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
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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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Thermal Battery Power Output Using ORC or Supercritical CO₂ Turbine Generator at 40,000 BTU/kWh By converting thermal energy stored in a sand-salt thermal battery through an ORC or supercritical CO₂ turbine, a standard 40-foot container can produce nearly 1,250 kWh of electricity. Learn how this system performs over short and long discharge durations using a 40,000 BTU/kWh heat rate.---Thermal Battery Electricity Output Using ORC or Supercritical CO₂ TurbinesA 40-foot shipping container filled with a 50/50 mix of sand and salt can serve as a high-capacity thermal battery. By integrating this system with a turbine generator—either an Organic Rankine Cycle (ORC) or a supercritical CO₂ expander—the stored heat can be converted into usable electricity.In this analysis, we calculate the expected power generation based on a standard heat rate of 40,000 BTU per kilowatt-hour (kWh), which is common for low• to medium-efficiency waste heat recovery turbines.---Stored Thermal EnergyThe container holds approximately 16.95 million BTU of usable thermal energy, based on the thermal mass and a temperature swing from 100°F to 500°F:BTU: 16,947,200Metric equivalent: ≈ 4,965 kWh of heat energy---Heat Rate and Conversion to ElectricityUsing the heat rate of 40,000 BTU/kWh, the maximum potential electric output is:> 16,947,200 BTU ÷ 40,000 BTU/kWh = 423.68 kWhThis is the total electrical energy that can be extracted if the turbine generator maintains a 40,000 BTU/kWh heat rate.---Output by TimeframeTo understand how this energy can be used over time, we calculate the constant power output for 1-hour, 12-hour, and 24-hour periods.1-Hour DischargeTotal Power Output: 423.68 kWhContinuous Output: 423.7 kW12-Hour DischargeTotal Power Output: 423.68 kWhContinuous Output: 35.3 kW24-Hour DischargeTotal Power Output: 423.68 kWhContinuous Output: 17.65 kW---Summary Table| Discharge Duration | Total Electrical Output | Average Power Output || -----------------• | ----------------------• | -------------------• || 1 hour | 423.7 kWh | 423.7 kW || 12 hours | 423.7 kWh | 35.3 kW || 24 hours | 423.7 kWh | 17.65 kW |---ApplicationsThis system is well suited for:Off-grid renewable integrationIndustrial waste heat reuseGrid peak shavingEnergy arbitrage (charging from cheap heat, discharging during high demand)---ConclusionWith a 40,000 BTU/kWh heat rate turbine, a single thermal battery made from a 40-foot shipping container filled with sand and salt can generate approximately 423.7 kWh of electricity. The power output can be tuned to deliver high peak power for short durations or a stable baseline output over extended periods such as 12 or 24 hours. This setup is scalable and can serve as a cornerstone for thermal energy-to-electricity systems in industrial or grid-scale applications. |
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Thermal Battery as Hydraulic Energy Source Assessing your concept of using a thermal battery (sand-salt mixture in a 40-foot container) to heat CO₂ to supercritical conditions and then drive a hydraulic pump, we can evaluate:1. Available thermal energy2. CO₂ heating and expansion capacity3. Mechanical output in terms of hydraulic horsepower (HP) and gallons per minute (GPM)4. Feasibility for 1-hour, 12-hour, and 24-hour continuous discharge---1. Thermal Energy Storage RecapFrom your optimized container setup:Stored thermal energy:≈ 16.95 million BTU≈ 4,965 kWh≈ 17.9 billion joules (MJ: 17,900)---2. CO₂ Expansion to Drive Hydraulic PumpSupercritical CO₂ Key Properties:Critical point: \~31°C (88°F) and 1,070 psiOperating target: \~500°F (260°C), \~2,000–3,000 psiExpansion drives turbine or piston, which powers a hydraulic pumpLet’s assume:CO₂ loop runs through a high-temperature heat