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Energy efficient HVAC design for laboratories in hot and humid environments.

Number: pap. 1015

Author(s) : DOYLE D. L., BEAUDOIN H. R.

Summary

Designing energy efficient laboratories has many challenges. The high exhaust requirements and large equipment loads contribute to energy usage intensities that are five to ten times the energy usage intensities of typical office buildings. These issues are amplified for laboratories in hot and humid climates. Places like Singapore experience extremely hot and humid conditions. All hours of the year require cooling and 100% outside air systems have large latent energy loads. In this paper we will discuss some general strategies for designing high performance, energy efficient laboratory HVAC systems as well as some concepts that apply to hot and humid climates. The air-handling systems usually account for the largest amount of the energy usage in a lab and are therefore the most important component of an energy efficient design. The design airflows should first be reduced as much as possible. Strategies such as reducing the cooling loads in the space, reducing the air exhausted by fume hoods and reducing the required air change rate of the space will be discussed. Demand-controlled ventilation and energy recovery systems can further reduce energy use. The high humidity often requires air to be overcooled to remove moisture, which requires reheat to maintain spaces at temperatures that are comfortable for the occupants. Strategies for reducing reheat include using passive desiccant dehumidification wheels or recovered heat.

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Pages: 10 p.

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Details

  • Original title: Energy efficient HVAC design for laboratories in hot and humid environments.
  • Record ID : 30010437
  • Languages: English
  • Source: Clima 2013. 11th REHVA World Congress and 8th International Conference on Indoor Air Quality, Ventilation and Energy Conservation in Buildings.
  • Publication date: 2013/06/16

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