{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp12_substrate_denial72_20260805","research_id":"eoa_inverse_innovation_exp12_light_screen_20260805","cell_id":"anchoring_reset__computer_science","search_lanes":{"direct_problem_and_intervention":{"queries":["passive self acting differential temperature control valve two sensors bulbs supply return valve","data center liquid cooling rack balancing valve delta T flow commissioning TDP","self-operated differential temperature valve supply return capillary thermostat","mechanical delta T valve hydronic system two temperature sensors"],"source_ids":["SRC1","SRC2"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["differential temperature controller self-acting valve hydronic","patent valve two temperature sensing bulbs bellows differential temperature","patent differential temperature valve sensing bulbs","mechanical differential thermostat two bulbs bellows valve patent"],"source_ids":["SRC3"],"no_result_note":null},"products_practices_and_standards":{"queries":["site:opencompute.org liquid cooling rack flow rate heat load delta T commissioning valve","site:ashrae.org liquid cooling data center flow temperature delta T rack","site:lbl.gov data center liquid cooling commissioning flow valve load simulation","delta T control valve hydronic mechanical"],"source_ids":["SRC1","SRC2","SRC4"],"no_result_note":null},"component_combination":{"queries":["patent passive temperature difference actuated valve supply return","thermostatic valve controls temperature difference supply return passive valve","Frese DELTA T Control System","US5065595 thermostatic expansion valve inlet outlet sensing bulbs"],"source_ids":["SRC3","SRC4"],"no_result_note":null}},"sources":[{"source_id":"SRC1","title":"Chapter 20: Data Centers and Telecommunication Facilities","publisher":"ASHRAE","url":"https://handbook.ashrae.org/Handbooks/A19/IP/a19_ch20/a19_ch20_ip.aspx","source_type":"OFFICIAL_GUIDANCE","claims_supported":["Datacom equipment nameplate ratings represent maximum power draw for approval, not actual power draw or measured heat release.","Realistic heat-release information is important for efficient facility planning, and workload-based estimates are more accurate than server-family maximum power.","Liquid-cooling flow and pressure requirements vary with configuration, facility-water supply temperature, and rack heat dissipation.","Mechanical infrastructure outlives multiple generations of computing equipment, making changed configurations a foreseeable operating condition."]},{"source_id":"SRC2","title":"Systematic Approach for Universal Commissioning Plan for Liquid-cooled Systems","publisher":"Lawrence Berkeley National Laboratory Center of Expertise for Data Center Efficiency","url":"https://datacenters.lbl.gov/resources/systematic-approach-universal","source_type":"OFFICIAL_GUIDANCE","claims_supported":["Commissioning liquid-cooled computing systems includes pressure testing, flow testing for valve operation and flow rates, control-sequence testing, and load simulation.","Liquid-cooling safety margins can be small, and disrupted coolant flow can cause outages or equipment damage.","An isolated comparison across loads, including valve, leakage, flow, and failure-response observations, is consistent with recognized commissioning practice."]},{"source_id":"SRC3","title":"Patents Assigned to Sporlan Valve Company","publisher":"Justia","url":"https://patents.justia.com/assignee/sporlan-valve-company","source_type":"OTHER","claims_supported":["The listing reproduces the abstract and bibliographic record for U.S. Patent 5,065,595, filed in 1990 and granted in 1991.","That valve uses sensing bulbs at an evaporator inlet and outlet, opposed diaphragm assemblies, an interconnecting push rod, an adjustable compression spring, and a valve element modulated in response to differential temperature.","The historical disclosure substantially overlaps the proposal's central two-bulb, opposed-pressure, spring-biased mechanical actuation architecture, although it is for a refrigerant circuit rather than a rack water-glycol branch."]},{"source_id":"SRC4","title":"Frese DELTA T Control System","publisher":"Frese A/S","url":"https://www.frese.eu/hvac/en-GB/Products/Energy-Management/Frese-DELTA-T-Control-System","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["A commercial hydronic product measures inlet-to-outlet temperature difference and reduces valve flow when delta-T is below its set point.","The product seeks pump-energy reduction and release of shared flow capacity, closely matching the proposal's flow-allocation objective.","The commercial system uses temperature sensors, electronic logic, a 0-10 V signal, and a modulating actuator, so it does not supply the proposal's non-networked passive mechanism.","The product includes a programmed minimum actuator signal to avoid starving the terminal unit, functionally analogous to preserving minimum flow."]