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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Solar Energy Society
Journal Basic Information
Journal DOI :
The Korean Solar Energy Society
Editor in Chief :
Volume & Issues
Volume 22, Issue 4 - Dec 2002
Volume 22, Issue 3 - Sep 2002
Volume 22, Issue 2 - Jun 2002
Volume 22, Issue 1 - Mar 2002
Selecting the target year
Active Solar Heating System Design and Analysis for the Zero Energy Solar House
Baek, N.C. ; Yoo, C.K. ; Yoon, E.S. ; Yoo, J.Y. ; Yoon, J.H. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 1~9
This study is on the design and evaluation of Zero Energy Solar House(ZeSH) including active solar heating system. Various innovative technologies such as super insulation, passive solar systems, super window, ventilation heat recovery system...etc were analyzed by individual and combination for the success of ZeSH. The ESP-r simulation program was used for this. Simulation results shows that almost 77% of heating load can be reduced with the following configuration of 200mm super insulation, super windows, passive solar system and 0.3 ventilation rate per hour. Active solar heating system (ASHS) was designed for the rest of the heating load including hot water heating load. The solar assisted heat pump is used for the auxiliary heating device in order to use air conditioner but not included in this study. The yearly solar fraction is 87% with a solar collector area of
. The parametric studies as the influence of storage volume and collector area on the solar fraction was analyzed.
A Study on the Development of Sunlight Analysis Program "SunChart"
Shin, U-Cheul ; Jang, Moon-Seok ; Baek, Nam-Choon ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 10~17
This study aims to develop the analysis tool that assesses the sunlight at any given point of a window or solar collector array shaded by surrounding obstacles. The development of this software, named SunChart, focused to the user-friendliness and the reliability. This SunChart can calculate the solar radiation as well as shading on the certain face. The calculation results by SunChart show by both numerically and graphically and are in a good agreement with ones obtained from "Sunrise Sunset" developed at Korea Astronomy Observatory and from TRNSYS.
A Comparative Study of Heat Pipes with Enlarged Condenser Section for Evacuated Solar Collectors
Boo, Joon-Hong ; Chung, Won-Bok ; Kwak, Hee-You ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 18~25
For application to medium temperature solar collerctors
, a heat pipe should be designed properly to efficiently transfer heat to a hotter condenser than common applications. Among many wick structure candidates for heat pipes of this type, a slab wick was selected based on promising performance data reported previously. The thermal performance of slab wick heat pipes, screen wick heat pipes and thermosyphons with enlarged condenser section were experimentally investigated for comparison purpose. The heat pipes were 8.0 mm O.D. (evaporator section) and 25.4 mm O.D. (condenser section) made of copper. The experimental data of the heat pipes were analysed in terms of thermal resistance against thermal load and coolant temperature.
Study on Comparative Analysis of Daylight Evaluation Tools for Building Environment
Park, K.E. ; Kim, J.T. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 26~34
Daylighting in building is very important as it has an effect on work performance as well as on their visual health. It is also regarded as a good energy conservation measure in saving energy used for lighting. There are many daylighting evaluation tools such as empirical equations, tables, nomograms, diagrams, protractors, computer simulation, scale models. This study conducted initial daylight measurements to analyze luminous environment in classrooms of elementary school and comparative analysis on three daylighting evaluation tools, such as daylight factor calculation formula, the graphic method with BRE Protractor and computer simulation with Adeline 3.0. It is found that the computer simulation tool produced the closest result to actual measurements of luminous environment in elementary school classroom, and the other simplified tools made appropriate results so that they can be used in the early stage of daylighting design process.
