1. Don’t panic, but know where the heat is

Douglas Adams’ The Hitchhiker’s Guide to the Galaxy returns one last time for this wondering sequence because autonomous heat trading needs the same simple, reliable infrastructure as power and network autonomy. Before cells can trade heat, they must know their own temperature, their own dissipation, and whether a path exists to a cooler neighbor.

This entry lists what the desktop would have to provide for autonomous heat trading to work.

2. Physical provisions

The hardware must support controlled heat flow:

  • Thermal buses or heat-pipe links between cells: a low-resistance path for heat to move from hot cells to cells with spare radiator capacity.
  • Variable thermal interfaces: adjustable conductance between cells so heat flow can be modulated or shut off.
  • Distributed temperature sensing: enough sensors to map the temperature field across the platform.
  • Adequate radiator margin on donor cells: cells that accept heat must have radiator capacity to reject it.
  • Thermal inertia and heat storage: phase-change materials or thermal mass to buffer transient mismatches.

3. Information and policy

The cells must share data and obey rules:

  • State broadcast: each cell reports temperature, dissipation, available cooling, and thermal health.
  • Trading protocol: a deterministic way for cells to offer, request, and accept heat transfer.
  • Priority policy: ground-defined rules for which loads get cooling when supply is constrained.
  • Thermal forecasting: estimates of future dissipation and available cooling so trades do not mortgage the next hot period.

4. Safety and fallback

A heat market cannot be allowed to overheat the platform:

  • Hard temperature limits: maximum cell and interface temperatures that override any trade.
  • Emergency load shedding: if a cell overheats, non-critical loads are shut down or throttled.
  • Graceful degradation: if a thermal path fails, the system reverts to independent-cell cooling.
  • Audit log: every heat-routing decision is recorded for ground review.

5. What this changes

  • Autonomous heat trading requires thermal buses, variable interfaces, and a policy layer.
  • Many of these provisions are worth making even for a static thermal design.
  • The next entry will decide whether the desktop should design for this capability.