• Journal of the Korean housing association
• /
• v.15 no.1
• /
• pp.51-62
• /
• 2004

Koreans had started moving to Yunhaju in Russia for escaping from the tyrannical rule and famine in 1860's in Korea. It had been veiled and nearly known about Korean's life there because of social and political situation of Russia until the Perestroyka. This study examined the dwellings of Korean Diaspora in Yunhaju through visiting their houses and having an interview. Results of research were as following: 1) Russian traditional houses which Koreans built was followed by Russian style basically and Koreans used the space slightly different way. Korean Diaspora have been adopted Russian life style with keeping their own traditional way of living. 2) Some Korean Diaspora still have been kept traditional heating system 'Ondol' in their houses until now in Yunhaju. Moreover over, it is known that people of Central Asia prefer to set 'Ondol' recently as a very specific and expensive heating system. 3) Korean's food style in Yunhaju is the one mixed with Russian, Korean, and Central Asian foods. This study could be a first step to supply for a basic information for studying of Korean Diaspora in Russia and it is needed to take more deep research in other areas in Russia.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.26 no.12
• /
• pp.572-578
• /
• 2014

Heating energy was measured in an apartment housing unit with a district heating system, varying the kind of hot water distributors. Ondol coils passing through a living room raised the temperature of the room where the heating was turned off. Including this characteristic of Ondol heating into the modeling, we performed simulations and showed a verification by comparison with the results of measurements. As a result, a main flow control method, which changes hot water flow rate supplied to a housing unit according to the thermal load, can reduce the supplied flow rate and lower the return temperature, compared with a constant flow method. That can result in decreased heat loss in utility-pipe conduits even though the heating energy supplied is almost the same. An outdoor reset control that raises the temperature of the supplied hot water if the outdoor temperature falls has the effect of a quicker response in heating than the reduced flow rate and return temperature.

• International conference on construction engineering and project management
• /
• 2022.06a
• /
• pp.295-303
• /
• 2022

Residential heating systems in South Korea are largely based on the use of ondol pipelines. Heat is transferred to the floor by passing hot water through a metal or plastic pipe buried within the concrete of the floor. Consequently, it is difficult to clean the inside of these pipes after installation. Over time, foreign substances such as scale accumulate in the pipe when the ondol heating method is used for an extended period. Therefore, in the past, pipes were cleaned by removing foreign substances attached to the inside surfaces of the pipes using high-pressure water or by disassembling the pipes and removing foreign substances with chemical agents. Recently, a method for removing foreign substances through the cavitation effect of ultrasound has been proposed. This idea might lead to the development of new technologies for cleaning pipe interiors. Consequently, this study investigated the use of ultrasound to clean pipes embedded in concrete. In this study, devices that generated ultrasonic waves with various frequencies and directions were prepared. After preparing arbitrarily contaminated pipes, the appropriate frequency, output strength, and output direction for each foreign substance were determined through repeated experiments. The results of this experiment could provide important information for future methods of cleaning the interior of ondol piping systems.

