1. J.K.Lee, S.C.Kim, O.C.Hyun, Y.C.Ahn, P.H.Kweon, M.J.Lee, and Y.H.Kim (1996), "Performance Evaluation of Electrostatically Augumented Air Filter", The 7th International Conference on Indoor Air Quality and Climate, INDOOR AIR '96, July 21-26, Nagoya, Japan, pp.139-144
2. Jae-Keun Lee, J.E.Lee, Y.C.Ahn, and B.S.Heo (1997), "Development of Wet Separation for the Removal of Unburned Carbon from Fly Ash", First International Symposium & Korea-Australia Joint Symposium, Innovative Environmental Technology Institute, Feb.20-21, Pusan Nat.Univ., pp.399-406
3. Jae-Keun Lee, J.H.Ku, J.E.Lee, S.C.Kim, Y.C.Ahn, J.H.Shin, S.H.Choung (1998), "An Experimental Study of Electrostatic Precipitator Plate Rapping and Reentrainment", 7th International Conference on Electrostatic Precipitation(ICESP Ⅶ), HILTON Hotel, Kyong Ju, Korea, Sep.20-25
4. Jae-Keun Lee, Seong-Chan Kim, Jin-Hyouk Shin, Young-Chull Ahn, Doo-Hyun Kim, and Min-Chul Cho (1999), "Pilot Test Results of Centrifugal and Triboelectrostatic Separation Technology for the Removal of Unburned Carbon from Fly Ash for Ash Recycling", Fifth International Symposium on East Asian Recycling Technology(EARTH'99), Tsukuba, Japan, June 15-17, pp.228-231.
5. Shin, J.H., Y.C.Ahn, J.H.Ku, J.H.Lee, J.H.Jung and J.K.Lee (1999), "A Study on Analysis of Coating Characteristics and Deposition Efficiency Enhancement for Plastic Substrate in Electrostatic Powder Coating", The 3rd PACIFIC COATING FORUM, Seoul, Korea, October 27-30, pp.251-255.
6. Shin, J.H., Y.C.Ahn, J.H.Lee, J.H.Jung, S.C.Ha and J.K.Lee (1999), "Analysis of the Coating Mechanism and Deposition Efficiency for Plastic Substrate in Electrostatic Powder Coating", 1st Cross Straits Symposium on Materials, Energy and Environmental Sciences, Kyushu University, Japan, November 1-2, pp.57-58.
7. Ahn, Y.C., J.H.Shin, S.G Yoon, J.H.Koo and J.K.Lee (1999), "A Study on the Grinding Characteristics of PET Plastics in the Disk Mill", 1st Cross Straits Symposium on Materials, Energy and Environmental Sciences, Kyushu University, Japan, November 1-2, pp.63-64.
8. Park, Chan-Jung, Hee-Soo Shin, Young-Chul Ahn, Jung-Eun Lee, and Jae-Keun Lee (2000), "A Study on the Removal of Water Content in the Sewage Sludge Using the Electrodewatering System", Proceeding of the 2nd Cross Strats Symposium on Materials, Energy, and Environmental Science, Pusan National University, Korea, November, 2-3 pp.145-146.
9. Young Chull Ahn, Byeong Soo Heo, Tae Hoon Kim, Dang Yeob Jang, Jea Keun Lee, Woo Sik Choi, (2000), "Development of a Sludge Thermal-Drying System and Its Performance", Asia Powder Technology 2000, Bangkok, Thailand, December, 13-15, pp.162.
10. J.H.SHIN, Y.C.AHN, S.C.HA and J.K.LEE (2001), "Effect of Metal Backing for Improving the Coating Efficiency of Plastic Substrates in Electostatic Powder Coating", 2nd Asian Aerosol Conference, Busan, Korea, July 1-4, pp.413-414.
11. Y.C.AHN, B.S.Heo, T.H.KIM, D.Y.JANG, Y.J.KIM, S.H.JUNG and W.S.HONG (2001), "Performance Evaluation of a Centrifugal Classifier on the Field Application", 2nd Asian Aerosol Conference, Busan, Korea, July 1-4, pp.141-142.
