Compare the error for the scale-up of a reciprocating compressor by a factor of five using the six-tenths rule in place of the cost exponent given in Table 7.3.

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Table 7.3 Typical Values of Cost Exponents for a Selection of Process Equipment Range of Equipment Type Correlation Reciprocating compressor with motor drive Heat exchanger shell-and-tube carbon steel Vertical tank carbon steel Centrifugal blower Jacketed kettle glass lined 0.75 to 1490 1.9 to 1860 0.4 to 76 0.24 to 71 0.2 to 3.8 Units of Capacity kW m² m³ std m³/s m³ Cost Exponent n 0.84 0.59 0.30 0.60 0.48