exchanger inside the thermal batterySupercritical CO₂ drives an expander (piston or turbine)Expander is mechanically coupled to a hydraulic pump---3. Efficiency AssumptionsWe’ll break the energy flow into conversion steps:| Step | Process | Efficiency Estimate || ----------• | ----------------------------• | --------------------• || A | Heat → CO₂ mechanical energy | 20–25% || B | Mechanical → hydraulic energy | 90% || Overall | Thermal → hydraulic output | \~20% x 0.9 = 18% |---4. Hydraulic Power Output CalculationsTotal available mechanical energy:18% of 16.95 million BTU =≈ 3.05 million BTU →≈ 894 kWh≈ 3.22 billion joulesConvert to horsepower-hours:1 HP = 746 watts894 kWh = 1,198 HP-hours---5. Hydraulic Output ScenariosWe can now divide output over 1-hour, 12-hour, and 24-hour operation windows:| Duration | Power Output (HP) | Power Output (kW) || -------• | ----------------• | ----------------• || 1 hour | 1,198 HP | 894 kW || 12 hours | 100 HP | 74.5 kW || 24 hours | 50 HP | 37.3 kW |---6. Gallons per Minute (GPM) EquivalentHydraulic power in HP is given by:> HP = (PSI × GPM) / 1714Assume working pressure:2,000 psiSolve for GPM:> GPM = (HP × 1714) / PSI| Duration | HP | GPM @ 2,000 psi || -------• | ----• | --------------• || 1 hour | 1,198 | 1,027 GPM || 12 hours | 100 | 85 GPM || 24 hours | 50 | 43 GPM |> GPM would double if operating at 1,000 psi, halve at 4,000 psi.---✅ Final AssessmentThermal Battery as Hydraulic Energy Source:Thermal capacity: 16.95 million BTUHydraulic power potential (after 18% conversion efficiency):\~1,198 HP-hours of usable mechanical energyDischarge Flexibility:1-hour burst: \~1,198 HP (\~1,027 GPM @ 2,000 psi)12-hour sustained: 100 HP (\~85 GPM)24-hour sustained: 50 HP (\~43 GPM)---Use Case FitThis setup is ideal for:Off-grid hydraulic applicationsPeak-time power assistIndustrial hydraulic presses or pumpingLoad-leveling with thermal energy storage and mechanical output--- |
| Assessing your concept of using a thermal battery (sand-salt mixture in a 40-foot container) to heat CO₂ to supercritical conditions and then drive a hydraulic pump, we can evaluate:1. Available thermal energy2. CO₂ heating and expansion capacity3. Mechanical output in terms of hydraulic horsepower (HP) and gallons per minute (GPM)4. Feasibility for 1-hour, 12-hour, and 24-hour continuous discharge---1. Thermal Energy Storage RecapFrom your optimized container setup:Stored thermal energy:≈ 16.95 million BTU≈ 4,965 kWh≈ 17.9 billion joules (MJ: 17,900)---2. CO₂ Expansion to Drive Hydraulic PumpSupercritical CO₂ Key Properties:Critical point: \~31°C (88°F) and 1,070 psiOperating target: \~500°F (260°C), \~2,000–3,000 psiExpansion drives turbine or piston, which powers a hydraulic pumpLet’s assume:CO₂ loop runs through a high-temperature heat exchanger inside the thermal batterySupercritical CO₂ drives an expander (piston or turbine)Expander is mechanically coupled to a hydraulic pump---3. Efficiency AssumptionsWe’ll break the energy flow into conversion steps:| Step | Process | Efficiency Estimate || ----------• | ----------------------------• | --------------------• || A | Heat → CO₂ mechanical energy | 20–25% || B | Mechanical → hydraulic energy | 90% || Overall | Thermal → hydraulic output | \~20% x 0.9 = 18% |---4. Hydraulic Power Output CalculationsTotal available mechanical energy:18% of 16.95 million BTU =≈ 3.05 million BTU →≈ 894 kWh≈ 3.22 billion joulesConvert to horsepower-hours:1 HP = 746 watts894 kWh = 1,198 HP-hours---5. Hydraulic Output ScenariosWe can now divide output over 1-hour, 12-hour, and 24-hour operation windows:| Duration | Power Output (HP) | Power Output (kW) || -------• | ----------------• | ----------------• || 1 hour | 1,198 HP | 894 kW || 12 hours | 100 HP | 74.5 kW || 24 hours | 50 HP | 37.3 kW |---6. Gallons per Minute (GPM) EquivalentHydraulic power in HP is given by:> HP = (PSI × GPM) / 1714Assume working pressure:2,000 psiSolve for GPM:> GPM = (HP × 1714) / PSI| Duration | HP | GPM @ 2,000 psi || -------• | ----• | --------------• || 1 hour | 1,198 | 1,027 GPM || 12 hours | 100 | 85 GPM || 24 hours | 50 | 43 GPM |> GPM would double if operating at 1,000 psi, halve at 4,000 psi.