Enerquip Thermal Solutions is excited to attend the ILTA 2026 Conference & Trade Show June 15-17, 2026, in Houston, Texas. Hosted by the International Liquid Terminals Association (ILTA), this premier liquid terminal industry event brings together terminal operators, engineers, EPC firms, manufacturers, and industry leaders focused on improving terminal operations, safety, efficiency, and reliability.
As one of the leading trade shows for the bulk liquid storage and terminal industry, ILTA 2026 will feature the latest innovations in terminal equipment, thermal processing systems, storage technologies, and operational solutions for petroleum, chemical, renewable fuel, and industrial processing applications.
Visit Enerquip at Booth 1850
Stop by Booth 1850 to meet the Enerquip team and learn more about our custom-engineered thermal processing equipment designed for demanding industrial applications.
Our equipment is designed to help facilities improve:
Process heating efficiency
Product temperature control
Energy performance
Operational reliability
System longevity and maintainability
Whether you’re planning a new terminal project, upgrading existing equipment, or troubleshooting thermal performance challenges, our team is ready to help.
Connect with Enerquip at ILTA 2026
If you’re attending ILTA 2026 in Houston, make plans to visit Booth 1850 and discuss your current projects and future operational goals with our team.
Learn more about the ILTA 2026 Conference & Trade Show at ilta.org.
When evaluating industrial heating equipment—such as boilers, pressure vessels, and heat exchangers—you’ll often encounter a range of codes and standards like ASME, ASTM, ANSI, and API. Understanding what these certifications mean is essential for making informed purchasing decisions, ensuring safety, and meeting regulatory requirements.
Two of the most commonly referenced standards in this space are ASME and ASTM. While they are closely related and often used together, they serve very different purposes. Here’s a clear, evergreen breakdown of how they compare—and why both matter.
What Is ASME Code?
ASME stands for the American Society of Mechanical Engineers, a globally recognized nonprofit organization that develops codes and standards for the engineering industry.
One of its most important contributions is the ASME Boiler and Pressure Vessel Code (BPVC). This code governs the:
Design
Fabrication
Inspection
Testing
of boilers and pressure vessels used across industries like chemical processing, food production, and energy.
Why ASME Code Matters
ASME standards are primarily focused on safety and structural integrity. Equipment that carries an ASME code stamp has undergone rigorous inspection and meets strict engineering requirements.
For buyers and operators, this means:
Reduced risk of equipment failure
Compliance with safety regulations
Greater confidence in long-term performance
In many jurisdictions, ASME compliance is not just recommended, it’s required.
What Is ASTM Code?
ASTM International (formerly the American Society for Testing and Materials) develops technical standards for materials, products, systems, and services.
Unlike ASME, ASTM does not govern how equipment is built. Instead, it focuses on what materials are made of and how they perform.
These standards are widely used by manufacturers to ensure consistency and quality in the materials they select.
Important Note
ASTM does not enforce compliance. Its standards are often adopted by other codes (like ASME) or regulatory bodies, which then make them mandatory.
ASME vs. ASTM: What’s the Difference?
Although ASME and ASTM frequently work together, their roles are distinct. Here’s a simple way to think about it:
ASME = How equipment is designed and built
ASTM = What materials are used to build it
Feature
ASME Code
ASTM Standards
Focus
Equipment design & construction
Material quality & properties
Applies To
Boilers, vessels, piping systems
Metals, alloys, and other materials
Enforcement
Enforced via inspections/regulations
Not enforced directly
Certification
ASME code stamp
Material certifications
Primary Goal
Safety & structural integrity
Material performance & consistency
How ASME and ASTM Work Together
In practice, these standards are often used in tandem.
For example:
A pressure vessel may be designed and built according to ASME BPVC
The materials used (like steel plates or tubing) must meet ASTM specifications
However, not all ASTM-approved materials are suitable for ASME applications. Engineers must carefully select materials that meet both ASTM standards and ASME requirements.
Why These Standards Matter for Buyers
If you’re purchasing industrial heating equipment, understanding these codes can help you:
Ensure compliance with industry regulations
Verify material quality and durability
Reduce operational risks
Avoid costly downtime or safety incidents
Bottom line: Look for equipment that meets ASME code requirements and is built using ASTM-compliant materials.