}],"problem_evidence":{"status":"PARTLY_SUPPORTED","finding":"The general mismatch is visible: ASHRAE states that nameplate power is not actual heat release, that cooling should match actual heat load, and that required flow depends on rack dissipation, configuration, and supply temperature. LBNL treats flow, valve operation, changing load, and failure response as commissioning-critical. The retained sources do not directly document the narrower asserted failure mode in which a particular rack's manually commissioned, nameplate-derived valve mark persists after change and causes over- or under-flow.","source_ids":["SRC1","SRC2"]},"closest_prior_art":[{"name":"U.S. Patent 5,065,595, Thermostatic expansion valve","source_ids":["SRC3"],"overlap":"Discloses the proposal's core mechanical combination: inlet and outlet temperature bulbs, opposed diaphragm pressure elements, a mechanically interconnected valve member, and an adjustable spring, with valve modulation driven by temperature difference.","remaining_difference":"It regulates refrigerant across an evaporator, not single-phase rack coolant; the retained abstract does not establish the proposed rack-specific fail-open bias, parallel minimum-flow bypass, stroke-memory collar, or visible disconnected commissioning mark."},{"name":"Frese DELTA T Control System","source_ids":["SRC4"],"overlap":"Uses contemporaneous inlet/outlet delta-T to modulate hydronic flow, reduce pump energy, release shared capacity, and avoid terminal starvation—substantially overlapping the control objective and measured variable.","remaining_difference":"It is an electronic overlay using sensors, logic, BMS input, a 0-10 V signal, and a powered actuator rather than opposed fluid-filled bulbs and direct passive mechanical actuation."},{"name":"Liquid-cooled-computing commissioning and configuration-specific flow practice","source_ids":["SRC1","SRC2"],"overlap":"Recognized practice already replaces blind reliance on nameplate maximums with configuration- and load-sensitive heat information, manufacturer flow requirements, direct flow/pressure/temperature testing, valve verification, and load simulation.","remaining_difference":"These sources prescribe engineering information and commissioning tests, not a continuously self-acting, mechanically isolated rack-branch delta-T valve."}],"prior_art_disposition":"SUBSTANTIAL_COLLISION","contrastive_claim_remaining":"A narrower, falsifiable application claim remains: in a single-phase water-glycol rack branch whose fixed commissioning restriction is demonstrably mismatched to current demand, a pressure-rated, fail-open adaptation of the known opposed-bulb differential-temperature valve architecture, combined with an independent minimum-flow bypass, can keep outlet temperature and branch pressure within predeclared bands across specified loads and supply temperatures without sustained oscillation, leakage, or unacceptable disturbance of neighboring branches. The rack application, failure behavior, and telltale implementation remain differentiators; passive differential-temperature valve actuation itself does not.","contrastive_claim_falsifier":"The claim fails if the original restriction already meets the declared bands, or if the passive prototype fails those bands relative to it, chatters, responds too slowly, leaks, starves the branch, fails to move toward fail-open on actuator loss, or produces unacceptable shared-header pressure excursions. Evidence that fouling, trapped gas, inadequate pump head, poor thermal interfaces, or localized chip hotspots—not the inherited restriction—is causal also falsifies applicability.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered the proposal directly, historical terminology and patents, official data-center cooling guidance, commercial delta-T controls, and combinations of bulbs, opposed diaphragms, springs, and flow valves. Four opened sources from four publishers were retained, including two official-guidance sources and one first-party product source.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"The problem is partly supported: authoritative guidance confirms that nameplate power is not actual heat release and that flow requirements change with configuration, heat dissipation, and supply temperature. Direct evidence of persistent inherited manual-valve anchoring was not found, so support is not complete.","source_ids":["SRC1","SRC2"]},"distinct_testable_claim":{"status":"PASS","rationale":"After removing the already-disclosed passive differential-temperature mechanism from the novelty claim, the rack-specific water-glycol adaptation, fail-open/minimum-flow behavior, hydraulic interaction, and declared performance bands form a distinct bench-testable claim.","source_ids":["SRC2","SRC3","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"The proposed six-condition isolated-loop comparison plus one actuator-loss test has fixed scope, direct temperature/flow/pressure observations, explicit stopping criteria, and a reversible fixed-orifice comparator. This aligns with recognized load-simulation, valve, flow, pressure, leakage, and failure testing.","source_ids":["SRC2"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"No obvious stop applies to the authorized isolated bench loop if pressure rating, containment, relief, bypass, over-temperature protection, and rollback remain intact. Production connection is properly excluded; passing this gate does not establish production safety or code compliance.","source_ids":["SRC1","SRC2"]}},"screen_survival":false,"world_novelty_boundary":"This coarse public-web screen found a substantial historical collision with the core opposed-bulb differential-temperature valve architecture and a commercial hydronic collision with the control objective. It did not establish that the rack-specific safeguarded adaptation is known or unknown. The bounded search cannot establish world novelty, patentability, freedom to operate, market size, expert acceptance, code approval, production safety, or realized technical or economic value."}