• Journal of the Korean housing association
• /
• v.14 no.3
• /
• pp.51-56
• /
• 2003

All the outdoor and indoor spaces are connected with each other. The human being moves toward those spaces with temperature fluctuation between the natural and artificial temperature. We conducted an experiment which subjects were wearing the data logger in urban life, and measured 24 hours' exposed temperature and thermal comfort in summer. Results were as follows. 1. Subjects controls their micro climate like this. Most of them(84.6%) get weather information. Fashion(46.2%) and weather(30.8%) are the reasons to select clothes. They spend their time in indoor environment for 84.92% hours of a day and have an air-conditioner(61.5%) in their houses. 2. Temperature fluctuation which subjects were exposed for 24 hours were from 15.6$^{\circ}C$ to 33.8$^{\circ}C$ and average fluctuation was 9.02$^{\circ}C$. The median value of experienced temperature were 26-26.5$^{\circ}C$ and average temperature was 26.18$^{\circ}C$. They experienced cold shock of 3.96 times in a day.

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2006.11a
• /
• pp.488-491
• /
• 2006

There is a principle of Korean Traditional Housing to be adapted for the nature using adaptable shapes to regional climate and easily available materials from the region then these environmentally friendly characteristics keep indoor environment from climate changes. These environmentally friendly characteristics to control indoor environment are very available for contemporary housing in that current issues, housing amenity and wellbeing, have basic goals same with what Korean Traditional Housing has. Therefore, this study begins to suggest fundamental data on indoor thermal environment control elements of Korean Traditional Housing to adapt those into contemporary housing through measurement of indoor thermal environment elements and evaluation on thermal sensation vote for Korean traditional housing. There was 24 hours measurement for indoor and outdoor thermal environmental elements to figure out competence to control indoor thermal environment of Korean Traditional Housing in summer. And subjective tests with 11 subjects was held in the morning, afternoon and night at intervals of 3${\sim}$4 hours to evaluate feeling and amenity for temperature and humidity of users.

• Journal of the Korean housing association
• /
• v.13 no.2
• /
• pp.23-29
• /
• 2002

The purpose of this study was to find out the present condition of indoor thermal environment and to investigate the environmental needs of the elderly through the measurement of outdoor and indoor physical thermal environment elements and the questionary survey of the response to thermal environment in two welfare facilities for the aged in Taegu during summer in 2001. The 38 residents among the total of 134 residents were asked to record their feelings. The result of this study was as follows. The indoor thermal environment in the facilities subjected leer this study was seemed to be comfortable comparatively. But the values of mean indoor temperature measured were about 1.6-1.8$^{\circ}C$ higher than that of a existing domestic research suggested as thermal comfort zones for the elderly during summer, and most residents fe1t somewhat hot in inner space. And the value of indoor relative humidity in one facility was out from the range of comfort humidity(40-70%). Also there were differences by the geographical location between the two.

• Proceedings of the SAREK Conference
• /
• 2009.06a
• /
• pp.527-532
• /
• 2009

Recently, the size of Large Space has been gradually enlarged, according to the development of technology, and because they're used not only for indoor events, but also for various outdoor sports, for example, baseball or soccer. Therefore, there are more demands for developing indoor environment control technology to establish indoor thermal-environment which is proper for different events held in Large Space. This study aims at offering some basic data which can be referred to as the construction guide for the full-scaled construction of Large Space in Korea by arranging the matters to be attended to in designing, and controlling technologies for efficient Large Space design.

• KIEAE Journal
• /
• v.4 no.4
• /
• pp.19-26
• /
• 2004

The purpose of this study was to evaluate the thermal environment of present state and energy consumption and to verify the improvement of energy performance applying free cooling in 5ESS-2000 telecommunication equipment room. Analysis program is used the DOE-2.1E and commercial CFD code, Star-CD. The results of the simulation show that free cooling could reduce 42.1% of cooling energy, increase 48.5% of heating energy because introduced outdoor air must heating and humidification. Therefore free cooling could reduce yearly 34,609.9 kWh of heating and cooling energy and this is reaching to 21.6% of total energy.

• Journal of the Korean Society for Geothermal and Hydrothermal Energy
• /
• v.13 no.2
• /
• pp.1-8
• /
• 2017

Outdoor design temperature is important for selecting proper capacity of heating and cooling systems of a building to implement indoor thermal comfort and save energy consumption. The purpose of this study is to investigate the change of South Korea outdoor design temperature according to the assigned period. When outdoor design temperature of 8 locations calculated with the latest weather data during 2008~2015 years using ASHRAE Bin method are compared to the standard temperature of Ministry of Land, Infrastructure and Transport which is widely used for designing South Korea air-conditioning system at present, the maximum temperature difference becomes $0.97^{\circ}C$ for cooling, and $1.94^{\circ}C$ for heating. Due to wide outdoor temperature variation, update of outdoor design temperature based on recent weather data is recommended.