Need Help Choosing the Right Codes and Standards?
Navigating industry standards, especially when balancing industrial performance with sanitary requirements, can be complex.
Contact our team today to discuss your application. We’ll help you select or design equipment that meets the right combination of ASME, ASTM, and sanitary standards for your specific process and industry.
If you need a reliable and efficient way to heat liquids in a tank, bayonet immersion heaters are a widely used solution. Known for their simplicity and effectiveness, these heaters are used across many applications, from small systems to large-scale operations.
This guide explains what bayonet heaters are, how they work, and why they are a practical choice for fluid heating.
What Is a Bayonet Immersion Heater?
A bayonet immersion heater is a heating unit made up of a removable tube bundle that is inserted directly into a liquid-filled tank or vessel. The design allows the heater to be installed and removed through a manway or access opening without draining the tank.
These heaters are used to warm or maintain the temperature of various fluids, including:
Water
Oils and lubricants
Heat transfer fluids
Chemicals and solutions
Food-grade liquids
Because the heater operates inside the fluid, it provides direct and efficient heat transfer.
How Do Bayonet Heaters Work?
Bayonet heaters are built as a tube bundle that is inserted directly into a tank through a manway or tank opening. Once installed, the bundle extends into the stored liquid, allowing heat to transfer from the tubes into the surrounding material.
Here is a simple breakdown of how they function:
The bayonet heater tube bundle is inserted into the tank through a manway or access opening
The heating medium or heating elements generate heat inside the tube bundle
Heat transfers through the tube walls into the liquid in the tank
Natural convection or tank circulation helps distribute the heat throughout the material
Because the tube bundle is immersed in the tank, bayonet heaters provide direct, efficient heat transfer for maintaining or raising fluid temperature.
Common Applications
Bayonet immersion heaters are used anywhere consistent liquid heating is required. Common applications include:
Water heating systems
Oil and lubricant storage tanks
Chemical processing tanks
Food and beverage production
Energy and thermal fluid systems
Their flexibility makes them suitable for both general-purpose and specialized heating needs.
Benefits of Bayonet Immersion Heaters
Energy Efficiency – Direct immersion reduces heat loss and helps lower energy consumption.
Versatility – They can be used with a wide range of fluids and operating conditions.
Reliable Temperature Control – Bayonet heaters provide consistent, even heating, which supports stable processes and product quality.
When Should You Use a Bayonet Heater?
A bayonet immersion heater is a strong choice when you need to:
Heat or maintain the temperature of liquid stored in a tank
Achieve efficient, direct heat transfer
Minimize downtime with accessible maintenance
Use a flexible solution across multiple applications
If your process requires heating only during fluid transfer, other equipment, like a suction heater, may be more appropriate.
Choosing the Right Tank Heating Solution
Bayonet immersion heaters offer a practical balance of efficiency, simplicity, and serviceability. Their removable tube bundle design and strong heat transfer capabilities make them a dependable solution for a wide range of tank heating applications.
When comparing heating options, it is important to evaluate how bayonet heaters stack up against alternatives like circulation heaters or heat exchangers based on your specific process requirements.
Whether you are upgrading an existing system or designing a new one, selecting the right heating solution plays a key role in long-term performance and reliability.
Contact us to discuss your application and find the best solution for your needs.
In industries where product purity and safety are critical such as food, beverage, pharmaceuticals, cannabis, and personal care, equipment design plays a major role. Understanding sanitary and high-purity standards is not just about compliance. It is about protecting consumers, ensuring consistent quality, and building a future-ready operation.
This guide explains the key standards that govern sanitary processing equipment and how to apply them effectively.
Why Sanitary Standards Matter
Sanitary design ensures equipment can be cleaned easily, resists contamination, and maintains product integrity. As regulations evolve and consumers become more informed, businesses must adopt stricter standards to stay competitive.
Ignoring proper standards can lead to:
Product contamination
Regulatory penalties
Damage to brand reputation
Higher long-term costs
Designing equipment with the right standards from the start helps avoid expensive upgrades and compliance issues later.