12. S.C.KIM, J.H.SHIN, Y.C.AHN, D.H.KIM, J.Y.LEE, and J.K.LEE (2002), "CHARGING MEASUREMENTS OF TRIBOELECTROSTATICALLY CHARGED SILICA AND GLASSY CARBON PARTICLES USING A PMAS SYSTEM", 6th International Aerosol Conference, Taipei, Taiwan, Sep.9-13, pp.1167-1168.
13. Y.C.AHN, S.C.KIM, C.G.LEE, G.T.KIM, D.S.LEE and J.K.LEE, (2002), "A STUDY ON PARTICLE-GAS VELOCITY CORRELATION IN GAS FLOWS LADEN WITH FINE PARTICLES", 6th International Aerosol Conference, Taipei, Taiwan, Sep.9-13, pp.1221-1222.
14. Y.C.Ahn, J.K.Lee, J.M.Cho, H.S.Shin, T.W.Kang, S.C.Ha, H.U.Lee, S.P.Ahn, D.H.Youn, (2003), "AIR-SIDE PARTICULATE FOULING OF HEAT EXCHANGERS IN AIR CONDITIONER EVAPORATORS USED", The 4th international Symposium on HVAC, Beijing, China, October 9-11, pp.916-923.
15. Young-Chull Ahn, Gil-Tae Kim, Dong-Soo Lee, Seung-Kon Kim, and Jae-Keun Lee, (2004), "A Study on the Removal Characteristics of Fine Dust Particles using Metal Fiber Filters", 9th World Filtration Congress, Hyatt Regency, New Orleans, USA, Apr.18-24, Paper No.141-12.
16. G.T.Kim, J.H.Shin, J.S.Lee, Y.C.Ahn, Y.J.Hwang, K.H.Jeong, J.K.Lee, and C.M.Sung, (2004), "Development of the electrospun nanofiber media for filtration application: Effect of Moisture", 9th World Filtration Congress, Hyatt Regency, New Orleans, USA, Apr.18-24, Paper No.141-11.
17. G.T.Kim, J.S.Lee, J.H.Shin, Y.C.Ahn, K.H.Jeong, C.M.Sung and J.K.Lee, (2004), "Effect of Humidity on the Microstructures of Electrospun Polystyrene Nanofibers", Microscopy & Microanalysis 2004, August 1-5, Savannah (U.S.A).
18. J.K.Lee, Y.C.Ahn, S.K.Park, G.T.Kim, (2004), "Developed of High Efficiency Nanofibers Made of Nanofibers", 2004 International Nanotech Symposium & Exhibition in Korea, 8월 24일-27일 pp.141.
19. Yu-Jin Hwang, Jin-Wook Jung, Hyeong-Soo Park, Young-Chull Ahn, Jae-Keun Lee, (2005), "Stability and thermal conductivity of nanofluids", The Sixth KSME-JSME Thermal and Fluids Engineering Conference, Ramada Plaza Hotel, Jeju, Korea, March 20-23.
20. Young-Chull Ahn, Hee-Soo Shin, Jai-Kwon Lee, Chang-Shin Yeo, Sang-Hyun Byun, Jae-Keun Lee, Tae-Wook Kang, Kam-Gyu Lee, and Hyo-Soon Park, (2005), "Measurement of Indoor Air Quality for Ventilation with the Existence of Occupants in Schools", PNU-LGE Tianjin Joint Workshop 2005, LG Electronics Tianjin Appliances Co.,LTD.Tianjin, China, July 20-22, pp.29-34.
21. H.S.Shin, Y.C.Ahn, J.K.Lee, T.W.Kang, K.G.Lee, H.S.Park, (2005), "Measurement of Indoor Air Quality for Ventilation with the Existence of Occupants in Schools", Indoor Air 2005, Beijing, China, September 4-9.
22. Y.C.Ahn, G.T.Kim, S.I.Cheong, J.K.Lee, K.G.Lee, (2006), "Design and Performance Evaluation of Plasma Air Cleaning Systems for Removing Yellow Sand Dust", 1st YSRIM, Fukuoka, Japan, Jan.18-20.
