$18^{\circ}C$ 환경에서 축전지형 발바닥가열기 착용 피험자의 온열반응

정근주,오근숙,Jung, Gun-Joo,Oh, Geun-Sug 대한건축학회 2012 대한건축학회논문집 Vol.28 No.6

For the building energy conservation, the energy authorities recommended that the manager of building should keep the indoor temperature below $18^{\circ}C$ in the public spaces, in the large scale building during heating season. The occupants in the spaces don't feel the thermal comfort because Predicted mean vote(PMV) of the spaces temperature below $18^{\circ}C$ is approximately -1.0(slightly cool). Recently, the companies of wears supply the rechargeable heating insole with the lithium ion battery to the people in the cold environment. This research aim is to present of thermal responses when the occupant wearing the rechargeable heating insole in the spaces temperature below $18^{\circ}C$ through it experiment on the thermal responses of subjects wearing rechargeable heating insole as well as it evaluate on the variation of thermal responses of subjects in the climate chamber. The variations were Thermal sensation vote(TSV) with ASHRAE 7 and 11 scales, Mean skin temperature(MST) with ISO 9886-2004, Sole skin temperature(SST) of the subjects as well as PMV of environmental chamber. The research presents that TSV-7scale, TSV-11scale, MST of the subjects wearing heating insole were not increasing during the experiments. As contrast this, SST of the subjects were $1.6^{\circ}C$ higher than the subjects not wearing heating insole. In conclusion, the rechargeable heating insole with the lithium ion battery influence the SST increasing but it can't influence the whole body thermal response at the $18^{\circ}C$ environment.

오피스텔 모델건물의 생애주기비용 분석에 의한 다층유리창 경제성 비교

정근주,Jung Gun-Joo 한국주거학회 2006 한국주거학회 논문집 Vol.17 No.4

The purpose of this study was to suggest ways on reducing the cooling and heating energy cost of the officetel building with the multiple glazing windows according to Life Cycle Costing. This study consisted of an hour-by hour energy simulation program and further data from the EnergyPlus V1-2-2 to the four pane type windows that were applied with 2 low-e polyester film and krypton gas to the officetel model building. It was determined that the four panes type windows that had 2 low-e polyester film and krypton gas applied to, them showed a cooling and heating cost reduction over traditional double glazed windows that were filled with air. According to this study, as well as the information from chart 4.5 and the LCC it was determined that the present value of the four panes of windows that had 2 low-e polyester film and krypton gas applied to them showed. a 11.4% reduction in heating and cooling in comparison to the traditional double glazed windows that were filled with air.

부산지역 외기온도 및 착의량에 따른 쾌적범위 조사 연구

정근주(Jung, Gun-Joo),이규남(Rhee, Kyu-Nam) 한국건축친환경설비학회 2016 한국건축친환경설비학회 논문집 Vol.10 No.6

Occupants’ clothing level is an important factor to thermal comfort, which is also affected by dry-bulb temperature, relative humidity, mean radiant temperature, air velocity and metabolic rate. As occupants’ clothing behavior is dependent on the seasonal variation of outdoor air temperature, the proper set-temperature for heating and cooling needs to be determined with the consideration of the seasonal variation of the clothing level. However, set-temperatures for summer (26℃) and winter (22℃) are specified as fixed values in most regulations on heating and cooling of office buildings. In this study, the correlation between mean monthly outdoor temperature (MMOT) and clothing level was investigated. Based on the correlation, dry-bulb temperatures meeting comfort ranges were suggested depending on the clothing level. The MMOT was defined with the 06:00 AM outdoor air temperature using meteorological data for past 12 years in Busan, while the clothing level was determined by conducting surveys targeting undergraduate students. The results show that MMOT at 6:00 AM is 0.84~23.88℃, the outdoor clothing level is 1.56~0.41 Clo and the indoor clothing level is 1.15~0.38 Clo. The correlation between clothing level and MMOT can be expressed with linear regression: y(Clo)=-0.0499x(MMOT)+1.5523, R²=0.8923 for outdoor clothing, and y(Clo)=-0.0305x(MMOT)+1.1779, R²=0.7976 for indoor clothing. Under comfortable condition (PMV±0.5), acceptable dry-bulb temperature depending on the clothing level is 16.65~27.20℃ for outdoor clothing and 19.45~27.35℃ for indoor clothing. The suggested dry-bulb temperature can be used as set-temperature for heating and cooling.

