Batch cooling
Track product load and the complete batch cycle, including the actual starting / ending conditions defined by the qualified process. Source recovery and heat-exchanger performance can both matter.
Food process refrigeration and glycol cooling
Food process refrigeration systems.
Match cooling from source to user.
Specify source, glycol / secondary distribution, heat exchangers, recovery and controls against the actual product and concurrent cooling duty.
How DPS can scope the process and investment decision.
Start with the business outcome
Cooling equipment should be assessed at the process interface, not only at a compressor or chiller rating. DPS can connect refrigeration / secondary-loop requirements, process heat exchange, controls and installation with specialist packages. ROI depends on metered baseline cost and independently useful productive time after the complete line can accept the recovered duty.
Qualified refrigeration specialists establish refrigerants, pressure / electrical systems, environmental duties, source packages and required protections. This technical application guide explains the cooling chain; the utility-constraint scenario handles broader investment and live-plant execution decisions.
Product and operating requirements: materials, quality and equipment duty.
Continuous process cooling
Define flow range, thermal load, approach / return conditions and expected operating modes. Include fouling, viscosity and downstream stability in the duty basis.
Cold-side schedule
Map mix tanks, fermentation, filling, hardening or other applicable users with defrost / cleaning and utility peaks. Average utilization can conceal a short simultaneous limitation.
Compare the process sequence, equipment options and interfaces.
Record matched source, distribution and process conditions during a real limitation.
Define product demandQualified load and production pattern.
Trend supply / returnMeasure at source and actual user.
Identify the limitationSource, distribution, exchanger or sequence.
Verify corrected dutyAccepted product and whole-line time.
Resolve before procurementA high return temperature is an observation, not by itself a new-chiller specification.
Compare pump, valve, insulation, exchanger and scheduling changes with the source envelope.
Survey retained assetsCondition, routing and sensors.
Model the correctionUse qualified thermal / hydraulic design.
Coordinate controlsOperating states and shared users.
Meter matched operationEnergy and useful product conditions.
Resolve before procurementExtra circulation or lower setpoints can increase operating cost without creating useful capacity.
Define future duty, recovery and risk basis before selecting specialist packages.
Build concurrent loadInclude cleaning / defrost where applicable.
Compare alternativesCapital, tariff, service and space.
Integrate interfacesPower, secondary loop and controls.
Accept at the userRequired conditions and owner readiness.
Resolve before procurementSource nameplate capacity is not acceptance of the installed product process.
Equipment duties, utilities and supplier responsibilities.
Swipe horizontally to compare all columns ↔
| System | Operating duty | Relevant DPS guide | Confirm before purchase |
|---|---|---|---|
| Utility supply and return | Meet the duty where the process actually uses it. | Utility infrastructure ↗ | Peak overlap, recovery, quality, point-of-use conditions and isolation. |
| Process heat exchange and secondary loop | Transfer required duty at the product interface. | Process engineering ↗ | Thermal / hydraulic calculations, materials, return and cleanability. |
| Instrumentation and controls | Execute the agreed sequence and record meaningful equipment states. | Automation & controls ↗ | I/O, alarms, recipe authority, backups and acceptance tests. |
| OEM and field interfaces | Connect the selected equipment to the existing operating train. | Installation & integration ↗ | Mechanical, electrical, software, site access and integrated acceptance. |
Refrigeration source vs glycol loop vs process exchanger.
Define the required duty at each boundary so a package improvement is not mistaken for complete-system performance.
Swipe horizontally to compare all columns ↔
| Decision | What to compare | Acceptance evidence |
|---|---|---|
| Source | Real conditions, peak load, recovery and specialist limits | Agreed source duty with defined simultaneous users. |
| Secondary loop | Routing, flow, insulation, valves and return | Delivered process conditions under actual demand. |
| Process exchanger | Product behavior, thermal duty, fouling and cleaning | Qualified product conditions and useful production time. |
Slow cooling cycle, high energy bill and operating value.
Swipe horizontally to compare all columns ↔
| Observed condition | Measure before design | DPS / team decision | Economic basis |
|---|---|---|---|
| Slow cooling cycle | Measure full batch and thermal conditions. | Target the verified source-to-user limit. | Useful accepted product, demand capped. |
| High energy bill | Meter comparable load / ambient conditions. | Assess suitable control / recovery options. | Actual baseline cost net of added service. |
| Uneven user performance | Trend source and local supply / return. | Review distribution and exchanger duty. | Independent resource and production effects. |
| Expansion pressure | Build present / future peak profile. | Compare phased source / distribution options. | Matched installed alternatives, not nameplate price alone. |
Compare operating corrections, retrofit and replacement.
Meter at the actual limitation and compare source, secondary distribution, heat transfer and control behavior. Preserve adequate retained packages and plan qualified tie-ins.
Investment boundaryThe preset is a hypothetical intervention in an existing operation. Defined capital scope, separate site additions, owner startup expense and working capital have different boundaries. Verify useful output, purchase reductions and payroll changes independently.
