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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 26, Issue 4 - Dec 2006
Volume 26, Issue 3 - Sep 2006
Volume 26, Issue 2 - Jun 2006
Volume 26, Issue 1 - Mar 2006
Selecting the target year
Study on long-term Performance characteristics of various solar thermal system for heating protected horticulture system
Lee, Sang-Nam ; Kang, Yong-Heack ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 1~8
The objective of this research is to study on the analysis of long-term performance characteristics of various solar thermal system for heating protected horticulture system for reducing heating cost, increasing the value of product by environment control, and developing advanced culture technology by deploying solar thermal system. Long term field test for the demonstration was carried out in horticulture complex in Jeju Island. Reliability and economic aspect of the system which was operated complementary with thermal storage and solar hot water generation were analyzed by investigating collector efficiency, operation performance, and control features. Optimum operating condition and its characteristics were closely investigated by changing the control condition based on the temperature difference which is the most important operating parameter. However, it is expected that, in high-insolation areas where large-scale ground storage is adaptable, solar system demonstrated in the research could be economically competitive and promisingly disseminate over various application areas.
Research on surface coating of a solar collector using thermal spray foaming methodology for low cost
Kim, Bu-Ahn ; Choi, Kwang-Hwan ; Roh, Sang-Hoon ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 9~16
A solar collector surface coated with a low emission material is still imported from other developed countries expensively. Thus it is very significant to develop a new coating method with a cheap alternative coating material instead of the imported high-cost collector surface. A thermal spray method was adopted to coat a cheap Titania on a copper plate. Generally, a new coating on the copper plate was conducted successfully by selecting a proper ratio of carbon and acetylene. By measuring an absorption rate of solar and heat emission rate, all the plate types gained a high absorption rate of 98% approximately, more or less, but all of the types still have a high emission. Finally it was clear that more research is needed to advance the coated-plate to subdue the high emission from the hot plate surface and the higher the Titania's proportion is, the lower the emission is on the surface.
Research on Heat and Mass Transfer Coefficient in the Packing Layer With a Solar Desiccant Heating/Cooling System
Yohana, Eflita ; Choi, Kwang-Hwan ; Kim, Bu-Ahn ; Kim, Dong-Gyu ; Paek, Ki-Dong ; Kim, Ji-Won ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 17~24
A simulation analysis of PV application method effect on electric power performance in an apartment wall facade
Seo, Jung-Hun ; Huh, Jung-Ho ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 25~32
The objective of this study is to investigate the effect of building integrated PV application method on power generation. PV modules were integrated to a hypothetical apartment building facade in Seoul, Korea. Three different design options of PV panel mounted on exterior wall were developed for the analysis of cooling effects through ventilation. Numerical simulations using TRNSYS coupled with COMIS were executed to evaluate the design options. Their facade configurations are such as vertically installed PV panels with or without air gap between PV rear surface and exterior wall surface, and the tilted PV panels attached to the exterior wall at an angle of to the horizontal. Parametric results show that there is little difference regardless of the air 9ap width between PV rear surface and exterior wall surface. Special strategies which could effectively cool a PV panel to increase the electric power are required if we prefer to a vertical facade configuration in a building integrated PV installation. Consequently, it is expected that there is no reason for architect to install vertically PV panels with air gap unless active strategies are considered.
Control Efficiency of a Daylight Dimming System for Indirect Lighting in a Small Office
Kim, Soo-Young ; Jung, Yong-Ho ; Sohn, Jang-Yeul ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 33~43
Daylight dimming control system was analyzed for an indirect lighting system in a small office space with a double skin envelope system. Computer simulations were performed for photosensors with three shielding conditions. The photosensors were placed on the center of ceiling, and backwall. Three sky conditions defined by CIE were considered. Overall, control performance was not very excellent for all conditions. Fully-shielded photosensor achieved good control performance for some cases, but partially-shielded and unshielded photosensors failed to achieve target illuminance. The variation in desktop illuminance due to daylight was examined for a variety of daylight conditions. Linear correlation between desktop illuminance and photosensor illuminance was analyzed using ANOVA.
