Design and optimization of deep coaxial borehole heat exchangers for cold sedimentary basins

被引：25

作者：

Gascuel, Violaine ^{[1
,2
]}

Raymond, Jasmin ^{[1
]}

Rivard, Christine ^{[2
]}

Marcil, Jean-Sebastien ^{[3
]}

Comeau, Felix-Antoine ^{[1
]}

机构：

[1] Inst Natl Rech Sci, 490 Rue Couronne, Quebec City, PQ G1K 9A9, Canada

[2] Nat Resources Canada, Geol Survey Canada, Ottawa, ON, Canada

[3] Derena Geosci, Levis, PQ, Canada

来源：

GEOTHERMICS | 2022年 / 105卷

关键词：

Hydrocarbon wells; Repurposing hydrocarbon wells; Heat pump; Ground heat exchanger; Geothermal; Direct; -use; GEOTHERMAL-ENERGY; ABANDONED OIL; THERMAL PERFORMANCE; COUPLED HEAT; PUMP SYSTEMS; FIELD-TEST; SIMULATION; AQUIFERS; PARAMETERS; INSIGHTS;

D O I：

10.1016/j.geothermics.2022.102504

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Heating performance of deep borehole heat exchangers (DBHEs) is heavily impacted by its design and operating flow rate. Here, various designs of coaxial DBHEs were numerically simulated and compared for 1 year of continuous operation in a cold sedimentary basin using the FEFLOW software. Factors affecting performance, including: (1) depth, (2) repurposing an oil and gas (O&G) well or drilling a larger one, (3) repurposing options, (4) inner pipe material, made of either vacuum insulated tubing (VIT) or high-density polyethylene and (5) grout with different thermal conductivity were evaluated. Where an O&G well is available, the most cost-efficient option is repurposing, with the best performance obtained from the deepest and largest diameter wells. While VIT inner pipes performed better in some designs, their performance did not compensate for their cost.

引用

页数：36

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