Heat Exchange Skids for Industrial Heating & Cooling
ChannelVessel supplies custom heat exchange skids that integrate heat exchangers, piping, valves, instrumentation and controls into a factory-assembled package. Also called heat exchanger skid packages, these systems can include circulation pumps, insulation and utility-side equipment for industrial heating, cooling and heat recovery.
Tell us what flows through each circuit, the temperatures you need and the utilities available at your site. We build the proposal around those conditions, with the exchanger arrangement, control requirements and connection points clearly defined.
Complete Heat Exchanger Skid Packages—with a Clear Supply Boundary
A complete package starts with a clear agreement about what it includes. ChannelVessel can configure the thermal equipment, circulation, piping and controls around your process, while identifying the connections and services that remain with the plant.
A lower initial price may reflect missing pumps, control valves, insulation or documentation rather than an equivalent package.
Transfer heat between separate process and utility circuits using hot water, cooling water, chilled water or a compatible glycol solution. The package can use existing plant circulation or include dedicated pumps where the hydraulic arrangement requires them.
Combine the heat exchanger with steam regulation, instrumentation and a condensate-handling arrangement. Selection considers changing heat demand and condensate return conditions, not only the available steam supply.
Recover useful heat from an available stream and transfer it to a receiving process. Define when both streams are available, the required temperatures and the backup heating or cooling arrangement before assigning a recovery duty.
Create a circulation package with the required heat exchanger, pump, valves and temperature control. Expansion, pressurization, air removal, filling and draining provisions can be incorporated where the selected loop requires them.
Configuration and Specification Schedule
| Exchanger construction | Gasketed plate-and-frame, brazed plate, semi-welded plate, fully welded plate or shell-and-tube. |
|---|---|
| Thermal duty | Sized from process and utility conditions; calculated duties are project-specific rather than fixed standard capacities. |
| Flow rate | Minimum, normal and maximum flow specified separately for each circuit. |
| Operating conditions | Normal and expected operating pressures and temperatures on both sides. |
| Design conditions | Design pressure and temperature, including relevant differential-pressure, vacuum and upset cases. |
| Wetted materials | 304/316L stainless steel, suitable carbon steel, titanium, duplex or other specified alloys selected for the service. |
| Circulation | Existing plant pumps, dedicated skid-mounted pumps, duty/standby pumps or variable-speed operation. |
| Controls | Local control, PLC with operator interface, or an agreed interface to the plant control system. |
| Connections | Flanged, welded or hygienic connections with size, standard and orientation defined. |
| Installation | Indoor or outdoor arrangement, insulation and environmental protection as required. |
| Electrical interface | Site voltage, frequency, control power, signals and communication requirements. |
Heat Duty and Flow Rate: Start With the Energy Balance
A heat exchanger skid is sized from the required energy transfer, not from the dimensions of its frame. For steady, single-phase heating or cooling with approximately constant fluid properties, the first check is the energy balance.
This process needs approximately 465 kW of heat transfer. Selecting the exchanger still requires the utility temperatures and flow, allowable pressure drop, fluid properties, fouling allowance and operating range.
Assumes water density of approximately 1,000 kg/m³ and specific heat of approximately 4.186 kJ/(kg·K).
The final selection still depends on the hot-side temperature program, allowable pressure drop, fluid properties, fouling tendency, design pressure, materials and required operating range.
Water Flow Required for Selected Duties
These are independently calculated examples, not certified equipment ratings or standard model limits.
| Heat duty | Flow for a 10 K change | Flow for a 20 K change |
|---|---|---|
| 40 kW | 3.44 m³/h | 1.72 m³/h |
| 100 kW | 8.60 m³/h | 4.30 m³/h |
| 400 kW | 34.40 m³/h | 17.20 m³/h |
| 1,000 kW | 86.00 m³/h | 43.00 m³/h |
For glycol, thermal oil and concentrated solutions, use the actual fluid properties at the relevant temperatures.
Condensation and evaporation duties require an enthalpy balance, Q = ṁ × Δh, rather than only a sensible-temperature calculation.
Batch quantity, starting temperature, target temperature, heating time, vessel thermal mass and heat loss all affect the required duty.
Plate or Shell-and-Tube? Select for the Service, Not Just the Footprint
The exchanger construction determines how the package handles the fluids, cleaning requirements and mechanical design conditions. We select the arrangement around the service rather than assuming that the smallest exchanger is always the best choice.
Compact liquid duties, close temperature approaches and access to the heat-transfer surfaces.