An Evaluation of Daylight Performance in the Reading Room of a Library according to Different Azimuths and Louver Systems
Park, Joo-Hyun ; Kim, Kang-Soo ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 45~51
Recently, various kinds of daylight system are recognized as an important and useful strategy in energy-efficient building designs. However, a large amount of direct sunlight can make many problems. Therefore, it is necessary to control daylighting through louver systems for high quality visual environment. The purpose of this study is to analyze daylighting performance in the reading room of a library according to different azimuths and louver systems. The results evaluated daylight performance based on the RADIANCE lighting software.
A Detailed Survey of Direct Normal Radiation and Clear-day for the Construction of Solar Concentrating System in Korea
Jo, Dok-Ki ; Kang, Young-Heack ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 53~62
Since the direct normal radiation and clear day are a main factor for designing any solar thermal and photovoltaic concentrating system, it is necessary to evaluate its characteristics all over the country. The work presented here are the investigation of direct normal radiation and clear day in Korea. The data utilized in the investigation consist of direct normal radiation collected for 14 years('90. 12
2004. 12) and clear-day collected for 23 years(
) at measuring stations across the country. The analysis shows that the annual-average daily direct normal radiation is 5.4 kWh/m2 and the annual-average total clear-day is 92.7 days in Korea. We also constructed the contour map of direct normal radiation and clear-day in Korea by interpolating actually measured data across the country.
The Experimental Study on the Application of the Insulated Glass PV Module in the Curtain Wall
Oh, Min-Seok ; Kim, Hway-Suh ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 63~69
In order to positively cope with the international environmental regulations like UNFCCC (UN Framework Convention on Climate Change) and to overcome energy crisis Korea, who depends on import for more than 97% of required energy, needs to continuously proceed to development, spread and expansion of alternativeenergy and then, to cultivate the capacity to keep the balance of demand and supply of energy by itself. In this aspect, the technology of BIPV (Building Integrated Photovoltaic) is the field that the world is most interested in. However, at present, this technology is centered on increasing the efficiency of the module itself so it has lots of problems to be applied to buildings. Application of the integrated PV system in building external curtain wall can obtain much more generation of electric power than in roof-types whose area for installation is restricted, so it is excellent in terms of its possibility of application. Therefore, this paper intends to advance its practical use by proposing how to get integrated PV system which can be applied to building external curtain wall, and how to apply it.
Irreversibility Analysis of an Air-to-Water Heat Pump System
Lee, Se-Kyoun ; Woo, Joung-Son ; Ro, Jeong-Geun ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 71~78
Thermodynamic irreversibility analysis of an air-to-water heat pump system is analyzed in this study. This analysis shows the distribution of irreversibilities(true losses in thermodynamic sense) through the system components and informs us of a potential improvements with the irreversibility factor decreases. The results show that the largest irreversibilities occur in the motor-compressor unit. The remaining irreversibilities are distributed relatively uniformly through the other parts including utilization system. The increase of performance can be attained through either the improvement of adiabatic efficiency of motor-compressor unit(
) or the reduction of temperature difference(
). With the decrease of utilization temperature(
) COPH also increases but the exergetic efficiency decreases. The increase of COPH of about 0.05 can be accomplished with 1K decrease of
A Study on the Application Strategies of Renewable Energy Systems Considering Layout and Block Plan in Apartment Building
Lee, Kwan-Ho ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 79~87
This study aims to presents the applicability of apartment building for renewable energy systems using method of uncomplicated calculation and computer simulation. According to the weather conditions (NASA Surface meteorology and Solar Energy) analysis, it has been found that photovoltaic and wind power system can be applied to apartment buildings application. In case study considering layout and block plan, adaptation of solar water heating, photovoltaic and wind energy system to apartment buildings was proved to produce a profit. And the application strategies of renewable energy systems can be used not only for the investment decisions for economic analysis but also for the comparative analysis of uncomplicated calculation and computer simulation.
