CAJ | 학술논문

提出一套基于土壤能的地下埋管新风系统，结合赣州地区土壤温度分布特点，建立了土壤-空气换热器冷却终温计算模型，并计算换热器传热系数K值，从理论上分析夏季地下埋管新风系统冷却能力随埋管长度、埋管半径及埋管内空气流速变化的规律，并通过工程应用举例说明该冷却新风系统技术经济可行，在赣州地区具有一定的推广意义.理论分析结果表明：该新风系统的冷却能力随着埋管长度增大而增大，随着埋管半径、埋管内空气流速的增大而减小，且地下埋管半径不宜超过0.4 m，否则不利于空气充分吸收土壤能，单根埋管长度应小于180 m，管长达到180 m时通过增加管长来增加系统冷却效率是不合理的.
제출일투기우토양능적지하매관신풍계통，결합공주지구토양온도분포특점，건립료토양-공기환열기냉각종온계산모형，병계산환열기전열계수K치，종이론상분석하계지하매관신풍계통냉각능력수매관장도、매관반경급매관내공기류속변화적규률，병통과공정응용거례설명해냉각신풍계통기술경제가행，재공주지구구유일정적추엄의의.이론분석결과표명：해신풍계통적냉각능력수착매관장도증대이증대，수착매관반경、매관내공기류속적증대이감소，차지하매관반경불의초과0.4 m，부칙불리우공기충분흡수토양능，단근매관장도응소우180 m，관장체도180 m시통과증가관장래증가계통냉각효솔시불합리적.
The paper puts forward a set of fresh air system for buried pipes based on the soil energy. Combining with the characteristics of soil temperature distribution in Ganzhou, it builds cooling end temperature calculation model of earth-to-air heat exchanger, and calculates the heat transfer coefficient K value. The changing regularity of their cooling capacity in fresh air system are theoretically analyzed in terms of their length, radius and tube air velocity. The engineering applications show that such system is feasible technically and economically and has a promoting significance in Ganzhou. The theoretical results showed that the cooling capacity of the fresh air system increases with buried pipes' length, decreases with the increasing of their radius and tube air velocity, and their radius should not be more than 0.4 m, instead it would be bad for the air to absorb the soil energy. The length of buried single ones should be less than 180 m, and it is not reasonable by increasing their length to improve the cooling efficiency of the system when the pipe length reached 180 m.