Author Notes Table Snafu in Article

Reading over "Playing the Smart Hand" (Jan. 2001, p. 42), I noticed that Table 3, Chiller Algorithm Output, was not the latest one that I had sent with my article revision.The electric chiller calculation that was shown on the table in the magazine was missing the kilowatt/ton in the formula.Kent W.

02/01/2002


Reading over "Playing the Smart Hand" (Jan. 2001, p. 42), I noticed that Table 3, Chiller Algorithm Output, was not the latest one that I had sent with my article revision.

The electric chiller calculation that was shown on the table in the magazine was missing the kilowatt/ton in the formula.

Kent W. Peterson, P.E., Chief Mechanical Engineer and Principal, P2S Engineering, Long Beach, Calif.

Chiller Algorithm Output

Example 1

Example 2

Example 3

Gas ($/therm)

$ 0.35

$ 0.35

$ 0.35

Electric ($/kWh)

$ 0.05

$ 0.12

$ 0.18

Plant Load (Tons)

Best Chiller Combination

Cost/Ton-Hr

Best Chiller Combination

Cost/Ton-Hr

Best Chiller Combination

Cost/Ton-Hr

400

2

$0.031

1

$0.066

1

$0.075

500

2

$0.029

1

$0.057

1

$0.065

600

2

$0.028

2

$0.068

3

$0.089

700

2

$0.028

2

$0.068

3

$0.082

800

2

$0.028

3

$0.066

3

$0.075

900

2

$0.029

3

$0.061

3

$0.069

1,000

5

$0.029

3

$0.057

3

$0.065

1,100

5

$0.029

4

$0.068

4

$0.094

1,200

5

$0.028

4

$0.067

4

$0.093

1,300

5

$0.028

4

$0.066

4

$0.092

1,400

5

$0.028

4

$0.067

6

$0.092

1,500

5

$0.028

6

$0.068

6

$0.090

1,600

5

$0.028

6

$0.067

6

$0.088

1,700

5

$0.028

6

$0.066

6

$0.087

1,800

5

$0.029

6

$0.065

6

$0.086

1,900

5

$0.030

6

$0.065

6

$0.087

2,000

5

$0.031

6

$0.066

6

$0.088





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