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Figure ES-2. Vapor Space Connection

Engineering estimates for the marketer’s price for different sizes of underground propane tanks based on variants of this basic conceptual design are shown in Table ES-1. Also shown here are estimated tank weights.

Table ES-1. Comparison of Steel, Phase II, and Potential Optimized Composite Tank Costs of Various Volumes

Weight (lb)

480

930

1750

436

733

1325

420

700

1250

Dimensions (inches)

32 (d) 86 (l)

38 (d) 120 (l)

41 (d) 192 (l)

41 (d) 61 (l)

41 (d) 110 (l)

41 (d) 208 (l)

41 (d) 61 (l)

41 (d) 110 (l)

41 (d) 208 (l)

Marketer Cost, US$*

$1230

$1716

$2810

$3676

$4406

$5863

$1700

$2400

$3600

Volume

250 g

500 g

1000 g

250 g

500 g

1000 g

250 g

500 g

1000 g

(g=gallons,

950 l

1900 l

3800 l

950 l

1900 l

3800 l

950 l

1900 l

3800 l

Composite Phase II Design Potential Optimized Costs

Current Design

(Estimated)

  • *

    F.O.B. factory, including combination valve.

Attribute

l=liters)

Steel

Alternative Underground Propane Tank Materials, Phase II—Final Report

v

September 2009 Battelle and Lincoln Composites

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