Heat Exchanger
The Basics of Heat Exchangers
Heat exchangers are a staple in today’s devices. They are not only present in the simplest of devices; heat exchangers have also found their use in big industries and machineries in the world today. They are basically devices found in some machines that enable it to transfer heat from one medium to another. They facilitate the efficient transfer of heat from one object to another.
Use of Heat Exchangers
One example of this is the radiators found in cars or air conditioners. What usually happens is that a heat source transfers water that will cool the engine through the exchanger. The exchanger will transfer heat from the water to air leaving the engine cooler.
Heat exchangers are widely used for the purposes of space heating air conditioning and even refrigeration. Heavy industries that also use this technology include power plants, chemical and petrochemical plants, oil and petroleum refineries, natural gas processors and sewage treatment facilities.
Types of Heat Exchange Flow
Heat exchangers can be classified into two types, mainly according to their flow arrangements. These are the parallel-flow and the counter-flow heat exchangers.
The parallel-flow exchange involves the two mediums going in the exchanger through the same side of the device. For example, two fluids will enter the exchanger at the same side and travel parallel each other for the whole process.
The counter-flow exchange, on the other hand, is the opposite of the first process. Here, fluids will enter the device from different ends and meet each other for the process of heat exchange. Many heat exchangers use this flow since it has been proven to be the more effective of the two processes because it can transfer more heat from the heating medium to the other. In this set-up, the mediums travel to one another and are then processed by the heat exchanger.
Traditionally, exchangers are designed in a way that the surface area between the two exchanging fluids is maximised whilst minimising the resistance to the exchange flow at the same time. Additional fins installed in either direction where the fluids enter can also enhance heat exchangers. These fins can add to the surface area of the exchangers whilst also helping control the flow of fluids during the exchange process.
Temperature during the Heat Exchange Process
Depending on the size of the exchanger, temperature will vary during the exchange process. The temperature will also vary according to the position of the device. But many industries that use heat exchangers almost always have their own defined mean temperature.
This temperature is usually defined in terms of the Log Mean Temperature Difference or the LMTD. Sometimes though the temperature is still hard to determine through the LMTD method, in this case, the NTU method is then used.
Types of Heat Exchangers
There are several types of heat exchangers used today. These include shell tube exchangers, plate exchangers, adiabatic wheel, plate fin, fluid exchangers, dynamic scraped surface, phase-change exchangers, HVAC air coils, spiral exchangers and the direct contact exchangers.
About the Author
For more information about heat exchangers and its different types, you can visit plate heat exchangers
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Building Heat Exchangers
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TOYOSTOVE LASER 72 HEAT EXCHANGER – USED. $99.00 |
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40 Plate Brazed Water Outdoor Heat Exchanger, 4″ x 12″, 1″ MNPT $235.00 |
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PRO-FAB HEAT HANDLER WATER TO AIR HEAT EXCHANGER HOT WATER CIRCULATOR $813.10 |
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PRO-FAB HEAT HANDLER WATER TO AIR HEAT EXCHANGER HOT WATER CIRCULATOR $945.40 |
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PRO-FAB HEAT HANDLER WATER TO AIR HEAT EXCHANGER HOT WATER CIRCULATOR $1,228.90 |
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B3-23A 12.4″ x2.9″ 40 Plate Stainless Steel Heat Exchanger Copper Brazed Furnace $169.00 |
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B3-23A 12.4″ x2.9″ 40 Plate Stainless Steel Heat Exchanger Copper Brazed Furnace $169.00 |
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B3-23A 12.4″ x2.9″ 40 Plate Stainless Steel Heat Exchanger Copper Brazed Furnace $169.00 |
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B3-23A 12.4″ x2.9″ 40 Plate Stainless Steel Heat Exchanger Copper Brazed Furnace $169.00 |
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B3-23A 12.4″ x2.9″ 40 Plate Stainless Steel Heat Exchanger Copper Brazed Furnace $169.00 |
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B3-23A 12.4″ x2.9″ 40 Plate Stainless Steel Heat Exchanger Copper Brazed Furnace $169.00 |
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20.7″x4.4″ 30 Plate Heat Exchanger SS304 Copper Brazed $379.50 |
