Effect of LED lighting on the cooling and heating loads in office buildings

Byung Lip Ahn, Cheol Yong Jang, Seung Bok Leigh, Seunghwan Yoo, Hakgeun Jeong

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

LED lighting has the potential to provide energy savings, and in many countries, there are policies to encourage its use owing to its higher efficiency and longer life in comparison to other lighting fixtures. However, since 75-85% of the light electric power in LED lights is still generated as heat, the sole use of LED lighting in a building could have a negative effect on the cooling load. In this paper, we study the heating properties of LED lighting and establish a management strategy to exploit these properties to reduce the energy used for heating and cooling of buildings. Using a simulation program, the energy consumption of the Green Building in Daejeon, Korea, and the virtual building provided by the U.S. Department of Energy (DOE) was computed according for different light fixtures. A control strategy is more applicable to LED lighting than to general fluorescent lighting, especially for the cooling of a building, because the use of a return-air duct and the heat sinks on the LED fixtures allow the heat to be better directed. Deployment of LED lights in combination with such a control strategy can help to increase the energy efficiency of a building.

Original languageEnglish
Pages (from-to)1484-1489
Number of pages6
JournalApplied Energy
Volume113
DOIs
Publication statusPublished - 2014 Jan 1

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Office buildings
Light emitting diodes
Loads (forces)
Lighting
Cooling
heating
cooling
Heating
Lighting fixtures
energy efficiency
Heat sinks
energy
lighting
effect
Ducts
Energy efficiency
Energy conservation
Energy utilization
air
simulation

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Energy(all)

Cite this

Ahn, Byung Lip ; Jang, Cheol Yong ; Leigh, Seung Bok ; Yoo, Seunghwan ; Jeong, Hakgeun. / Effect of LED lighting on the cooling and heating loads in office buildings. In: Applied Energy. 2014 ; Vol. 113. pp. 1484-1489.
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Effect of LED lighting on the cooling and heating loads in office buildings. / Ahn, Byung Lip; Jang, Cheol Yong; Leigh, Seung Bok; Yoo, Seunghwan; Jeong, Hakgeun.

In: Applied Energy, Vol. 113, 01.01.2014, p. 1484-1489.

Research output: Contribution to journalArticle

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