• 한국화재소방학회논문지
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• 제32권2호
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• pp.17-23
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• 2018

본 연구에서는 Buckingham 파이 정리를 이용하여 구획 공간에서 화재가 발생한 경우 벽면을 구성하는 재료의 열전도 계수와 내부 온도의 상관관계에 관한 연구를 수행하였다. 이를 위해서 기존 무차원 변수의 주요 인자를 고려하여 발열량, 열전도계수, 구획공간의 체적, 벽면 두께 그리고 대류 열전달 계수의 관계를 분석하였다. 또한, 발열량에 대한 화염에서의 최대 온도 그리고 벽면의 온도를 산출하기 위해서 내화보드를 사용하여 ISO 9705 룸 코너 시험기(Room Corner Tester)의 1/6 크기를 갖는 축소 규모의 구조물을 제작하였으며, 10 cm, 15 cm 그리고 20 cm인 정사각형 화원에 대해서 가솔린 화재실험을 수행하여 국부 지점의 산소 농도와 화염에서의 온도분포를 측정하였다. 그 결과 대류 열전달 계수와 열전도 계수의 변화에 따라서 외벽에서의 온도가 증가하는 조건을 제시하였으며, 발열량 변화에 대한 Buckingham 파이의 무차원 경험식을 도출하였다. 본 연구 결과는 구획 공간에서 외벽 형상 및 열전도 계수의 변화를 고려한 화재 현상을 연구하기 위한 기초 자료의 활용이 가능할 것으로 사료된다.

• 건축역사연구
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• 제18권4호
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• pp.7-23
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• 2009

The "Jeongjagak(丁字閣, T shaped building)" was important building from Goryeo Dynasty to Joseon Dynasty. For long period, the scale and form of the building had been changing bit by bit. The change of building results from the function. As the Jeongjagak accepted the functions of the Yeongakjeon(靈幄殿), there appeared changes of plane. The main function of Yeongakjeon was suppling space for the dead king's coffin. The Yeongakjeon was not built in the first year of King Sukjong(1674). At that time, the Jeongjagak was responsible for the function of the Yeongakjeon as an alternative. Starting from this, the Jeongjagak was used as space for the dead king's coffin. Because the coffin should place on from south to north, it demanded long inner space in south-north direction. Therefore the effort to make enough length in south-north direction was begun from the first year of King Sukjong(1674). In order to solve the problem, the Toigu(退構) was made from the reign of King Sukjong to the 28th year King Youngjo(1852). The Toigu was temporary inner space which was made in one compartment at the Baewichung(拜位廳, the part of the Jeongjagak). But the length of the Jeongjagak's south-north direction was reduced to 61.8m(20尺6寸) at the 33th year of King Youngjo(1857) when the "Gukjosangryebopyon(國朝喪禮補編)" was completed. Also it extended to 84m(28尺) during the reign of King Jeongjo(1774~1800). Following these process of extension and reduction, the length was standardized as 72m(24尺) at the reign of King Sunjo(1800~1834). These facts explains that the main cause of plane change at the Jeongjagak was acceptance of functions that was used as space for the dead king's coffin. Also, the important points of change at the Jeongjagak were the first year of King Sukjong, the 33th year of King Youngjo and the first year of King Sunjo. When it was the first year of King Sukjong and the 33th year of King Youngjo, there were two national funerals. Because of concern about the increasing labor and tax of the nation, the scale of the Jeongjagak was changed to decreasing size. Due to the improvement of drawings and annotation on a Eugwe(儀軌) at the first year of King Sunjo, the size of Jeongjagak was standardized.