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20.7″x4.4″ 30 Plate Heat Exchanger SS304 Copper Brazed $379.50 |
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20.7″x4.4″ 90 Plate Heat Exchanger Stainless Steel Copper Brazed B3-52A Water $779.00 |
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B3-95A 24.3″x7.5″ 60 Plate Stainless Steel Heat Exchanger Copper Brazed Coolant $999.00 |
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B3-95A 24.3″x7.5″ 60 Plate Stainless Steel Heat Exchanger Copper Brazed Coolant $999.00 |
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Venmar REPLACEMENT FILTER Heat Exchanger 00864 CH30110 12-3/4″ x 11-1/2″ x 3/8″ $18.12 |
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20 Plate Heat Exchanger for Outdoor Boiler, Hot Water $115.00 |
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30-plate Heat Exchanger, 3″ x 8″, 3/4″ MNPT, 316L $109.95 |
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20-plate Heat Exchanger, 3″ x 8″, 3/4″ MNPT, 316L $84.95 |
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Plate(type) Stainless-steel, MPN(marine) 10-plate Water-to-Water heat exchanger $660.00 |
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Plate(type) Stainless-steel, MPN(marine) 24-plate Water-to-Water heat exchanger $1,037.00 |
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Plate(type) Stainless-steel, MPN(marine) 40-plate Water-to-Water heat exchanger $1,425.00 |
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Plate(type) Stainless-steel, MPN(marine) 50-plate Water-to-Water heat exchanger $1,905.00 |
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Lasko 6101 Lasko Heat Exchanger $232.82 |
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OUTDOOR WOOD FURNACE BOILER/POOL HEAT EXCHANGER 1.2M t $2,399.00 |
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Broan Guardian Plus Venmar WHOLE HOUSE AIR EXCHANGER WITH HEAT RECOVERY HR2.6 $813.75 |
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Venmar AIR EXCHANGER STANDARD WALL CONTROL 11136 PRO225 accessory heat recovery $51.34 |
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COMBO II ADD SECONDARY HEAT EXCHANGER (Water Jacket) $1,500.00 |
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Lasko Heat Exchanger 6101 $225.93 |
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250 Liter Solar Water Heater Tank Copper Coil Heat Exchanger Gas Electric Backup $975.00 |
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400 Liter Solar Water Heater Tank Copper Coil Heat Exchanger Gas Electric Backup $1,425.00 |
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Central Boiler Plate Heat Exchanger & Fittings Kit for Domestic Water Heater $241.95 |
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New Carrier Heat Exchanger Kit 320723-751 $84.99 |
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10-plate Heat Exchanger, 3″ x 8″, 3/4″ MNPT, 316L $55.00 |
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Forced Air Heat Exchanger 16 x 16 120,000 BTU $100.00 |
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Forced Air Heat Exchanger 16 x 18 125,000 BTU $90.00 |
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Forced Air Heat Exchanger 22 x 25 200,000 BTU $140.00 |
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Forced Air Heat Exchanger 18 x 20 145,000 BTU $100.00 |
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Forced Air Heat Exchanger 12 x 12 60,000 BTU $75.00 |
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Forced Air Heat Exchanger 20 x 20 175,000 BTU $125.00 |
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Forced Air Heat Exchanger 19 x 20 150,000 BTU $125.00 |
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Forced Air Heat Exchanger 18 x 18 135,000 BTU $100.00 |
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Outdoor Wood furnace boiler heat exchanger 16×18 $284.00 |
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OUTDOOR WOOD FURNACE TITANIUM POOL HEAT EXCHANGER 210 $596.00 |
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210,000 BTU Titanium Pool & Spa Heat Exchanger $596.00 |
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360,000 BTU Titanium Pool & Spa Heat Exchanger $999.00 |
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OUTDOOR WOOD FURNACE TITANIUM POOL HEAT EXCHANGER 360 $999.00 |
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85k BTU Pool Heat Exchanger Outdoor Furnace Boiler $199.00 |
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155k BTU Pool & Spa Heat Exchanger $229.00 |
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600,000 BTU Pool & Spa Heat Exchanger $489.00 |
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1.2 m BTU Pool & Spa Heat Exchanger $739.00 |
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600,000 BTU Titanium Pool & Spa Heat Exchanger FOR central boiler $1,899.00 |
