Capture and re-use heat already paid for

Waste Heat Recovery

Recover heat from exhausts, flue gases, kilns, compressors and cooling water — and store it for when it is needed.

Deep-dive · 35 pages

Industry rejects a large share of its fuel energy as waste heat. Recovery exchangers, economisers and ORC units capture it; storage solves the mismatch between when waste heat appears (batches, shifts) and when it is wanted.

The first step is a heat audit that maps sources and sinks by temperature, flow and timing.

Key facts

Sources
Exhaust, flue gas, kilns, compressors
Equipment
Recuperators, economisers, ORC
Storage role
Bridge time mismatch
Start
Pinch / heat audit

Waste heat recovery8

  • Industrial exhaust heat
  • Furnace and kiln waste heat
  • Boiler flue-gas heat recovery
  • Compressor heat recovery
  • Data-centre waste heat
  • Industrial cooling-water heat recovery
  • Power plant condenser and auxiliary heat recovery
  • Manufacturing process waste heat

Heat transfer equipment9

  • Shell-and-tube heat exchangers
  • Plate heat exchangers
  • Air-cooled heat exchangers
  • Finned-tube exchangers
  • Recuperators
  • Economisers
  • Condensers
  • Evaporators
  • Thermal fluid circulation systems

Related calculators

  • All 100 calculators

Calculators are available to staff / admin only.

Related topics

Project & partnership desk

Planning Waste Heat Recovery?

Tell us your heat demand, site and timeline — BARREL engineers, suppliers and partners will help you scope it.

Calculators are available to staff / admin only

BARREL staff and administrators sign in to BARREL Office to use the heat storage calculators. For a project estimate, send us an enquiry and our engineers will run the numbers for you.

BARREL: Bharat Atom Renewable Resources Energy Limited