• Journal of the Korean housing association
• /
• v.25 no.5
• /
• pp.43-50
• /
• 2014

This study assesses thermal environment of detached housing area by classifying buildings types with codes based on spatial characteristics and forms of the detached housing area and applying heat island alleviation measures, especially focused on FBCs (Form-Based Codes). We analyzed shapes and materials of outdoor space with 3D-CAD, which can affect the surface temperature of the case studies, focusing on heat island alleviation measures, and performed space design by applying relevant climate factors to a simulation. As to the 3D surface temperature and HIP distribution, low-temperature distribution was shown in the case studies when we applied heat island alleviation measures. FBCs (Form- Based Codes) is being developed for the purpose of creating new urban environment. This study is significant because it pays attention to the effects of surface temperatures on accumulation of sensible heat and reviews heat island alleviation measures with outdoor space shapes/materials in order to lower surface temperatures, aiming at improved pleasantness of the detached housing area.

• Korea Science and Art Forum
• /
• v.36
• /
• pp.11-22
• /
• 2018

This study recent changes in urban thermal environment caused by climate change generate diverse problems such as urban heat island effects, heat wave, and drought. Under this condition, with the increased perception and expectation of the quality of life, the urban citizens' desire for outdoor activities is increasing. This study conducted the thermal environment analysis focusing on the urban ecological park used by many urban citizens, and also suggested the renovation measures for urban ecological park considering the thermal environment. As the research site, the ecologically-favorable Gildong Ecological Pak with diverse space composition was selected. The measuring items were measured and analyzed by dividing them into thermal environment index and thermal comfort index. In the results of analysis in each type of park space, the forest zone showed the most favorable result. Based on such results, total three kinds of renovation measures for urban ecological park considering the thermal environment were suggested. Through this, the urban ecology park renovation plans were presented in three ways. The results of this study are meaningful in that it can be used as a base material for creating an ecological park considering the thermal environment.

• Journal of the Korean housing association
• /
• v.17 no.5
• /
• pp.9-16
• /
• 2006

The researches on the environmental friendly buildings have carried out on the materials, environmental property, technical elements and etc., and various buildings with these green materials have built and under construction nowadays and became a new trend of the green building. And recently, new building technique which builds the wall with the soil and wood and very easy to construct (called M Earthen House) was introduced as the green building and rapidly propagated. But the research on the indoor climatic characteristics, the ability to control the environmental comfort and the influence to the human beings of these buildings are not sufficiently identified yet. In this paper, the indoor environmental characteristics and the temperature controlling ability of these buildings in summer season were measured and analysed by the Portable Indoor Air Quality Monitor(BABUC/A, LSI) measuring equipments, ana the subjective test on the thermal environment of the subjects were carried out to evaluate the thermal comfort. The results can be summarized as follows; 1) Compared to the outdoor dry bulb temp.($15.4{\sim}28.7^{\circ}C$), the indoor temp. was $19.5{\sim}26.8^{\circ}C$. It showed the temperature controlling ability of the M earthen house was outstanding. And the indoor relative humidity, compared to the outdoor($45.4{\sim}100%$), was $58.1{\sim}76.4%$, it showed the humidity controlling ability of the M earthen house was also outstanding. 2) The thermal environment was evaluated as 'comfort'(neutral-slightly warm) and the humidity was also evaluated as 'comfort'(neutral-slightly humid). So, the results of the physical and subjective evaluation on the indoor thermal comfort in summer season were 'neutral' and 'comfort' coincidently, it was confirmed that the controlling ability of the indoor temperature and humidity of the M earthen house was very excellent.

• Proceeding of Spring/Autumn Annual Conference of KHA
• /
• 2003.11a
• /
• pp.47-51
• /
• 2003

In this paper, we compared the thermal environment in the livingroom with panel heating system of Korea and Japan. The houses are two apartments and two single houses in Korea, and two apartments in Japan. The outdoor temperatures, indoor air temperatures, surface temperatures on floor and humidities were measured. The survey to the residents and recording of operation were also collected. The results were as follows.1. The Korean houses are warmer and drier(approximately 23$^{\circ}$C, 38%) than those of Japan.(approximately 20$^{\circ}$C, 57%). And indoor temperaures of Korean apartment are stabie. 2.The residents in Japan put on and off the switches of the heating system frequently.