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210,000 BTU Pool & Spa Heat Exchanger $284.00 |
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11.25″ x 4.5″ 20 Plate Heat Exchanger Stainless Steel Copper Brazed B3-32A Water $179.00 |
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11.25″ x 4.5″ 20 Plate Heat Exchanger Stainless Steel Copper Brazed B3-32A Water $179.00 |
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11.25″ x 4.5″ 20 Plate Heat Exchanger Stainless Steel Copper Brazed B3-32A Water $179.00 |
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Drainback solar water heater 10 gallon drain back tank Heat Exchange Inside KIT $699.00 |
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Rinnai heat exchanger for MN REU-V1616W-US $100.00 |
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10 Plate Water to Water Brazed Plate Heat Exchanger with Installation Bracket $117.00 |
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20 Plate Water to Water Brazed Plate Heat Exchanger with Installation Bracket $167.40 |
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16×16 Water to Air Heat Exchanger Furnace Boiler Wood Stove – 80,000 BTU/hr $129.95 |
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16X16 OUTDOOR WOOD BOILER, FURNACE HEAT EXCHANGER (AIR TO WATER HEAT EXCHANGER) $128.95 |
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16×18 Water to Air Heat Exchanger Furnace / Boiler/ Wood Stove up to 100,000 BTU $141.95 |
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11.25″ x 4.5″ 40 Plate Heat Exchanger Stainless Steel Copper Brazed B3-32A Water $292.00 |
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11.25″ x 4.5″ 40 Plate Heat Exchanger Stainless Steel Copper Brazed B3-32A Water $292.00 |
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WOOD/ COAL STOVE HEAT EXCHANGER $0.99 |
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HEAT EXCHANGER for NATATORIUM/ SWIMMING POOL ! MF-135 $320.00 |
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Carrier Heat Exchanger Insulation Kit 48TJ660-002 $49.99 |
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Venmar AIR EXCHANGER WITH HEAT RECOVERY REPLACEMENT FILTER 02422 40500 40225 $19.07 |
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18×18 Water to Air Heat Exchanger $133.20 |
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PROTECH AE-63533-02 RHEEM HEAT EXCHANGER 152283 $60.00 |
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14×14 Water to Air Heat Exchanger for Outdoor Boiler/Furnace/Stove, 70,000 Btu $135.00 |
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18×18 Water to Air Heat Exchanger Furnace / Boiler/ Wood Stove up to 120,000 BTU $143.00 |
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20×20 Water to Air Heat Exchanger – Outdoor Boiler/Furnace/Stove, 160,000 BTU $184.95 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $128.95 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $143.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $187.50 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $150.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $148.50 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $142.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $110.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $169.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $142.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $134.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $199.00 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $178.95 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $144.95 |
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OUTDOOR WOOD FURNACE / STOVE/ BOILER HEAT EXCHANGER / AIR TO WATER/ WATER TO AIR $179.00 |
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Forced air heat exchanger SERCK $45.00 |
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outdoor wood furnace side arm water to water heat exchanger $119.99 |
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Brazed 90 Plate Outdoor Wood Furnace Heat Exchanger $406.00 |
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Goodman/Amana 2521301S Heat Exchange . Sub $149.99 |
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80 Gallon Solar Hot Water Tank with Double Coil/Heat Exchanger Model FST080D $1,295.00 |
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120 Gallon Solar Hot Water Tank with Double Coil/Heat Exchanger Model FST120D $1,785.00 |
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Solar Pool Heat Exchanger- Stainless Steel -SP-300K $100.00 |
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Installation kit for water to air heat exchangers $29.70 |
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24×24 Water to Air Heat Exchanger With Install Kit $296.10 |
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MONITOR HEATER HEAT EXCHANGER 6121 NEW! $103.99 |
