Novel Nano-adsorbent Metal-Organic Frameworks (MOFs) for Energy-Efficient Indoor Humidity Control

Research output: Contribution to conferencePaperResearchpeer-review

Abstract

Metal-organic frameworks (MOFs) are a new class of porous materials composed of a threedimensional network of metal ions held in place by multidentate organic molecules. Some MOFs possess the largest surface area, pore volume and lowest framework density among the existing porous solids and have very high water uptake capacity. MIL-100, as one kind of MOFs, has an excellent performance of water sorption due to the large specific surface areas and high porosity.
The paper proposes an innovative application of Metal-organic frameworks MIL-100 as a new kind of moisture adsorbent to control the indoor humidity passively. MOFs can moderate indoor moisture fluctuation, which will greatly reduce the energy consumption of HVAC systems and improve the building energy efficiency. In the paper, microstructure and moisture characterizations of MIL-100 have been carried out. The moisture buffer value (MBV) of MIL100 has been measured and compared to the typical building materials.
The results show that the MBV of MIL-100 is up to 14 g·m-2 · RH-1, which is 42 times higher than diatomite. A lumped model for building latent load simulation has been developed. The energy saving potential by using MOFs in a typical office in different climates was calculated. The results show that MOF adsorbent has a great effect on energy performance (latent load) of buildings in different climates. A 6 m2 MOF wall panel can remove most of the latent load in dry and temperate climates. Another advantage of using MOFs for indoor humidity control lies in the fact that the regeneration of MIL-100 is quite easy due to its low regeneration temperature and unique S-shape isotherms.
Original languageEnglish
Publication date2019
Number of pages7
Publication statusPublished - 2019
Event11th International Symposium on Heating, Ventilation and Air Conditioning - Harbin Institute of Technology, Harbin, China
Duration: 12 Jul 201915 Jul 2019
Conference number: 11

Conference

Conference11th International Symposium on Heating, Ventilation and Air Conditioning
Number11
LocationHarbin Institute of Technology
CountryChina
CityHarbin
Period12/07/201915/07/2019

Keywords

  • Metal-organic framework
  • Nano-adsorbent
  • Moisture buffer value
  • Indoor humidity control
  • Energy saving

Cite this

Zu, K., Qin, M., & Cui, S. (2019). Novel Nano-adsorbent Metal-Organic Frameworks (MOFs) for Energy-Efficient Indoor Humidity Control. Paper presented at 11th International Symposium on Heating, Ventilation and Air Conditioning, Harbin, China.