Plate and gasket compatibility, channel dimensions, design limits and opening space. Extra plates still require available frame capacity and re-rating.
Compact assemblies for suitably clean and compatible fluids.
Brazing-alloy compatibility, filtration, pressure and temperature limits, and a cleaning method that does not require opening the plate pack.
Selected duties where welded passages reduce gasket exposure on one circuit.
Remaining gasket exposure, fluid routing and the cleaning method for each side.
Selected services requiring welded plate construction and compact heat-transfer area.
Construction-specific limits, inspection access, cleaning provisions and repair strategy.
Duties favoring tubular construction, selected metallurgy or specific mechanical requirements.
Fluid allocation, tube geometry, fouling, thermal expansion and whether the selected construction allows bundle removal or mechanical cleaning.
Suitable wide-gap or application-specific plate arrangements may be available depending on the particle size, concentration and cleaning strategy.
Accessibility depends on the actual construction, removable components and which fluid is assigned to the tube or shell side.
Temperature Approach Can Change the Size of the Same-Duty Skid
Two packages rated for the same heat duty can need different heat-transfer areas because their temperature driving forces differ. The closer the required outlet approaches the entering utility temperature, the more important the complete temperature program becomes.
When both terminal differences are equal, the LMTD equals that common temperature difference.
500 kW with a 10 K Minimum Terminal Difference
500 kW with a 2 K Minimum Terminal Difference
If the overall heat-transfer coefficient and configuration factor remain unchanged, the lower LMTD in Case B requires substantially more heat-transfer area. The 1.85 ratio isolates the effect of temperature driving force; it is not a guaranteed equipment-size or price multiplier.
Recovered heat is useful only when the receiving process can use it.
This figure represents gross transferred heat when both streams are available. Purchased-energy savings still depend on what the recovered heat replaces, the actual operating schedule, backup-system efficiency and additional pumping energy.
Budget Pressure Drop Across the Whole Circuit
The exchanger is only one source of hydraulic resistance. Valves, strainers, meters and connecting pipework also use the available pressure budget. Add losses along the same flow path, and calculate the hot and cold circuits separately.
These values explain the budgeting method. They are not recommended limits or standard skid ratings.
Specify where the pressure-drop limit applies.
Tell us whether your allowable pressure drop covers the exchanger alone, the skid from inlet to outlet, or the complete plant loop.
Skid loss is not automatically the required pump head.
Pump selection also considers external piping, elevation, available inlet conditions, suction requirements and the intended operating range.
Do not select a control valve only by line size.
The valve must have enough usable differential pressure and authority to regulate the actual circuit across the required operating range.
Check Minimum, Normal and Maximum Operation—not Only Full Load
The rated design point is only part of a temperature-control specification. Define the combinations of flow, inlet temperature, outlet target and utility conditions that the package will encounter in production.
Review full-load heat transfer, pressure losses and available utility capacity.
Check valve operating position, changed hydraulic conditions and temperature response.
Review equipment minimum-flow requirements, control resolution and circulation strategy.
A requirement for lower minimum load needs its own operating case, utility conditions, exchanger review and control assessment.
Define the conditions behind the temperature tolerance.
Initial equipment temperature, stored thermal mass and available utility conditions can change the required response.
Check summer and winter utility conditions where seasonal variation materially affects heat-transfer driving force.
The same controller can behave differently when the process load changes through flow, temperature or both.
Match the Control Strategy to the Thermal and Hydraulic System
Start with the variable that must be controlled: process outlet temperature, loop supply temperature, flow or another agreed condition. Then select the valves, circulation arrangement, instruments and control interface to support that objective.
Modulate the heating or cooling utility flow to control the selected process temperature.
Design checkRequired valve capacity, available differential pressure and usable operating range.
Mix streams or redistribute flow where the hydraulic arrangement requires a bypass or recirculation path.
Design checkValve function, location, branch balancing and the minimum flow required by the exchanger or pump.
Adjust circulation to a defined flow, differential-pressure or thermal-control objective.
Design checkPump operating range, equipment minimum flow and coordination with the temperature-control loop.
Regulate steam input while maintaining reliable condensate removal from the exchanger.
Design checkSteam-space pressure, condensate backpressure, drainage route and low-load operation.
Check the condensate return—not only the steam valve.
Condensate may discharge normally when enough differential pressure is available.
Pressure inside the exchanger can fall as the control valve closes.
Condensate drainage can become unreliable if the available pressure is too low.
Measure what the control logic actually depends on.
