Thermal modeling of indirect water heater in city gate station of natural gas to evaluate efficiency and fuel consumption

Seyed Alireza Mostafavi and Mohammad Shirazi

Energy, 2020, vol. 212, issue C

Abstract: In this paper, a comprehensive model of indirect water heater for a pressure reduction station of natural gas has been presented. Effiiency and fuel consumption of heater have been estimated by applying energy and mass conservation equations. Three terms of energy including heat absorbed by natural gas, heat transferred to environment from stack and heat loses to environment from heater body have been evaluated. Thermal properties of natural gas has been calcualated using AGA8 state equation. Therefore, the model is a function of climate, heater geometry and natural gas characteristics including temperature, pressure and its composition. The results are compared with data recorded from real station in Iran (Arak, Kheriabad and Malekabad stations) and very good agreement has been observed. Reducing temperature and increasing pressure of inlet gas, thickening glass wool insulation and rising fire tube radius led to an increase in heater’s thermal efficiency from 20 to 60% and consequently fuel consumption of heater was reduced. Finally, choosing the sutible geometery yeilded a higher heater efficincy with a raise from 44% to 70%.

Keywords: Natural gas presure reduction; City gate station; Indirect water heater; Efficiency; Gas composition; Geometry (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544220314973
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:212:y:2020:i:c:s0360544220314973

DOI: 10.1016/j.energy.2020.118390

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().