• Journal of architectural history
• /
• v.2 no.1 s.3
• /
• pp.25-41
• /
• 1993

This study was made to analyze the housing adjustment phenomenon in the first half of Chosun Dynasty by applying Microsociological approach. By reviewing the housing adjustment theory of Morris and Winter, research model for the period was developed in terms of socioeconomic characteristics, normative housing deficit (=cultural norm-housing condition+family norm), constraints, behavioral propensities, and housing adjustment mechanism with the following results : 1. In the first half of Chosun Dynasty the size of the house, the house site and decorating items were specified by law (cultural norm) according to the social status. Although the law was constraints for the housing phenomenon, it was not applied universally. Frequantly the law was violated by the upper class. By the middle of the Dynasty the family norm became more important for the housing phenomenon than the cultural norm. 2. Efforts were made to practice the Confucianism as a cultural norm in the first half of Chosun Dynasty At that time Husband-Living-in-Wife's-House was more popular than Wife-Living-in-Husband's-House. Because the customs were against the Confucianism, the latter was encouraged by law. But it did not change. Instead a compromised system became popular in the middle of the Dynasty. The house shrine was practiced to increase the symbolism of the family, which, in turn, exerted influences in deciding the housing site (cultural norm). These cultural norm was not accepted as the family norm untill the second half of the Dynasty. These trends forced the man and woman use separate areas of the house, and formulated a hierarchic positions within a house. 3. It was shown that the settlement of Confucianism as a family norm was closely related to the popularization of the Ondol system in the house, which functioned as one of the behavioral propensities to encourage diversity of space for many purposes. Though the Ondol system was accepted as a useful heating system earlier, this became more popular in the middle of the Dynasty because the housing pattern with Ondol fitted very well with a large family system with patriarchism. Ondol system for one or two rooms substituted Ondol for all rooms in the second half of the Dynasty. 4. From the beginning of the Dynasty housing adjustment of the family was determined by the social status and by law (cultural norm). Within this cultural norm each family decided its adjustment mechanism according to its economic ability (family norm). Family norm was more important factor than the cultural norm to determine the micro-space pattern in the house. But this period witnessed the formations of new conditions by the ruling class's efforts to implement new ethics for hierarchy and sexual discrimination. According to these conditions the Confucianism overruled the family norm in the later period.

• 한국기계연구소 소보
• /
• s.14
• /
• pp.3-15
• /
• 1985

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 1998.08a
• /
• pp.88-89
• /
• 1998

• 전기의세계
• /
• v.20 no.3
• /
• pp.47-52
• /
• 1971

본 고에서는 심야전력의 판매촉진과 아울러 주택용 전력판매증진을 위하여 동절기에 이용되는 난방시설로서 전기온돌의 개발 가능성여부를 검토하고자 한다.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.5 no.4
• /
• pp.295-305
• /
• 1993

Thermal performance of test cell of model hot water Ondol house was simulated by equivalence heat resistence and heat capacity method. In this method wall was replaced by two equivalence and one heat capacity. This method enables to simulate the variation of temperature of each element of model house. The effect of pipe diameter, pitch of pipe and with or without consideration of inter-radiation between wall surfaces on the energy consumption rate were investgated. Results show that radiations between the ground surface of room and wall surfaces contribute to the heating of room air by reducing the convection heat loss through the wall surfaces.

• Architectural research
• /
• v.16 no.3
• /
• pp.101-107
• /
• 2014

This paper focuses on Wajiro Kon (1888-1973) and his architectural efforts on theorizing Korean minka in the early 1920s. Wajiro Kon's unique phenomenological approach, so different from the positivistic analyses of his contemporaries, evident in his meticulous sketches and vivid descriptions, helped him theorize how the craft-oriented architectural development of Korean minka were shaped by people's everyday lives. In particular, he found that ondol had developed in various and complex ways, creating differences between the northern and southern Korean regions. Moreover, Kon identified the practical improvements in Korean minka made by inventive, creative people. However, the paper demonstrates that in this process, the new understanding retained the dual perspective of Korean minka as not only environmentally formulated, craft-oriented artifacts but also as re-formed objects that should be improved through an interplay with external factors.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.3 no.1
• /
• pp.69-77
• /
• 1991

"Ondol" have been used in residential buildings for several thousands years in Korea. The traditional "Ondol" heating system of Korea has changed into the radiant heating system with piping embedded in floors or slabs. This study reports the results of transient experiments performed on a radiant heating system and enclosure. The paper presents some details of the thermal response of slab-heated buildings to varying patterns of heat input. Furthermore, I'll compare the results of experimentation with the ones of the numerical simulation by using the explicit and implicit forms of the finite difference methods (FDM). The study has contributed to testify the feasibility of numerical analysis, and the understanding of the transient behavior of radiant heating panels and enclosure exposed to this type of heating system.