확장도일법과 정부간기후변화패널 기준에 의한 그린빌딩 평가용 에너지 및 공해 기간부하 추정도구 구축에 관한 연구

정근주(Jung. Gun-joo),김동완(Kim. Don-wan),임영빈(Im. Young-bin) 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1

The purpose of this study was offer to a significant element of the rating process for the green performance of the green building by that construction of the estimation tool to the period energy load and air pollution load for the rating of the green building using by EDD(Expanded Degree Day) method and ERFLH(Equivalent Rated Full Load Hours)method and IPCC(Inter-Government Climate Change)' s rules. The significant purpose for the builded of the green building was reduce to the energy consumption and air pollution, therefor the quantitative rating for the energy consumption and air pollution was very important, but it's calculation was depended on the simulation method, because it's rating was executed to design and construction phase. The result of hour-by-hour energy simulation program has a low accidential errors, but you needs very much accumulate to the data base and the times and a constant efforts. The other hand, EDD method has much accidential errors, but it was so simple method therefor expected to speedy rating for green performances. It method was base on the factors; envelop heat loss, solar heat gain, internal heat gain, ventilation heat loss, power capacity of equipment, running time and the like. A constructed tool has two algorithms, first it was estimation to the energy consumption of period for the green building using by EDD method and ERFLH method, and second it was estimation to the air pollution using by IPCC's air pollutant estimation rules. You will be expected to achieve to rating result of simplify for the quantitative green performances of the green building using by a constructed tool.

그린빌딩 환경성능 평가도구의 평가항목별 가중치 조사연구

정근주(Jung Gun-joo),김동완(Kim Dong-wan),임영빈(Im Young-bin) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

The purpose of this research was to examine and suggest any improvement for rating tool in terms of environmental performance of the green building. As determine from this study it was found that the green building has low emission in terms of both energy consumption and atmosphere pollution. The weighting point for Globe Environment Conservation Department and it's categories consist of that energy consumption and atmosphere pollution is low than Health and Amenity Department, and insufficiency of it's explanation of categories. This facts is low effectiveness to guidance for environmental performance of the green building. Next time study plan is to Life Cycle Assessment Process and Construction to Rating program of Expert system for the purpose of effectiveness and clearness to environmental performance rating tool of the green building.

탄소세 적용에 따른 건물용도별 에너지비용 영향 분석

정근주(Jung Gun-Joo),오근숙(Oh Geun-Sug),임영빈(Im Young-Bin) 한국건축친환경설비학회 2008 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-

Recently, the member states of European Union and some countries levy the carbon tax(CT) which approximately 3~150 US dollar per ton of CO₂. May be a few years after, South Korea government will have to levy the CT to the energy consumption fields for reduction of GHG because South Korea will not evade the Annex-I level at 2013. The building energy researcher should be effort to CT reduction in the building operation phase through the study as economic evaluation on the renewable energy system in the building. This research were a preliminary study of above which the estimation on the carbon tax influence of the energy cost in the use groups of building. This research using by the data of annual building energy consumption per area(Mcal/㎡year) in South Korea, and IPCC's GHG estimation rule, the other countries CT level. The influence of CT on the building energy was different level through the building use group because each building use group consumes different level of the running energy and different energies as electric power, city gases. In conclusion, if CT will be levied 10,000~15,000 won per ton of CO₂ in korea, the all group's average annual energy cost will rise up 630~9,450(Won/㎡year), the office building group's annual energy cost will rise up 76 0~11,400(Won/㎡year), the commercial building group's annual energy cost will rise up 1,050~15,750(Won/㎡year), the education building group's annual energy cost will rise up 390~5,850(Won/㎡year), the hotel building group's annual energy cost will rise up 1,650~24,750(Won/㎡year), the hospital building group's annual energy cost will rise up 1,270~19,050(Won/㎡year), the telecommunication building group's annual energy cost will rise up 1,760~26,400(Won/㎡year), the apartment building group's annual energy cost will rise up 510~7,650(Won/㎡year).

여름철 주간 실제 보행 피험자의 피부온도 측정 실험

정근주(Jung Gun-Joo) 한국건축친환경설비학회 2010 한국건축친환경설비학회 논문집 Vol.4 No.1

Most pedestrians suffer from the heat stress when they are walking on the town street in summer day. The heat stress of human body at the street influence on the human activities such as the student performance, the productivity, etc. in building. Therefore, the research about reduction of heat stress for pedestrian is an important work. The researchers carried out so many issues about thermal environments in the building in world wide. In contrast, there seems to be the poor publishing about the reduction of heat stress for the pedestrian. In the summer day, the streets are so hot because density of sun radiation is so high, the air temperature of surrounding is high. The street trees is a good material for the sun shade in the street. In this research, we survey on two thermal environments of streets. First street has no tree and second one has high density trees. The purpose of this research is to provide the raw data for heat stress reduction research and the reduction method of heat stress for the pedestrian who is walking on the town street in summer day, through that survey on Mean Skin Temperature(MST) and Thermal Sensation Vote(TSV) for the pedestrian subject on the street in summer day in Busan Korea. In conclusion, The pedestrian subject answers "warm" in the street of high density trees. In contrast, the subject answers "hot or very hot" in the street of no tree. MSTs of pedestrian subject was 33.6℃ in the street of high density trees, 34.1℃ in the street of no tree.

