Residential Humidifying Element Made of Cellulose and PET Composite

Title & Authors
Residential Humidifying Element Made of Cellulose and PET Composite
Kim, Nae-Hyun;

Abstract
Humidifiers are used to control indoor humidity. Element-type humidifiers have the advantages of simple structure and low energy consumption, and Japanese products have been widely used for the humidifying elements. In this study, a new humidifying element made of cellulose and PET was developed, and the performance was compared with that of a Japanese element. The mass transfer rates and pressure drops were measured for an element installed at the entrance of a suction-type wind tunnel. The humidification efficiency of the new element was 2 to 4% greater and the pressure drop was 23 to 32% smaller compared to the Japanese element. The mass transfer effectiveness ($\small{j_m/f}$) of the new element is also 5 to 28% higher. However, the water absorption capacity was smaller than that of the Japanese element, meaning further development is needed.
Keywords
Cellulose;Humidifying element;PET(Polyethylene Terephthalate);Performance test;
Language
Korean
Cited by
References
1.
I. H. Kim, K. Y. Kim and D. K. Kim, "Characteristics of bio-aerosol generation of household humidifiers by user practices", Environ. Health, Vol. 38, pp. 503-509, 2012.

2.
T. W. Kim, M. Kim, G. T. Kim, D. Y. Kim, B. Youn, D. K. Kim and Y. W. Han, "A theoretical study on the performance of humidification element," Proc. Summer Annual Conf., SAREK, pp. 163-166, 2015.

3.
M. Barsegar, M. Layeghi, G. Ebrahimi, Y. Hamseh and M. Khorasani, "Experimental evaluction of the perfomence of cellulosic pas made of Kraft and NSCC corrugated papers as evaporative media", Energy Convestion ovel Maragement, Vol.54, pp.24-29, 2012.

4.
J. K. Jain and D. A. Hindoliya, "Experimental performance of new evaporative cooling pad materials", Sustainable Cities and Society, Vol 1. pp. 252-256, 2011. DOI: http://dx.doi.org/10.1016/j.scs.2011.07.005

5.
C. M. Liao, S. Singh and T. S. Wang, "Characterising the performance of alternative evaporative cooling media in thermal environmental control application", J. Envir, Sci. Health, Vol 33, No 7, pp.1391-1417, 1998. DOI: http://dx.doi.org/10.1080/10934529809376795

6.
C. M. Liao and K. H. Chiu, "Wisd tunnel modeling the system performance of alternative cooling pads in Taiwan region", Build. Environ. Vol. 37, No. 2 pp. 77-87, 2002. DOI: http://dx.doi.org/10.1016/S0360-1323(00)00098-6

7.
B. R. Baliga and R. R. Azrak, Laminar fully developed flow and heat transfer in triangular plate-fin ducts, J. Heat Transfer, Vol. 108, pp. 24-32, 1986. DOI: http://dx.doi.org/10.1115/1.3246900

8.
Zhang, L. Z., Heat and mass transfer in plate-fin sinusoidal passages with vapor permeable wall meterials, Int. J. Heat Mass Transfer, Vol. 51, pp. 618-629, 2008. DOI: http://dx.doi.org/10.1016/j.ijheatmasstransfer.2007.04.050

9.
Kim, N.-H., Performance Comparison between indirect evaporative cooler and regenerative evaporative cooler made of plastic/paper, Journal of the Korea Academia-Industrial Cooperation Society, Vol. 17, No. 1, pp. 88-98, 2016. DOI: http://dx.doi.org/10.5762/KAIS.2016.17.1.88

10.
ASHRAE Standard 41.1, Standard method for temperature measurement, ASHRAE, 1986.

11.
ASHRAE Standard 41.2, Standard method for laboratory air-flow measurement, ASHRAE, 1986.

12.
KARSE B 0050:2010, Indoor Humidifier.

13.
ASHRAE Standard 41.5, Standard measurement guide, engineering analysis of experimental data, ASHRAE, 1986.

14.
J. J, Lee, An Experimental Study on the Dehumidification Effectiveness for Operating Conditions of a Desiccant Rotor, Master's Thesis, Kookmin University, Republic of Korea.

15.
A. F. Mills, Basic Heat and Mass Transfer, Irwin Pub., 1995.

16.
R. K. Shah and A. L. London, Laminar Flow Forced Convection in Ducts, Academic Press, 1978.