From plugging a single tube, to the removal of deposits by chemical cleaning, to rebuilding units from the ground up, Quintel offers heat exchanger repair services to suit each customer and situation. Our 25 plus years of experience in the reconditioning and repair of heat exchangers is on your side when it comes to performing quality work on your vital equipment. Our work also provides the same warranties as would apply to equipment direct from an OEM, and our customers can enjoy them at a fraction of the cost. And should repair of your heat exchange equipment not be the most cost-effective solution in your case, we will be the first to tell you.
Every unit that leaves our shop is guaranteed against leaks. A full set of NDT procedures are performed as appropriate to each vessel, including air testing of the tubes and the complete assembly, a vacuum test, a hydro test, as well as an inspection by borescope to detect corrosion. Our chart recorders ensure that test results are saved and can be utilized in preventative maintenance evaluations. All test results (along with the unit history) and any videos/DVDs produced will be supplied to the customer for their records.
As ASME-code heat exchanger repairers, our shop carries an R stamp, certifying our shop in the repair of and/or alteration of those pressure vessels, as well as boilers, and other pressure-retaining items.
Quintel is also an authorized service provider for Alfa Laval Inc., one of the leading global providers of Plate Heat Exchangers. They are characterized by their compact design and high thermal efficiency. We have completed detailed training in the techniques used to properly restore Alfa Laval Exchangers and have many years of experience working on all different types and sizes of these plate/frame exchangers. As a certified provider of Alfa Laval exchangers, Quintel is able to offer new exchangers or existing exchangers that have been restored to new condition.
So, whether your situation calls for a heat exchanger retubing, a heat exchanger air or water cleaning, an ultrasound cleaning, or a complete heat exchanger rebuild, contact us to get the job done right.
Below is a sampling of the kinds of heat exchangers and equipment that Quintel can repair, recondition and rebuild:
Shell and Tube Heat Exchangers
Heat Exchange Tube Bundles
Air Cooled Heat Exchangers
Marine Heat Exchangers
Water Pump Forced Air Heat Exchangers
Water To Air Heat Exchangers
Water Coil Heat Exchangers
Stainless Steel Heat Exchangers
Turbine Oil Coolers
Aftercoolers and Innercoolers
Corrosion Resistant Exchangers
Heat Exchange Tube Bundles
Boiler Feed Pump Oil Cooler
XLE Compressor Inner Cooler
Air Compressor After Cooler
Main Turbine Oil Cooler
Heating and Cooling Coils
Cored Inner Cooler
Plate and Frame
Generator Hydrogen Cooler
A heat exchange tube bundle is a core component comprising tubes supported by tube sheets within a shell. These tubes facilitate the transfer of heat between fluids, a process integral to numerous industrial applications. However, the efficiency of heat exchangers diminishes over time due to factors such as corrosion, scaling, erosion, and wear. Continual repair and maintenance are imperative to address these issues. Corrosion-resistant materials, regular inspections, and cleaning routines are vital for preventing degradation. Additionally, monitoring, testing, and proactive measures contribute to the longevity, efficiency, and safety of heat exchange tube bundles, ensuring their optimal performance in diverse settings.
Plate exchangers, also known as plate heat exchangers, are highly efficient devices used to transfer heat between two separate fluids in a compact and versatile manner. They consist of stacked, corrugated metal plates with intricate channels that allow the fluids to flow through. Their exceptional efficiency arises from the large surface area and close plate proximity, enabling rapid and efficient heat exchange. These heat exchangers find extensive use in industrial, commercial, and residential applications, catering to a wide range of fluid viscosities and temperature differences. Their compact design, ease of maintenance, and adaptability make them a cost-effective choice for applications such as HVAC systems, refrigeration, and industrial processes, where heat transfer is essential for temperature control and energy efficiency.
Overall, plate exchangers offer a versatile and space-saving solution for heat exchange needs, promoting effective energy use and cost savings in various sectors.
Air exchangers, also known as heat recovery ventilators (HRVs) or energy recovery ventilators (ERVs), are mechanical ventilation systems designed to exchange stale indoor air with fresh outdoor air while retaining heat or coolness in the process. They consist of heat exchangers and fans to ensure efficient and controlled airflow. Air exchangers help maintain indoor air quality by removing pollutants, excess humidity, and odors, while simultaneously improving energy efficiency by transferring heat or coolness from the outgoing air to the incoming air. These systems are commonly used in residential and commercial buildings to provide a constant supply of fresh air, enhance comfort, and reduce energy consumption.
Air-cooled heat exchangers (ACHEs) are specialized heat exchangers used to dissipate heat from industrial processes or equipment using ambient air as the cooling medium. They consist of finned tubes or coils through which hot fluid (such as oil, water, or gas) flows, while a fan or fans blow ambient air over the tubes to carry away the heat. ACHEs are widely employed in situations where a liquid cooling system, like a water-cooled exchanger, may not be practical or cost-effective. They are commonly used in refineries, power plants, chemical processing plants, and other industrial applications to cool processes and machinery efficiently, reducing the reliance on water resources and offering a compact and self-contained cooling solution.