---✅ Final AssessmentThermal Battery as Hydraulic Energy Source:Thermal capacity: 16.95 million BTUHydraulic power potential (after 18% conversion efficiency):\~1,198 HP-hours of usable mechanical energyDischarge Flexibility:1-hour burst: \~1,198 HP (\~1,027 GPM @ 2,000 psi)12-hour sustained: 100 HP (\~85 GPM)24-hour sustained: 50 HP (\~43 GPM)---Use Case FitThis setup is ideal for:Off-grid hydraulic applicationsPeak-time power assistIndustrial hydraulic presses or pumpingLoad-leveling with thermal energy storage and mechanical output--- |
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Enhanced Power Output from Thermal Battery Using ORC or Supercritical CO₂ Turbine at 20,000 BTU/kWh Page Title:Enhanced Power Output from Thermal Battery Using ORC or Supercritical CO₂ Turbine at 20,000 BTU/kWhMeta Description:Assess how a sand-salt thermal battery inside a 40-foot shipping container can generate over 840 kWh of electricity using an ORC or supercritical CO₂ turbine with a heat rate of 20,000 BTU per kilowatt-hour. Includes power delivery profiles for 1-hour, 12-hour, and 24-hour discharge cycles.Teaser:Using a turbine generator with a heat rate of 20,000 BTU per kWh, the thermal battery in a 40-foot shipping container can produce more than 840 kWh of electricity. Discover how this high-efficiency conversion method affects power output over different operating durations.---High-Efficiency Thermal Battery Power Generation Using 20,000 BTU/kWh Heat RateA 40-foot shipping container filled with a 50/50 mixture of sand and salt functions as a high-density thermal battery. By coupling this system with a high-efficiency Organic Rankine Cycle (ORC) or supercritical CO₂ turbine, stored thermal energy can be converted into electrical energy. In this article, we evaluate the power output using a heat rate of 20,000 BTU per kilowatt-hour, reflecting an efficient turbine design.---Thermal Energy Storage CapacityFrom earlier analysis:Total thermal energy stored: 16,947,200 BTUMetric equivalent: ≈ 4,965 kWh of thermal energy---Electrical Energy Output at 20,000 BTU/kWhAt a heat rate of 20,000 BTU per kWh, the system converts thermal energy into electricity more efficiently than conventional low-grade systems.> 16,947,200 BTU ÷ 20,000 BTU/kWh = 847.36 kWhThis is the total amount of electricity that can be generated from the thermal battery under these conditions.---Output by Discharge DurationLet’s distribute this energy over several operating timeframes to understand average power output.1-Hour DischargeTotal Power Output: 847.36 kWhContinuous Output: 847.4 kW12-Hour DischargeTotal Power Output: 847.36 kWhContinuous Output: 70.6 kW24-Hour DischargeTotal Power Output: 847.36 kWhContinuous Output: 35.3 kW---Summary Table| Discharge Duration | Total Electrical Output | Average Power Output || -----------------• | ----------------------• | -------------------• || 1 hour | 847.4 kWh | 847.4 kW || 12 hours | 847.4 kWh | 70.6 kW || 24 hours | 847.4 kWh | 35.3 kW |---Real-World ApplicationsThis level of electrical output enables:Medium-scale off-grid or microgrid deploymentIndustrial waste heat repurposingPeak-time power injection from stored thermal energyHigh-efficiency thermal energy storage systems for renewables---ConclusionWith a turbine generator operating at 20,000 BTU per kilowatt-hour, the thermal battery inside a single 40-foot shipping container can yield up to 847.4 kWh of electricity. Whether discharged in one hour at nearly 850 kW, or over 24 hours at a steady 35.3 kW, this setup offers scalable, efficient power output with a high degree of flexibility. It stands as a compelling alternative to chemical batteries for large-scale energy storage using low-grade or stored heat.