Core Principles of Sanitary Equipment Design
Material Selection – Stainless steel is the preferred material across sanitary industries because it is durable, corrosion-resistant, and easy to clean. Other materials like carbon steel or aluminum may degrade or introduce contaminants under certain conditions.
Surface Finish – Smooth surfaces are essential for hygiene. A lower surface roughness reduces the risk of bacteria buildup and makes cleaning more effective.
Cleanability – Equipment should be designed to eliminate dead zones where product or cleaning fluids can collect. Proper drainage improves sanitation and reduces downtime.
What Are cGMP Standards?
cGMP stands for current Good Manufacturing Practices. It is a broad term that refers to guidelines ensuring products are consistently produced and controlled according to quality standards.
Because cGMP is not a single defined standard, it is important to understand exactly which codes and practices a manufacturer follows when they claim compliance.
TEMA Standards for Heat Exchangers
The Tubular Exchanger Manufacturers Association, or TEMA, provides detailed guidelines for designing and building shell and tube heat exchangers.
These standards define:
Material thickness
Weld quality
Component sizing
Thermal design best practices
Following TEMA helps ensure consistency, reliability, and performance across equipment. Learn more.
Full traceability through registration and documentation
This code applies to equipment such as heat exchangers, evaporators, and pressure vessels.
CRN Certification for Canada
If equipment is used in Canada, it must meet CRN requirements.
This includes:
Engineering review by provincial authorities
Approval before fabrication
Certification valid for up to 10 years
While it can add time to the design process, it ensures compliance with Canadian safety regulations.
Applying the Appropriate Standards
Now that you have a better understanding of what standards apply to the equipment used in sanitary applications, you’ll need to apply the appropriate standards to your process equipment. Most systems require a combination of standards depending on the application.
For example:
Food and beverage systems often require 3-A and ASME compliance
Pharmaceutical systems typically require ASME-BPE and pressure vessel code compliance
Heat exchangers often follow TEMA along with sanitary standards
Working with an experienced manufacturer helps ensure the correct standards are applied from the beginning. Learn more about the high-purity industries we serve including Food, Cannabis, Personal Care, and Pharmaceuticals.
Future-Proofing Your Equipment
Regulations and consumer expectations will continue to evolve, making it essential to design equipment with higher standards from the start. Taking a proactive approach helps you stay compliant, avoid costly upgrades, and build long-term operational efficiency.
At the same time, sanitary and high-purity equipment standards play a critical role in protecting product quality, improving performance, and meeting regulatory requirements. By understanding and applying the right standards, you not only reduce risk but also strengthen customer trust in how your products are made and handled.
Need Help Selecting the Right Standards?
If you are unsure which standards apply to your process, consulting with an experienced equipment provider can help you avoid costly mistakes and ensure compliance.
Reach out today to evaluate your system and make sure your equipment meets the highest sanitary and safety standards.
Shell and tube heat exchangers are one of the most widely used heat transfer technologies across industries, including chemical processing, energy production, food manufacturing, and pharmaceuticals.
Their popularity comes from a simple advantage. They provide efficient and reliable heat transfer for a wide range of fluids, temperatures, and operating conditions.
In this guide, you will learn how shell and tube heat exchangers work, their key components, benefits, and common applications.
What Is a Shell and Tube Heat Exchanger?
A shell and tube heat exchanger is equipment designed to transfer heat between two fluids without allowing them to mix. One fluid flows through a series of tubes, while the other flows around those tubes inside a sealed outer shell.
This design supports precise temperature control in both heating and cooling applications. It is suitable for industrial systems as well as sanitary environments like food processing and pharmaceutical production.
Core Design and Components
Although configurations vary depending on the application, most shell and tube heat exchangers include the same core components:
Baffles: Improve heat transfer by guiding flow across the tubes
Tube sheets: Secure the tubes and keep fluids separated
In sanitary applications, these components are typically made from corrosion resistant materials such as stainless steel and designed for easy cleaning.
How Shell and Tube Heat Exchangers Work
The operating principle is consistent across industries:
One fluid flows through the tubes
The second fluid flows through the shell around the tubes
Heat transfers through the tube walls
Both fluids exit separately at different temperatures
Because the fluids remain separated, these heat exchangers are ideal for applications where contamination must be avoided.
