INFINITY TURBINE LLC We specialize in designs, plans, licensing, consulting, design services, and surplus spare parts. We no longer manufacture turbines or CO2 systems. More Info...
TEL: +1-608-238-6001 (Chicago Time Zone ) USA
Email: greg@infinityturbine.com
The Six-Year Wall: Why AI Data Centers Can't Get Power— And Who Just Cracked the Problem Hyperscalers are racing to deploy gigawatts of AI compute, but the grid can't keep up and large gas turbines are backordered half a decade out. Infinity Turbine's Cluster Mesh Supercritical CO₂ system offers a radical alternative: modular, silent, trailer-deployable prime power that scales the way software does... More Info
Data Center 40 MW to 100 MW Using IT1000 Supercritical CO2 Gas Turbine Generator Silent Prime Power 1 MW (natural gas, solar thermal, thermal battery heat) ... More Info
Developing Rack Prime Power DC for AI Server Racks Sidecar 48V to 800V DC plus DC buffer for hyperscalers... More Info
The Shift from AC to DC Power Production for AI Data Centers AI data centers are pushing electrical infrastructure to its limits. The traditional AC power chain is no longer optimal for GPU-driven workloads. A DC-native architecture using Infinity Turbine’s Cluster Mesh system offers a path to higher efficiency, lower costs, and scalable modular power—potentially saving tens of millions per year at hyperscale... More Info
SMR and Cluster Mesh Supercritical CO2 Power System for Data Centers and AI Pairing Cluster Mesh Supercritical CO2 Power System with Small Modular Reactors enables hyperscalers to convert high-grade nuclear heat into ultra-efficient, dispatchable power with a compact, modular footprint tailored for AI-scale demand. More Info
ORC and Products Index Infinity Turbine ORC Index... More Info
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Lime Based Thermal Battery Your concept describes a lime-based thermal battery—a thermochemical energy storage system using the calcination and hydration cycle of limestone (CaCO₃/CaO/Ca(OH)₂). This is a scientifically valid and potentially highly effective method for storing and releasing heat energy, especially when powered by concentrated solar or surplus electricity.Cycle Overview: Lime-Based Thermal BatteryCharging Phase (Heat Storage via Calcination):1. Input: Limestone (CaCO₃), heat from concentrated solar or resistive electric source2. Reaction (Endothermic):$$\text{CaCO₃ (s)} \xrightarrow{\Delta \sim 850–950^\circ C} \text{CaO (s)} + \text{CO₂ (g)}$$3. Output: Calcium oxide (CaO) stored as energy-rich material, plus CO₂ (capturable)This step stores thermal energy in the chemical bonds of CaO.Discharging Phase (Heat Release via Hydration):1. Input: Water added to CaO2. Reaction (Exothermic):$$\text{CaO (s)} + \text{H₂O (l)} \rightarrow \text{Ca(OH)₂ (s)} + \text{Heat}$$3. Output: Heat (release), hydrated lime (Ca(OH)₂)This step releases stored heat on demand, ideal for space heating, industrial drying, or steam generation.Thermochemical Efficiency and Capacity| Property | Value (Approximate) || ------------------------------• | ----------------------------------------• || Heat of calcination (input) | \~3.2–3.5 MJ/kg CaCO₃ (\~900–970 kWh/ton) || Heat of hydration (output) | \~1.2–1.4 MJ/kg CaO (\~330–390 kWh/ton) || Energy density | 250–400 kWh/m³ (solid CaO bulk) || Round-trip efficiency | \~35–45% (thermal-to-thermal) || Thermal stability | Months to years (CaO is stable dry) |While not highly efficient like electrochemical batteries, lime thermal batteries excel at large-scale, long-duration heat storage, and have extremely low material cost.Advantages| Benefit | Explanation || ----------------------------• | ------------------------------------------------------------• || Scalable thermal storage | Ideal for megawatt to gigawatt heat banks || Abundant, cheap materials | Limestone is plentiful and non-toxic || Long shelf-life | CaO can be stored indefinitely if dry || CO₂ separability | Can be captured during calcination for reuse or sequestration || Modular design | System can be containerized or silo-based |Challenges and Considerations| Challenge | Solution/Note || ----------------------------• | ------------------------------------------------------------• || High charging temperature | Needs CSP or electric heaters >850°C || CO₂ handling | Must capture or vent gas safely || Hydration control | Hydration is fast and exothermic; must be managed for safety || Material degradation | CaO sintering at high temps may reduce reactivity over cycles || Round-trip loss | Only partial thermal recovery vs input heat |Ideal Use CasesIndustrial heat buffering (e.g., drying, calcination, food processing)District heatingSeasonal thermal energy storageRenewable heat backup for solar thermal plantsCement production integration (lime product becomes feedstock)ConclusionA lime-based thermal battery is a viable, proven, and scalable thermochemical storage solution, especially suited for concentrated solar thermal systems or electrified industrial heat. It stores energy in the chemical decomposition of limestone and releases it upon hydration—producing substantial heat with zero emissions at the point of use. |
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