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PROTECH/RHEEM AS-63533-02 SINGLE CELL HEAT EXCHANGER $33.00 |
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Breville BES900XL Semi Automatic Espresso Machine $1,199.95 Commercial features and performance, in a domestic footprint. Espresso perfection requires precision temperature and pressure control, consistently, every time. At the heart of this machine is its dual stainless steel boiler heating system with electronic PID temperature control. The dedicated espresso boiler is adjustable (190°-205°F) for different bean roasts and origins, while a separate ste… |
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B3-12A 30 Plate Beer Wort Chiller 3/4 MPT x 1/2 MPT Homebrew $87.95 “Dimensions L: 7.5″” W: 2.9″” Heat Transfer Area/Plate 0.012 m²/plate (.14 ft²/plate) Thickness of plates 0.3 mm (.0118″”) Max Flow Rate 66.6 L/min (17.6 gpm) Channel Capacities 0.018L/channel (.004756 gal/channel) Design pressure 1.0 Mpa (145 psi) Test Pressure 2.0 Mpa (290 psi) Design Temperature -195°C to +220°C (-319°F to 430°F) Refrigeration Capacity 1-5KW (3400-17,000 BTU/hour… |
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Vogelzang Top Barrel Adapter Kit, Model# BK50E $29.99 Adapts Item# 16160 into a double barrel stove kit for greater heating efficiency. By mounting the additional barrel, secondary gases are trapped creating greater efficiency as they travel through the top chamber. Includes 2 legs and 2 collars. Barrels not included.This item is not for sale in the state of California and Washington. Customers are responsible for checking local codes and regulations… |
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Whirlpool 4210463RW Multi-Use Cleaning Brush for Refrigerators and Dryers $5.90 … |
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LG Heat / Cool Window Air Conditioner with Remote – 12000 BTU $384.00 This LG (LW1210HR) 12000 BTU window room air conditioner with remote and plasma heat exchanger features multiple fan speeds, auto restart, and an Energy Saver button allowing the fan and compressor to turn off when the desired temperature is reached. A fresh air vent circulates outdoor air into the room. This heat and cool window air conditioner is good for a room size of up to 22 x 25 ft! With a… |
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Panasonic FV-04VE1 WhisperComfortTM Spot ERV Ceiling Insert Ventilator with Balanced Ventilation and Patent-Pending Capillary Core $609.00 Panasonic WhisperComfort Spot Energy Recovery Ventilator (ERV) offers a revolutionary way to provide balanced ventilation with a ceiling insert ERV. Affordable and easy to install WhisperComfort is energy efficient and provides fresh ventilated air while maintaining indoor air quality. Professional Features:-Grill Size (inches Sq.) 20 3/4\ x 16-3/4\ -Sone 0.8 -Mounting Opening (Inches Sq.) 19-1/2\… |
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30 Plate Heat Exchanger, B3-12A 3/4 MPT $85.00 SS304 has good general corrosion resistance to a range of organic and in-organic fluids. It will have poor resistance to sulfuric and hydrochloric acids. Crevice corrosion may also occur when chlorides (salts) are present in the fluid. Since chlorides are in all natural sources of water it is best to use distilled water whenever possible. typically, a unit will last about 10 years with regular tap… |
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TRACH-VENT Heat and Moisture Exchanger (HME), Pedi Trach Vent Gibeck, (1 EACH) $10.59 TRACH-VENT Heat and Moisture Exchanger (HME), Pedi Trach Vent Gibeck – (1 EACH) – Designed specifically to provide comfort and humidification for tracheostomy patients or intubated, spontaneously breathing patients. The TRACH-VENT weighs only 4.0 grams and has a dead space of just 10 ml. Recommended for tidal volumes of 50 ml and above, TRACH-VENT can be used on both pediatric and adult patients. … |
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Antec Kuhler H2O 620 Liquid CPU Cooler System $57.00 SpecificationsMfr Part Number: KUHLER H2O 620CPU Socket Compatibility: Intel LGA 775/1155/1156/1366 & AMD Socket AM2/AM2+/AM3/AM3+Fan Speed: 1450~2000 RPMTubing Length: 330 mm / 13.0″”Fan Dimensions: 4.7 x 1.0 x 1.1 inch / 120.0 x 25.0 x 27.0 mmRadiator Dimensions: 4.7 x 1.1 x 5.6 inch / 120.0 x 27.0 x151.0 mmWeight: 1.5 lbs / 0.7 kg… |
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Corsair Cooling Hydro Series H50 All in One High-performance CPU Cooler CWCH50-1 $79.99 The Corsair CWCH50-1 Hydro H50 CPU Liquid Cooler gives you the power of liquid cooling in a compact, easy-to-install package. You get superior cooling for higher overclocking performance without the complexity of traditional liquid-cooling systems. The Corsair CWCH50-1 Hydro H50 CPU Liquid Cooler includes mounting brackets for Intel LGA775 and LGA1366 socket motherboards. Air-based CPU coolers sim… |
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