Heat Storage Materials:
Molten Salt Mix NaCl + NaOh
NaCl: 2165 kg/m³
NaOh: 1250 kg/m³
Specific Heat naCl: 0.88 J/(g·°K)
Specific Heat naOh: 1.488 kJ/(g.°K)
Mixing Weight Ratio: 1: 9
2.165kg/l
1.250kg/l
Latent Heat: 300J/g
Latent Heat: 300kJ/kg
Melting Temperature Range: 204°C to 331.9°C. Talk with the supplier about the mixing ratio.
The idea here is to select and use an heat storage material, whose melting point is such that unused heat that appears at the output of the Burner and Turbine can be collected and pumped back into the Heat Storage (HS).
The specific heat (cp) of a substance at melting is defined to be 0J/kg.°K at melting.
It is the heat that a substance can accept while it is changing from a solid to a liquid and give up again when it is changing from a liquid to a solid that is used as a relevant amount in molten salt heat storage systems.
For Mobile (SHE) Heat Storage Application
Lithium:
Latent Heat Storage: 422kJ/kg
Latent Heat Melting Point li: 181°C
Weight: 530kg/m³
Specific Heat: 3.6KJ/(kg.°K)
Thermal Conductivity: 71W/m
Latent Heat Storage m³ : Ql = (422kJ/kg * 530kg) = 223.67MJ = 223.67MJ/3600s = 61.128kwh
For Stationary Application
Sodium Hydrate:
Latent Heat Storage: 209.2kJ/kg; 300MJ/m³
Latent Heat Melting Point: 318°C
Specific Heat: 3.93KJ/(kg.°K)
300MJ/3600s = 83.333kwh
Sodium Nitrates or Potassium Nitrate:
Latent Heat Storage: 209.2kJ/kg; 300MJ/m³
Latent Heat Melting Point: 250°C
Specific Heat: 4,184 J/(kg.°K)
Stable up to: 617°C
Heat Transfer Buffer Storage Temperatures
Ammonium nitrate (NH4NO3)
Latent Heat Melting Point: 170°C
Sodium bisulfate (NaHSO4)
Latent Heat Melting Point: 186°C.
These salts dissolve in water.
To mix them, dissolve in water, then evaporate the water, but one can also get the correct mixture from a supplier.
Check the prices for Africa and make your own decisions.
Weight/m³
kg /m³ NaNO2 NaOH
2261 kg/m³ 2130 kg/m³
2.261g/cm³ 2.130g/cm³
Total Weight: 39%NaNO2 _61%NaOH = 2181.1Kg/m³
Specific Heat 39%NaNO2 + 61%NaOH
kJ/kg NaNO2 NaOH Average
1.733kJ/kg.K 0.868kJ/kg-K 1.21kJ/(kg.K)
Starting amount of heat needed to bring m³ 39%NaNO2 + 61%NaOH up to 127°C
In this context, the amount of heat required to bring 1m³ 39%NaNO2 _61%NaOH from 25°C up to 127°C will be called the "Primer Heat".
Primer_Heat = m *cp * T2- T1
mass m: Weight = 39%NaNO2 _61%NaOH = 2181.1Kg/m³
Specific Heat: cp: 1.21kJ/(kg.K)
T1 = 25°C
T2 = 227°C
Temperature Difference Tdiff: 227°C - 25°C = 202°K
Primer_Heat = 2181.1Kg/m³ * 1.21kJ/(kg.K) * 202°K = 533.1MW/m³ = 148.08KWh
Total amount of useable energy into m³ 39%NaNO2 + 61%NaOH at melting between 127°C to 337°C
Latent Heat: 294J/g
Latent Heat: 294kJ/kg
Total Heat/m³: TLh = 2181.1 kg/m³ * 294kJ/kg = 641. 24MJ/m³ = TLh/3600 = 178.12 kWh/m³
Barium Ba(OH)2 and ( Ba(OH)2·8H2O) Data:
Barium Hydroxide Ba(OH)2
Heat Storage Capacity @ Melting: 655MJ/m³
Heat Storage Capacity: 265.7 kJ/kg (572 kJ/l)
Latent Heat Melting Point: 78ºC
Boiling Points: 780ºC in octahydrate form
Weight to Volume: 1000kg = 0.4588m³
Note the heat storage capacity at melting of this substance.
BaC20H30 Melting Point: 230ºC
Melting Point Energy
NaCl: NaOh
Some Prices For Heat Storage Materials
Properties of Metals
Heat conductivity of iron: 80.2 W/ (m·K)
Heat conductivity of mild steel: 45 W/(m.K)
Heat conductivity of graphite: 200-500 W/(m.K).
