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장명훈 ( Myung Hun Jang ),조현수 ( Hyun Soo Jo ),권대현 ( Dae Hyun Kweon ),차병열 ( Byung Yul Cha ),황자혜 ( Ja Hye Hwang ),한경남 ( Kyung Nam Han ),임양재 ( Yang Jae Im ) 한국어류학회 2014 韓國魚類學會誌 Vol.26 No.4
황해에서 주로 어획되는 참홍어의 분포 특성을 파악하기 위하여 2002년부터 2013년까지 황해 동부 해역에 30개 정점을 선정하여 오터트롤을 이용하여 참홍어를 채집 분석하였다. 조사기간 동안 892번의 트롤 예망 중에서 112회에 442개체의 참홍어가 채집되었다. 참홍어는 봄과 가을에 전체 조사해역에 넓게 분포하였으나, 여름에 북부 외해 일부해역과 겨울의 남부 외해에서 주로 분포하였다. 당년생의 참홍어는 봄과 가을에 조사해역의 연안역보다 외해에서 많이 출현하였다. 참홍어는 조사해역의 수온 3.8~14.5C, 염분 31.2~34.2 범위에서 분포하였으며, 수온은 참홍어의 분포에 영향을 미치고 적정 서식 수온은 5~14C이며 조사해역에서 수심과 염분은 참홍어 분포에 영향을 주지 않았다. 참홍어의 연도별 생산량은 어획생산변동 통계와 수협의 판매 자료를 이용하여 다시 산정하였다. Mottled skates, Beringraja pulchra, mainly found in the Yellow Sea were caught by otter trawl at 30 stations from 2002 to 2013 to identify the distribution patterns and ecology of the fish in the eastern Yellow Sea. A total of 442 individuals of mottled skate were caught at the 112 hauls of the total 892 hauls. The fish was widely distributed in the entire survey area in spring and autumn, and mainly caught in the northern offshore in summer and in the southern part in winter. The underyearlings of the mottled skate were mainly caught in the offshore in spring and autumn. The mottled skates were found at the temperature ranges of 3.8~~14.5C, and the salinity of 31.2~~34.2. The catch data of the fish suggested that water temperature be a critical factor for the distribution with the optimal ranges of 5~~14C. Salinity and water depth were not critical as much as the water temperature for the distribution of the mottled skates in the Yellow Sea. Also, the annual fluctuations of the fish catch were reviewed using the catch data from korea fisheries cooperative and national statistics from 1991 to 2009.
지열원 히트펌프 시스템에 적용되고 있는 난방용 적산열량계의 신뢰성 평가에 관한 연구
강희정(Hee Jeong Kang),이현수(Hyun Su Lee),장명훈(Myung Hun Jang) 한국지열·수열에너지학회 2018 한국지열에너지학회논문집 Vol.14 No.1
A ground source heat pump system should be equipped with devices to measure the generated heating or cooling heat amount in Korea. Generally, the heat measuring devices have been developed to estimate consumed heat amount in residential or commercial buildings from a central air-conditioning system or a district heating system. In this study, two representive heat measuring devices used for buildings were selected, and the accuracy of them were experimentally estimated at the ground source heat pump operating conditions. The obtained heat amounts from the heat measuring devices were deviated within 4.3% comparing with the precise values calculated from an accredited test facility. Even though the accumulated heat amount values of the heat measuring devices had a small difference comparing with the precise values, the temperatures of heat measuring devices showed greatly different values comparing with the precise temperature. Therefore, it is highly recommended to develop the heat measuring devices which is appropriate for the ground source heat pump systems.