圧力調整ステーションにおける低炭素天然ガス予熱のための平板型集熱器形状のCFDパラメトリック解析と設計最適化
CFD-based parametric analysis and design optimization of flat-plate collector geometry for low-carbon natural gas preheating in pressure regulating stations (原題)
Mohammad Moondanizadeh, Pooria Kianoush
🤖 gxceed AI 要約
日本語
都市ガス整備基地での天然ガス予熱を、燃料消費型から太陽熱平板集熱器へ置き換える可能性をCFDで検討した。質量流量・吸収材・板厚・管形状・配置などを網羅的にパラメトリック解析し、流量増加で効率14%向上、銅吸収材は鋼より35%高効率、吸収板を管の下に配置すると26%改善するなど定量指針を示した。化石燃料消費とCO₂排出の削減に資する設計最適化を提示する。
English
A 3D CFD study optimizes flat-plate solar collector geometry for preheating natural gas at pressure regulating stations, replacing fuel-based preheating. Parametric analysis of flow rate, absorber material, plate thickness, tube shape, and positioning yields quantitative efficiency gains (e.g., +14% from higher flow, +35% for copper vs. steel, +26% for absorber below tubes). Offers actionable design guidance to cut fuel use and CO2 emissions in gas infrastructure.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本のGX文脈では、都市ガス・天然ガスインフラの脱炭素化（燃料転換・省エネ）はScope1排出削減に直結する。SSBJ・有報でのScope1/2開示やエネルギー転換投資の根拠として、こうした設備最適化の定量エビデンスは実務的に有用。ただし開示制度そのものを扱う論文ではない。
In the global GX context
Globally, this contributes to the decarbonization of gas transmission and distribution infrastructure, an area often overlooked in TCFD/ISSB transition planning. It provides engineering-level evidence for Scope 1 reduction in the oil & gas sector, relevant to transition finance and net-zero pathway assessments, though it does not engage disclosure frameworks directly.
👥 読者別の含意
🔬研究者:CFDを用いた太陽熱集熱器のパラメトリック最適化手法と、天然ガス予熱への応用可能性に関する定量データを提供する。
🏢実務担当者:ガス圧力調整設備の省エネ・脱炭素化設計において、集熱器形状・材料選定の定量的な指針として活用できる。
🏛政策担当者:天然ガスインフラの脱炭素化に向けた技術的選択肢として、省エネ規制や補助制度の設計に参考となる。
📄 Abstract（原文）
Natural gas must be preheated before pressure reduction at city gate stations to prevent hydrate formation and ensure safe, uninterrupted operation. Conventional preheating systems consume natural gas as fuel, causing significant operational costs and greenhouse gas emissions. A comprehensive numerical investigation of flat-plate solar collectors as an alternative preheating solution for natural gas pressure regulating stations is presented. Collector design parameters are optimized to maximize thermal efficiency. A three-dimensional computational fluid dynamics (CFD) model was developed using ANSYS Fluent and validated against experimental data from the literature. A systematic parametric analysis examined mass flow rate (0.02–0.05 kg/s), absorber material (copper, aluminum, steel), plate thickness (0.1–0.6 mm), tube geometry (circular, hexagonal, square, triangular), absorber positioning (below, mid-height, above), absorptivity (0.8–0.98), glass transmissivity (0.82–0.96), and solar irradiance (200–1200 W/m²). Increasing mass flow rate from 0.02 to 0.05 kg/s improves efficiency by 14%. Copper absorbers achieve 35% higher efficiency than steel. Increasing plate thickness from 0.1 to 0.6 mm enhances efficiency by 15%. Circular tubes outperform triangular geometries by 23%. Maximum efficiency is achieved when the absorber is positioned beneath the tubes, yielding a 26% improvement. Sensitivity analysis identifies mass flow rate as the most influential parameter, followed by absorber material and plate thickness. Efficiency exhibits asymptotic behavior at irradiance levels exceeding 800 W/m² due to coupled ambient temperature effects. The findings provide quantitative, actionable guidance for optimizing solar preheating systems in natural gas infrastructure, offering a pathway to significantly reduce fossil fuel consumption and associated CO₂ emissions.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.rineng.2026.113507first seen 2026-10-14 05:04:37
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