20–50 HP Industrial Water-Cooled Chillers
APT 20–50 HP industrial water-cooled chillers are configurable process cooling systems for injection molding, plastic extrusion, die casting, thermal spray, electroplating, chemical process cooling, hydraulic systems, and factory equipment. Compressor type, condenser, evaporator, pump, tank, refrigerant, voltage, control system, and water circuit materials can be configured according to actual process load, condenser water conditions, coolant type, and installation requirements.
When Should You Choose a 20–50 HP Water-Cooled Chiller?
A 20–50 HP industrial water-cooled chiller is suitable when a medium-to-large production process needs stable chilled-water cooling and the site has a cooling tower, condenser water loop, or plant cooling water system. It is commonly reviewed for injection molding, extrusion, die casting, thermal spray, electroplating, chemical process cooling, hydraulic cooling, process tanks, and factory equipment where continuous operation, efficiency, and indoor heat rejection control are important.
Where This 20–50 HP Series Fits in the APT Water-Cooled Chiller Range
This page covers the 20–50 HP configurable industrial water-cooled chiller range under the APT water-cooled chiller category. It sits between medium water-cooled equipment chillers and larger centralized water-cooled chiller systems.
Small Water-Cooled Process Chiller
Compact equipment, laboratory systems, point-of-use cooling, and indoor machines with available plant water.
View Small Series → Medium Range5–20 HP Medium Water-Cooled Chiller
Medium process cooling for injection molding, plating, laser, and factory equipment.
View 5–20 HP → Current Series20–50 HP Industrial Water-Cooled Chiller
Configurable water-cooled process cooling for continuous industrial applications and medium-to-large heat loads.
Current Page → Large SystemsLarge Water-Cooled Chiller System
50+ HP and centralized chilled-water systems for plant cooling and large production lines.
View Large Systems → CustomCustom Water-Cooled Chiller
Custom design for stainless circuits, special fluids, chemical areas, control logic, and special safety requirements.
Review Custom →20–50 HP Water-Cooled Chiller Capacity Direction Matrix
Use this table for preliminary direction only. Final model selection requires chilled-water and condenser-water side information.
| Model Direction | Reference Cooling Capacity | Typical Applications | Key Selection Point | Next Step |
|---|---|---|---|---|
| 20 HP | Approx. 50–60 kW reference | Injection molding, die casting, process tanks, thermal spray auxiliary loops | Heat load, chilled-water temperature, condenser water temperature, pump flow | Request 20 HP Review → |
| 25 HP | Approx. 60–75 kW reference | Electroplating, plastics, hydraulic systems, process cooling loops | Cooling tower capacity, condenser water quality, duty cycle | Request 25 HP Review → |
| 30 HP | Approx. 75–90 kW reference | Plastic extrusion, chemical process cooling, production line cooling | Flow rate, pump pressure, heat load margin, condenser water loop | Request 30 HP Review → |
| 40 HP | Approx. 100–120 kW reference | Die casting, thermal spray, continuous industrial cooling | Continuous operation, water treatment, heat exchanger type | Request 40 HP Review → |
| 50 HP | Approx. 125–150 kW reference | Centralized small-to-medium process cooling, multi-point chilled-water loop | System layout, external tank, pump head, condenser water flow | Request 50 HP Review → |
Configurable Water-Cooled Chiller Architecture
This 20–50 HP range should be treated as a configurable platform rather than a fixed standard machine. Each major subsystem is selected according to process load, condenser water condition, coolant type, pump requirement, installation layout, and safety requirement.
Compressor Platform
Scroll, semi-hermetic, or multi-compressor directions can be reviewed based on cooling capacity, operating schedule, stability expectation, and service strategy.
Water-Cooled Condenser
Shell-and-tube condenser configuration is reviewed according to condenser water temperature, flow, quality, and cleaning access requirement.
Evaporator / Process Heat Exchanger
Shell-and-tube, plate, or tank-coil direction depends on process fluid, chilled-water quality, fouling risk, and maintenance preference.
Pump & Tank Arrangement
Built-in tank, external tank, no-tank layout, standard pump, high-flow pump, high-pressure pump, and dual-pump arrangements can all be reviewed.
Control Panel & Protection
Digital controller, PLC, HMI, alarm logic, interlock signals, and protection strategy are selected according to automation level and site standards.
Water Circuit Material & Safety Review
Standard, stainless, corrosion-resistant, and project-specific safety arrangements are evaluated by fluid compatibility, environment, and compliance needs.
Condenser Water & Cooling Tower Requirements
A water-cooled chiller requires stable condenser water from a cooling tower or plant cooling water loop. Before selection, condenser water inlet temperature, outlet temperature, water flow, water quality, filtration, pipe distance, pressure drop, and condenser maintenance access should be reviewed.