28℃냉방 실내에서 얼음부착 자연형냉각재킷의 열쾌적 특성

정근주(Jung, Gun-Joo) 한국건축친환경설비학회 2011 한국건축친환경설비학회 논문집 Vol.5 No.4

For the building energy saving, Korean Prime Minister recommended that the room temperature keep above 28℃ during cooling season in the public facilities. If the facility manager would keep the room’s temperature to the extent, Predicted mean vote(PMV), Percentage of predicted dissatisfied(PPD) with ISO-7730 in the room were approximately 1.2(“slightly warm”), 35%, respectively. The previous research developed the passive cooling jacket(PCJ) with reflection louver and ventilation clothes, and it attached ice packs on the PCJ of which name is ICEPCJ for the human body cooling. The purpose of this research is to improve the thermal comfort with ICEPCJ in the room controlled within 28℃ through the experiment with subjects who are wearing clothes. The research measured MST(Mean skin temperature) and thermal environment parameters, and it asked ASHRAE TSV(Thermal sensation vote 7scale) and DISC(Thermal discomfort 11scale) for the 6 voluntary subjects who are each subject wearing ICPCJ, PCJ, TTJ(Traditional textile jacket) in due sequence. Factors are measured in the experiment room where the controlled conditions were DBT 28(℃), RH 65%, air velocity 0.05(m/sec). In this experiment, TSVs and DISCs of subjects who were wearing ICEPCJ were approximately 0.67 lower than who are wearing PCJ, and 1.83 lower than when wearing TTJ. MST of subjects when wearing ICEPCJ were approximately 0.45℃ lower than when wearing PCJ, and 0.64℃ lower than when wearing TTJ. In conclusion, the ICEPCJ in this research can improve the thermal comfort in the room temperature controlled with 28℃ .

수열원 히트펌프용 열가소성수지 코팅 STS주름관의 열관류 특성

정근주(Jung, Gun-Joo),이규남(Rhee, Kyu-Nam),장형문(Zhang, Xinwen) 한국건축친환경설비학회 2018 한국건축친환경설비학회 논문집 Vol.12 No.4

Recently, high density poly ethylene (HDPE) tube has been utilized in surface water source heat pump (SWSHP) as a surface water heat exchanger (SWHE). Stainless steel (STS) corrugated tube has much higher heat transfer coefficient (U value) than HDPE tube in SWHE. However, this material cannot be perfectly protected from corrosion when exposed to aggressive water environments. The goal of this work is to increase U value of SWHE when STS corrugated tube is perfectly protected from corrosion by covering polyolefin material on its corrugated surface. In order to verify the thermal performance of proposed tube, U values and friction factors of the proposed tube were compared with those of the HDPE tube. For the evaluation on possible applicability of proposed tube, the economic evaluation of the proposed tube was also performed based on the result from test bed experiments. The results show that the proposed tube leads to 4.65 times higher U value and 2 times higher friction factor than HDPE smooth tube. Despite with the increased friction loss and installation cost, it was revealed that the proposed tube can achieve COP due to enhanced heat transfer performance.

실내식물 유무에 따른 대학 강의실 IAQ 개선효과와 재실자 PAQ에 관한 연구

정근주(Jung Gun-Joo),오근숙(Oh Geun-Sug),서민호(Seo Min-Ho) 한국건축친환경설비학회 2011 한국건축친환경설비학회 학술발표대회 논문집 Vol.2011 No.10

The purpose of this study is investigating the improvement effects of Indoor Air Quality(IAQ) and Occupants' Perceived Air quality(PAQ) with the indoor plants in university classrooms. First of all, we conduct the measurement survey of IAQ to its original condition in this classrooms. In other words, there is no indoor plants. And then we find out that this classrooms are need of improvement in IAQ. It is especially important to reduce CO2 concentration that was continually increase by respiration of students. So we arranged indoor plants by the windows, and we measured the increasing level of CO2 according to existence of indoor plants. The result of this study is following. The increasing level of CO2 nonexistence IPs was fore times more higher compared to existence of IPs. And PAQ of students actually improve by IPs.