Build the product / package schedule and concurrent cooling profile before selecting source size and routing. Include qualified source packages, electrical / civil interfaces, backup basis and service.
Investment boundaryBuild the full product / package, specialist OEM and utility scope. Set historic savings to zero, include every additional fixed operating cost, and model commercial ramp and working capital. The retrofit preset is not a whole-plant quotation.
Food process refrigeration and glycol cooling equipment price and installed upgrade cost.
Compare proposals with the same product duty, supplier boundaries and acceptance basis. The amount below is a transparent planning example, not a market price range, supplier estimate or DPS quotation.
| Cost bucket | Assumed amount |
|---|---|
| Application engineering and supplier duty review | $51,000 |
| Defined equipment / instrumentation components | $183,000 |
| Mechanical and electrical field installation | $94,000 |
| Controls and interface development | $55,000 |
| Commissioning / agreed acceptance support | $25,000 |
| Training, documentation and handover | $17,000 |
| Defined project scope | $425,000 |
| Separate site / facility additions | $75,000 |
| Capital contingency (15%) | $75,000 |
| Separate one-time startup / shutdown cost | $35,000 |
| Incremental working capital | $10,000 |
| Total initial cash | $620,000 |
The defined scope assumes applicable freight, procurement charges and taxes are included in the owner’s estimate. Add missing civil, land / shell, OEM, environmental, validation and permitting costs explicitly. Site and field conditions, duty, production access and quoted supplier scope determine actual price. Financing is excluded.
Worked operating case
Hypothetical screening case: 250 days × 0.3 equivalent useful hour/day × 1,000 accepted kg/h × 60% realization, capped at 60,000 kg incremental demand, gives 45,000 additional sold kg/year. Net price $4.2/kg less incremental variable cost $2.7/kg gives $1.5/kg contribution. Verified baseline purchase savings are $0, realized payroll savings $0, energy $50,000, cleaning resources $0 and maintenance $8,000 per year. Deduct $15,000 additional annual fixed cost. Extra-volume cooling energy is already in variable cost. The $50,000 energy saving refers only to the matched existing baseline and excludes the separately realized additional product.
Calculated from these assumptions: steady annual net benefit $110,500; year-one net cash $72,850; cash payback Beyond 5 years; five-year NPV at 10% is −$235,345. Change the assumptions below to test a different case.
Food process refrigeration and glycol cooling ROI, payback and cash flow.
Replace the illustrative inputs with your own measured or quoted values. The five-year pre-tax model uses good kilograms, demand-capped contribution and separately verified baseline savings; it is not a project quotation.
All defaults are illustrative. The default case is an operating-plant improvement, not a greenfield quote. For a new operation, set baseline savings to zero and enter every additional operating and capital cost.
- Initial cash investment
- $620.0k
- Steady annual net benefit
- $110.5k
- Cash payback
- Beyond 5 years
- 5-year NPV
- −$235.3k
- Steady annual cash ROI
- 17.8%
- 5-year net cash ROI
- -17.0%
Includes contingency, startup and working capital
Incremental operating cash before tax
Includes year-one ramp assumption
At 10% annual discount
Net annual benefit ÷ initial cash
Net cumulative gain ÷ initial cash
Modeled incremental sales: 45,000 kg/year at $1.50/kg contribution. The base case does not recover the required discounted return within five years. Year-one net cash: $72,850.
Realization needed for the target operating payback
Not feasible
Demand, time, contribution or other cash benefits cannot meet the 4-year target under these assumptions.
CSV export is local. No inputs are submitted.
Cumulative project cash
BaseDownside
Swipe the chart to compare all five years ↔
Inspect annual cash flow and sensitivity
Swipe horizontally to compare all columns ↔
| Year | Net cash | Cumulative cash | Discounted cash |
|---|---|---|---|
| Initial | −$620,000 | −$620,000 | −$620,000 |
| Year 1 | $72,850 | −$547,150 | $66,227 |
| Year 2 | $110,500 | −$436,650 | $91,322 |
| Year 3 | $110,500 | −$326,150 | $83,020 |
| Year 4 | $110,500 | −$215,650 | $75,473 |
| Year 5 | $110,500 | −$105,150 | $68,612 |
Swipe horizontally to compare all columns ↔
| Case | Annual benefit | NPV | Cash payback |
|---|---|---|---|
| Downside | $83,500 | −$445,333 | Beyond 5 years |
| Base | $110,500 | −$235,345 | Beyond 5 years |
| Upside | $128,388 | −$172,416 | Beyond 5 years |
Downside: installed and site costs +20%, realization ×0.75 and unit contribution reduced by 20% of its absolute value. Upside: realization ×1.15, capped at 100%, and unit contribution improved by 10% of its absolute value. The demand ceiling still applies.
Formulas, scope and double-counting rules
Initial cash = (defined project scope + site additions) × (1 + contingency) + separate startup / shutdown cost + working capital. Contingency is conservatively treated as spent initially.
Sold incremental kg = min(days × recovered hours/day × constrained good kg/hour × realization, incremental demand). Contribution = sold incremental kg × (net price − incremental variable cost). New-volume labor, energy and packaging belong in that variable cost.