Condenser Water Temperature
Review inlet and outlet temperature, seasonal variation, and maximum summer condition before determining condenser sizing margin.
Cooling Tower Capacity
Cooling tower capability should match heat rejection requirement, duty cycle, and simultaneous equipment load when multiple systems share the loop.
Water Quality & Treatment
Scale, fouling, corrosion, filtration, and water treatment directly affect condenser reliability and long-term efficiency.
Piping, Flow & Maintenance Access
Pipe length, pressure drop, strainer arrangement, and cleaning access should be reviewed during preliminary system layout.
Configuration Options Matrix
| Configuration Item | Available Options | Selection Logic |
|---|---|---|
| Compressor | Scroll / semi-hermetic / multiple compressors | Selected by cooling capacity, target temperature, duty cycle, and reliability requirement |
| Condenser | Shell-and-tube water-cooled condenser | Selected by condenser water temperature, flow, water quality, and cleaning requirement |
| Evaporator | Shell-and-tube / plate / tank coil | Selected by process fluid, water quality, flow rate, and maintenance need |
| Water Tank | Built-in / external / no tank | Selected by system volume, temperature stability, and installation layout |
| Pump | Built-in / external / high-flow / high-pressure / dual pump | Selected by flow rate, pressure loss, pipe distance, and equipment resistance |
| Control | Digital / PLC / touchscreen / remote alarm | Selected by automation and monitoring requirement |
| Voltage | 380V / 3PH / 50Hz or customized | Selected by destination country and site power supply |
| Refrigerant | R410A / R407C / R134a / project-specific | Selected by temperature range and system design |
| Water Circuit | Standard / stainless / corrosion-resistant | Selected by coolant type, water quality, and corrosion risk |
| Chemical / Corrosion Review | Optional / customized | Requires process fluid, material, and secondary loop review |
| Explosion-Proof Requirement | Custom project review | Should be directed to custom chiller solutions |
Technical Specification Table
| Parameter | Typical Range / Options | Engineering Notes |
|---|---|---|
| Cooling Capacity | 20–50 HP platform / project-specific capacity direction | Final output depends on chilled-water and condenser-water conditions |
| Chiller Type | Industrial water-cooled process chiller | Configured according to application, load profile, and site layout |
| Cooling Medium | Water / glycol / DI water / reviewed process fluid loop | Fluid compatibility and corrosion risk should be reviewed first |
| Chilled-Water Temperature | Project-specific / by engineering review | Required leaving and return temperature affect compressor and evaporator direction |
| Condenser Water Requirement | Cooling tower or plant water loop required | Condenser water temperature, flow, and quality are key inputs |
| Compressor | Configurable by duty and capacity direction | Selected by stability, runtime, and service strategy |
| Water-Cooled Condenser | Shell-and-tube direction | Cleaning access and water treatment are part of selection review |
| Evaporator | Shell-and-tube / plate / tank coil | Depends on process fluid, maintenance need, and fouling risk |
| Pump System | Standard / high-flow / high-pressure / dual pump | Matched to pipe loss, flow target, and equipment resistance |
| Water Tank | Built-in / external / no tank | Selected by loop volume and temperature stability requirement |
| Control System | Digital / PLC / touchscreen / remote monitoring | Depends on plant integration and alarm logic requirement |
| Voltage | 380V / 3PH / 50Hz or project-specific | Adjusted to destination country and site power condition |
| Refrigerant | R410A / R407C / R134a / reviewed alternative | Chosen by system design and operating temperature range |
| Protection | Standard industrial protection or project-specific protection logic | May include flow protection, high-pressure protection, and alarm interlock review |
| Installation | Indoor equipment room / process utility area / reviewed layout | Pipe routing, maintenance access, and condenser side connection should be checked |
| Customization | Configurable / by engineering review | Do not treat this page as a fixed standard catalog machine |
Application Fit Matrix
| Application | Fit Level | Typical Requirement | Engineering Review |
|---|---|---|---|
| Injection Molding Cooling | High | Mold temperature stability, hydraulic oil cooling, continuous cycle support | Machine tonnage, flow rate, return temperature, central loop arrangement |
| Plastic Extrusion Cooling | High | Extruder barrel and process water cooling with long running duty | Heat load fluctuation, chilled-water target, pump head, and flow balance |
| Die Casting Cooling | High | Mold cooling, oil cooling, process water support in foundry conditions | Ambient temperature, scale control, tower capacity, and system runtime |
| Thermal Spray Cooling System | High | High-load torch, plasma, or HVOF auxiliary water loop cooling | Flow stability, heat spikes, pump pressure, and backup margin |