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Enhanced Power Output from Thermal Battery Using ORC or Supercritical CO₂ Turbine at 20,000 BTU/kWh Page Title:Enhanced Power Output from Thermal Battery Using ORC or Supercritical CO₂ Turbine at 20,000 BTU/kWhMeta Description:Assess how a sand-salt thermal battery inside a 40-foot shipping container can generate over 840 kWh of electricity using an ORC or supercritical CO₂ turbine with a heat rate of 20,000 BTU per kilowatt-hour. Includes power delivery profiles for 1-hour, 12-hour, and 24-hour discharge cycles.Teaser:Using a turbine generator with a heat rate of 20,000 BTU per kWh, the thermal battery in a 40-foot shipping container can produce more than 840 kWh of electricity. Discover how this high-efficiency conversion method affects power output over different operating durations.---High-Efficiency Thermal Battery Power Generation Using 20,000 BTU/kWh Heat RateA 40-foot shipping container filled with a 50/50 mixture of sand and salt functions as a high-density thermal battery. By coupling this system with a high-efficiency Organic Rankine Cycle (ORC) or supercritical CO₂ turbine, stored thermal energy can be converted into electrical energy. In this article, we evaluate the power output using a heat rate of 20,000 BTU per kilowatt-hour, reflecting an efficient turbine design.---Thermal Energy Storage CapacityFrom earlier analysis:Total thermal energy stored: 16,947,200 BTUMetric equivalent: ≈ 4,965 kWh of thermal energy---Electrical Energy Output at 20,000 BTU/kWhAt a heat rate of 20,000 BTU per kWh, the system converts thermal energy into electricity more efficiently than conventional low-grade systems.> 16,947,200 BTU ÷ 20,000 BTU/kWh = 847.36 kWhThis is the total amount of electricity that can be generated from the thermal battery under these conditions.---Output by Discharge DurationLet’s distribute this energy over several operating timeframes to understand average power output.1-Hour DischargeTotal Power Output: 847.36 kWhContinuous Output: 847.4 kW12-Hour DischargeTotal Power Output: 847.36 kWhContinuous Output: 70.6 kW24-Hour DischargeTotal Power Output: 847.36 kWhContinuous Output: 35.3 kW---Summary Table| Discharge Duration | Total Electrical Output | Average Power Output || -----------------• | ----------------------• | -------------------• || 1 hour | 847.4 kWh | 847.4 kW || 12 hours | 847.4 kWh | 70.6 kW || 24 hours | 847.4 kWh | 35.3 kW |---Real-World ApplicationsThis level of electrical output enables:Medium-scale off-grid or microgrid deploymentIndustrial waste heat repurposingPeak-time power injection from stored thermal energyHigh-efficiency thermal energy storage systems for renewables---ConclusionWith a turbine generator operating at 20,000 BTU per kilowatt-hour, the thermal battery inside a single 40-foot shipping container can yield up to 847.4 kWh of electricity. Whether discharged in one hour at nearly 850 kW, or over 24 hours at a steady 35.3 kW, this setup offers scalable, efficient power output with a high degree of flexibility. It stands as a compelling alternative to chemical batteries for large-scale energy storage using low-grade or stored heat.