Marine heat exchangers are specialized heat exchange systems designed for use in marine vessels and offshore applications. They play a crucial role in cooling and temperature regulation within a marine environment. These heat exchangers typically use seawater or freshwater as the cooling medium, and they exchange heat between the ship's internal systems, such as engines, generators, or HVAC systems, and the surrounding water. By dissipating excess heat from onboard equipment, marine heat exchangers ensure optimal performance, prevent overheating, and contribute to the efficient operation of vessels, making them essential components in the maritime industry.
Hydrogen coolers are specialized heat exchangers used in power generation facilities, particularly in generators and turbines that operate with hydrogen as a cooling medium. These coolers are essential for maintaining the proper temperature of electrical generators and turbines, as they transfer excess heat away from the equipment to prevent overheating. Hydrogen, with its high thermal conductivity, is an efficient cooling medium for these high-power applications. Hydrogen coolers typically consist of heat exchanger tubes through which hydrogen gas circulates to absorb and dissipate heat. They are crucial for ensuring the safe and efficient operation of power generation systems and are commonly used in the energy industry.
A system that utilizes a water pump to circulate water through a heat exchanger that, in turn, uses a fan or forced air to exchange heat with the surroundings. This system is used for heating or cooling purposes, depending on the direction of heat exchange, and can be applied in various settings, including HVAC systems, industrial processes, or renewable energy systems, where the transfer of heat between water and air is required.
Air-to-air exchangers, also known as heat recovery ventilators (HRVs) or energy recovery ventilators (ERVs), are ventilation systems designed to exchange indoor air with fresh outdoor air while simultaneously recovering heat or coolness. They consist of heat exchangers that allow the transfer of thermal energy between the outgoing and incoming air streams. In cold weather, the system captures heat from the exhaust air and uses it to pre-warm the incoming fresh air, improving energy efficiency and reducing heating costs. Conversely, in hot weather, it can transfer cooler air to reduce the need for air conditioning. Air-to-air exchangers enhance indoor air quality by constantly refreshing the air while maintaining temperature and humidity levels, making them valuable components for residential and commercial HVAC systems.
Water-to-air heat exchangers are devices that facilitate the exchange of thermal energy between a water-based fluid, such as hot water or glycol, and air. These heat exchangers consist of coils or pipes through which the liquid circulates, with a fan or blower passing air over the coils to either heat or cool the air, depending on the application. They are commonly used in HVAC systems, including hydronic heating and cooling systems, as well as in refrigeration systems. Water-to-air heat exchangers efficiently transfer heat between fluids and air, making them essential for temperature control in various residential, commercial, and industrial settings, helping maintain comfortable indoor environments and improve energy efficiency.
Water coil heat exchangers are components used in HVAC (Heating, Ventilation, and Air Conditioning) systems to transfer heat between a liquid, often water or a water-glycol mixture, and air. They consist of coils or pipes through which the liquid circulates and air is blown over them, allowing for the exchange of thermal energy. These heat exchangers are integral to both heating and cooling systems, helping regulate indoor temperatures efficiently. In heating applications, they warm the air by transferring heat from the liquid to the air, while in cooling, they cool the air by absorbing heat from the air and transferring it to the liquid. Water coil heat exchangers are prevalent in commercial and residential HVAC systems and play a crucial role in maintaining comfort and energy efficiency.
Stainless steel heat exchangers are heat transfer devices constructed primarily from stainless steel, a durable and corrosion-resistant alloy. These heat exchangers are designed to efficiently transfer thermal energy between two different fluids, such as liquids or gases, without compromising the integrity of the material. The corrosion-resistant nature of stainless steel makes these heat exchangers ideal for applications involving aggressive or corrosive environments, including those in the chemical, pharmaceutical, food processing, and HVAC industries. They offer a long service life, excellent heat transfer efficiency, and resistance to rust and degradation, making them a reliable choice for a wide range of industrial and commercial applications where durability and hygiene are essential.
Turbine oil coolers are specialized heat exchangers used to manage the temperature of lubricating oil in gas or steam turbines, ensuring their efficient and reliable operation. These coolers dissipate excess heat generated during turbine operation, helping to maintain the oil within an optimal temperature range. Turbine oil coolers typically use air or water as the cooling medium, and they are designed to withstand high temperatures and pressures commonly found in turbine systems. By regulating oil temperature, these coolers contribute to prolonging the life of turbine components and enhancing overall operational performance in power generation, aviation, and industrial applications.