23. Young Chull Ahn, Gil Tae KIM, Yu Jin Hwang, Seong Ir Cheong, Jae Keun Lee, (2006) "An Experimental Study of the Air-side Particulate Fouling in Fin-and-tube Heat exchangers of Air conditioners", The 3rd Asian Conference on Refrigeration and Air conditioning, Gyeongju, Korea, May 21-23
24. Jae Keun LEE, Sang Won CHO, Hong Seok KIM, Young-Chull AHN and Jung Eun LEE, (2006) "Performance Evaluation of Nano-Lubricants at Thrust Slide-Bearing of Scroll Compressors", The 3rd Asian Conference on Refrigeration and Air-conditioning, Gyeongju, Korea, May 21-23
25. Gil-Tae Kim, Yu-Jin Hwang, Chang-Gun Lee, Seong-Ir Cheong, Hee-Soo Shin, Young-Chull Ahn, and Jae-Keun Lee, (2006), "The Performance of Nylon 6 Nanofilters for Removing Nano-Particles", 2006 International Aerosol Conference, St.Paul, Minnesota, USA, Sep., 10-15, 317-318
26. S.I.Cheong, Y.C.Ahn, Y.M.Jeong, J.K.Lee, H.U.Lee, S.C.Ha, (2007), "Analysis of the Air-Side Particulate Fouling Characteristics in Fin-and-Tube Heat Exchangers of Air Conditioners", the Proceedings of YSRIM 2007, Jan.23-25, Shanghai, China, pp.281-288.
27. G.Kim, D.Kim, S.Jung, J.Jung, J.Lee, Y.Ahn, (2007), "Performance Evaluation of Filter for HVAC Using of Electrospinning Process", the Proceedings of YSRIM 2007, Jan.23-25, Shanghai, China, pp.443-447.
28. Ji Hwan Jeong, Lae Sung Kim, Jae Keun Lee, Man Yeong Ha, Kui Soon Kim, Young Cheol Ahn, (2007), REVIEW OF HEAT EXCHANGER STUDIES FOR HIGH-EFFICIENCY GAS TURBINES, ASME Turbo Expo 2007: Power for Land, Sea and Air, Proceedings of GT2007, May 14-17, Montreal, Canada, GT2007-28071
29. J.W.Kim, Y.C.Ahn*, G.T.Kim, S.I.Cheong, (2007), "Development of nano porous ceramic filter for the collection of nano particles", 2007 International Nanotech Symposium & Exhibition in Korea, Aug.29-31, pp.338.( Best Poster Award )
30. Jong-Won Kim, Young-Chull Ahn, (2008), "Development of nano structures for HEPA type Breathing Wall", 7th International Conference on Sustainable Energy Technologies, Seoul, Korea, Sep.24-27.
31. Young-Chull Ahn1, Jong-Won Kim, Heekyu Choi, (2008), "Development of Ceramic Structures for HEPA Type Natural Ventilation System", ICCHT2008 - 4th International Conference on Cooling and Heating Technologies.Jinhae, Korea, Oct.28-31.
32. J.W.Kim, and Y.C.Ahn*, (2009), "Development of the Porous Construction Materials for the Improvement of the Indooor Air Quality", the Proceedings of YSRIM 2009, Jan.29-30, Kumamoto Japan, pp.61-67.
33. B.K.Yi, H.J.Jeong, and Y.C.Ahn, 2009, Development of Nano Ceramic Filter for the Removal of Ultra Fine Particles, Proceedings of the International Conference on Fluid and Thermal Energy Conversion, Tongyeong, Korea, Dec.7-10, pp.382-388.
34. B.K.Yi, H.J.Jeong, Y.K.Huh, Y.C.Ahn, 2010, Analysis of Pressure Difference under Several Conditions in Flat Type Apartment, The Proceedings of YSRIM(the Yellow Sea Rim International Exchange Meeting on Building Environment and Energy), Feb.27-Mar.1, Shanghai, China.
35. H.J.Jeong, B.K.Yi, Y.C.Ahn, 2010, A Study on the Barriers of Evacuation Stairs and the Effect of Evacuation in a Flat Type Apartment, The Proceedings of YSRIM(the Yellow Sea Rim International Exchange Meeting on Building Environment and Energy), Feb.27-Mar.1, Shanghai, China.
