• 교육시설
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• 제9권3호
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• pp.13-21
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• 2002

The new design concept for the middle school is developed as the seventh curriculum is published. However, the credible data for a plan study and spatial organization, and the type of rooms, and using area are hardly found. On this background, the purpose of this study is to provide fundamental resources for the design of middle schools and to recognize national status of plan organizations of middle schools with analizing the space and the type of rooms of collecting 150 schools' architectural plan drafted by city, province education office for 4 years(from 1997 to 2000) As a result, we know that although the class size of school is same, the area for school buildings is very diverse. Then, in order to increasing the area and to develop school buildings' quility, the meaning of standard level should be changed urgently minimum size to optimun size.

• 대한설비공학회지:설비저널
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• 제13권4호
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• pp.230-236
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• 1984

This paper presents a method for estimating the useful output of solar D.H.W. system. Heating load calculations, climate data and various conditions are used in this procedure to assess the fraction of the monthly solar energy and the actual solar energy supplied by solar energy for particular system. The design procedure presented in this paper referred to the f-Chart Method. The results of analyzing of this study by Fortran programming are as follows ; 1 . The amount of actual solar energy required to the hot water system is slowly rised to the ascend of tilt angle within the range of $45^{\circ}$, with is decreased since $45^{\circ}$. 2. The fraction of solar energy is superior when collector area is $8.64m^2$. 3. At the tilt angle with the range of $37.6^{\circ}\~45^{\circ}$, the amount of actual solar energy established the best results. 4 Both the fraction of solar energy and the actual solar energy are the most suitable during the storage volume is $300{\iota}$.

• Journal of Biosystems Engineering
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• 제19권3호
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• pp.185-193
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• 1994

Both the wet and dry types of garlic peeling machines are being presently used in domestic garlic processing factory, but the dry type is more popular than the wet type because of higher peeling efficiency. The peeling efficiency of these machines is estimated 50 to 80%, depending on the difference in garlic varieties, physical properties and moisture content of garlic samples. If the peeling time is increased in order to improve the peeling efficiency, the damage on the surface of peeled garlic and the consumption of electric power are also increased. This study was carried out to solve these problems in garlic peeling operation and to obtain the optimun design factor for the friction type separator. The results are summarized as follows : 1. The average friction coefficients of peeled and unpeeled garlic samples were 0.91 and 0.51. respectively, for the acrylic plate, and 0.96 and 0.51, respectively, for the stainless plate. 2. For the inclined acrylic pipe with the pipe length 90 cm, the inclined angle $39^{\circ}$ and the pipe diameter 45-55 mm, the falling time of peeled garlic samples was 0.2 sec, faster than unpeeled garlic samples. 3. For the inclined stainless pipe with the pipe length 90 cm, the inclined angle $34^{\circ}$, $39^{\circ}$ and the pipe diameter pipe 35 mm, the falling time of peeled garlic samples was 0.7 sec, slower than that with the pipe diameter 47mm. 4. The stainless pipe with the pipe length 80~90 cm, the inclined angle $39^{\circ}{\sim}40^{\circ}$ and the pipe diameter 40~50 mm was the most suitable as the material of friction pipe. 5. Experimental garlic peeling machine is composed of garlic sample feeding device, friction stainless pipe and hopper. The peeling efficiency was 81 to 96%, and the separating capacity, 600 gr/min.