{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","research_id":"eoa_inverse_innovation_exp12_light_screen_20260805","cell_id":"prediction_error_learning_calibration__computer_science","search_lanes":{"direct_problem_and_intervention":{"queries":["server rack airflow damper electrical load inlet temperature exhaust temperature predictive control","mechanical prediction error controller bellows actual predicted temperature damper"],"source_ids":["SRC1","SRC2","SRC4"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["pneumatic thermostat bellows opposed bellows differential temperature damper ratchet","patent mechanical thermal predictor bellows current transformer temperature damper","pneumatic compensating thermostat feedforward feedback damper"],"source_ids":["SRC1","SRC2","SRC4"],"no_result_note":"No retained source disclosed the complete non-electronic combination of a load-heated reference bellows, exhaust bellows, signed differential linkage, bidirectional ratchet memory, and rack damper."},"products_practices_and_standards":{"queries":["data center rack airflow management active damper temperature pressure product","site:ashrae.org data center thermal guidelines rack inlet temperature airflow management","site:energy.gov data center airflow management rack inlet temperature guidance"],"source_ids":["SRC1","SRC2","SRC3"],"no_result_note":null},"component_combination":{"queries":["patent rack damper computational load exhaust temperature feedforward feedback control","server rack damper predicted heat measured power inlet outlet temperature","rack airflow control dynamic workload temperature sensors fail open damper"],"source_ids":["SRC1","SRC2","SRC3","SRC4"],"no_result_note":null}},"sources":[{"source_id":"SRC1","title":"Chapter 19: Data Centers and Telecommunication Facilities","publisher":"ASHRAE","url":"https://handbook.ashrae.org/Handbooks/A15/SI/a15_ch19/a15_ch19_si.aspx","source_type":"OFFICIAL_GUIDANCE","claims_supported":["Datacom workloads and their cooling loads can vary over seconds or minutes.","Cooling capacity should be matched to actual heat load, while component temperatures remain within specified limits.","Inlet temperature, cooling flow, workload, power dissipation, and airflow are recognized thermal-management variables.","ASHRAE describes acceptable inlet-condition ranges and warns that operation outside allowable conditions risks equipment failure."]},{"source_id":"SRC2","title":"Data Center Efficiency and IT Equipment Reliability at Wider Operating Temperature and Humidity Ranges","publisher":"U.S. Department of Energy","url":"https://www.energy.gov/sites/prod/files/2013/12/f5/data_center_efficiency_and_reliabilit_at_wider_operating_ranges.pdf","source_type":"OFFICIAL_GUIDANCE","claims_supported":["Rack and row temperatures normally vary, and airflow changes can create hot spots.","Server exhaust temperature depends on inlet temperature, server power consumption, and airflow.","High exhaust temperatures can affect personnel, cabling, PDUs, switches, and maintenance practices.","Temperature and humidity should be monitored throughout the airflow, and cooling failures can exceed equipment envelopes quickly."]},{"source_id":"SRC3","title":"AirBooster 2: Airflow Management for Data Centers","publisher":"STULZ Oceania","url":"https://www.stulzoceania.com/products/detail/airbooster-2/","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["Changing server utilization can cause airflow oversupply or undersupply, increasing cost or overheating risk.","A commercial rack-adjacent product uses multiple temperature sensors and a controller to vary fan speed according to measured inlet temperature and a configurable setpoint.","The product demonstrates established automatic, localized airflow adjustment but not load-conditioned mechanical forecast-error learning."]},{"source_id":"SRC4","title":"Data Center HVAC System with Rack Level Air Flow Control (U.S. Patent Application 20260143651)","publisher":"Justia Patents","url":"https://patents.justia.com/patent/20260143651","source_type":"OTHER","claims_supported":["The application discloses a rack damper controlled using measured rack-exit temperature.","It describes feedforward control based on estimated or predicted rack heat transfer and computational load, combined with feedback or PI control.","It describes models using inlet temperature, outlet temperature, and measured computer power, as well as predictive airflow actions.","It includes opening the damper in response to control or power failure."]}],"problem_evidence":{"status":"SUPPORTED","finding":"The general problem is visible: rack heat loads are dynamic; exhaust temperature is jointly determined by inlet temperature, power, and airflow; and localized overprovisioning, underprovisioning, hot spots, and thermal-limit violations are recognized concerns. Existing products also show that raw-temperature/setpoint control is practiced. The narrower assertion that raw-temperature dampers often make incorrect adjustments was not directly quantified by the retained sources.