Next Article in Journal
New Interface for Assessing Wellbore Stability at Critical Mud Pressures and Various Failure Criteria: Including Stress Trajectories and Deviatoric Stress Distributions
Next Article in Special Issue
Operability and Technical Implementation Issues Related to Heat Integration Measures—Interview Study at an Oil Refinery in Sweden
Previous Article in Journal
A Novel Fault Diagnosis Method for Power Transformer Based on Dissolved Gas Analysis Using Hypersphere Multiclass Support Vector Machine and Improved D–S Evidence Theory
Open AccessArticle

Energy-Saving Strategies and their Energy Analysis and Exergy Analysis for In Situ Thermal Remediation System of Polluted-Soil

1
School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, China
2
Institute of Engineering Thermophysics, North China University of Water Resources and Electric Power, Henan 450045, China
3
Advanced Research Center of Thermal and New Energy Technologies, Xingtai Polytechnic College, Hebei 054035, China
4
School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
5
Chengyi Academy of PKUHS, Peking University, Beijing 100080, China
*
Author to whom correspondence should be addressed.
Energies 2019, 12(20), 4018; https://doi.org/10.3390/en12204018
Received: 8 October 2019 / Revised: 18 October 2019 / Accepted: 20 October 2019 / Published: 22 October 2019
(This article belongs to the Special Issue Enhancement of Industrial Energy Efficiency and Sustainability)
The environmental safety of soil has become a severe problem in China with the boost of industrialization. Polluted-soil thermal remediation is a kind of suitable remediation technology for large-scale heavily contaminated industrial soil, with the advantages of being usable in off-grid areas and with a high fuel to energy conversion rate. Research on energy-saving strategies is beneficial for resource utilization. Focused on energy saving and efficiency promotion of polluted-soil in situ thermal remediation system, this paper presents three energy-saving strategies: Variable-condition mode (VCM), heat-returning mode (HRM) and air-preheating mode (APM). The energy analysis based on the first law of thermodynamics and exergy analysis based on the second law of thermodynamics are completed. By comparing the results, the most effective part of the energy-saving strategy for variable-condition mode is that high savings in the amount of natural gas (NG) used can be achieved, from 0.1124 to 0.0299 kg·s−1 in the first stage. Energy-saving strategies for heat-returning mode and air-preheating mode have higher utilization ratios than the basic method (BM) for the reason they make full use of waste heat. As a whole, a combination of energy-saving strategies can improve the fuel savings and energy efficiency at the same time. View Full-Text
Keywords: contaminated soil; polluted soil; thermal desorption; thermal remediation; energy analysis and exergy analysis; energy saving contaminated soil; polluted soil; thermal desorption; thermal remediation; energy analysis and exergy analysis; energy saving
Show Figures

Figure 1

MDPI and ACS Style

Li, T.-T.; Li, Y.-Z.; Zhai, Z.-Z.; Li, E.-H.; Li, T. Energy-Saving Strategies and their Energy Analysis and Exergy Analysis for In Situ Thermal Remediation System of Polluted-Soil. Energies 2019, 12, 4018. https://doi.org/10.3390/en12204018

AMA Style

Li T-T, Li Y-Z, Zhai Z-Z, Li E-H, Li T. Energy-Saving Strategies and their Energy Analysis and Exergy Analysis for In Situ Thermal Remediation System of Polluted-Soil. Energies. 2019; 12(20):4018. https://doi.org/10.3390/en12204018

Chicago/Turabian Style

Li, Tian-Tian; Li, Yun-Ze; Zhai, Zhuang-Zhuang; Li, En-Hui; Li, Tong. 2019. "Energy-Saving Strategies and their Energy Analysis and Exergy Analysis for In Situ Thermal Remediation System of Polluted-Soil" Energies 12, no. 20: 4018. https://doi.org/10.3390/en12204018

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

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop