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| 1 | Applicability of cement-based grout for ground heat exchanger considering heating-cooling cycles显示文摘The applicability of cement grout (or cement-based grout) has been considered as an alternative to bentonite grout commonly used to backfill closed-loop vertical ground heat exchangers. In a geothermal heat pump system, repeated heating-cooling cycles may cause adverse effects on the integrity of cement grout in the ground heat exchanger. To account for the temperature cycling effect, the strength degradation of cement grout due to temperature cycling has been examined by measuring the unconfined compression strength of cured specimens in a humidity-temperature controlling chamber with applying temperature cycles between 5°C and 50°C. There is a tendency that the unconfined compression strength decreases with an increase in the number of temperature cycles. On the other hand, an equivalent hydraulic conductivity of a pipe-embedded cement grout specimen was evaluated by carrying out a modified flexible wall permeameter test equipped with a water circulating system to control temperature inside the pipe section. The applied operating temperature range was from 5 to 35°C. After three cycles of heating-cooling circulation, the equivalent hydraulic conductivity becomes asymptotic to a constant value, which implies there is no severe detachment of the pipe from the cement grout. | Moonseo PARK SunhongMIN Jeehee LIM Jong Min CHOI Hangseok CHOI | 2011 | Science China(Technological Sciences)2011，54，7： | 5 |
| 2 | Numerical simulation for thermal response test performance in closed-loop vertical ground heat exchanger显示文摘In this study, a series of numerical analyses was performed in order to evaluate the performance of full-scale closed-loop vertical ground heat exchangers constructed in Wonju, South Korea. The circulating HDPE pipe, borehole and surrounding ground formation were modeled using FLUENT, a finite-volume method (FVM) program, for analyzing the heat transfer process of the ground heat exchanger system. Two user-defined functions (UDFs) accounting for the difference in the temperature of the circulating inflow and outflow fluid and the variation of ground temperature with depth were adopted in the FLUENT modeling. The thermal conductivities of grouts (cement vs. bentonite) measured in laboratory were used as input values in the numerical analyses to compare the thermal efficiency of the cement and bentonite grouts used for installing the closed-loop vertical ground heat exchanger. A series of numerical analyses was carried out to simulate in-situ thermal response tests performed in the construction site. From the comparison between the in-situ thermal response test results and numerical simulations, the average thermal conductivity of the ground formation in the construction site is back-calculated as approximately 4 W/mK. This value can be used in evaluating the long-term performance of the closed-loop vertical ground heat ex changer. | CHOI Jong Min LEE Chulho PARK Moonseo KANG Shin-Hyung CHOI Hangseok | 2011 | Science China(Technological Sciences)2011，54，7： | 2 |
| 3 | Construction planning method using case-based reasoning(CONPLA-CBR) 显示文摘 | Han-Guk Ryu Hyun-Soo Lee Moonseo Parkyu | 2007 | Journal of Computing in Civil Engineering2007，21，6： | 1 |
| 4 | A sequence-based approximate MMSE decoder for source coding over noisy channels using discrete hidden Markov models显示文摘 | Miller D J Moonseo Park | 1998 | IEEE Transactions on Communications1998，46，2： | 1 |
| 5 | Transaction-cost-based selection of appropriate general contractor-subcontractor relationship type 显示文摘 | Hyun soo Lee Joon oh Seo Moonseo Park | 2009 | Journal of Construction Engineering and Management2009，135，11： | 1 |
| 6 | Dynamic modeling for construction innovation 显示文摘 | Moonseo Park Madhav Prasad Nepal and Mohammed Fadhil Dulaimi | 2004 | Journal of Management in Engineering2004，20，4： | 1 |
| 7 | Modeling the dynamics of urban development project: Focusing on self-sufficient city development显示文摘 | Moonseo Park Youngjoo Kim Hyun-soo Lee Sangwon Han Sungjoo Hwang Min Ji Choi | 2011 | Mathematical and Computer Modelling2011，，： | 1 |
| 8 | Modeling the dynamics of urban development project:Focusing on self-sufficient city development显示文摘 | Moonseo Park Youngjoo Kim Hyun-soo Lee Sangwon Hanb Sungjoo Hwang Min Ji Choi | | 0，，： | 1 |
| 9 | Modeling the dynamics of urban development project:Focusing on self-sufficient city development显示文摘 | Moonseo Park Youngjoo Kim Hyun-soo Lee Sangwon Han Sungjoo Hwang Min Ji Choi | | 0，，06： | 1 |
| 10 | Case Adaptation Method of Case-Based Reasoning for Construction Cost Estimation in Korea显示文摘 | SaeHyun Ji Moonseo Park HyunSoo Lee | 2012 | Journal of Construction Engineering and Management2012，138，1： | 1 |
| 11 | Construction knowledge evaluation using expert index显示文摘 | Park Moonseo Lee Hyun- Soo Kwon Soonseok | 2010 | Journal of Civil Engineering and Management2010，16，3： | 1 |
| 12 | A minimum mean-squared error relay for the two-way relay channel with network coding 显示文摘 | MOONSEO P SEONG L K | 2009 | Communications Letters2009，13，： | 1 |
| 13 | Dynamic analysis of the effects of mortgage-lending policies in a real estate market显示文摘 | Sungjoo Hwang Moonseo Park Hyun-Soo Lee | | 0，，06： | 1 |
| 14 | A Conceptual Model of Web Service - based Construction Information System 显示文摘 | SEUNGJUN Roh MOONSEO Park HYUNSOO Lee | 2006 | Intelligent Computing in Engineering and Architecture2006，4200，： | 1 |
| 15 | Web-enabled system dynamics model for error and change management on concurrent design,and construction projects 显示文摘 | SANGHYUN LEE FENIOSKY PE?A-MORA MOONSEO PARK | 2006 | Journal of Computing in Civil Engineering(AS- CE)2006，，78： | 1 |
| 16 | Model - based dynamic resource management for construction projects 显示文摘 | MOONSEO PARK | 2005 | Automation in Contruction2005，14，： | 1 |
| 17 | Transaction- cost-based selection of appropriate general contractor- subcontractor relationship type 显示文摘 | Hyun soo Lee Joon oh Seo Moonseo Park | 2009 | Journal of Construction Engineering and Management2009，135，11： | 1 |
| 18 | Performance evaluation of closed-loop vertical ground heat exchangers by conducting in-situ thermal response tests显示文摘 | Chulho Lee Moonseo Parka The-Bao' Nguyen etal | | 0，，： | 1 |
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