A Basic Study on Urban Radiation Heat Transfer
Kim, C.M. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 35~43
This research makes that quantitative radiation property of an actual town ward is obtained in quest of the parameter with regard to a radiation heat transfer property and set up several town ward models that reproduced a solid form of a city along the attribute of the city. A regular trend possibility that is able to evaluate a radiation characteristics of a town ward quantitatively from a town ward guideline and confirmation that is produced about each parameter as a result of a numerical value simulation it obtained. This research shot a coefficient of Gebhart's emission absorption. sky radiation absorption rate direct solar radiation absorption rate the parameter with regard to a radiation heat transfer characteristics of a town ward in each town ward model and a volume rate of a town ward advances case study under regular such condition and shot the absorption rate, direct and others days and calculated an absorption rate and checked about the relation between a town ward and each radiation heat transfer property of a city.
Characteristics of Photo-conversion Glass with
and Its Use 1 (Glass Production and Photo-conversion Characteristics)
Chung, Hun-S. ; Ahn, Yang-K. ; Kil, Dae-S. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 44~50
Photosynthesis of plants is effective in the range of 550 to 700 nm of the wavelength of solar irradiation. If the conversion of ultraviolet to the above mentioned region is possible, the photosynthesizing ability is expected to be enhanced.
doped soda-lime bulk and
sol-gel coated glasses were prepared and their spectroscopic properties were studied. The absorption and emission spectra for the specimens were measured with the changes of wavelength and Eu ion concentration in the range of the wavelength of 300 to 700nm. The transmittance intensity of visible light through the bulk glass and the coated one was unchanged with the addition of Eu element. The emission spectrum intensity of
was found to be the maximum at 618 nm which is a transition of
. Additionally, it was shown that the intensity was linearly increased up to 10% of the Eu concentration.
Analysis of Thermodynamic Design Data for Heating of Double - Effect Solar Absorption System using LiBr - water and Ethylene Glycol Mixture
Won, S.H. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 51~61
Analysis of thermodynamic design data of double effect solar absorption heat pump system for heating has been done to find the property of Libr-water + ethylene Glycol mixture for working fluid by computer simulation. Derived thermodynamic design data. enthalpy based coefficient of performance and flow ratio for possible combinations of operating temperature for water - LiBr and Ethylene Glycol mixture (H2O: CHO ratio 10:1 by mole) by computer simulation. The obtained results, COP and mass flow ratio of the water-lithium bromide-ethylene glycol system, are compared with data for the water-Libr pair solution.
Characteristics of Photo-conversion Glass with
and Its Use 2 (Effect of Photo-conversion on Vegetables Growth)
Chung, Hun-S. ; Ahn, Yang-K. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 62~67
Energy conversion soda-lime-silica glasses doped with Eu3+ were produced and they were used to build small scale modules of
simulating the roof of glass house with which the rearing state of a small number of young and grown vegetables was observed. The vegetables selected for the study were eggplant, kale, and pimento. The width and length of their leaves along with the photosynthesized ability and chlorophyl content were measured to observe the growing state of the vegetables in the given periods of time. It was found that the vegetables grown under the photo-conversion glass made panels had higher values of the leaf width and length by 5 to 30% than them under the commercially available ordinary glass panels depending on the kind of vegetables. The photosynthesized abilities were also shown much higher for the vegetables under the conversion glass panels than for the non-conversion ones.
Analysis of the Thermal Environment and Natural Ventilation for the Energy Performance Evaluation of the Double Skin System during the Summer
Eom, Jung-Won ; Cho, Soo ; Huh, Jung-Ho ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 68~76
This paper discusses thermal and ventilation performance which might be caused by the adoption of one of specific building facade techniques, Double Skin System(DSS). One building with a prototypical DSS was selected and systematically investigated through field monitoring and computer simulation techniques. A network model of ventilation was successfully made using COMIS to evaluate ventilation performance of the system which can hardly be done by field measurements. Various operating conditions of air conditioning on/off and window opening were implemented in this type of building. Through the appropriate operation of the DSS in summer, simulation-based and experimental results implicate that it can lead to cooling energy savings.
