Voices: Energy Saver

‘Tis The Season To Save Energy

Seasonality can play an important part in your energy-saving strategy

By Alan Rossiter, Energy Saver Columnist
Dec 11, 2018

A few years ago, I participated in a design review for a gas plant [1]. The process featured a large distillation column in which the design basis included both summer and winter cases — but with operating conditions unchanged. The utility balances, however, showed the cooling water would be 35°F cooler in winter than in summer. This potentially allows the column overhead to operate at significantly reduced temperatures in the winter months by maintaining the cooling water flow rate, but with the water at its seasonally lower temperature.

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