| Electroplating Cooling | Conditional | Bath temperature control and production stability | Corrosion risk, secondary heat exchanger need, material review, pump material |
| Chemical Process Cooling | Conditional | Reactor, condenser, solvent, or process loop cooling | Fluid compatibility, corrosion, secondary loop design, safety classification |
| Hydraulic System Cooling | High | Oil temperature stabilization for presses and industrial equipment | Oil-side heat exchanger direction, flow control, and temperature tolerance |
| Industrial Heat Exchanger Cooling | High | Process-side heat removal for custom cooling circuits | Approach temperature, plate or shell-and-tube direction, and cleaning need |
| Factory Process Cooling Loop | High | Multi-point chilled-water supply for workshop process equipment | Distribution layout, external tank volume, redundancy, and total load diversity |
Suitable vs Not Suitable Conditions
Suitable For
- Medium-to-large process cooling
- Factory with cooling tower or condenser water loop
- Continuous production operation
- Indoor equipment room or plant cooling system
- Injection molding, extrusion, die casting, and process tanks
- Multi-point chilled-water loop
- Pump, tank, evaporator, and control customization
- Projects requiring higher heat rejection stability than air-cooled systems
Not Recommended For
- Sites without cooling tower or condenser water
- Small standalone equipment better served by compact chillers
- Outdoor quick installation where air-cooled is easier
- Poor condenser water quality without treatment
- Very corrosive fluids without material review
- Explosion-proof areas without custom safety design
- Projects requiring fixed catalog parameters without engineering review
Water-Cooled vs Air-Cooled Chiller Selection for 20–50 HP Projects
| Decision Factor | Water-Cooled 20–50 HP | Air-Cooled 20–50 HP |
|---|---|---|
| Heat Rejection | Handled through cooling tower or plant condenser water loop | Handled by ambient air through condenser fans |
| Installation | Better for indoor utility layout with available condenser-water infrastructure | Easier for standalone outdoor or quick-install projects |
| Cooling Tower Requirement | Required | Not required |
| Efficiency Direction | Often preferred for continuous factory duty with stable condenser water | Often preferred when infrastructure simplicity matters more |
| Maintenance | Requires condenser-water treatment and tower maintenance review | Requires condenser coil airflow and outdoor maintenance review |
| Best For | Centralized or continuous process cooling with indoor heat rejection control | Standalone installations without condenser water loop |
| Limitation | Not suitable when condenser water conditions are unavailable or unstable | May be less favorable for some continuous indoor utility layouts |
Project-Specific Engineering Options
Custom Voltage
Match export destination and site power supply.
Compressor Configuration
Review single or multi-compressor arrangement by duty profile.
Shell-and-Tube Condenser
Matched by condenser water temperature, flow, and cleaning requirement.
Evaporator Selection
Choose shell-and-tube, plate, or tank-coil direction by fluid and maintenance need.
Built-In or External Tank
Configured for loop volume, stability target, and piping layout.
Pump Flow and Pressure
Selected by pipe length, resistance, and process-side requirement.
Stainless / Corrosion-Resistant Circuit
Recommended when coolant compatibility or corrosion risk needs extra review.
PLC / HMI / Remote Alarm
Adjust control logic to plant monitoring and automation standards.
Secondary Heat Exchanger Review
Useful when direct process fluid contact is not suitable.
Custom Safety / Explosion-Proof Review
Special environments should be handled as custom engineering projects.
Quote Information Checklist
What APT Needs to Review
Sharing complete process and condenser-water information helps APT recommend the right 20 HP, 25 HP, 30 HP, 40 HP, or 50 HP water-cooled configuration faster and more accurately.
- Application or machine type
- Required cooling capacity or process heat load
- Chilled-water inlet and outlet temperature
- Chilled-water flow rate and pump pressure
- Coolant type: water, glycol, DI water, or special fluid
- Condenser water inlet and outlet temperature
- Cooling tower capacity or plant water loop conditions
- Condenser water flow rate
- Condenser water quality and filtration
- Voltage / phase / frequency
- Installation space and piping layout
- Tank requirement
- Control accuracy and alarm requirement
- Material requirement: stainless, anti-corrosion, special fluid
- Safety requirement: explosion-proof or chemical area
- Destination country
- Photos, drawings, existing chiller data
Related Water-Cooled Product Pages
Water-Cooled Chillers
Review the main water-cooled category before choosing a specific size direction.
View Category → Small RangeSmall Water-Cooled Process Chillers
Compact indoor process cooling with available condenser water.
View Small Range → Medium Range5–20 HP Medium Water-Cooled Chillers
Medium-capacity process cooling for machinery and utility support.
View 5–20 HP → Large SystemsLarge Water-Cooled Chiller Systems
Higher-capacity or centralized plant cooling directions.