Heat conductivity of copper: 398 W/(m.K)
Heat conductivity of aluminum: 235 W/(m.K)
Tensile Strength mild steel: 440 N/mm² = 440 Mpa = 44kg/mm²
Tensile Strength copper: 210MPa = 21kg/mm²
Tensile Strength mild aluminum: 90MPa = 9kg/mm²
Graphite Properties
Molten Salt Mix NaCl + NaOh
NaCl: 2165 kg/m³
NaOh: 1250 kg/m³
Specific Heat naCl: 0.88 J/(g·°K)
Specific Heat naOh: 1.488 kJ/(g.°K)
Mixing Weight Ratio: 1: 9
2.165kg/l
1.250kg/l
Latent Heat: 300J/g
Latent Heat: 300kJ/kg
Melting Temperature Range: 204°C to 331.9°C. Talk with the supplier about the mixing ratio.
The idea here is to select and use an heat storage material, whose melting point is such that unused heat that appears at the output of the Burner and Turbine can be collected and pumped back into the Heat Storage (HS).
The specific heat (cp) of a substance at melting is defined to be 0J/kg.°K at melting.
It is the heat that a substance can accept while it is changing from a solid to a liquid and give up again when it is changing from a liquid to a solid that is used as a relevant amount in molten salt heat storage systems.
For Mobile (SHE) Heat Storage Application
Lithium:
Latent Heat Storage: 422kJ/kg
Latent Heat Melting Point li: 181°C
Weight: 530kg/m³
Specific Heat: 3.6KJ/(kg.°K)
Thermal Conductivity: 71W/m
Latent Heat Storage m³ : Ql = (422kJ/kg * 530kg) = 223.67MJ = 223.67MJ/3600s = 61.128kwh
For Stationary Application
Sodium Hydrate:
Latent Heat Storage: 209.2kJ/kg; 300MJ/m³
Latent Heat Melting Point: 318°C
Specific Heat: 3.93KJ/(kg.°K)
300MJ/3600s = 83.333kwh
Sodium Nitrates or Potassium Nitrate:
Latent Heat Storage: 209.2kJ/kg; 300MJ/m³
Latent Heat Melting Point: 250°C
Specific Heat: 4,184 J/(kg.°K)
Stable up to: 617°C
Heat Transfer Buffer Storage Temperatures
Ammonium nitrate (NH4NO3)
Latent Heat Melting Point: 170°C
Sodium bisulfate (NaHSO4)
Latent Heat Melting Point: 186°C.
These salts dissolve in water.
To mix them, dissolve in water, then evaporate the water, but one can also get the correct mixture from a supplier.
Check the prices for Africa and make your own decisions.
Weight/m³
kg /m³ NaNO2 NaOH
2261 kg/m³ 2130 kg/m³
2.261g/cm³ 2.130g/cm³
Total Weight: 39%NaNO2 _61%NaOH = 2181.1Kg/m³
Specific Heat 39%NaNO2 + 61%NaOH
kJ/kg NaNO2 NaOH Average
1.733kJ/kg.K 0.868kJ/kg-K 1.21kJ/(kg.K)
Starting amount of heat needed to bring m³ 39%NaNO2 + 61%NaOH up to 127°C
In this context, the amount of heat required to bring 1m³ 39%NaNO2 _61%NaOH from 25°C up to 127°C will be called the "Primer Heat".
Primer_Heat = m *cp * T2- T1
mass m: Weight = 39%NaNO2 _61%NaOH = 2181.1Kg/m³
Specific Heat: cp: 1.21kJ/(kg.K)
T1 = 25°C
T2 = 227°C
Temperature Difference Tdiff: 227°C - 25°C = 202°K
Primer_Heat = 2181.1Kg/m³ * 1.21kJ/(kg.K) * 202°K = 533.1MW/m³ = 148.08KWh
Total amount of useable energy into m³ 39%NaNO2 + 61%NaOH at melting between 127°C to 337°C
Latent Heat: 294J/g
Latent Heat: 294kJ/kg
Total Heat/m³: TLh = 2181.1 kg/m³ * 294kJ/kg = 641. 24MJ/m³ = TLh/3600 = 178.12 kWh/m³
Barium Ba(OH)2 and ( Ba(OH)2·8H2O) Data:
Barium Hydroxide Ba(OH)2
Heat Storage Capacity @ Melting: 655MJ/m³
Heat Storage Capacity: 265.7 kJ/kg (572 kJ/l)
Latent Heat Melting Point: 78ºC
Boiling Points: 780ºC in octahydrate form
Weight to Volume: 1000kg = 0.4588m³
Note the heat storage capacity at melting of this substance.
BaC20H30 Melting Point: 230ºC
Melting Point Energy
NaCl: NaOh
Some Prices For Heat Storage Materials
Properties of Metals
Heat conductivity of iron: 80.2 W/ (m·K)
Heat conductivity of mild steel: 45 W/(m.K)
Heat conductivity of graphite: 200-500 W/(m.K).
Heat conductivity of copper: 398 W/(m.K)
Heat conductivity of aluminum: 235 W/(m.K)
Tensile Strength mild steel: 440 N/mm² = 440 Mpa = 44kg/mm²
Tensile Strength copper: 210MPa = 21kg/mm²
Tensile Strength mild aluminum: 90MPa = 9kg/mm²
Graphite Properties