Fixed tube sheet: Best for clean fluids and simple applications
U-tube: Handles thermal expansion well and suits high temperature systems
Floating head: Easier to clean and maintain, useful for fouling fluids
Sanitary designs may also include clean-in-place compatibility and polished internal surfaces.
Key Benefits
High Efficiency – These exchangers are designed to maximize heat transfer while minimizing energy use.
Versatility – They are used in a wide range of industries, including oil and gas, food processing, pharmaceuticals, HVAC, and power generation.
Customization – They can be designed for different pressures, temperatures, and material requirements.
Maintenance Flexibility – Many designs allow for easy disassembly, which simplifies cleaning and repairs.
Strong Performance in Demanding Conditions – They handle high pressure and high temperature applications effectively.
Common Applications
Industrial Processing – Used to heat, cool, or condense fluids in manufacturing and chemical systems.
Food and Beverage – Supports processes like pasteurization and temperature control while maintaining hygiene standards.
Pharmaceutical and Biotech – Provides precise and controlled temperature management for sensitive products.
HVAC and Refrigeration – Used in chillers and condensers to regulate temperature efficiently.
When Is a Shell and Tube Heat Exchanger the Right Choice?
This type of heat exchanger is a strong fit when you need:
Efficient heat transfer between two fluids
Separation to prevent contamination
Flexibility across temperatures and pressures
A design that can be adapted for sanitary or industrial use
There combination of efficiency, flexibility, and durability makes them a practical choice for both industrial and sanitary applications.
Ready to Choose the Right Heat Exchanger?
If you are evaluating heat exchanger options, the best choice depends on your specific process, materials, and performance goals. Speaking with an expert can help you identify the right configuration and improve system efficiency. Contact us today.
If your boiler stack is too hot to stand near, that heat isn’t just uncomfortable, it’s money leaving the facility.
Most fuel-fired equipment releases a large portion of its energy through flue gas or exhaust streams. That wasted thermal energy adds up fast, especially in plants running long hours or operating year-round.
The difference between economizers vs. waste heat recovery heat exchangers
Where waste heat recovery works best across industries
Payback expectations and key design considerations
How to choose the right solution for your process
What Is Waste Heat Recovery?
Waste heat recovery is the process of capturing heat from exhaust gas, flue gas, or hot process streams, then transferring it into a useful medium such as:
water
thermal fluid
glycol mixtures
process air
boiler feedwater
Instead of dumping high-value heat into the atmosphere, waste heat recovery equipment helps you reuse it for tasks like:
generating steam or supporting boiler load
preheating boiler feedwater or makeup water
heating process fluids
preheating combustion air
space heating or absorption cooling
Waste Heat Economizer vs. Waste Heat Recovery Heat Exchanger: What’s the Difference?
These two terms get grouped together a lot, but they serve slightly different purposes and are often applied to different equipment.
Waste Heat Economizers
A waste heat economizer captures heat from flue gas and transfers it into:
boiler feedwater
process water
combustion air (in some designs)
Best fit for:
boilers
thermal fluid heaters
fired heaters
furnaces and ovens
thermal oxidizers (recover oxidizer exhaust heat to preheat combustion air, process air, or generate hot water/steam)
Main benefit: Reduce fuel consumption by lowering the load on the primary heater or boiler. In thermal oxidizer applications, recycle high-temperature exhaust heat back into the process to help reduce burner demand while maintaining stable operating conditions and compliance performance.
Waste Heat Recovery Heat Exchangers
A waste heat recovery heat exchanger transfers energy from any of the following into a secondary fluid or process loop. They are often used when exhaust streams are too hot or too valuable to waste, and when the recovered heat can be tied directly into an existing hot water, thermal oil, or steam system.
engine exhaust
turbine exhaust
hot process vents
hot liquid discharge streams
Best fit for:
generator sets
gas turbines
incinerators
dryers
kilns
refinery and petrochemical processes
Main benefit: Turn waste heat into usable energy for steam, hot water, thermal oil heating, or process preheat.
Where Waste Heat Recovery Equipment Makes Sense (Across Industries)
Waste heat recovery isn’t a niche strategy. It’s widely used in energy-intensive industries where hot exhaust streams are consistent and fuel costs matter.
