Next Article in Journal
Reliability and Maintenance Prioritization Analysis of Combined Cooling, Heating and Power Systems
Previous Article in Journal
Design, Fabrication, and Performance Test of a 100-W Helical-Blade Vertical-Axis Wind Turbine at Low Tip-Speed Ratio
Previous Article in Special Issue
A Comprehensive Overview of CO2 Flow Behaviour in Deep Coal Seams
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle
Energies 2018, 11(6), 1518; https://doi.org/10.3390/en11061518

Optimizing Waste Heat Utilization in Vehicle Bio-Methane Plants

1,2,3,4
,
5
,
4
,
1,2,3,* and 1,2,3
1
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, NO. 2 Nengyuan Road, Tianhe District, Guangzhou 510640, China
2
CAS Key Laboratory of Renewable Energy, Guangzhou 510640, China
3
Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
4
College of Engineering, Northeast Agricultural University, Harbin 150030, China
5
Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510000, China
*
Author to whom correspondence should be addressed.
Received: 5 May 2018 / Revised: 5 June 2018 / Accepted: 6 June 2018 / Published: 11 June 2018
(This article belongs to the Collection Bioenergy and Biofuel)
View Full-Text   |   Download PDF [3726 KB, uploaded 11 June 2018]   |  

Abstract

Current vehicle bio-methane plants have drawbacks associated with high energy consumption and low recovery levels of waste heat produced during the gasification process. In this paper, we have optimized the performance of heat exchange networks using pinch analysis and through the introduction of heat pump integration technology. Optimal results for the heat exchange network of a bio-gas system producing 10,000 cubic meters have been calculated using a pinch point temperature of 50 °C, a minimum heating utility load of 234.02 kW and a minimum cooling utility load of 201.25 kW. These optimal parameters are predicted to result in energy savings of 116.08 kW (19.75%), whilst the introduction of new heat pump integration technology would afford further energy savings of 95.55 kW (16.25%). The combined energy saving value of 211.63 kW corresponds to a total energy saving of 36%, with economic analysis revealing that these reforms would give annual savings of 103,300 USD. The installation costs required to introduce these process modifications are predicted to require an initial investment of 423,200 USD, which would take 4.1 years to reach payout time based on predicted annual energy savings. View Full-Text
Keywords: vehicle bio-methane; pinch analysis; heat pump integration; energy conservation; economic efficiency vehicle bio-methane; pinch analysis; heat pump integration; energy conservation; economic efficiency
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Zhen, F.; Zhang, J.; Li, W.; Sun, Y.; Kong, X. Optimizing Waste Heat Utilization in Vehicle Bio-Methane Plants. Energies 2018, 11, 1518.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top