tanvir cost
TRANSCRIPT
2795069.4
operating temperature 280-350 oC
PLANT 50 MWeplant conversion efficiency 0.37thermal energy needed 135.135135135 MWtstorage hour 6 hrtotal energy 810.810810811 MWht
2918918918919 JΔT 70 oCutilization factor 80%
storage capacity
Heat to be stored (kWh) 810810.810811 (kWht)Heat to be stored (J) 2918918918919 JSystem Temperature Change (K) 70CpdtPCM 295100 J/kgCpdtShell+ latent heat PTFE 131556 J/kgCpdtNIckel 30800 J/kg
Packed Bed System Radius of PCM (m) 0.0127 m
Nickel thickness 0.00002 mPTFE thickness 0.0005 m Radius of sphere (m) 0.01322 m PCM Vol 8.57589683E-06 m3 Vol. of sphere 9.6730348E-06 m3vol of the sphere with PTFE 9.62919936E-06 m3VOL OF PTFE 1.05330253E-06 m3VOL OF NICKEL 4.38354383E-08 m3sphere Shell Vol 1.09713797E-06 m3PCM Mass in each sphere 0.01636281115 kgShell Mass in each sphere(PTFE) 0.00231726557 kgShell Mass in each sphere(Nickel) 0.00039048608 kgenergy stored in a single capsule 5145.54273013 JNumber of sphere required 709089174.847Total PCM Required 11602692.2532 kgTotal Shell Material Required(PTFE) 1643147.9333 kgTotal Shell Material Required(Nickel 276889.455317 kgVolume occupied by N sphere 6859.04426338 m3Porosity of Bed 0.35Total Volume of Tank 10552.3757898 m3
volume of HTF 3693.33152644 m3 3619464.89590856weight of HTF 3619464.89591 kg
tank specificationheight of the tank(assume) 14 mdiameter 15.4894380651 massuming shell thickness 0.04 mSurface area of Tank on perimeter 684.781252754 m2Roof/Floor Area of Tank 190.3867732661 m2volume of tank perifery 27.3208782702 m3volume of the roofthickness 7.615470930644 m3volume of carboon steel needed 34.9363492008 m3weight of the carbon steel 249445.533294 kg
Cost analysis heighttotal Material cost= 27284380.1803 $ 1
2a) encapsulation cost $27,284,380.18 31. cost of salt $ 4,641,076.90 $ 5.72 42. PTFE cost $16,431,479.33 $ 53.Nickel cost $ 4,153,341.83 $ 64.manufacturing cost(10% assumed $ 2,058,482.12 $ 7b) HTF cost $ - $ 8
9total Container cost 666313.806093 $ 10
111. carbon steel cost $ 196,313.63 $ 122. foundation cost $ 228,464.13 $ 133. insulation cost $ 120,768.02 $ 144. labor cost(10% assumed) $ 120,768.02 $ 15
16over head cost 2795069.39863 $ 17(fitting, valve, instrumental electrical) 18
19total cost 30745763.385 20
21cost of LHTS( encapsulated capsule) 37.9197748415 $/kwhtencapsulation cost($/kWht) 33.6507355556 $/kwht
6464209.55020131
Phase Change Material PropeNaNO3
Density solid 2257 Kg/m3density liquid 1908 Kg/m3Solid Heat Capacity 1780 (J/kg.K)Liquid Heat Capacity (J/kg.K) 1655 (J/kg.K)Latent Heat (J/kg) 176000 j/kg
Melting Point (degC) 306 Deg C
per unit costfoundation cost 1200 $/m2insulation cost(342mm) 176.36 $/m2cost of carbon steel 0.787 $/kgHTF 0 $/kgNaNO3(technical grade) 0.41 $/kgNaNO3 0.4 $/kgPTFE 10 $/kgPTFE 10 $/kgNickel 15 $/kg
2.54 $/kg
manufacturing cost of encapsulation 10% of encapsulation cost
diameter cost($/kWht)57.95 42.27240.98 39.77733.46 38.97128.98 38.58325.91 38.36123.66 38.222
21.905 38.12820.49 38.06319.32 38.016
18.327 37.98217.47 37.95816.73 37.94116.08 37.92815.49 37.90814.96 37.90914.48 37.91114.06 37.91213.66 37.91313.29 37.914
12.959 37.91512.96 37.918
0 1 2 3 4 5 6 7 8 9 1011121314151617181920212236
37
38
39
40
41
42
43
Height (m)
Cos
t ($
/KW
ht)
Shell Material Properties PTFE carbon steel
Density (kg/m3) 2200 densityHeat Capactiy (J/kg.K) 1300 Latent heat (j/kg K)latent heat 40556 J/kg HTFlatent heatHeat Capactiy (J/kg.K) for Nickel 440 j/kg.k densitydensity nickel 8908 kg/m3Referenceshttp://ed.icheme.org/costchem.htmlhttp://www.worldsteelprices.com/Brick Vol 0.0016592m3
390
0 1 2 3 4 5 6 7 8 9 1011121314151617181920212236
37
38
39
40
41
42
43
Height (m)
Cos
t ($
/KW
ht)
0 1 2 3 4 5 6 7 8 9 101112131415161718192021220
5
10
15
20
25
30
35
40
45
50
55
60
Height (m)
Dia
met
er (
m)
7140 kg/m3
980 kg/m3
0 1 2 3 4 5 6 7 8 9 101112131415161718192021220
5
10
15
20
25
30
35
40
45
50
55
60
Height (m)
Dia
met
er (
m)