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Adding more fan power can be a good thing.

Author(s) : MOFFITT R.

Type of article: Article

Summary

As the HVAC industry strives to reduce commercial building energy use, fan power often comes up as a focal point to optimize building performance. However, the goal of minimizing fan energy can be contrary to other methods used to reduce building
energy. One of these goals is to reduce heating and cooling loads introduced by ventilation air. A building's heating and cooling load can be lowered by recovering energy to and from the building exhaust air with an energy recovery exchanger (Figure 1). This
energy exchange comes with an energy cost, static pressure loss across the exchanger that can add to the power required both by the fans supplying conditioned air to the space and the fans exhausting air. The added fan power can be significant and may
lead one to ponder: is the cooling or heating recovered really worth it?

Details

  • Original title: Adding more fan power can be a good thing.
  • Record ID : 30011659
  • Languages: English
  • Source: ASHRAE Journal - vol. 56 - n. 5
  • Publication date: 2014/05

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