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"closest_prior_art":[{"name":"Data Center HVAC System with Rack Level Air Flow Control","source_ids":["SRC4"],"overlap":"Very close functional architecture: a rack-level damper, measured exhaust temperature, inlet/outlet and power-based heat estimation, predictive or feedforward control, feedback/PI adjustment, and fail-open behavior.","remaining_difference":"The disclosed implementation depends on processors and stored instructions and does not disclose an independently preconditioned reference bellows mechanically subtracted from later exhaust, error-only ratchet stepping, or persistent bidirectional mechanical update memory."},{"name":"STULZ AirBooster 2","source_ids":["SRC3"],"overlap":"Commercial localized airflow control for varying server loads, using multiple temperature sensors and automatically varying airflow to avoid over- or undersupply.","remaining_difference":"It controls an EC fan from measured inlet temperature relative to a configurable setpoint; it does not form a prior load-conditioned exhaust forecast, mechanically subtract actual from predicted temperature, or retain signed damper calibration steps."},{"name":"ASHRAE datacom thermal-management practice","source_ids":["SRC1"],"overlap":"Recognizes dynamic workloads, load-dependent cooling requirements, airflow control, multiple sensor inputs, and the objective of maintaining component temperatures while balancing energy and reliability.","remaining_difference":"It supplies design and operating guidance rather than the proposed rack-local thermo-mechanical prediction-error actuator."}],"prior_art_disposition":"ADJACENT_PRIOR_ART","contrastive_claim_remaining":"Within the searched material, the remaining falsifiable claim is not predictive rack cooling generally. It is that a non-computational module can establish a rack-specific expected exhaust state before the outcome from current, inlet temperature, and prior damper angle; mechanically subtract later measured exhaust; and retain bounded bidirectional damper updates only when the signed residual persists outside a deadband. The close patent substantially narrows this claim because it already combines rack dampers, measured exhaust, power/inlet-informed prediction, feedback, and fail-open behavior in software.","contrastive_claim_falsifier":"The contrast fails if the reference-bellows state does not lead and predict exhaust across the test matrix; differential displacement does not track actual-minus-predicted sign; within-deadband trials advance the ratchet; reversing residual sign does not reverse retained updates; locking or removing the reference bellows leaves substantially the same adaptive behavior; or a raw-temperature controller issues materially identical update directions and persistence across the discriminating conditions.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered direct wording, historical pneumatic and bellows terminology, commercial products, official guidance, patents, predictive controls, and component combinations. Exactly four opened sources from four publishers were retained, including official and first-party material.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"Official guidance and a commercial product support dynamic rack loads, load/airflow-dependent exhaust temperature, hot-spot and overcooling concerns, and the operational use of localized temperature-responsive airflow control.","source_ids":["SRC1","SRC2","SRC3"]},"distinct_testable_claim":{"status":"PASS","rationale":"Although predictive rack-damper control is close prior art, the proposed mechanically embodied prior/outcome subtraction and residual-gated bidirectional ratchet memory remain distinct and have explicit removal, sign-reversal, deadband, and baseline falsifiers.","source_ids":["SRC3","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"A twelve-cycle isolated dummy-load bench matrix with locked-ratchet and raw-temperature baselines is limited in scope and directly measures forecast lead, residual sign, pawl direction, deadband behavior, and retained steps. It is appropriate only as a mechanism check.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"No obvious stop prevents an isolated bench test approved by a qualified facilities engineer, provided electrical isolation, rated components, independent over-temperature cutoff, verified end stops, and fail-safe spring return remain active. Production-rack installation, shared-plenum effects, hot exhaust, binding, capsule leakage, and thermal-shutdown bypass remain outside the authorized first step.","source_ids":["SRC1","SRC2","SRC4"]}},"screen_survival":true,"world_novelty_boundary":"This coarse four-source public-web screen found close digital predictive rack-damper control and established temperature-responsive airflow products, but no complete thermo-mechanical forecast-error-and-ratchet implementation. That bounded result supports only an adjacent-prior-art disposition; it does not establish world novelty, patentability, freedom to operate, market size, expert acceptance, production safety, realized value, or absence of undiscovered patents, products, papers, or historical pneumatic controls."}