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Solar Thermal Battery Drives High-Capacity Chilling for Off-Grid Cooling Page Title:Solar Thermal Battery Drives High-Capacity Chilling for Off-Grid CoolingMeta Description:Discover how a 40-foot sand-salt thermal battery with concentrated solar input can power thermally or electrically driven chillers, delivering over 1,500 tons of cooling-hours—ideal for off-grid or industrial cooling.Teaser:A single thermal battery using sand-salt storage and rooftop solar collectors can provide over 1,500 tons of cooling, delivering up to 127 tons per hour using high-efficiency chillers. This scalable system offers renewable-driven cooling for industrial or remote applications.Solar Thermal Battery as a Renewable Cooling SourceA 40-foot shipping container filled with a 50/50 sand and salt mixture, equipped with concentrated solar panels and internal thermal oil piping, becomes a robust off-grid thermal battery. When paired with a chiller system—either thermally or electrically driven—it delivers substantial and sustained cooling capacity.Two Approaches to CoolingAbsorption Chiller (Thermal-Driven)Uses thermal energy directly via lithium bromide absorption systemCOP: ~0.7Cooling output: ~989 tons of cooling-hoursIdeal for locations where electricity is limitedElectric Chiller (Power-Driven)Uses power generated from heated supercritical CO₂ driving a turbineCOP: ~6.0Cooling output: ~1,525 tons of cooling-hoursDelivers up to 127 tons/hour over 12 hoursCooling Delivery ProfilesSystem Type 1-Hour Burst 12-Hour Avg 24-Hour AvgAbsorption Chiller 989 tons 82.4 tons/hr 41.2 tons/hrElectric Chiller 1,525 tons 127.1 tons/hr 63.5 tons/hrUse CasesData center coolingCold storage in agricultureEmergency or disaster zone chillingIndustrial HVAC in off-grid regionsConclusionThis integrated solar-thermal battery system delivers flexible, scalable cooling power using stored heat and smart conversion technology. Whether you need high-power bursts or round-the-clock chilling, this solution bridges renewable thermal storage with practical cooling demands.
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| To compare the thermal energy density of sand, salt, and a 50/50 sand-salt mixture, we evaluate:1. Density (mass per unit volume)2. Specific heat capacity (energy per unit mass per °C or °F)3. Thermal energy density (energy stored per unit volume per °C or °F)---1. Material Properties| Property | Sand | Salt (NaCl) | 50/50 Mix || ------------------------• | ------• | ----------• | ----------------• || Bulk Density (kg/m³) | \~1,600 | \~1,200 | \~1,400 || Specific Heat (kJ/kg·K) | \~0.80 | \~0.85 | \~0.825 (average) || Specific Heat (BTU/lb·°F) | \~0.19 | \~0.22 | \~0.205 |---2. Thermal Energy Density (per m³)> Thermal Energy Density = Density × Specific HeatMetric (kJ/m³·K):Sand: 1,600 × 0.80 = 1,280 kJ/m³·KSalt: 1,200 × 0.85 = 1,020 kJ/m³·K50/50 Mix: 1,400 × 0.825 = 1,155 kJ/m³·KImperial (BTU/ft³·°F):> Convert using:> 1 kg/m³ × 0.00006243 = lb/ft³> 1 kJ = 0.9478 BTUSand:\~100 lb/ft³ × 0.19 = 19 BTU/ft³·°FSalt:\~75 lb/ft³ × 0.22 = 16.5 BTU/ft³·°F50/50 Mix:\~87.5 lb/ft³ × 0.205 = 17.94 BTU/ft³·°F---✅ Summary: Thermal Energy Density| Material | kJ/m³·K | BTU/ft³·°F || --------• | ------• | ---------• || Sand | 1,280 | 19.0 || Salt | 1,020 | 16.5 || 50/50 Mix | 1,155 | 17.94 |---🟩 ConclusionSand has the highest thermal energy density, due to its higher density.Salt has a slightly higher specific heat but lower bulk density.The 50/50 mix provides a good compromise in thermal properties, ease of handling, and thermal conductivity.For thermal storage, sand or a sand-salt mix is preferable over pure salt for energy density per unit volume. However, salt melts at high temperatures and may offer phase change advantages (not considered here). |
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