Baseline material benefit uses the verified percentage of actual purchases avoided at unchanged accepted baseline output. It is not a direct subtraction of two loss rates. Count a recovered kilogram once, either as its applicable cash saving or as incremental contribution.
Net annual benefit = contribution + independently realized baseline cash savings − added fixed operating cost. Year one scales gross benefits by the ramp factor while paying the full added fixed operating cost. Do not also count the same launch loss in the one-time startup amount.
Cash ROI = net annual benefit / initial cash. Five-year net ROI = (five-year cash inflows − initial cash) / initial cash. NPV = −initial cash + Σ cash flow(t)/(1 + discount rate)^t. Payback uses annual cash with linear interpolation within the recovery year. The threshold solver excludes terminal working-capital recovery.
This is a five-year screening horizon, not an asset’s entire life. No tax, debt, depreciation, grants, escalation, asset resale or additional replacement capital is modeled. Include recurring service costs in operating expense and use a detailed monthly budget for formal capital approval.
Refrigeration baseline-energy worksheet
The defaults reproduce $50,000 gross annual baseline savings in the main case. All additional annual service and fixed operating expenses are included in the main $15,000 input.
Commissioning tests and performance acceptance.
Agree the design basis.
Use representative products, measured constraints and a documented utility / cleaning envelope. Assign each supplier and owner interface.
Test the complete sequence.
Plan FAT / SAT, instruments, recipes, permissives, quality checks and upstream / downstream handshakes as appropriate to the scope.
Verify economic realization.
After stabilization, compare matched products and operating conditions. Reconcile extra output with sales, and baseline savings with actual purchases, bills and payroll.
Published scope / project context
DPS publishes process engineering, configured equipment, controls and installation / integration services. The source links establish relevant scope. The amounts, time changes, resource reductions and returns here are original hypothetical inputs, not achieved DPS customer results.
Compare installed scope, continuity and useful life.
Swipe horizontally to compare all columns ↔
| Decision | Targeted intervention | Broader replacement / new operation |
|---|---|---|
| Constraint | A measured gap can be corrected within retained assets. | The verified operating envelope cannot meet product, demand or reliability needs. |
| Cost scope | Include engineering, interfaces, shutdown, commissioning and retained-asset risk. | Include all new systems, site / facility work, OEMs, utilities, ramp and working capital. |
| Benefit | Only incremental contribution and genuinely avoided costs versus the current operation. | Demand-supported contribution less the full additional operating cost versus the agreed alternative. |
| Acceptance | Verify the changed duty and its effect on the complete line. | Verify the integrated new train and the owner’s readiness to operate. |
Food process refrigeration and glycol cooling project FAQ
Will lowering the glycol setpoint improve output?
Not automatically. It can increase energy use and affect the process. Determine the actual source, distribution and heat-transfer limitation with the qualified team.
Can energy and capacity benefits be combined?
Yes if independent: baseline energy savings apply to existing production, while new-volume energy is included in variable cost. Verify whole-line useful output and demand.
Is this a refrigeration package supplier page?
It is an engineering and integration guide. Confirm specialist package supply, refrigerant / pressure work and qualified acceptance explicitly.
Are these prices or returns a DPS commitment?
No. The example inputs exist to make the business-case calculation reviewable. Actual scope, prices, schedule, savings and performance need project-specific assessment and agreement.
What should the first DPS conversation include?
Bring the product and package mix, operating baseline, commercial target, retained assets, site constraints, available outage window and the capital options you are considering. Mark unknowns for measurement or supplier trials.
Bring an operating baseline and a testable investment brief.
Prepare the information below, export the assumptions you have modeled, and discuss the unknowns with DPS. An unmeasured input is a question to resolve, not a reason to invent precision.
Checklist and model data stay in this browser until you choose to share them.
Sources, assumptions and further reading.
Industrial refrigeration assessment context
The NSW industrial refrigeration guide organizes opportunities for evaluating industrial cooling. It is a systems-assessment reference; no external project saving is transferred into the hypothetical DPS screening example.
- DPS service and equipment scope
- DPS industry overview and published project context
- Utility infrastructure
- Process engineering
- Automation & controls
- Installation & integration
Guide assumptions reviewed on 26 October 2026. Qualified site / product teams establish regulatory and food-safety requirements; this guide does not prescribe a validated process.
Related Planning Guides
Ice Cream Factory Planning: Match Production, Hardening and Cold Storage
Balance ice cream mix, freezing, hardening and cold storage; connect DPS vessels and integration services with a grounded four-system project lesson.
Food Plant Utility Design Basis: Define Capacity Before Freezing the Engineering Scope
Define a food plant utility design basis using operating events, simultaneous peaks, supply conditions, future capacity and clear package interfaces.
Food Plant Utility Strategy: Buy Peak Capacity or Redesign the Production Schedule?
Compare utility peak capacity, sequencing and buffers using a timed load model, DPS CIP interfaces and a reported retrofit case with staged tie-ins.