Junghun Lee | Researchain

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Building Services Engineering Research and Technology | 2016

Appropriate conditions for determining the temperature difference ratio via infrared camera

Jeong-Gook Kim; Junghun Lee; Jonghun Kim; Cheol-Yong Jang; Hakgeun Jeong; Doosam Song

The temperature difference ratio is used to measure the thermal performance of a building envelope. Calculation of temperature difference ratio requires temperature differences between indoor and outdoor environments and wall surface temperatures, obtained here using an infrared camera. This approach performs well when the temperature differential between indoor and outdoor environments is greater than 10℃ and when wind speed is less than 3.0u2009m/s. We identify periods suitable for accurate evaluation of thermal insulation performance with an infrared camera, based on eight cities in Korea. The number of measureable hours ranges between 3183 and 1317 annually. Optimum periods for measurement are between November and March, specifically between 01:00 and 09:00u2009h. Measurements obtained during these periods can therefore be regarded as relatively accurate. Practical application: A thermal imaging camera provides an easy method for checking the insulation performance and construction conditions of a building. Conventionally, this would be checked experimentally, but thermal imaging allows easy visualization of conditions.

Renewable & Sustainable Energy Reviews | 2017

Impact of external insulation and internal thermal density upon energy consumption of buildings in a temperate climate with four distinct seasons

Junghun Lee; Jeong-Gook Kim; Doosam Song; Jonghun Kim; Cheol-Yong Jang

Energy | 2018

Improvements to the customer baseline load (CBL) using standard energy consumption considering energy efficiency and demand response

Junghun Lee; Seunghwan Yoo; Jonghun Kim; Doosam Song; Hakgeun Jeong

Applied Energy | 2018

Thermal performance evaluation of low-income buildings based on indoor temperature performance

Junghun Lee; Seo-Hoon Kim; Jonghun Kim; Doosam Song; Hakgeun Jeong

Energy and Buildings | 2017

A middleware platform for the validation and utilization of short-term weather forecast data for office buildings

Junghun Lee; Sungjin Lee; Jonghun Kim; Doosam Song; Hakgeun Jeong

KIEAE Journal | 2016

Heating Energy Saving and Cost Benefit Analysis According to Low-Income Energy Efficiency Treatment Program - Case Study for Low-Income Detached Houses Energy Efficiency Treatment Program

Jeong-Gook Kim; Junghun Lee; Cheol-Yong Jang; Doosam Song; Seunghwan Yoo; Jonghun Kim

Energies | 2018

The Feasibility of Improving the Accuracy of In Situ Measurements in the Air-Surface Temperature Ratio Method

Seo-Hoon Kim; Junghun Lee; Jonghun Kim; Seunghwan Yoo; Hakgeun Jeong

Energies | 2015

Indoor Thermal Environment of Temporary Mobile Energy Shelter Houses (MeSHs) in South Korea

Jeong-Gook Kim; Junghun Lee; Byung-Lip Ahn; Hwayeon Shin; Seunghwan Yoo; Cheol-Yong Jang; Doosam Song; Jonghun Kim

Clinical Therapeutics | 2013

PP124—Pharmacokinetics of tolperisone in relation to CYP2C19 genotypes

J.Y. Byeon; Jung-Il Lee; Jueun Jeon; Junghun Lee; Seol-Hee Kim; Choon-Gon Jang; Sun-Mee Lee

Clinical Therapeutics | 2013

PP136—Genetic polymorphism of CYP2D6 significantly affects the pharmacokinetics of tolperisone

J.Y. Byeon; Jung-Il Lee; Jueun Jeon; Junghun Lee; Seol-Hee Kim; Chang-Ik Choi; Yun Jeong Lee; Jung-Woo Bae; Choon-Gon Jang; Sun-Mee Lee

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