Low flow, excessive temperature, pump failure, sensor failure and loss of utilities can require different responses. Heating isolation, continued cooling and pump run-on should be treated as separate engineering decisions rather than one universal shutdown rule.
Specify the Entire Wetted Path—and Plan for Fouling
Material selection applies to everything the fluid touches, not only the heat-transfer surface. Review plates or tubes, piping, valves, pump parts, gaskets, seals and instrument connections against both the operating fluids and cleaning chemicals.
What is actually in the process fluid?
Provide fluid identity, concentration, known contaminants, pH and relevant chloride or corrosive species where applicable.
Design decision Select compatible alloys, gasket materials, seals and instrument wetted parts.Normal operation is not the only temperature condition.
Include startup, maximum operating temperature, cleaning temperature and relevant upset conditions.
Design decision Verify metals, elastomers, gasket compounds and seals across the full required temperature range.Particle size and fouling behavior influence the channel design.
Define suspended solids, fibers, crystals, scale tendency and precipitation risk where these can affect operation.
Design decision Choose passage geometry, filtration strategy, velocity and cleaning access accordingly.Do not specify only “stainless steel” and ignore the elastomers.
Process exposure, cleaning chemicals, temperature and replacement requirements all affect gasket and seal selection.
Design decision Specify the actual compound or approved compatibility requirement for the service.Sanitary construction requires more than a material grade.
Define product-contact surfaces, drainability, cleaning method, surface finish and documentation expectations.
Design decision Apply the required product-contact construction and inspection criteria to the relevant circuit.Plan the cleaning method before finalizing the skid layout.
Provide the required circulation, drain, vent and chemical-compatibility provisions for the selected equipment.
Reserve access to open plate packs, covers, channels or removable components without dismantling unrelated skid equipment.
Define lifting, isolation and withdrawal space for pumps, strainers, tube bundles or other serviceable components.
Fouling can reduce heat-transfer performance and may increase pressure drop, but the diagnosis should compare flow, temperatures, duty and differential pressure under comparable conditions before deciding on cleaning or replacement.
Define the Capacity That Must Remain After an Outage
A second pump or exchanger is useful only when it supports the required operating strategy. Start by defining the essential duty that must remain available while one item is out of service.
Equipment count alone does not define redundancy. Remaining duty depends on the rating of each unit, utility availability, flow distribution, isolation and the control sequence used during changeover.
Lowest installed capacity, but no equipment standby for the heat-transfer train.
Two units do not automatically provide full-duty standby when each is rated for only half the design duty.
Full-duty standby when the remaining train, utilities, piping and controls are all capable of supporting the design duty.
Two duty units plus one spare can maintain full nominal duty when flow distribution and controls support the arrangement.
Review shared components before calling the system redundant.
A standby pump can keep the loop moving after a pump failure, but it does not keep a single exchanger available while that exchanger is opened for cleaning.
Full exchanger standby requires enough remaining heat-transfer area and utility capacity to maintain the required process duty.
Manual isolation, automatic changeover, warm standby and immediate restart are different operating requirements.
The Installation Footprint Must Include Maintenance Access
Shipping dimensions show how the package moves to site. They do not show every space needed to operate, open or maintain it. Review the proposed skid in its actual installation area with the maintenance envelope and removal routes visible.
Check shipping modules, doorways, corridors, lifting points and transport restrictions.
Include the skid frame, connection zones, insulation and required operating access.
Include opening travel, component withdrawal paths, lifting access and working clearance.
Plate-pack opening travel, plate handling space, tightening-bolt access and room to remove plates safely.
Channel or head removal, full tube-bundle withdrawal path and the lifting or pulling arrangement needed for maintenance.
Motor, coupling, seal, casing or basket removal space with suitable isolation and room for safe servicing.
Manual operation, calibration, transmitter removal, actuator service and access to isolation points.
Door opening, cable access, ventilation and service space with protection from nearby hot, wet or leaking equipment.
Show the installer what connects, supports, drains and lifts.
Review external pipe support, alignment and thermal movement so field piping does not impose unassessed loads on exchanger nozzles, pump flanges or skid-mounted equipment.
Check how the largest removable component leaves the area.
Agree the Design Basis Before You Agree the Code List
A heat exchange skid can include pressure-retaining equipment, process piping, instruments, controls and electrical assemblies. The applicable requirements depend on what is inside the package, where it will be installed and what the purchaser specifies.
Match the requirement to the component it actually governs.
Applicable pressure-vessel rules, including ASME BPVC Section VIII where specified and within the contracted scope.
ASME Section VIIIASME B31.3 where applicable, including interconnecting piping within packaged process equipment assemblies.
