Title: Analysis of exergy transfer characteristics and identification of weak links in the heating and temperature maintenance system of crude oil storage tanks

Authors: Qinglin Cheng; Yaming Qi; Xiaona Wang; Shaosong Zhao; Yue Liu

Addresses: Key Laboratory of Ministry of Education for Enhancing Oil and Gas Recovery Ratio, Northeast Petroleum University, Daqing, Heilongjiang 163318, China ' Key Laboratory of Ministry of Education for Enhancing Oil and Gas Recovery Ratio, Northeast Petroleum University, Daqing, Heilongjiang 163318, China; CNPC (Xin jiang) Petroleum Engineering Co., Ltd., Design Branch, Karamay, Xinjiang 834000, China ' PipeChina Pipeline Technology Development Co., Ltd., Tianjin 300452, China ' Key Laboratory of Ministry of Education for Enhancing Oil and Gas Recovery Ratio, Northeast Petroleum University, Daqing, Heilongjiang 163318, China ' Key Laboratory of Ministry of Education for Enhancing Oil and Gas Recovery Ratio, Northeast Petroleum University, Daqing, Heilongjiang 163318, China

Abstract: In this paper, the rationality of energy use is evaluated from the perspective of energy quality for the heating and temperature maintenance process of large floating roof crude oil storage tanks. The multi-link correlation analysis model of heating and temperature maintenance process of storage tank is constructed, and the variation law of phenomenological characteristic index group of exergy transfer is analysed. Three evaluation indexes of exergy resistance rate, exergy loss rate and sensitivity factor were determined and evaluated by TOPSIS method. The results show that the energy consumption from coil to oil is the weakest.

Keywords: floating-roof tank; crude storage; exergy transfer analysis; energy consumption analysis; energy conservation.

DOI: 10.1504/IJEX.2025.144560

International Journal of Exergy, 2025 Vol.46 No.2, pp.93 - 116

Received: 03 Sep 2024
Accepted: 16 Nov 2024
Published online: 19 Feb 2025 *

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