View Large Systems → CustomCustom Chiller Solutions
Review custom design options for materials, safety, controls, and process fluid compatibility.
Review Custom Options →Related Air-Cooled Comparison Pages
Air-Cooled Chillers
Compare standalone air-cooled options when condenser-water infrastructure is unavailable.
View Air-Cooled Category → 20–50 HP Comparison20–50 HP Large Air-Cooled Chillers
Compare same-size air-cooled product direction for quick-install projects.
Compare 20–50 HP → Smaller Air-Cooled5–20 HP Industrial Air-Cooled Chillers
Review a smaller standalone air-cooled capacity range.
View 5–20 HP →Related Application Pages
Injection Molding Cooling
Review process cooling direction for mold temperature control and hydraulic loop stability.
View Application → ApplicationDie Casting Cooling
Explore heavy-duty process cooling direction for foundry and casting workshops.
View Application → ApplicationThermal Spray Cooling System
See cooling requirements for HVOF, plasma spray, and high-heat-load spray equipment.
View Application → ApplicationElectroplating Cooling
Review plating bath temperature control and corrosion-sensitive engineering points.
View Application → ApplicationChemical Process Cooling
Review reactor, condenser, and process-loop cooling with fluid compatibility considerations.
View Application → SupportParts & Heat Exchangers
See heat exchanger and component directions that support water-cooled chiller configuration.
View Support Page →Related Resource Pages
Chiller Selection Guides
Selection logic, comparison notes, and engineering buying guidance.
Open Guides → Resource CenterIndustrial Chiller Resources
Broader support content for industrial cooling systems and planning.
Open Resources → DownloadsDownloads
Brochures, documents, and downloadable support materials.
Open Downloads → ToolChiller Selection Tool
Start a structured preliminary selection workflow before engineering review.
Use Tool →20–50 HP Water-Cooled Chiller FAQ
What is a 20–50 HP industrial water-cooled chiller used for?
It is used for medium-to-large process cooling applications such as injection molding, plastic extrusion, die casting, thermal spray, electroplating, chemical process cooling, hydraulic cooling, process tanks, and factory equipment where condenser water or a cooling tower is available.
Is the 20–50 HP water-cooled chiller a fixed standard model?
No. APT treats this range as a configurable water-cooled chiller platform. Compressor type, condenser, evaporator, pump, tank, refrigerant, voltage, controls, and water circuit materials can be selected according to actual project requirements.
Does a 20–50 HP water-cooled chiller need a cooling tower?
Most water-cooled chillers require a cooling tower, condenser water loop, or plant cooling water system. Condenser water temperature, flow rate, water quality, and tower capacity should be confirmed before final selection.
How do I choose between 20 HP, 25 HP, 30 HP, 40 HP, and 50 HP?
Selection depends on process heat load, chilled-water temperature, condenser water temperature, flow rate, pump pressure, cooling tower capacity, operating schedule, and required cooling capacity margin.
What condenser is used in a water-cooled chiller?
Water-cooled chillers commonly use shell-and-tube water-cooled condensers. Final condenser configuration depends on condenser water temperature, water quality, flow rate, cleaning requirement, and project design.
What evaporator options are available?
Evaporator options may include shell-and-tube evaporator, plate heat exchanger, tank coil, stainless steel, or corrosion-resistant designs depending on process fluid, water quality, flow rate, and maintenance requirements.
Can the chiller include a pump and water tank?
Yes. APT can review built-in tank, external tank, no-tank layout, standard pump, high-flow pump, high-pressure pump, dual pump, bypass, and filter configurations according to system layout.
Can this chiller be used for chemical or electroplating cooling?
Yes, but chemical and electroplating cooling require review of fluid compatibility, corrosion risk, heat exchanger material, secondary loop design, pump material, and safety requirements before selection.
When should I choose an air-cooled chiller instead?
An air-cooled chiller may be easier when the site has no cooling tower or condenser water loop, needs quick installation, or prefers a standalone package. A water-cooled chiller is more suitable when condenser water infrastructure exists and continuous efficiency is important.
What information is needed for a quotation?
Please provide application, process heat load, chilled-water inlet and outlet temperature, flow rate, pump pressure, coolant type, condenser water temperature, cooling tower conditions, water quality, voltage, installation space, material requirements, and any safety or control requirements.
Need a 20–50 HP Water-Cooled Chiller Configuration?
Share your process heat load, chilled-water temperature, condenser water temperature, cooling tower conditions, flow rate, pump pressure, coolant type, voltage, water quality, material requirements, installation layout, and application details. APT engineers can configure a suitable 20 HP, 25 HP, 30 HP, 40 HP, or 50 HP industrial water-cooled chiller for your process cooling project.