Study on the Conventional Method of Calculation for the Heat Transfer on 2-Dimensional Straight Fin with Condensation of Moist Air : Part 1-Proposal of the 2-Dimensional Fin Efficiency Model with Condensation of Moist Air
-
- Moroga Katsumi
- R & D Center, CORONA Corporation
-
- Yagi Motoyuki
- Graduate School of Science and Technology, Niigata University
-
- Kanai Yasushi
- Department of Information and Electronics Engineering, Niigata Institute of Technology
-
- Kobayashi Mutsuo
- Department of Mechanical Engineering,, Niigata University
Bibliographic Information
- Other Title
-
- 二次元直線フィンにおける結露を含む伝熱簡易計算法 : 第1報-結露を伴う二次元フィン効率モデルの提案
- 2ジゲン チョクセン フィン ニ オケル ケツロ オ フクム デンネツ カンイ ケイサンホウ ダイ1ポウ ケツロ オ トモナウ 2ジゲン フィン コウリツ モデル ノ テイアン
Search this article
Abstract
In order to improve COP of the air conditioner, the numerical simulation is widely used on the design of the heat exchanger, which assumes 1-dimensional flow of the refrigerant and optimizes the flow pattern of refrigerant considering the heat transfer between air and refrigerant and the total pressure drop of the refrigerant flow. The evaluation of the heat transfer on the fin surface of the heat exchanger is based upon the 1-dimensional fin efficiency model. On this study, we have adopted the 2-dimensional straight fin as a subject, and have constructed the 2-dimensional fin efficiency model by using the numerical experiment data which derived from numerically solving the heat conducting equation of the fin directly. Furthermore, regarding the heat transfer with condensation of moist air, we have proposed the conventional latent heat model which identifies the latent heat added upon the fin surface with an increase of the heat transfer coefficient, and have incorporated the model with the traditional method of calculation, which the bypass-factor of latent heat is equal to that of sensible heat, and have inspected the validity of the model. As a consequence, it was proved that this model gives good approximations in the case that the sensible heat load is low and the number of transfer unit is low. It was also found that the existence of dry area and the 2-dimensional distribution of temperature and saturate absolute humidity on the fin surface are great causes of significant errors of approximation of the mean temperature and mean saturate absolute humidity on the fin surface.
Journal
-
- Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan
-
Transactions of the Society of Heating,Air-conditioning and Sanitary Engineers of Japan 30 (98), 19-28, 2005
The Society of Heating, Air-Conditioning & Sanitary Engineers of Japan
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001206546712576
-
- NII Article ID
- 110007996540
-
- NII Book ID
- AN00065706
-
- ISSN
- 24240486
- 0385275X
-
- NDL BIB ID
- 7353290
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- IRDB
- NDL
- CiNii Articles
-
- Abstract License Flag
- Disallowed
