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Condensate heat exchanger, uninsulatedCondensate heat exchanger, insulated by Inzonex
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Condensate heat exchanger2.2 kWbare108 Winsulated95.1 %less
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Inzonex Modular Insulation · Condensate line

Condensate heat exchanger

The pack and both end frames form a box that runs at line temperature. Drag the divider: the right-hand side is a fitted removable module on this exact geometry.

Energy cost saving / year€1 12160 €/MWh fuel
Heat retained / year16.8 MWhAt 8,000 operating hours
Emissions avoided / year3.77 t CO₂e201.6 kg CO₂e/MWh fuel
Modelled outer surface27.3 °CBelow the 45 °C design target

Estimate: 1 × 1.6400 m² · 110 °C bare surface · 8,000 operating hours/year.

€1 121energy cost saving / year16.8 MWhretained

For your operating conditions

Your savings

Change any input and every figure recomputes. The defaults describe the equipment modelled here.

The module closes over the box: the pack, both end frames and the four sides. The pack is opened for cleaning and re-gasketing, so anything glued to the frame is cut off at the first strip.

°C

Metal surface temperature. It sits a few degrees under the fluid temperature, not at it.

Or measure it: frame and pack, in mm

Put a tape on the closed pack: across the frame, up the frame, and the depth between the end plates. Fill all three and the area above is worked out. It is 2 × (W + H) × D for the four edges, plus 2 × W × H for both end frames. Pack depth changes with the plate count and after re-tightening, so measure it rather than taking it off a datasheet.

m²

Area of the closed box: four sides plus both end plates. The default is an assumption rather than a measurement, a pack 400 mm wide, 1000 mm high and 300 mm deep. Put a tape on your own frame and it recomputes.

Items of the same size and duty on this circuit.

h/yr

Hot standby counts: a standby unit full of hot water loses heat all year.

mm

Lamella at λ 0.038 W/m·K. Past 50 mm each further layer returns less.

°C

Plant-room annual mean. The outdoor design temperature is a different figure.

The symbol on the price you enter and on the saving that comes back. No exchange rate is applied, so enter the fuel price in the currency you pick.

€/MWh

Delivered fuel, before boiler efficiency.

€

Supply and fit for removable modules. Our default basis is 190 EUR/m² of covered surface. Replace it with your own quote in the currency you picked.

What this means

What it comes to.

At the modelled defaults, on this equipment.

Outer surface at 50 mm
27.3 °CMeets the 45 °C design target
Bare metal at 110 °C
Above the 45 °C study targetContact risk depends on material and duration; no burn time is calculated
Simple payback
3 monthsAt 190 EUR/m² supply and fit, saving €1 121 a year

Asked about condensate heat exchanger

Questions.

Answers distinguish modelled heat-loss estimates from equipment selection and service guidance.

How much heat does condensate heat exchanger lose on a condensate line?

Modelled here: 1 × 1.6400 m² at 110 °C lose 2.2 kW bare, and 108 W with 50 mm of removable insulation. That is 95.1 per cent less.

Where does the area come from?

Area of the closed box: four sides plus both end plates. The default is an assumption rather than a measurement, a pack 400 mm wide, 1000 mm high and 300 mm deep. Put a tape on your own frame and it recomputes.

Is it safe to touch once insulated?

The module settles at 27.3 °C on these defaults, under our 45 °C touch-safe target. We set that target against the burn thresholds in EN ISO 13732-1.

What the numbers mean

How the figure is produced.

Steady-state estimate using convection, radiation and an insulation energy balance. Equivalence to a surveyed equipment model has not been established.

Shape
Vertical plate, characteristic length 0.900 m
Convection
Churchill–Chu on air properties at film temperature
Radiation
Stefan–Boltzmann at emissivity 0.85
Bare-case allowance
×1.12, assumed class multiplier; not an inventory of actual thermal bridges
Insulated case
Outer-surface energy balance, without temperature clamping. 45 °C is a design target; plus an assumed 5% heat-loss allowance for seams. The exterior uses a 0.3 m vertical-plate approximation; conductivity is constant.

The rest of the line

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Heat-exchanger cleaning