Aftercoolers and intercoolers are both types of heat exchangers used in various applications. An aftercooler, also known as an aftercooler heat exchanger, is typically used in air compression systems, such as those in industrial air compressors or superchargers. It cools the compressed air after it leaves the compressor, reducing its temperature and removing moisture, which is important for downstream processes and equipment.
On the other hand, an intercooler is employed in internal combustion engines, often in turbocharged or supercharged setups. It cools the air that's been compressed by a turbocharger or supercharger before it enters the engine's cylinders. This denser and cooler air results in increased engine efficiency and power output.
Both aftercoolers and intercoolers play vital roles in optimizing the performance and efficiency of the systems they are integrated into, ensuring that the compressed or boosted air is at the right temperature and condition for subsequent processes or combustion.
Corrosion-resistant heat exchangers are specialized devices designed to withstand and protect against the corrosive effects of aggressive environments, such as those involving chemicals, high humidity, or seawater. These heat exchangers are constructed from materials and coatings that are highly resistant to corrosion, ensuring their durability and long service life in challenging settings. They are commonly used in industries such as chemical processing, petrochemical, marine, and wastewater treatment, where the potential for corrosive damage to heat exchange equipment is significant. Corrosion-resistant heat exchangers provide a reliable means to efficiently transfer heat while maintaining structural integrity and safety in harsh conditions, contributing to the longevity and effectiveness of industrial processes and systems.
Heat exchange tube bundles are essential components within shell-and-tube heat exchangers, a common type of heat transfer equipment. These bundles consist of a series of tubes that run through the interior of a cylindrical shell. One fluid, typically a hot or cold liquid, flows through the tubes, while another fluid, often a gas or liquid, surrounds the exterior of the tubes. This arrangement allows for efficient heat exchange between the two fluids, making them valuable in applications like heating, cooling, or condensing. Tube bundles come in various configurations and materials to suit different temperature, pressure, and corrosion resistance requirements. Their design and construction play a pivotal role in optimizing heat transfer efficiency in a wide range of industrial processes and HVAC systems.
A boiler feed pump oil cooler is an integral component in power plants and industrial boiler systems. Its primary function is to cool and regulate the temperature of the lubricating oil used in the feed pumps that supply water to boilers. These coolers are essential for maintaining the proper operating temperature of the oil, ensuring lubrication efficiency and the longevity of the pump's mechanical components. The cooler typically employs heat exchange principles, with cooling water or air circulating around tubes or coils that contain the warm pump oil, effectively dissipating excess heat. By preventing oil overheating, boiler feed pump oil coolers contribute to the reliable and efficient operation of feed pumps and the overall performance of boiler systems in large-scale power generation and industrial settings.
The XLE Compressor Inner Cooler is a specialized intercooler designed for use in gas compressors. An intercooler is used to cool the air between stages of a compressor to improve its efficiency. The XLE Intercooler is designed for specific applications, used to reduce the temperature of compressed air, ensuring that it remains within the desired range for optimal compressor performance.
An air compressor aftercooler is a vital component in air compression systems, typically used in industrial and commercial settings. After the initial compression stage, where air gets significantly heated, the aftercooler cools down the compressed air. It operates as a heat exchanger, usually employing a set of tubes or coils that allow cooling water or air to flow over them. This cooling process is crucial because it helps reduce the temperature of the compressed air, preventing excessive heat from entering downstream equipment and processes. Cooler, denser air is more efficient and less likely to cause damage or excess wear to pneumatic tools, machinery, or other applications that rely on compressed air. In addition to temperature control, aftercoolers also aid in moisture removal from the compressed air, contributing to improved air quality and equipment longevity.
A U-bend heater is a type of electric heating element designed in a U-shaped configuration, typically made from materials like metal or ceramic. These heaters are used in a variety of industrial, commercial, and residential applications where localized or distributed heating is required. The U-bend design allows for efficient heat distribution, and they are commonly used in processes like air and liquid heating, space heating, and in various industrial heating equipment. U-bend heaters can be customized to suit specific temperature and size requirements, making them versatile and adaptable for different heating needs. They are known for their reliability and effectiveness in achieving precise and controlled heating in a wide range of applications.
A main turbine oil cooler is a critical component in power generation facilities, particularly those with steam turbines. It is designed to regulate and maintain the temperature of the lubricating oil used in the turbine's main bearings and other vital components. This cooler prevents overheating of the oil, which can lead to equipment damage and operational issues. Typically, it utilizes a heat exchanger system, allowing a cooling medium, often water, to circulate around the tubes or coils containing the hot oil, dissipating excess heat. By controlling the oil temperature, the main turbine oil cooler ensures the efficient and reliable operation of steam turbines, contributing to the stability and longevity of power generation systems.
