Get a quick estimate of your potential energy and cost savings with a CES heat pump dryer integration.
Dryer geometry & product
Don't know? — use room temp
Don't know? — use 25%
no band selected
Don't know? — use room temp
What is dewpoint, and what should you choose?
Dewpoint is the temperature at which the moist air inside the oven becomes saturated — i.e. how humid the in-oven air is. In a baking or drying tunnel, it depends on how much fresh-air intake you allow:
Fresh-air intake fully open — dry oven atmosphere, surface drying dominates → choose dewpoint = 45 °C
Fresh-air intake partly open (medium) — balanced moist/dry baking → choose dewpoint = 60 °C
Fresh-air intake at minimum — humid oven, gentle bake, less crust formation → choose dewpoint = 70 °C
Higher dewpoint generally means more moisture is recovered as condensate, which improves heat-pump efficiency. If unsure, the medium setting (60 °C) is a reasonable starting point for biscuit and similar baked goods.
Energy & economics
Source: Eurostat H2 2025 industrial prices (non-household consumers, excl. VAT and recoverable taxes)
Industrial/non-household consumer prices (500–2,000 MWh/yr), excl. recoverable VAT.
Data: nrg_pc_205 (electricity) and nrg_pc_203 (gas).
Prices vary by semester and subsidy regime — use as indicative starting point and verify with local tariff. → Eurostat electricity prices→ Eurostat gas prices
Estimated savings
Energy saving
–%
vs. current heating
Total thermal output on steam coils
–kW
HP-delivered (Q_cond_HP)
Total reference thermal output
–kW
current heat-source input
Cost saving
–€/yr
net of HP electricity
CO₂ reduction i
–t/yr
based on emission factors
CO₂ reduction calculation
Annual CO₂ avoided is the emissions of the replaced reference heat source minus the emissions of the HP's electricity consumption:
CO₂ saved = (Qref × hours × fuel factor) − (PHP × hours × grid factor)
Fuel emission factors (kg CO₂ / kWh fuel input):
Natural gas / LNG: 0.20 · LPG: 0.23 · Oil: 0.27 Grid emission factor (kg CO₂ / kWh electricity) — from the selected country, currently –.
Sources: IPCC AR6 (fuels), EEA / national TSO disclosures (grid). Indicative values.
COP (global)
–
heat delivered / power consumed
Consumed power
–kW
total HP electrical input
Estimate only. This calculation uses typical assumptions for module sizing, dewpoint per product type, and emission factors. Reported ranges reflect approximate model uncertainty; actual savings depend on zone-specific design choices not captured in this public tool. For a project-specific analysis, contact Circular Energy Systems for a Pre-Engineering Study.
Energy balance — dryer loads (TOTAL)
Dryer zone overview
Calculate your cost and ROI — contact the Circular Energy team now
The team will review your inputs within 4 working days, validate the estimates, calculate a preliminary cost & return of investment, and reply with a tailored Pre-Engineering Study proposal.
Privacy: This calculator runs in your browser. Your inputs are sent to our calculation server (hosted in the EU) for processing only — no personal data is stored, and no cookies or tracking are used. If you choose to contact us via the form below, the information you submit is handled in accordance with our Privacy Policy.
How to use this calculator
A 3-step guide to estimate your savings — should take about 2 minutes.
1
Enter your dryer geometry & product
Number of zones, oven length, band width, product flow in and out, and process temperatures. If you don't know a value, look for the green "Don't know? — use ..." hints below the field.
2
Choose your country and reference heating source
Pick your country to auto-fill typical industrial energy prices (Eurostat H2 2025), then choose what you currently use to heat the dryer — gas, oil or electricity. The HP-replacement saving is calculated against this reference.
3
Click Calculate
You'll see your indicative energy saving %, cost saving in €/yr, CO₂ reduction, and a breakdown of where the heat goes in your dryer. The result is an estimate — for a project-specific analysis, contact our team using the button below the results.
Try it with an example
Click the button below to load a typical biscuit-baking case (4 zones, 32 m oven, electrically-heated, Germany). Then click Calculate to see how the calculator works.
What the less-obvious fields mean
Zones — number of separately heated sections along the oven (typically 3–8 for biscuit/granola lines).
Highest zone temperature — the hottest set-point along the oven, usually one of the middle zones.
Product / Band inlet temperature — the temperature of the dough and the band as they enter the oven. If you don't know, click "use room temp".
Dough moisture inlet — water content of the dough at the inlet (wet basis, %). Typical biscuit dough is around 17–25%.
Dewpoint — humidity inside the oven atmosphere. Click the (i) next to the field for guidance based on your fresh-air intake setting (45 / 60 / 70 °C).
Band type — the conveyor belt material; this affects how much energy is "wasted" heating the band itself in each cycle.
Reference heating source — what you use today (gas / oil / electricity). The saving is calculated as the difference between this reference and a heat-pump-driven setup.
Operation hours — how many hours per year the dryer runs at the conditions you've entered. Used to convert kW into MWh/yr and €/yr.
About the result
The headline Energy saving % is the share of fuel (or electricity) you save by replacing your existing heater with a Circular Energy heat pump integration. The reported range reflects approximate model uncertainty — actual savings depend on zone-specific design choices not captured in this public tool.
Cost saving is the difference between current OPEX and the heat pump's electricity cost, including the HP's COP. CO₂ reduction uses standard fuel emission factors and the grid emission factor for the country you selected.
Need help?
For a tailored Pre-Engineering Study, click the orange "Contact Circular Energy team" button at the bottom of the results. Our engineers will validate the estimate against real engineering data and reply within 4 working days.
Contact Circular Energy
We'll review your calculation and get back to you within 4 working days.