36. Byeong-Kwon Yi, Young-Chull Ahn, 2010, A study on the vertical sectional exhaust characteristics from kitchens using a vertical shaft, the 5th international conference on cooling and heating technologies, Dec.9-11, Sasana Budaya Ganesa Institut Teknologi Bandung(ITB), Bandung, Indonesia, pp.81 ( Best Paper Award )
37. Tae-Kun Lim, Byung-Heon Jeon, Sung-Hak Jung, Soon-Chang Yang, Young-Chull Ahn, 2011, Heat and mass transfer in a heat recovery ventilator using high efficiency and normal spacers, the 7th international conference on fluid and thermal energy conversion, Sep.24-27, Zhengzhou, China, pp.123-130 ( Best Paper Award )
38. Soon-Chang Yang, Tae-Kyoo Jun, Tae-Kun Lim, Young-Chull Ahn, 2011, A study on the thermal performance of thermosyphone inserted vacuum tube type solar heat collector, the 7th international conference on fluid and thermal energy conversion, Sep.24-27, Zhengzhou, China, pp.425-429
39. Jae-Ik Cho, Ming-Yang Liu, Soon-Chang Yang, Young-Chull Ahn, 2011, Development of a filter performance calculator based on the chronological use, the 7th international conference on fluid and thermal energy conversion, Sep.24-27, Zhengzhou, China, pp.249-256
40. Ming Yang Liu, Soon Chang Yang, Young Chull Ahn, 2012, A study of filter performance and life estimation based on the chronological use and the effective thickness, Healthy Building 2012(10th International Conference), 8-13, July 2012, Brisbane Australia.
41. Jae Ik Cho, Young Chull Ahn, 2012, A study on the current use of filters for water purifier, Healthy Building 2012(10th International Conference), 8-13, July 2012, Brisbane Australia.(학생좌장)
42. Tae-Kun Lim, Byung-Heon Jeon, Sung-Hak Jung, Soon-Chang Yang, Young-Chull Ahn, 2011, Heat and mass transfer in a heat recovery ventilator using high efficiency and normal spacers, the 7th international conference on fluid and thermal energy conversion, Sep. 24-27, Zhengzhou, China, pp.123-130 (Best Paper Award)
43. Soon-Chang Yang, Tae-Kyoo Jun, Tae-Kun Lim, Young-Chull Ahn, 2011, A study on the thermal performance of thermosyphone inserted vacuum tube type solar heat collector, the 7th international conference on fluid and thermal energy conversion, Sep. 24-27, Zhengzhou, China, pp.425-429
44. Jae-Ik Cho, Ming-Yang Liu, Soon-Chang Yang, Young-Chull Ahn, 2011, Development of a filter performance calculator based on the chronological use, the 7th international conference on fluid and thermal energy conversion, Sep. 24-27, Zhengzhou, China, pp.249-256
45. Jae-Ik Cho, Young-Chull Ahn, 2012, A study on the current use of filters for water purifier, YSRIM Japan
46. Ming Yang Liu, Soon Chang Yang, Young Chull Ahn, 2012, A study of filter performance and life estimation based on the chronological use and the effective thickness, Healthy Building 2012(10th International Conference), 8-13, July 2012, Brisbane Australia.
47. Jae Ik Cho, Young Chull Ahn, 2012, A study on the current use of filters for water purifier, Healthy Building 2012(10th International Conference), 8-13, July 2012, Brisbane Australia.(학생좌장)
48. Youngchull Ahn, Taekeun Lim, Byeongheon Jeon, Jongwon Kim, Sunghak Jung, 2012, Characteristic analysis of a heat recovery ventilator according to the changes of core material, COBEE2012(2nd International Conference on Building Energy and Environment), University of Colorado Boulder, US, Aug. 1-4.
49. Ming-yang Liu, Young-chull Ahn, 2012, A study on the effect of relative humidity to the filtration efficiency in a HVAC system, 11th International Conference on Sustainable Energy Technologies, Sep. 2-5, Vancouver, Canada
50. Jae-Ik Cho, Young-Chull Ahn, 2012, Development of a low energy consuming and environmental friendly filter for water purification, 11th International Conference on Sustainable Energy Technologies, Sep. 2-5, Vancouver, Canada
51. Jae-Hun Oh, Hye-Ryeon Ahn, Soon-Chang Yang, Yu-Mi Song, Young-Ki Huh, Young-Chull Ahn, 2012, A feasibility study on the development of eco-planting blocks using bottom ash, 11th International Conference on Sustainable Energy Technologies, Sep. 2-5, Vancouver, Canada
52. Jae-Ik Cho, Young-Chull Ahn, 2012, Development of a low energy consuming filter for water purification, the 6th International Conference on Cooling & Heating Technologies, Xi'an Jiaotong University, China, Nov. 9-12, 2012.