ASME B31.3TEMA requirements can be applied where specified by the purchaser alongside the applicable pressure-vessel rules.
TEMAEvaluate the Pressure Equipment Directive and the applicable conformity route for the equipment or assembly being supplied.
EU Pressure Equipment DirectiveApply destination and project requirements for panel construction, hazardous-area classification, installed components and site interfaces.
Defined by project and destination requirementsThe governing requirement should follow the facility, service and piping-system scope rather than the presence of steam by itself.
Define the document package before fabrication starts.
Each group below can be agreed at quotation stage so there is no ambiguity at final handover.
Process & Thermal Design basis, heat balance and exchanger rating
Mechanical General arrangement and equipment definition
Piping & Controls P&ID, instrument list and control narrative
Electrical Panel, wiring and communication interfaces
Quality & Handover Inspection records and final project documents
Separate Fabrication Inspection, Functional FAT and Thermal Acceptance
The word “tested” should identify what was actually verified. Mechanical integrity, instrument logic and thermal performance are different acceptance activities and should have separate criteria.
Each layer answers a different question.
Materials, dimensions, connections, weld examination, installed equipment and cleanliness.
Test medium, pressure, duration, boundary and protected components are agreed before testing.
I/O checks, simulated signals, valve stroke, pump/VFD operation, alarms and agreed interlocks.
Requires agreed flow, temperatures, test utilities, stabilized conditions and measurement methods.
Final utilities, field connections, communications and commissioning responsibilities are confirmed on site.
Three common acceptance mistakes
A hydrostatic or pneumatic test verifies the defined pressure boundary. It does not demonstrate exchanger thermal capacity.
A simulated sensor input can prove logic and alarms without transferring actual process heat.
Some checks depend on final utilities, connected loads, field piping and the real plant control system.
Choose the verification route that fits the project.
Define flow, temperatures, stabilization, measurement accuracy and acceptance tolerance before the test.
Confirm which party supplies instruments, operating conditions, data collection and final acceptance records.
Combine the exchanger rating with agreed pressure, mechanical and functional verification without claiming a thermal test that did not occur.
The final data package should identify completed inspections, unresolved site checks, as-built documentation, operating instructions and any acceptance activities that remain after shipment.
Heat Exchange Skids for Different Process Duties
The industry identifies the context; the actual fluids and operating conditions define the equipment. ChannelVessel configures heat exchange skid packages around the process duty, utility conditions, materials, controls and maintenance requirements of each application.
Reaction loops, process heating, cooling and heat recovery
Selection focuses on fluid compatibility, fouling behavior, changing thermal loads and the consequences of a temperature excursion.
Process cooling, utility interfaces and recovery duties
Define the mechanical design basis, normal and upset conditions, maintenance access and required availability before selecting the package arrangement.
Temperature control for oil, glycol and utility circuits
The enquiry should define viscosity, contamination, installation environment, area classification and the duty that must remain during maintenance or an outage.
Product or utility-side heating and cooling
Product-contact service requires explicit hygienic, surface-finish, drainability and cleaning requirements; stainless steel alone does not define a sanitary system.
Controlled process temperature and clean utility interfaces
Define which circuit contacts the process together with cleaning, traceability and any validation-support documentation required by the project.
Cooling and temperature-control loops for energy equipment
Identify the actual coolant, cleanliness requirements, equipment interfaces and availability targets rather than applying one generic configuration to every application.
The final skid still needs fluid properties, flow, temperatures, pressure-drop limits, utilities, control objectives and project requirements before the exchanger and package can be selected.
Heat Exchange Skid Questions—and the Data Needed for a Quote
You do not need a completed engineering package to start an enquiry. Send the process information you already have, identify unknown values and let the remaining design inputs be clarified during technical review.
What buyers usually need to confirm before ordering
What is included in a heat exchange skid?
Is a heat exchange skid the same as a chiller?
Can the same nominal kW rating cover different temperatures?
How close can the outlet temperature get to the utility temperature?
Does every package need a skid-mounted pump?
Do two exchangers provide full standby capacity?
Does FAT prove the actual heat-transfer capacity?
What affects the price and delivery schedule?
Add these inputs when they are available
These details reduce assumptions during exchanger sizing, pump selection and control design.
Turn Your Process Conditions Into a Defined Skid Package
Send your operating data and drawings to ChannelVessel. We can develop a proposal covering the thermal basis, exchanger arrangement, pump and control scope, site interfaces and agreed inspection or acceptance requirements.