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Heat Battery — Thermal Storage That Decouples Heat From Time

Heat Battery — Thermal Storage That Decouples Heat From Time

Heat Battery — Thermal Storage That Decouples Heat From Time

A heat battery stores energy as high-temperature heat in cheap solid mass (brick, refractory) and releases it on demand. It is the storage counterpart to every heat-driven technology in this KB: heat-driven cooling only runs when the driving heat is present, and a heat battery moves heat in time so the cold can be made when it’s wanted, not only when the heat happens to be available.

Rondo Energy

The collection’s source is Rondo Energy — the Rondo Heat Battery, which charges cheap brick mass with low-cost intermittent renewable electricity (resistive heating when wind/solar is abundant and prices are low) and discharges continuous zero-emission industrial heat. Its pitch is “low-cost, zero-emission heat for global industry” — turning the variability of renewables into firm, dispatchable high-temperature heat.

Why a cooling KB cares about a heat battery

Three connections to heat-driven cooling:

  1. Firms up the drive heat. An adsorption chiller or desiccant system needs a steady desorption-heat supply. Waste heat (a roaster’s exhaust) and solar thermal are intermittent. A thermal store buffers them — charge when the roaster runs or the sun shines, drive the chiller through the gaps.
  2. Load-shifts cooling onto cheap/clean electrons. Charge the store with off-peak renewable electricity, then make cold from stored heat during expensive on-peak hours — moving cooling demand off the peak without a battery of lithium cells.
  3. It’s the same “store the cheap energy” instinct as cold storage (chilled-water/ice tanks) seen from the hot side. Either end of the loop can hold the buffer.

Source caveat: one vendor source (Rondo). The concept is general thermal-energy-storage; Rondo is the high-temperature industrial instance most relevant to a waste-heat/renewable drive.

See also