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Reduce water use and stabilize cooling for water brake dynamometer test cells. Hance systems deliver 60–140 t/h flow for QST30 to QSK95 applications worldwide.
A purpose-sized cooling-water loop for water brake dynamometer test cells. It recovers and reuses process water while supporting the pressure, flow and heat-removal conditions required for dependable engine testing.
60–140 t/h Available water flow
5 models Application-based selection
Single / Multi Test-cell capability
Engineered for water retention, controlled supply quality and stable dynamometer cooling.
Why recirculate cooling water?
Control test-cell water use without compromising cooling
The Hance water recirculation system is designed for water brake dynamometers and can also work with other water-cooled heat sources. With sufficient system capacity, one installation can support several dynamometers or multiple heat loads.
01 / WATER RETENTION
Reduce operating water demand
Recovering and reusing cooling water reduces dependence on continuous once-through supply and helps control day-to-day operating cost.
02 / WATER QUALITY
Support lower maintenance
A controlled water supply helps protect the dynamometer cooling circuit from inconsistent supply conditions and unwanted contamination.
03 / PERFORMANCE
Maintain required flow and cooling
Correct system sizing supports the water pressure, flow rate and heat rejection needed for stable dynamometer operation.
04 / ENVIRONMENT
Limit conventional discharge
Recirculation and evaporative heat rejection reduce the volume of hot process water sent directly to drain.
Closed-loop operating principle
How the water recirculation system works
The system forms a reusable cooling-water circuit around the dynamometer and its connected cooling equipment. Final arrangement and capacity are engineered for the test-cell heat load and site conditions.
01
Supply cooled water
Conditioned water is delivered to the water brake dynamometer and any connected water-cooled test-cell equipment.
02
Absorb test heat
During operation, the water absorbs heat generated by the dynamometer and other connected heat sources.
03
Reject excess heat
Warm return water passes through the selected cooling equipment so that accumulated test heat can be removed.
04
Recover and recirculate
The cooled water is retained and returned to the supply loop, ready for the next stage of testing.
Product range
Cooling water system specifications
Choose the flow-rate range that matches the dynamometer and engine application. Final system selection should also consider simultaneous heat loads, inlet-water conditions and the complete test-cell arrangement.
Water Recirculation System Model Selection Scroll horizontally on small screens
Model
Technical Specifications
Application
Remark
60340.01
Water flow rate: 60 tons/hour
QST30 QSK23
60341.01
Water flow rate: 80 tons/hour
QSK50
60342.01
Water flow rate: 100 tons/hour
QSK60
60343.01
Water flow rate: 120 tons/hour
QSK78
60344.01
Water flow rate: 140 tons/hour
QSK95
Application references are based on the supplied product data. Contact Hance with the dynamometer model, engine rating, test duration and site conditions for final confirmation.
Engineering inputs
What determines the right system size?
Flow rate alone does not define a complete dynamometer cooling-water system. These inputs help establish the required capacity, circulation arrangement and cooling equipment.
Dynamometer and engine heat load
Rated power, test cycle and operating duration determine how much heat the system must continuously remove.
Required flow and pressure
The selected circulation system must deliver stable water conditions at the connected dynamometer and cooling circuits.
Supply and return temperatures
Entering-water temperature and allowable temperature rise affect cooling capacity and equipment selection.
Water quality and filtration
Managing debris, scale, corrosion and biological growth supports cooling efficiency and equipment service life.
Number of connected heat sources
A multi-dynamometer facility must be sized for the intended simultaneous load, not simply the number of test cells.
Site and ambient conditions
Available space, climate, water availability and the chosen heat-rejection method influence the final arrangement.
Flexible integration
Applications across the engine test facility
The system can be engineered around a single water brake dynamometer or incorporated into a larger facility cooling network serving several compatible loads.
Typical use cases
Water brake and hydraulic dynamometer test cells
Heavy-duty diesel engine testing
Single-cell or multi-dynamometer facilities
QST30 and QSK-series engine applications
Other compatible water-cooled heat sources
Sites with limited water supply or discharge capacity
Buyer questions
Water recirculation system FAQ
Practical answers for planning a dynamometer cooling-water loop and preparing the information needed for system selection.
What is a dynamometer water recirculation system?
It is a reusable cooling-water circuit that supplies water to a dynamometer, collects the heated return water, removes excess heat and sends the cooled water back into the test-cell loop.
Why use recirculated water instead of continuous fresh water?
Recirculation retains process water, reducing continuous water demand and hot-water discharge. It also gives the facility greater control over water quality, flow and cooling conditions.
Can one system serve more than one dynamometer?
Yes. The supplied product information states that one system can serve several dynamometers or other heat sources when sufficient capacity is engineered into the installation.
How do I choose between the 60, 80, 100, 120 and 140 t/h models?
Start with the listed engine application, then confirm the combined heat load, required water flow and pressure, inlet temperature, test duration, number of connected loads and site conditions.
Does the recirculation system replace all cooling equipment?
Not necessarily. A recirculation loop must work with an appropriate method of rejecting heat from the return water. The final cooling arrangement depends on the test load, climate, available utilities and facility design.
What information is needed for a system proposal?
Provide the dynamometer model, engine family and rated power, expected test duration, number of simultaneous test cells, target water conditions, available utilities and installation environment.
Build a complete test cell
Related dynamometer equipment
Explore compatible Hance systems for power absorption, engine cooling and test-cell measurement and control.
Plan the cooling-water loop around your actual test load
Share your dynamometer, engine application, flow demand and test-cell conditions with Hance for model selection and system planning.
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