Common industries include:
chemical and petrochemical
refining
food and beverage
pulp and paper
cement and aggregates
steel and metals
glass
asphalt
general manufacturing
power generation and utilities
Practical Applications by Industry
Here are real-world examples of how waste heat economizers and waste heat recovery heat exchangers are applied in industrial plants:
Refining & Petrochemical
Fired heaters, furnaces, and process vents generate high-temperature flue gas. Waste heat economizers and heat exchanger-based recovery systems can:
preheat boiler feedwater
preheat process feeds
support steam generation
reduce heater firing rates
Result: fuel savings, reduced CO₂ emissions, and improved thermal efficiency.
Food & Beverage
Ovens, dryers, boilers, and fryers often run long hours. Waste heat recovery can support:
washdown water heating
boiler makeup water preheat
process hot water loops
space heating in production areas
Result: strong payback potential due to high runtime and consistent heat loads.
Pulp & Paper
Paper mills generate significant heat from recovery boilers, kilns, and dryer systems. Waste heat recovery units can help:
reduce boiler load
stabilize dryer air temperatures
improve process heating efficiency
Result: improved energy performance without interrupting production flow.
Cement & Aggregates
Kilns and dryers produce a steady exhaust stream. Waste heat recovery systems can:
preheat combustion air
support drying operations
reduce fuel demand during continuous runs
Result: better fuel efficiency and improved operating stability.
Steel & Metals
Furnaces and reheating ovens produce extreme waste heat. Depending on the exhaust stream, recovery systems can:
preheat combustion air
heat process water loops
support facility hot water demands
Result: reduced fuel consumption and improved process control.
Power Generation (Engines and Turbines)
Generator sets and turbines release a major portion of energy through exhaust. Exhaust gas heat exchangers can:
generate hot water or steam
preheat process fluids
provide facility heating
Result: better energy utilization and reduced fuel use per output.
Asphalt and Thermal Fluid Heating Operations
This is a strong fit for waste heat economizers and thermal fluid-compatible waste heat recovery units.
Typical applications include:
preheating combustion air to boost burner efficiency
reheating thermal fluid used for tank heating, piping, and storage
supporting Warm Mix Asphalt systems using recovered heat
Result: reduced thermal fluid heater load, improved efficiency, and better temperature control.
ROI and Payback: What to Expect
Payback varies by application, but in many industrial environments, waste heat recovery projects often fall in the 1 to 5 year range.
how much heat can be reused (and what it replaces)
maintenance requirements and fouling potential
system integration complexity
Fastest payback typically occurs when:
equipment runs long hours (multi-shift or continuous operation)
exhaust temperatures are consistently high
recovered energy replaces fuel-fired heating or steam generation
Non-Monetary Benefits Plant Teams Care About
Even when fuel savings drive the ROI, waste heat recovery often improves operations in ways that matter day-to-day:
reduced burner cycling
improved process temperature stability
increased boiler capacity without adding a new boiler
lower cooling demand (less wasted heat dumping)
reduced thermal stress on fired equipment
lower emissions by reducing fuel use
These benefits can improve reliability and process control — two things that matter just as much as dollars.
Design Considerations: What Engineers Need to Size the Right System
Whether you’re installing a waste heat economizer or a waste heat recovery heat exchanger, good sizing depends on good data.
Here’s what your equipment supplier typically needs:
1) Exhaust or Flue Gas Conditions
temperature range (min / normal / max)
flow rate
fuel type and combustion products
particulate loading or contaminant risks
2) Target Heat Sink
what will absorb the heat? (water, thermal fluid, glycol, air)
inlet/outlet temperatures
pressure requirements and controls
3) Pressure Drop Limits
Exhaust systems and burners often have strict allowable pressure drop. Designing within those limits is critical.
4) Materials and Corrosion Resistance
Flue gas composition and dew point can drive corrosion. Stainless steel and other corrosion-resistant materials are often used depending on conditions.
