, aerospace, marine, off-highway, and industrial applications. 8(a) , the hot and cold fluids enter at the same end, flow in the same direction, and leave at the same end. A close-up view of a tube heat exchanger tube bundle. The wrong material can lead to higher cost and longer production times if it’s more difficult to. Using the example of quench oil again, viscosity is used for determination of the heat transfer coefficients used for sizing a heat exchanger. Tube-in-Tube Heat Exchanger. 3. PROTHERM SERIES. Each tube passes through a series of baffles and tube sheets (also known as ‘ tube stacks ’). EXPRESS-GLANZ 12X0. Even bicycle frames are heat-treated for strength, lightness, and durability. Camshaft induction heat-treated for wear and strength. October 5, 2023. from the University of Waterloo (Canada) in 2012. hydraulic; multi-functional oils; gear oils & greases; slideway oils & greases; spindle oils & greases; chain oils & greases; greases & pastes; compressor oils. This exchange allows the cold air to increase and hot air to reduce temperature to make sure the air is properly warmed for the home. Yeah, we know that’s crazy expensive. Air Cooled Heat Exchanger. Correcting flaws in construction and piping that may have a detrimental effect on heat transfer and pressure drop may be the solution. Shell-and-Tube Heat Exchanger. 25 mm (0. 1) The exchanger consists of a large outer shell (light gray) with tubes running through it (dark gray). Superfinishing removes 1-2 microns of stock on radius and requires less energy. In this paper, we analyse the performance of two types of heat exchangers with nanofluid as the working fluid in turbulent flow regime (R e ≈ 4, 000–180, 000). Even bicycle frames are heat-treated for strength, lightness, and durability. One of the oldest ways to check for heat exchanger cracks is to simply observe the flame when the blower starts. 1 Introduction. HEAT exchangers are critical elements in every process plant. A condenser is a heat exchanger device that is used to condense or cool down the fluid from a gaseous state to a liquid state. 19a. Reach target temperatures quicker than the competition. Combustion gases escape through the flue with no system in place to harness the lost energy. Fouling, scaling, salt deposition, weld defects, and vibration are the most. A plate heat exchanger is used to transfer heat energy from one fluid to another. Compressed gas, typically nitrogen or helium (which has a better heat transfer coefficient but is no longer viable), has very limited heat-transfer properties. A dehumidifier will cost between $200 and $300 to purchase, and maybe $10 to $15 a month to operate. Heat exchangers are devices that are used to transfer thermal energy from one fluid to another without mixing the two fluids. In this pdf document, you will learn the basic concepts and principles of heat transfer, such as conduction, convection, radiation, and phase change. Image Credit: Anton Moskvitin/Shutterstock. 1. It is difficult to independently control a single physical variable in the experiments to study its influence on the molten pool. U 0 A = 1 R tot. Heat Exchangers. Typically, a plate heat exchanger will consist of several parallel plates positioned above each other, thus creating a passage in which the fluid can flow between. A heat exchanger is a device that facilitates the process of heat exchange between two fluids that are at different temperatures. eta =frac { {mathrm {tanh} left (Fa ight) }} {Fa} In the equation above, Fa is the fin analogy number which can be evaluated for some common heat exchanger as what follows. from 0. With the inverse heat transfer method, the heat flux to the workpiece surface is calculated form the measured temperature distribution within the workpiece. For example, a heat exchanger made of stainless steel will be more expensive to replace than one made of aluminum. PROKNIT series. //Shell & Coil. Indirect contact type heat exchangers are classified according to relative. The optimization of a heat exchanger design can be viewed at three different levels: 1) the identification of a heat exchanger design that meets the process specifications (described below) at the lowest initial cost; 2) the identification of a heat exchanger design that will meet process specifications and operate most satisfactorily. 5 W/(m K) (Chen et al. Its heat exchange products boast a wide range of excellent performance and have a high reputation globally. The cooling lubricant must be matched with the material to be honed and the honing stone specification. Tubing is in the form of welded or seamless, but the welded type is more economical than the other one. txt) or read online for free. Show more. APPLICATION Waxy fluid, highly water repellent, for long-term protection in difficult conditions of metals parts and assemblies. · Reduced transmission noise. The SUPERMAX® Shell And Plate Heat Exchanger is designed as a performance upgrade over shell and tube, block-type welded and brazed aluminum heat exchangers. Fig. A heat exchanger typically involves two flowing fluids separated by a solid wall. 500L View Details. Radiators and Solar Exchangers. Workspace Chuck diameter: 250 mm Plan transfer stroke X: 800 mm Longitudinal stroke Z: 300 mm Feed Rapid speed X: 100 m/min Rapid velocity Z: 45 m/min Spindle box Spindle head (flat flange): 170h5 mm Spindle diameter in the front bearing: 120 mm Spindle bore: 79 mm Main drive Power of the three-phase. A shell and tube heat exchanger passes fluids through and over tubes, where