53. Byungheon Jeon, Jongwon Kim, Seungkap Lee, Youngju Lee, Young-Chull Ahn, 2012, A study on the dew condensation according to the operational conditions of heat recovery ventilator, the 6th International Conference on Cooling & Heating Technologies, Xi'an Jiaotong University, China, Nov. 9-12, 2012.
54. Young Chull Ahn, Jae Ik Cho, Si Eun Kim, Ah Hee Jeong, Gil Tae Kim, 2013, Development and evaluation of Nano Electret Filters for Household Water Treatment, ICOME(International Conference on Mechanical Engineering), Sep. 12-14, Lombok Indonesia.
55. Young Chull Ahn, Si Eun Kim, Dong Wan Kim, 2014, Analysis of temperature reduction regarding green roof application in the existing building, The Internationl Exchange Workshop associated with the 50th anniversary of SHASE Kinki Chapter, October. 31, Osaka, Japan.
56. Young Chull Ahn, Ah Hee Jeong, Byung Heon Jeon, Jung Sub Seo, 2014, Performance evaluation of Air-bubble Sheets as a thermal insulator for window system, The Internationl Exchange Workshop associated with the 50th anniversary of SHASE Kinki Chapter, October. 31, Osaka, Japan.
57. Young Chull Ahn, Jong Wook Moon, Si Eun Kim, Jae Hun Oh, Young Ki Huh, 2014, A study on the thermal effects of Green Roof System in an existing building, Indoor Air 2014(The 13th International Conference on Indoor Air Quality and Climate), July. 7-12, Hongkong.
58. Young Chull Ahn, Ah Hee Jeong, Byung Heon Jeon, Jung Sub Seo, 2014, Performance evaluation of Air-bubble Sheets as a thermal insulator for window system, Indoor Air 2014(The 13th International Conference on Indoor Air Quality and Climate), July. 7-12, Hongkong.
59. Ah Hee Jeong, Study on the selecting of air-vents location considering charateristics and distribution of fine particles in an office, The 2nd Research exchange meeting between Pusan National University and Osaka University, Oct. 29-30, 2014, Osaka University, Japan.
60. Si Eun Kim, A study on the green roof system by bottom ash vegetation epiphytic block, The 2nd Research exchange meeting between Pusan National University and Osaka University, Oct. 29-30, 2014, Osaka University, Japan.
61. Seong Gu Yeo, Eun Ji Kim, Young Chull Ahn, 2018, Analysis of convective heat transfer coefficient for prediction of ice making performance, International Research Conference on Sustainable Development through Engineering Technology and Applied Sciences, Sep. 03-04, Aqueen Hotel, Singapore. Society of computer, engineering technology & applied science
62. Eun Ji Kim, Seong Gu Yeo, Young Chull Ahn, 2018, A study on the optimal time difference of priority alarm system in case of fire, International Research Conference on Sustainable Development through Engineering Technology and Applied Sciences, Sep. 03-04, Aqueen Hotel, Singapore. Society of computer, engineering technology & applied science
63. Jung Sub Seo, Young Mo kang, Jong Won Kim, Byung Hun Jeon, Dong In Kang, Young Chull Ahn, A Study on Performance Change of Heat Recovery Ventilator Using Prefilter and HEPA filters, A-175, ZEMCH(Zero Energy Mass Custom Home) 2019 International Conference, 26-28. Nov. Korea Institute of Science and Technology Center pp. 29-35
64. Soo Kwang Yang, Dong In Kang, Yu Jeong Ryu, Young Chull Ahn, Mechanism Analysis of Seawater Desalination System Using Heat Pump, A-176, ZEMCH(Zero Energy Mass Custom Home) 2019 International Conference, 26-28. Nov. Korea Institute of Science and Technology Center. pp. 380-384