Lessons learned in modeling underfloor air distribution system

Kwang Ho Lee; Stefano Schiavon; Tom Webster; Fred Bauman; Jingjuan Feng; Tyler Hoyt

Lessons learned in modeling underfloor air distribution system

Kwang Ho Lee, Stefano Schiavon, Tom Webster, Fred Bauman, Jingjuan Feng, Tyler Hoyt

Research output: Contribution to conference › Paper › peer-review

Abstract

Underfloor air distribution system (UFAD) is a mechanical air distribution strategy in which the conditioned air is primarily delivered to the zone from a pressurized plenum through floor-mounted diffusers. It has several potential advantages compared to conventional overhead (OH) mixing systems. However, most of the energy simulation programs widely used by the industry are not able to represent two distinct features of UFAD systems: room air stratification and the underfloor supply plenum. The situation has been improved with the development of a UFAD module in EnergyPlus. The Center for the Built Environment developed the modeling methods, tested them extensively, and conducted numerous studies of UFAD energy performance. This paper summarizes lessons learned related to UFAD specific issues such as thermal decay, sizing, terminal units, room air stratification and thermal comfort.

Original language	English
Pages	2904-2910
Number of pages	7
Publication status	Published - 2011
Externally published	Yes
Event	12th Conference of International Building Performance Simulation Association Building Simulation 2011, BS 2011 - Sydney, NSW, Australia Duration: 2011 Nov 14 → 2011 Nov 16

Conference

Conference	12th Conference of International Building Performance Simulation Association Building Simulation 2011, BS 2011
Country/Territory	Australia
City	Sydney, NSW
Period	11/11/14 → 11/11/16

ASJC Scopus subject areas

Computer Science Applications
Building and Construction
Architecture
Modelling and Simulation

Cite this

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abstract = "Underfloor air distribution system (UFAD) is a mechanical air distribution strategy in which the conditioned air is primarily delivered to the zone from a pressurized plenum through floor-mounted diffusers. It has several potential advantages compared to conventional overhead (OH) mixing systems. However, most of the energy simulation programs widely used by the industry are not able to represent two distinct features of UFAD systems: room air stratification and the underfloor supply plenum. The situation has been improved with the development of a UFAD module in EnergyPlus. The Center for the Built Environment developed the modeling methods, tested them extensively, and conducted numerous studies of UFAD energy performance. This paper summarizes lessons learned related to UFAD specific issues such as thermal decay, sizing, terminal units, room air stratification and thermal comfort.",

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AU - Lee, Kwang Ho

AU - Schiavon, Stefano

AU - Webster, Tom

AU - Bauman, Fred

AU - Feng, Jingjuan

AU - Hoyt, Tyler

PY - 2011

Y1 - 2011

N2 - Underfloor air distribution system (UFAD) is a mechanical air distribution strategy in which the conditioned air is primarily delivered to the zone from a pressurized plenum through floor-mounted diffusers. It has several potential advantages compared to conventional overhead (OH) mixing systems. However, most of the energy simulation programs widely used by the industry are not able to represent two distinct features of UFAD systems: room air stratification and the underfloor supply plenum. The situation has been improved with the development of a UFAD module in EnergyPlus. The Center for the Built Environment developed the modeling methods, tested them extensively, and conducted numerous studies of UFAD energy performance. This paper summarizes lessons learned related to UFAD specific issues such as thermal decay, sizing, terminal units, room air stratification and thermal comfort.

AB - Underfloor air distribution system (UFAD) is a mechanical air distribution strategy in which the conditioned air is primarily delivered to the zone from a pressurized plenum through floor-mounted diffusers. It has several potential advantages compared to conventional overhead (OH) mixing systems. However, most of the energy simulation programs widely used by the industry are not able to represent two distinct features of UFAD systems: room air stratification and the underfloor supply plenum. The situation has been improved with the development of a UFAD module in EnergyPlus. The Center for the Built Environment developed the modeling methods, tested them extensively, and conducted numerous studies of UFAD energy performance. This paper summarizes lessons learned related to UFAD specific issues such as thermal decay, sizing, terminal units, room air stratification and thermal comfort.

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T2 - 12th Conference of International Building Performance Simulation Association Building Simulation 2011, BS 2011

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ER -

Lessons learned in modeling underfloor air distribution system

Abstract

Conference

ASJC Scopus subject areas

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