as an air cooled heat exchanger passes cool air through a. loss and material. Features. Key benefits of the isotropic surface finishing process. reviewed the impact of isotropic superfinishing on spiral bevel gears using a power circulating pitting (contact) fatigue testing rig. Mark R Riggs. These two integral pathways are usually built out of thermally conductive metals that allow easy heat transfer ( steel, aluminum alloys, etc. Make sure the heat exchanger’s pressure goes down using a safety relief device, checking that the pressure relief valve reads zero. The main objective of this research is to investigate the capability of laser powder bed fusion (LPBF) to manufacture complex heat exchangers with gyroid-shaped channels. These gears are a multiplier only for the rear diff ratio. In the case of a boiler, this means transferring heat from gas to the water that will be circulating around your home to the radiators and hot water tank. ADVANTAGES. d(ΔT) dq = ΔT1 − ΔT2 qT. Āvāz, Khuzestan, Iran. The retort is either heated using gas or electric heating elements. and all loosely adhering particles. Abstract. APPLICATION & PERFORMANCE Suitable for the lubrication of high-speed spindles bearings, air line oilers, hydraulic systems requiring low-viscosity lubricants in grinders and other machine tools. With multiple heat exchangers, the cost is equivalent to hydroblasting on a per heat exchanger basis. October 5, 2023. Figure 1. Suitable for fluid. heat exchanger, any of several devices that transfer heat from a hot to a cold fluid. Heat exchangers with. 1 General. This heat exchanger consists of two concentric pipes of different diameters. Hot and cold fluids flow through this porous mass alternately. Heat Treatment of Gears is designed to provide the gear design engineer with a better understanding of heat treatment and its effects on gear quality and performance, especially as these considerations are critical to ensuring that the gears perform satisfactorily under anticipated service conditions. Some of the more common Heat Exchanger Designs and types include: Tubular and Shell Heat Exchanger Design. GERUCHSNEUTRALISATOR 12X0. This rapid increase in heat can cause the two surfaces to momentarily weld together. Btu/hr. 2. If the part you require isn’t listed below, please contact our sales team on +44 121 359 5401, as a limited number of heat exchangers for certain obsolete British Leyland, Ford, Mercedes Benz and Perkins engines are available. Contact Mechanics of Superfinishing. Heat exchangers are used in many engineering applications, such as refrigeration, heating and airconditioning systems, power plants, chemical processing systems, food processing systems, automobile. Regardless of the type of racing, the gears are. This is the idea behind the form of the heat exchanger design equation: Q ˙ = U 0 A Δ T m. The Heat Exchanger Tubes. By utilizing non-abrasive, high-density media in conjunction with an isotropic superfinishing (ISF) chemistry, surfaces can be superfinished to an isotropic or random finish. Heat exchangers are classified according to transfer processes into indirect- and direct-contact types. Critical elements: Heat exchangers at an oil refinery. MSDS Data sheet difficult conditions of metals parts and assemblies. g. The main difference that separates heat exchangers and chillers from each other is their design. The heat generated during the bearing working process would greatly affect the working life and stability of bearing and mechanical transmission system. A very useful concept that goes along with total resistances is the overall heat transfer coefficient. Part 1 was published in the. The heat is transferred from the district. 90). Reduce friction and extend the life of your driveline components. 1 Extract from steam tables. Flow configuration of heat exchangers is countercurrent, co-current or parallel flow, cross flow, and hybrid flow. Corroded or Damaged Components. The fracture appearance of sintered materials was analyzed, and the effects of heating temperature or cenospheres. One of the tube sheets is. Vacmul EDM 3 is a highly refined, narrow-cut, low viscosity fluid specially suited to finishing operations where a high quality finish is required. The heat exchanger then transfers the heat from the furnace to the outside air. APPLICATION Antiwear, anti-corrosion and anti-oxydation, high performance hydraulic oil for hydraulic systems working under severe conditions. Heat exchangers are typically classified according to flow arrangement and type. We’re able to inspect blocked heat exchangers and twisted tubes, and. Water Flashing At The Shell Side Of Heat Exchanger - posted in Industrial Professionals: Attached drawing is a configuration of high pressure steam stripper. A general equation can be used to calculate the efficiency of heat exchanger developed for a number of known exchangers. Tribol. A heat exchanger uses fluid to transmit heat without transferring the heat-carrying fluid. By the late 1990s, both the military and the aerospace industries were studying various surface treatments, including coatings and abrasive superfinishing processes, to enhance component performance and durability. 2. D. 1) Determine that the exchanger is operating correctly as designed. This is based on how much energy is required to heat or cool a specific process fluid from one temperature to another. Also known as shell and tube heat exchangers, these transfer heat using liquid or steam that flows through the shell to heat or cool liquid in the tubes.