流体机械
流體機械
류체궤계
FLUID MACHINERY
2013年
9期
7-9,24
,共4页
张宗楠%陶乐仁%程建%王建
張宗楠%陶樂仁%程建%王建
장종남%도악인%정건%왕건
R410A%冷凝%内螺纹管%换热系数%压降
R410A%冷凝%內螺紋管%換熱繫數%壓降
R410A%냉응%내라문관%환열계수%압강
R410A%condensation%internally ribbed tube%heat transfer coefficient%pressure drop
为了研究水平强化单管的管内冷凝性能，搭建了实验台。研究了在冷却水量不变的情况下，R410A在不同冷凝温度（35℃和40℃）和不同管径（5mm和9．52mm）下的换热情况。结果表明：总换热系数和压降随工质质量流量的增大而增大，质量流量对管内换热系数影响不是很大。冷凝温度40℃，5mm铜管的换热系数最高；冷凝温度40℃，9．52mm铜管的压降最小。
為瞭研究水平彊化單管的管內冷凝性能，搭建瞭實驗檯。研究瞭在冷卻水量不變的情況下，R410A在不同冷凝溫度（35℃和40℃）和不同管徑（5mm和9．52mm）下的換熱情況。結果錶明：總換熱繫數和壓降隨工質質量流量的增大而增大，質量流量對管內換熱繫數影響不是很大。冷凝溫度40℃，5mm銅管的換熱繫數最高；冷凝溫度40℃，9．52mm銅管的壓降最小。
위료연구수평강화단관적관내냉응성능，탑건료실험태。연구료재냉각수량불변적정황하，R410A재불동냉응온도（35℃화40℃）화불동관경（5mm화9．52mm）하적환열정황。결과표명：총환열계수화압강수공질질량류량적증대이증대，질량류량대관내환열계수영향불시흔대。냉응온도40℃，5mm동관적환열계수최고；냉응온도40℃，9．52mm동관적압강최소。
Establishes laboratory bench to research the condensation heat transfer performance of horizontal internally ribbed tube.The heat transfer performance of R410A in different tube diameter (5mm and 9.52mm)and different condensing tempera-ture (35℃and 40℃)with the same cooling flow rate was studied .According to the experimental data,the overall heat transfer coefficient and the pressure drop increase with the rise of refrigerant mass flow rate.The mass flow rate has a little effect on the heat transfer coefficient in the tube.The 5mm tube has the maximum heat transfer coefficient and 9.52mm tube has the minimum pressure drop under 40℃ condensing temperature.
