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장문기,리신호,Jang, Moon-Ki,Yulong, Zhang,Zailin, Piao,Rhee, Shin-Ho The Korean Society of Agricultural Engineers 2008 한국농공학회논문집 Vol.50 No.3
The economics of a passive solar heating system (PSHS) with the pebble bed heat storage was evaluated, and the applications of the PSHS were analyzed, in this study. The results are as follows: The heating load, solar heat gain, and stored heat/year of the PSHS in the solar house model were found to be 10,778MJ, 3,438MJ, and 11,682MJ, respectively. The yearly energy expenses of the PSHS and the alternative heating system (conventional coal heating system, CCHS), which uses coal, were found to be USD 1.60/year and USD 60.90/year, respectively, and the yearly expenses of the PSHS were found to be 38 times less than those of the alternative heating system (CCHS). If it will be supposed that the life cycle of the passive solar heating system, according to the results of the LCC analysis in the two systems, is 40 years, the total expenses for the life cycle of the PSHS and the CCHS will be USD 1,431.50 and USD 2,740.00, respectively. The period for the investment payback of the PSHS is six years.
염소이온투과시험을 이용한 콘크리트제품의 강도추정에 관한 연구
장문기 ( Jang Moon Ki ),이정재 ( Lee Jeong Jae ) 한국농공학회 1998 한국농공학회 학술대회초록집 Vol.1998 No.-
In this study, the chloride ion penetration test and the compressive strength test should be done simultaneously on the standard cylinder specimen. And from analyzing the data from those tests, a strength estimation equation with high credibility is to be developed.
증기양생조건이 시멘트 모르타르의 동결융해저항성에 미치는 영향
장문기 ( Jang Moon Ki ),박광수 ( Park Kwang Su ),김관호 ( Kim Kwan Ho ),윤성수 ( Yoon Seong Soo ) 한국농공학회 2001 한국농공학회 학술대회초록집 Vol.2001 No.-
In this study, the characteristics of freezing and thawing resistance, the compressive strength, and the change in height of cement mortar according to a steam and later curing conditions has been studied. To this end, the major test variables include the period of the early curing, curing temperature and the later curing. The strength test as well as volume variousness have been conducted to explore the characteristics of freezing and thawing resistance on the curing conditions. The experimental results can be efficiently used to improve the characteristics of freezing and thawing resistance for concrete products carrying steam curing.
장문기 ( Jang Moon Ki ),이정재 ( Lee Jeong Jae ),윤성수 ( Youn Seong Soo ) 한국농공학회 1999 韓國農工學會誌 : 전원과 자원 Vol.41 No.6
This paper present the strength estimation of precast concrete products by chloride ion penetration method. The relation between the strength of precast concrete product and the ion passing charge is linear and a numerical model of F<sub>ck</sub>=515.96-0.201Q. is proposed. The results show good agreement at about 9.0% error ratio with the estimated model results for real precast concrete product.
사무소 건물에서 화장실의 위생기구 이용 패턴과 적정 기구수 산정을 위한 사례연구
문경환(Moon, Kyeong-Hwan),정광섭(Chung, Kwang-Seop),김영일(Kim, Young-Il),장문기(Jang, Mun-Ki) 대한건축학회 2012 대한건축학회논문집 Vol.28 No.3
During the last decade, an increasing interest in the usage pattern of sanitary fixture at toilet has emerged. The purpose of this paper is to evaluate comprehensively the usage characteristics of sanitary fixture at toilet in office building. In this paper, the interviewing survey of occupant’s responses to the toilet usage were carried out. Interviewing surveys were made of the usage factors such as the usage frequency and the usage time of WC or urinals, and the preference of facilities or appliances at toilet, etc. Furthermore, the number of sanitary fixture at toilet were calculated by queuing theory simulation. The study then suggests the basic data or guideline for assessing the optimum number of sanitary fixture at toilet based on field survey in office building. As the result of this research, the frequency of using toilet was mainly 3 ∼ 5 times per day. And the frequency of women using as higher than men. In addition, the frequency time of using toilet for urinating was 1 ∼ 3 minutes and the frequency time of using toilet for defecating was 3 ∼ 5 minutes. Furthermore, most men preferred toilet which is nearby window but women did not prefer toilet nearby window. According to the research, most men preferred toilet which is nearby window because of ventilating when they smoked. However, most women did not prefer because of the privacy. Finally, most results of this research indicated that the pattern of using toilet did not depend on sex either age excluding the frequency of using toilet per day.
엄성준 ( Eom Seong-jun ),리신호 ( Rhee Shin-ho ),김재식 ( Kim Jai-shik ),장문기 ( Jang Moon-ki ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-
The temperature and humidity of dirt-walled storehouse are observed in order to verify the traditional storehouse (main material : soil) during 7days (4th. Sep ~ 10th. Sep). Because the width of the daily variation of temperature is small as 2.5℃ ~ 5℃, the reduction of energy supply for low temperature is expected. Because the relative humidity is high and it's variation is small (4% ~ 9%), the inner humidity of dirt-walled storehouse is easily maintained above 80% is expected.
김근영 ( Kim Keun-young ),리신호 ( Rhee Shin-ho ),송창섭 ( Song Chang-seob ),주호길 ( Joo Ho-gil ),엄성준 ( Eom Seong-jun ),박종범 ( Park Jong-beom ),장문기 ( Jang Moon-ki ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-
The construction method of a dirt-walled house is studied in order to develop eco-friendly store house. A dirt-walled house is constructed based on wall frame(Korean traditional style). The main material is soil (mud).