|
|
|
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ / v.11, no.3, 2002³â, pp.101-107
|
¿È¸¼öÀåÄ¡ÀÇ ¿±³È¯ ÆÄÀÌÇÁ¹èÄ¡ Çü½Äº° ¿±³È¯ ¼º´É
( Heat Exchanging Performance as Affected by Arrangement of Heat Exchanging Pipe ) |
| À±¿ëö;°Á¾±¹;¼¿ø¸í; °æ»ó´ëÇб³ ³ó¾÷½Ã½ºÅÛ °øÇкÎ(³ó¾÷»ý¸í°úÇבּ¸¿ø);°æ»ó´ëÇб³ ³ó¾÷½Ã½ºÅÛ °øÇкÎ(³ó¾÷»ý¸í°úÇבּ¸¿ø);°æ»ó´ëÇб³ ³ó¾÷½Ã½ºÅÛ °øÇкÎ(³ó¾÷»ý¸í°úÇבּ¸¿ø);
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| º» ¿¬±¸¿¡¼´Â ¿Â½ÇÀÇ ¿Âdz½Ä ³¹æ½Ã½ºÅÛ ¿¬Åë¿¡ ÀåÂøÇÒ ¼ö ÀÖ´Â Æó¿ ȸ¼ö±âÀÇ ¼º´ÉÀ» °³¼±Çϱâ À§ÇÏ¿© °¢°¢ »óÀÌÇÏ°Ô ¼³°èµÈ 3°³ÀÇ ¿±³È¯ ÀåÄ¡¿¡ ´ëÇØ ¿È¸¼ö ¼º´ÉÀ» ½ÇÇèÀûÀ¸·Î ºñ±³ ºÐ¼®ÇÏ¿´´Ù. AÇü ¿È¸¼ö½Ã½ºÅÛÀÇ °æ¿ì, Ãʱâ ÅõÀÚºñ¿ë°ú ÇöÀçÀÇ ³ó¿ë Àü·Â¿ä±Ý ÇÏ¿¡¼ ´ëü·Î 1³âÀ» ÀüÈÄÇÏ¿© ÅõÀÚ¿¡ ´ëÇÑ º¸»óÀÌ ÃæºÐÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. BÇü ¹× CÇü ¿È¸¼ö½Ã½ºÅÛÀÇ °æ¿ì, ¿ ȸ¼ö¿ë °ø±â È帧¹æÇâÀÌ 180$^{circ}$±¼Àý·Î ÀúÇ×ÀÌ Å©°Ô ¹ß»ýµÇ¾î ¼ÛdzÆÒÀÇ Àü¾Ð Áõ°¡¿¡ µû¸¥ À¯¼Ó Áõ°¡°¡ ¹Ì¹ÌÇÏ¸ç µ¿ÀÏÇÑ ¿ ±³È¯¸éÀû¿¡¼´Â ¼ÛdzÆÒÀÇ °ø±âÀúÇ× Áõ´ë·Î ¿ ȸ¼ö ¼º´ÉÀÌ ÇöÀúÈ÷ °³¼±µÇÁö´Â ¸øÇßÁö¸¸, Á÷¼±Çüº¸´Ù BÇüÀÇ °æ¿ì ¾à 5%. CÇüÀÇ °æ¿ì ¾à 13%Á¤µµ ³ôÀº ¿ ȸ¼öÈ¿À²À» º¸¿´´Ù. ¼ÛdzÆÒÀÇ ¿ë·®Àº AÇü¿¡ »ç¿ëµÈ ¿ë·®ÀÎ 25m$^3$/minÀüÈİ¡ ÀûÀýÇÒ °ÍÀ¸·Î ÆÇ´ÜµÇ¸ç, ÀûÁ¤ ¼ÛdzÆÒ ¿ë·® ÇÏ¿¡¼ ¿È¸¼ö¼º´ÉÀº Çì¾îÇÉÇüÀÌ Á÷¼±Çüº¸´Ù È¿°úÀûÀÎ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ´Ù¸¸, Çì¾îÇÉÇüÀº ¹°·Ð Á÷¼±Çü¿¡¼µµ ¿±³È¯ ÆÄÀÌÇÁÀÇ ¹èÄ¡¹Ðµµ, ÆÄÀÌÇÁ ±æÀÌ ¹× µÎ²² µîÀÇ º¯È¿¡ µû¸¥ ÃÖÀûÈ ¿¬±¸°¡ ¼ö¹ÝµÇ¾î¾ß ÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
|
| This study was carried out to improve the performance of heat recovery device attached to exhaust gas flue connected to combustion chamber of greenhouse heating system. Three different units were prepared far the comparison of heat recovery performance; A-type is exactly the same with the typical one fabricated for previous study of analyzing heat recovery performance in greenhouse heating system, other two types (B-type and C-type) modified from the control unit are different in the aspects of airflow direction (U-turn airflow) and pipe arrangement. The results are summarized as follows ; 1. In the case of Type-A, when considering the initial cost and current electricity fee required for system operation, it was expected that one or two years at most would be enough to return the whole cost invested. 2. Type-B and Type-C, basically different with Type-A in the aspect of airflow pattern, are not sensitive to the change of blower capacity with higher than 25m$^3$.min$^{-1}$ . Therefore, heat recovery performance was not improved so significantly with the increment of blower capacity. This was assumed to be that air flow resistance in high air capacity reduced the heat exchange rate as well. Never the less, compared with control unit, resultant heat recovery rate of Type-B and Type-C was improved by about 5£¥ and 13£¥, respectively 3. Desirable blower capacity of these heat recovery units experimented were expected to be about 25m$^3$.min$^{-1}$ , and at the proper blower capacity, U-turn airflow units showed better heat recovery performance than control unit. But, without regard to the type of heat recovery unit, it was recommended that comprehensive consideration of system's physical factors such as pipe arrangement density, unit pipe length and pipe thickness, etc., was required for the optimization of heat recovery system in the aspects of not only energy conservation but economic system design. |
| |
| Ű¿öµå |
| ¿È¸¼ö±â;¿±³È¯±â;¿Â½Ç;¿¡³ÊÁö º¸Á¸;heat recovering device;heat exchanger;greenhouse;energy conservation; |
| |
|
|
 |
|
»ý¹°È¯°æÁ¶ÀýÇÐȸÁö / v.11, no.3, 2002³â, pp.101-107
Çѱ¹»ý¹°È¯°æÁ¶ÀýÇÐȸ
ISSN : 1229-4675
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211922407171)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|