A fundamental study of intelligent building envelope systems capable of passive dehumidification and solar heat collection utilizing renewable energy

Haksung Lee, Akihito Ozaki, Myonghyang Lee, Wanghee Cho

Research output: Contribution to journalArticle

Abstract

Experimental studies and simulation analysis were conducted to assess the hygrothermal performance of intelligent roof systems, which perform passive dehumidification in summer and solar heat collection in winter by air circulation through the roof ventilation layer to reduce sensible and latent heat load using solar heat. A high-efficiency air conditioning system separating latent and sensible heat can be developed using fibrous insulation with excellent moisture conditioning properties. The thermodynamic-potential-based fundamental principle of the intelligent skin system, which performs passive dehumidification and solar collection, was explained based on non-equivalent thermodynamics. The performance characteristics of temperature and humidity fluctuations of the intelligent roof were experimentally and numerically demonstrated. This work enables the combined analysis of heat and moisture movement in the envelope system. The experimental and numerical simulation results indicate that significant sensible and latent heat reduction can be achieved by running the system using renewable energy.

Original languageEnglish
Pages (from-to)139-148
Number of pages10
JournalEnergy and Buildings
Volume195
DOIs
Publication statusPublished - Jul 15 2019

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Intelligent buildings
Roofs
Latent heat
Moisture
Thermodynamics
Thermal load
Air conditioning
Ventilation
Insulation
Atmospheric humidity
Skin
Hot Temperature
Computer simulation
Air
Temperature

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

A fundamental study of intelligent building envelope systems capable of passive dehumidification and solar heat collection utilizing renewable energy. / Lee, Haksung; Ozaki, Akihito; Lee, Myonghyang; Cho, Wanghee.

In: Energy and Buildings, Vol. 195, 15.07.2019, p. 139-148.

Research output: Contribution to journalArticle

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