5) Maintenance and Cleaning Access
If your system is prone to fouling, design choices should support:
inspection access
cleaning capability
removable bundles or access doors
appropriate drain and vent points
Quick Feasibility Checklist
Want to estimate how much energy you can recover (and what the payback could look like)? Gather these basics:
🔲 Exhaust / flue gas temperature range
🔲 Exhaust flow rate (or equipment model & size)
🔲 Fuel type and current fuel cost
🔲 Operating hours per year
🔲 What you want to heat (water, thermal fluid, combustion air, etc.)
🔲 Any known fouling or corrosion concerns
With this information, an equipment supplier can quickly estimate recoverable energy and help determine the best option for your plant.
Ready to Put Your Waste Heat to Work?
Waste heat economizers and waste heat recovery heat exchangers can significantly reduce energy costs and improve efficiency, especially when they’re properly sized and integrated.
At Enerquip, we design and manufacture industrial heat exchanger solutions for demanding service conditions, including waste heat recovery systems, economizers, and custom heat exchanger designs built for your process.
Waste heat recovery isn’t one-size-fits-all. Systems must balance heat transfer, pressure drop, and long-term serviceability, which is why engineered heat exchangers often outperform off-the-shelf solutions in demanding industrial environments.
Want a quick feasibility check? If you can share stack temperature, operating hours, fuel type, and what you want to heat, we can help estimate recoverable energy and payback.
Join us April 28–30, 2026 at the Rosen Shingle Creek Hotel in Orlando, Florida, for one of the premier events dedicated to aboveground storage tank management. Hosted by the National Institute for Storage Tank Management (NISTM), this conference brings together terminal operators, engineers, regulators, manufacturers, and service providers focused on safety, compliance, and performance.
The Florida event features a free trade show, along with networking mixers, an industry golf tournament, and specialized courses like Tanks 101, Liquid Terminals 101, and the Aviation Fueling Master Class. It’s a practical, hands-on event designed to deliver real-world insight and valuable connections.
Enerquip will be on-site at booth #111 to showcase industrial thermal process equipment that supports aboveground storage tank operations, including tank coils and thermal fluid heaters. We work with operators across terminals, bulk storage facilities, and processing plants to deliver reliable, efficient, and long-lasting equipment built for demanding environments.
If you’re attending the conference and trade show, stop by and talk with us about your current projects and future plans. We’re always ready to help you keep operations running smoothly.
Enerquip Thermal Solutions is heading to INTERPHEX 2026 and we hope to see you there!
Join us April 21–23, 2026 at the Javits Center in New York City for one of the leading global events serving the pharmaceutical and biotechnology industries. You can find Enerquip in Booth #2867.
INTERPHEX brings together innovators, engineers, manufacturers, and industry leaders from across the entire pharmaceutical development lifecycle, from early-stage development to full-scale production and distribution. The event combines expert-led education sessions, valuable networking opportunities, and a show floor packed with advanced technologies shaping the future of pharma and biotech.
At Booth #2867, our team will be available to discuss pharma-grade shell and tube heat exchangers and vapor condensers designed to meet the strict demands of pharmaceutical processing. From precise temperature control and cleanability to pressure ratings and material traceability, Enerquip equipment is built to support compliance, efficiency, and long-term reliability.
Whether you’re scaling production, upgrading equipment, or designing a new system, we’re ready to talk through your goals and help you find the right solution.
Learn more about the education sessions and show floor features at interphex.com.
Enerquip is heading to CheeseExpo 2026, and we hope to see you there.
Join us April 14–16, 2026 at the Baird Center in Milwaukee, Wisconsin, where more than 4,000 dairy industry professionals will gather for one of the largest events dedicated to cheese, butter, whey, and cultured dairy processing.
You’ll find Enerquip at Booth 1615, where our team will be ready to discuss sanitary shell and tube heat exchangers and thermal solutions designed specifically for dairy applications. From pasteurization and whey processing to utility heat recovery and CIP systems, our stainless steel equipment is built to meet the strict hygiene and performance standards dairy processors depend on every day.
Whether you’re expanding capacity, improving energy efficiency, or planning a new facility, stop by to talk through your goals. We’re always happy to share insights and explore practical solutions tailored to your process.
Planning to attend? Learn more and register at cheeseexpo.org.
We’ll see you in Milwaukee!
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