CIESC Journal ›› 2019, Vol. 70 ›› Issue (11): 4191-4198.DOI: 10.11949/0438-1157.20190412
• Fluid dynamics and transport phenomena • Previous Articles Next Articles
Yunmin RAN1,4(),Xianbiao BU1,2,3()
Received:
2019-04-18
Revised:
2019-08-29
Online:
2019-11-05
Published:
2019-11-05
Contact:
Xianbiao BU
通讯作者:
卜宪标
作者简介:
冉运敏(1996—),女,硕士研究生,基金资助:
CLC Number:
Yunmin RAN, Xianbiao BU. Influence analysis of insulation on performance of single well geothermal heating system[J]. CIESC Journal, 2019, 70(11): 4191-4198.
冉运敏, 卜宪标. 保温对地热单井换热性能的影响分析[J]. 化工学报, 2019, 70(11): 4191-4198.
参数及单位 | 数值 |
---|---|
井管直径/m | 0.1778 |
井管厚度/m | 0.00691 |
内管外径/m | 0.12 |
内管厚度/m | 0.01 |
注入速度/(m/s) | 1 |
井深/m | 3000 |
Table 1 Other calculation parameters
参数及单位 | 数值 |
---|---|
井管直径/m | 0.1778 |
井管厚度/m | 0.00691 |
内管外径/m | 0.12 |
内管厚度/m | 0.01 |
注入速度/(m/s) | 1 |
井深/m | 3000 |
材料 | 热导率/(W/(m?K)) |
---|---|
硬质聚氨酯材料 | 0.03 |
双层真空隔热管 | 0.06 |
PVC管 | 0.14 |
PPR管 | 0.20 |
LDPE管 | 0.33 |
HDPE管 | 0.50 |
Table 2 Thermal conductivity of different materials
材料 | 热导率/(W/(m?K)) |
---|---|
硬质聚氨酯材料 | 0.03 |
双层真空隔热管 | 0.06 |
PVC管 | 0.14 |
PPR管 | 0.20 |
LDPE管 | 0.33 |
HDPE管 | 0.50 |
方案 | 深度/m | ||
---|---|---|---|
0~1000 | 1000~2000 | 2000~3000 | |
方案一 | 0.06 | 0.06 | 0.06 |
方案二 | 0.06 | 0.06 | 0.2 |
方案三 | 0.06 | 0.2 | 0.2 |
方案四 | 0.2 | 0.2 | 0.2 |
Table 3 Layout schemes of different insulation pipes/(W/(m?K))
方案 | 深度/m | ||
---|---|---|---|
0~1000 | 1000~2000 | 2000~3000 | |
方案一 | 0.06 | 0.06 | 0.06 |
方案二 | 0.06 | 0.06 | 0.2 |
方案三 | 0.06 | 0.2 | 0.2 |
方案四 | 0.2 | 0.2 | 0.2 |
项目 | 井深/m | |||
---|---|---|---|---|
0~1000 | 1000~2000 | 2000~3000 | ||
方案一 | 温降/K | 0.617 | 0.452 | 0.173 |
热量损失/kW | 25.32 | 18.55 | 7.10 | |
方案二 | 温降/K | 0.740 | 0.543 | 0.684 |
热量损失/kW | 30.37 | 22.28 | 28.07 | |
方案三 | 温降/K | 0.733 | 1.762 | 0.677 |
热量损失/kW | 30.08 | 72.31 | 27.78 | |
方案四 | 温降/K | 2.388 | 1.702 | 0.666 |
热量损失/kW | 97.99 | 69.84 | 27.33 |
Table 4 Fluid temperature variation with depth in different schemes
项目 | 井深/m | |||
---|---|---|---|---|
0~1000 | 1000~2000 | 2000~3000 | ||
方案一 | 温降/K | 0.617 | 0.452 | 0.173 |
热量损失/kW | 25.32 | 18.55 | 7.10 | |
方案二 | 温降/K | 0.740 | 0.543 | 0.684 |
热量损失/kW | 30.37 | 22.28 | 28.07 | |
方案三 | 温降/K | 0.733 | 1.762 | 0.677 |
热量损失/kW | 30.08 | 72.31 | 27.78 | |
方案四 | 温降/K | 2.388 | 1.702 | 0.666 |
热量损失/kW | 97.99 | 69.84 | 27.33 |
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