An oxygen cooler is a specialized heat exchanger used in industrial and medical applications where gaseous oxygen needs to be cooled. These coolers play a crucial role in liquefying oxygen for storage and transportation, as well as in various processes that require oxygen at low temperatures. Oxygen coolers typically utilize a heat exchange system to transfer heat away from the oxygen gas, cooling it down to extremely low temperatures, often approaching the point of liquefaction. This is essential for applications like medical oxygen supply, industrial gas production, and cryogenic processes. Oxygen coolers are designed to meet strict safety and quality standards to ensure the purity and reliability of the cooled oxygen, making them vital components in many industrial and healthcare settings.
Heating and cooling coils are integral components in HVAC (Heating, Ventilation, and Air Conditioning) systems. These coils consist of finned tubes or pipes through which hot or cold fluids, such as water or refrigerants, circulate to either heat or cool the surrounding air. In heating mode, hot fluid passes through the coils, warming the air that flows over them, while in cooling mode, cold fluid extracts heat from the air, providing cooling. Heating and cooling coils are commonly used in air handling units and heat pumps to regulate indoor temperatures efficiently. They are vital for maintaining comfortable and controlled environments in residential, commercial, and industrial spaces, offering a versatile and effective solution for climate control.
A graphite block is a solid piece of material made from graphite, a form of carbon known for its exceptional thermal and electrical conductivity, as well as its high-temperature resistance. These blocks are often used in various industrial applications where extreme temperatures and corrosive environments are common. Graphite blocks are prized for their ability to withstand harsh conditions, making them ideal for use in equipment like furnaces, crucibles, electrodes, and as a structural component in high-temperature industrial processes. They are renowned for their durability, resistance to thermal shock, and their role in efficiently conducting heat and electricity in demanding applications.
A plate and frame heat exchanger is a type of compact heat exchanger used for efficient heat transfer between two fluids, typically liquid or gas, while keeping them separated by a series of corrugated metal plates. These plates are sealed together with gaskets to create alternating channels for the hot and cold fluids. During operation, heat is transferred from one fluid to the other through the thin metal plates. Plate and frame heat exchangers are known for their high heat transfer efficiency, compact design, and versatility in various applications, such as HVAC systems, refrigeration, chemical processing, and food industries. They are favored for their cost-effectiveness, ease of maintenance, and ability to handle a wide range of flow rates and temperature differentials.
A generator hydrogen cooler is a crucial component in power plants that use hydrogen as a cooling medium for large electrical generators. It serves to manage and maintain the temperature of the hydrogen gas, which circulates around the stator windings and rotor to dissipate excess heat generated during electricity production. By regulating the hydrogen's temperature, the cooler ensures the efficient operation and longevity of the generator. Typically, these coolers employ a heat exchanger system where cooling water or air is circulated to extract heat from the hydrogen gas. This process helps maintain the generator's optimal operating conditions, ensuring reliable and efficient electricity generation in power plants.
Cost Savings With Our Repair Services
Our heat exchanger repair services provide numerous advantages in industrial and commercial settings. These services offer cost savings by extending the lifespan of existing equipment, making it a more economical choice than purchasing new heat exchangers. Repairing and maintaining heat exchangers also enhance efficiency, reduce downtime, and ensure compliance with safety and regulatory standards. Moreover, these services have environmental benefits by reducing the need for new production and conserving resources, making them a sustainable choice. Contact Quintel today to learn how to help your business optimize your heat exchange systems, leading to improved performance and reduced operational costs.
At Quintel, we are capable of handling all your maintenance and repair needs. The following are some examples of how we can help your business operate at maximum efficiency:
Heat Exchanger Retubing: This involves replacing or refurbishing the tubes inside a heat exchanger. Over time, these tubes can become worn, corroded, or clogged, affecting the heat exchanger's efficiency. Retubing can extend the life of the heat exchanger and restore its performance.
Heat Exchanger Air or Water Cleaning: This process focuses on cleaning the external surfaces of the heat exchanger, either by blowing air or using water. These methods remove dust, dirt, or other contaminants that can accumulate on the heat exchanger's outer surface and hinder heat transfer. Cleaning helps maintain or improve its efficiency.
Ultrasound Cleaning: Ultrasound cleaning is a highly effective method for removing stubborn contaminants like scale, fouling, or deposits from the internal surfaces of heat exchanger tubes. Ultrasonic waves create pressure changes that dislodge and clean the tube interiors, improving heat transfer efficiency.
Complete Heat Exchanger Rebuild: A complete rebuild involves a comprehensive overhaul of the heat exchanger. It may include replacing worn-out components, retubing, cleaning, and addressing any structural or mechanical issues. A rebuild aims to restore the heat exchanger to like-new condition, maximizing its performance and lifespan.
These processes are essential for maintaining heat exchangers, ensuring they operate efficiently, and preventing costly breakdowns or replacements. The specific method chosen depends on the condition of the heat exchanger and the maintenance needs of the system it serves.