A study on the Estimation of Standard Heating City Gas Consumption of Apartment Housing
Shim, Yun-Hee ; Choi, Chang-Ho ; Lee, Hyun-Woo ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 89~97
Our Housing culture continuously changes for the correspondence to social development and changes of economy, and be developing. A massive apartment complex continuously increased, and According to this in our country heating energy consumption of a residential building is continuously increasing at country me whom was limited in order to raise efficient residential land use and diffusion ratio of house. If confirm an element to be able to reduce use of a heating energy, and there is saving possibility to parts of energy saving, this study will present the standard amount used with bases to the gas amount used for heating and Field Test data about room temperature. Execute simulation with building balance (public area, a plain), the gas amount useds such as incense of a building, indoor setting temperature (
), a position of an apartment house etc. to affect the energy amount used of a valuation object building of a variable through Field Test and research on the actual condition. Calculate the standard amount used of city gas for winter season heating of a comparative analysis apartment house to data value getting the above results through Field Test and simulations with bases.
Validating of small chamber method by CFD simulation and VOCs emission rate of construction materials.
Kim, Yun-Deok ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 99~110
This study focused on the emission rate of the construction materials. The method of study is as follows. First, validation of small chamber method to determine emission rate of construction material was performed by CFD simulation. For the result of this study, uniform air velocity in small chamber was founded, and small chamber as a test material for emission rate was validated. Second, the construction materials were categorized by their feature and the emission rate of volatile organic compound was determined. Totally, VOCs emission rate of 49 materials were determined.
Environmental Performance Evaluation for Song-do City Constructions by using Green Building Certification Criteria
Park, Tae-Bum ; Kim, Yong-Shik ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 111~117
Song-do City is a newly constructed city built on land reclaimed from the seaside and the surrounding area. Its development involved a long process since the basic plans for reclamation of the publicly owned seaside area in Song-do were drawn up in September 1979. However, if we take a look at the overall status of the project as it is carried on at present, it is hard to deny that the project is trapped inside the same legal restrictions as are all other existing cities, which permits Song-do City to meet only very minimum standards. This study intends to analyze and assess the Song-do City's environmentally friendly construction and to rate its current development status, exposing any problems and offering alternative solutions. In this paper, the current state of constructions in Song-do City were reviewed. Then a quantitative analysis and assessment for the Song-do City constructions of apartments, complex buildings, office buildings, and school facilities were conducted by using green building certification criteria. Finally the synthetic results of environmental performance evaluation for Song-do city constructions and follow-up suggestions were described.
The Demand Expectation of Heating & Cooling Energy in Buildings According to Climate Warming
Kim, Ji-Hye ; Suh, Seung-Jik ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 119~125
The impacts of climate changes on building energy demand were investigated by means of the degree-days method. Future trends for the 21st century was assessed based on climate change scenarios with 7 global climate models(GCMs). We constructed hourly weather data from monthly temperatures by Trnsys 16. A procedure to estimate heating degree-days (HDD) and cooling degree-days (CDD) from monthly temperature data was developed and applied to three scenarios for Inchon. In the period 1995-2080, HDD would fall by up to 70%. A significant increase in cooling energy demand was found to occur between 1995-2004(70% based on CDD). During 1995-2080, CDD would Increase by up to 120%. Our analysis shows widely varying shifts in future energy demand depending on season. Heating costs in winter will significantly decrease whereas more expensive electrical cooling energy will be needed.
A Study on the Evaluation of Daylight Performance in High-Rise Residental Complex
Kim, Kyung-Ah ; Kim, Chang-Sung ; Kim, Kang-Soo ;
Journal of the Korean Solar Energy Society, volume 26, issue 3, 2006, Pages 127~133
Recently, various building types such as Center-Core shape and Y-shape were studied as the demand for hight-rise residental complex increased. However, Center-Core type can make many Problems because the house unit can face to the north or west. Therefore, this study evaluated daylight conditions for four plan types in high-rise residental complex.