Development of Bare-Tube Condenser Utillizing a Low Pressure-Loss Fluidized Bed and Its Performance Test in a Practical Heatg-Pump System

低压损流化床裸管冷凝器的研制及其在实际热泵系统中的性能试验

• 批准号: 61850035
• 负责人: AIHARA Toshio
• 金额: $ 4.22万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850035/
• 关键词: 流動層; 熱交換器; ヒートポンプ; 凝縮器; 圧力損失; スリット分散板; 裸管群; 無フィン

For the purpose of development of condenser for heat-pump systems, experiments were carried out on heat-transfer and pressure loss characteristics of low pressure loss fluidized bed heat exchanger with an extremely small static bed height of glass beads. This heatg exchangerf was composed of of a bare tube.bank in staggered arrangement and a multi-slit distributor designed sepcially to reduce tghe pressure loss. The effect of the cross-sectional shape of the distributor, the particle size of the glass beads, the static bed height, and the number of rows on heat transfer performance were examined. The heat transfer and pressure loss character- istics are compared with existing experimental data, considering the fan power and the compact- ness of the heat exchanger. On the basis of the above-mentioned data, a practical fluidized- bed condenser was designed and developed; then, the performance of the condenser was measured. Through this project, the practical usefulness of the present fluidized bed heat exchanger has been clarified

为开发热泵冷凝器，对具有极小静床层高度的玻璃珠低压力损失流化床换热器的传热和压力损失特性进行了实验研究。该换热器由交错排列的裸管和专门设计的多缝分布器组成，以减少压力损失。tube.bank考察了分布器截面形状、玻璃珠粒径、静态床层高度和排数对传热性能的影响。考虑到风扇功率和换热器的紧凑性，将传热和压力损失特性与现有的实验数据进行了比较。在此基础上，设计开发了一台实用的流化床冷凝器，并对其性能进行了测试。通过本课题的研究，阐明了现有流化床换热器的实用性

项目成果

S.maruyama; T.Aihara Y.Tanaka; K.Kasahara: Experimental Thermal and Fluid Science. 1. (1988)

S.maruyama;

Shigenao MARUYAMA, Toshio AIHARA, Yoshiteru TAnaAKA, and Keisuke KASAHARA: "Heat Transfer and Pressure Loss of a Very Shallow Fluidized-Bed Heat Exchanger (Part 2, Experiment with Multi-Row Tube Banks)" Experimental,Thermal and Fluid Science. 1. (1988)

Shigenao MARUYAMA、Toshio AIHARA、Yoshiteru TanaAKA 和 Keisuke KASAHARA：“极浅流化床热交换器的传热和压力损失（第 2 部分，多排管组实验）”实验、热学和流体科学。

円山重直,相原利雄,田中義昭,笠原敬介: 日本機械学会論文集(B編). 54. (1988)

Shigenao Maruyama、Toshio Aihara、Yoshiaki Tanaka、Keisuke Kasahara：日本机械工程师学会会议记录（B 版）。（1988 年）。

円山重直,相原利雄,田中義昭,笠原敬介: 第24回日本伝熱シンポジウム講演論文集. (1987)

Shigenao Maruyama、Toshio Aihara、Yoshiaki Tanaka、Keisuke Kasahara：第 24 届日本传热研讨会论文集（1987 年）。

Shigenao MARUYAMA, Toshio AIHARA, Yoshiteru TANAKA, and Keisuke KASAHARA: "Heat Transfer and Low Pressure-Loss %characteristics of a Fluidized-Bed Heat Exchanger with a very Shallow Bed-Height and a Multiple-Row Tube Bank" Transactions of Japan Society of

Shigenao%20MARUYAMA、%20Toshio%20AIHARA、%20Yoshiteru%20TANAKA、%20and%20Keisuke%20KASAHARA:%20"Heat%20Transfer%20and%20Low%20Pressure-Loss%20%特性%20of%20a%20Fluidized-Bed%20Heat%