Forced Convection Heat Transfer from an Inner Surface of a Two-Dimensional Rectangular Cavity
Seo, T.B. ; Han, K.Y. ; Kange, Y.H. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 77~84
In order to investigate forced convection heat transfer due to the wind from the inner surface of a cavity receiver for a parabolic dish type solar energy collecting system, a two-dimensional rectangular cavity receiver is prepared and installed in a wind tunnel. The convection heat transfer coefficient of the inner surface of the receiver is dependent on the direction and the velocity of the wind. The attack angle of the cavity and the air velocity in the tunnel are controlled in a wide range so that the effects of the attack angle and the wind velocity on the heat transfer coefficient can be studied. The skirt is installed at the aperture of the cavity in order to reduce convective heat loss. The effects of the length and the installation angle of the skirt on convection heat transfer of the cavity are tested. It is found that convection heat loss can be significantly reduced by installing the skirt. Also, it is known that heat transfer from the cavity can be minimized if the angle of the skirt is
to the outer surface of the cavity.
A Case study on the Improvement of Air Conditioning System for Thermal Comfort and Energy Conservation in a Middle-Sized Auditorium
Na, S.Y. ; Rhee, E.K. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 85~96
Recently the number of auditoriums such as theaters, assembly halls, and concert halls is increasing in Korea. Auditoriums have generally large space volume, have a high density of occupancy per unit floor area, compared to other buildings. Since they have relatively high ceilings, some heat may stratify above the occupied zone. The under floor air conditioning system, which is set under seats, is frequently selected in an auditorium, because typical air conditioning system where air is supplied from ceilings often causes drafts and unequal temperature distribution. Therefore, this study aims to suggest basic data for air conditioning system design of a middle-sized auditorium. Features and problems of air conditioning system of an auditorium which has about 500 seats are investigated as a case study. In addition, indoor thermal comfort and cooling energy consumption are analyzed with a CFD program and an energy analysis program.
Life Cycle Cost Analysis of Primary Cooling System by Systematic Support Cost
Kim, C.M. ; Jung, S.S. ; Choi, C.H. ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 97~106
The purpose of this study is to analyze the life cycle cost of primary cooling system by systematic support cost. Life Cycle Cost(LCC) is the process of making an economic assessment of an item, area, system, or facility by considering all significant costs of ownership over an economic life, expressed in terms of equivalent costs. The essence of life cycle costing is the analysis of equivalent costs of various alternative proposals. In order to select economical primary cooling system in early heat source plan stages, the research investigates cost items and cost characteristics during project process phases such as planning/design, construction, maintenance /management, and demolition/sell phases. The study also analyze the life cycle cost by capacity leading to suggest the most economical primary cooling system by systematic support cost.
Recent Progress in Solar Energy Research - A review of Papers Published in the Korean Journal of Solar Energy between 2000 and 2002 -
Yoo, Ho-Chun ; Jang, Moon-Seok ;
Journal of the Korean Solar Energy Society, volume 22, issue 4, 2002, Pages 107~119
A review on the papers published in the Korean Journal of Solar Energy between 2000 and 2002 has been done. Focus has been put on current status of research in the aspect of Insolation. Solar Collector and Storage System, Solar Heating and Cooling System, Solar Cell and Lighting System, Active and Passive Solar Building, Heat Transfer in Solar Energy and Natural Energy. The conclusions are as follows. 1) Many studies on Insolation were conducted to optimize the usage of Solar Energy. 2) A review of the recent studies on solar thermal shows that there were many papers on solar collector and storage system. However, studies on the HVAC system using solar energy were relatively insufficient. 3) To produce high efficient solar cell. various experimental and numerical papers were published. However studies on control system, solar cell and lighting were seemed to be insufficient. 4) Studies on using solar energy in passive solar buildings were widely carried out, however, studies based on synthetic analysis of buildings and BIPV were insufficient. 5) Studies on heat transfer were mainly about heat exchanger, performance of heat pipe and multi air conditioner. 6) Studies on energy resources except for solar energy, such as hydraulic power and wind power etc. were very few.