Sustainable energy recovery from thermal processes: a review

Chen, Weidong; Huang, Zhifeng; Chua, Kian Jon

doi:10.1186/s13705-022-00372-2

Cited by 23 publications

(13 citation statements)

References 79 publications

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“…So, the maximum value of 0.4 (4/10) was allocated to inlet temperature of hot fluid, followed by 0.3 (3/10), 0.2 (2/10), and 0.1 (1/10) for heat input, mass flow rate of hot fluid, and mass flow rate of cold fluid. The weighted normalized matrix (W ij ) was determined by using equation (2).…”

Section: Multi-objective Decision Making Through Topsis Approachmentioning

confidence: 99%

“…In the modern era, consuming and recovering waste heat has become a popular strategy to minimise energy loss and environmental impacts, where sustainable practices and energy efficiency are essential [1,2]. One of the vital technologies that has proven better efficiency in this search is the heat pipe heat exchanger (HPHE), which is critical to the effective recovery of lost thermal energy.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation and optimization of heat pipe heat exchanger performance under two distinct heat transport mediums through TOPSIS approach

Sethuraman,

Muthuvelan,

Mahadevan

et al. 2024

Eng. Res. Express

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This paper presents a comprehensive thermal performance analysis of the heat pipe heat exchanger by varying the input process parameters and optimizing the best condition for waste heat recovery through the TOPSIS technique. In this work, the heat pipe is constructed with a copper tube and segmented into evaporator and condenser sections carrying hot and cold fluids with a half-fill ratio. The heat pipe is oriented in 0⁰ horizontally with the wick material made from stainless steel and works based on the capillary principle. The efficiency of the HPHE is evaluated by varying the input operational parameters, namely heat input, mass flow rate of hot fluid, inlet temperature of hot fluid, and mass flow rate of cold fluid, on response variables, specifically thermal resistance, energy balance ratio, universal heat transfer coefficient, and effectiveness. The experiment was designed for four factors at three levels as per Taguchi’s L27 orthogonal array, and the best optimising condition was determined by employing the multi-objective technique for order preference by similarity to ideal solution (TOPSIS) approach. The best input condition found was A3B1C1D3, in which the heat input was at 90 W, the mass flow rate of hot fluid was at 0.2 kg/min, the mass flow rate of cold fluid was at 0.1 kg/min, and the inlet temperature was at 60°C. The effect of process parameters and their significance on output responses was analysed by executing an analysis of variance (ANOVA) statistical method. The mathematical regression model was generated, and validation was made to investigate the prediction error percentage.

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Section: Multi-objective Decision Making Through Topsis Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental investigation and optimization of heat pipe heat exchanger performance under two distinct heat transport mediums through TOPSIS approach

Sethuraman,

Muthuvelan,

Mahadevan

et al. 2024

Eng. Res. Express

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“…The second was integration of hydrolysis production and biodiesel production by utilizing the heat source from oleic acid for preheating (160°C to 200°C). It was assumed that the total amount of waste heat was converted into electricity on the average energy e ciency of 35% [38,39] and the electricity produced by waste heat was used to replace Thailand' s grid electricity. The parameters for production of 1,000 MJ Jatropha biodiesel with waste heat recovery is illustrated in Table 6.…”

Section: Process Analysis : Improvement Of Waste Heat Recoverymentioning

confidence: 99%

“…The total amount of waste heat was converted into electricity on the average energy e ciency of 35% [38,39].…”

Section: Data Sources and Assumptionsmentioning

confidence: 99%

Evaluation of life-cycle assessment of Jatropha biodiesel processed by esterification of Thai domestic rare earth oxide catalysts

Rattanaphra¹,

Tawkaewb

Chuichulchermb

et al. 2023

Preprint

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The Thai domestic rare earth oxides, including cerium, lanthanum, and neodymium oxides with an effect of calcination temperatures (500–1000 OC), were utilized as catalysts for twelve alternatives Jatropha biodiesel via esterification reaction. This study applied LCA methodology to analyse energy efficiency and global warming impact. The net energy ratios from well-to-wheel of conventional Jatropha biodiesel using the La2O3 catalyst in all condition (0.89−1.02) are found to be potential fuels for substituting conventional diesel (0.86). The global warming impact of the studied conventional Jatropha process from well-to-wheel are 107.8−162.5 kg CO2 equivalent/1000 MJ, which are greater than that of conventional diesel by 18–44%. The results of process energy and global warming analysis showed the strong consumption of electricity use in hydrolysis reactor for converting triglyceride (Jatropha oil) to fatty acid (oleic acid). The net energy ratio values and global warming impact reduction of Jatropha biodiesel utilizing the waste heat of oleic acid, compared to conventional Jatropha biodiesel are 0.82–1.37 and 33.77–36.36%, respectively. The total global warming impact of Jatropha biodiesel with waste heat recovery including land use change typical abundance land into Jatropha crop was 5–45%, which was lower than that of conventional diesel and 47– 58% reduction relative to conventional Jatropha biodiesel. Jatropha biodiesel using La2O3 catalyst with calcination temperature of 600 oC showed the most environmental friendly of all studied fuels with relatively highest energy ratios (1.17–1.37) with and without waste heat recovery and lowest total global warming impact (47.9–70.7) as well as with and without land use change. The integration of material and process development by domestic catalysts and recovery waste heat would improve the sustainability choices of biofuels production from renewable resources for transportation fuels in Thailand.

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“…• The CO 2 adsorption of the Jatropha plantations and the CO 2 emissions from the combustion of biodiesel were considered carbon neutral because they were of biogenic origin [37,38]. • The total amount of waste heat was converted into electricity with the average energy efficiency of 35% [40,41].…”

mentioning

confidence: 99%

Evaluation of Life Cycle Assessment of Jatropha Biodiesel Processed by Esterification of Thai Domestic Rare Earth Oxide Catalysts

Rattanaphra,

Tawkaew,

Chuichulcherm

et al. 2023

Sustainability

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The Thai domestic rare earth oxides, including cerium, lanthanum, and neodymium oxides, with the effects of calcination temperatures (500–1000 °C), were utilized as catalysts for twelve Jatropha biodiesel alternatives via an esterification reaction. This study applied life cycle assessment (LCA) methodology from well-to-wheel analysis to assess energy efficiency and the global warming impact with and without land use change. The results of the life cycle analysis showed that the Jatropha biodiesel alternatives using the La2O3 catalyst in all conditions (0.89–1.06) were found to be potential fuel substitutes for conventional diesel (0.86) in terms of net energy ratios; however, the results showed that they generated a higher global warming impact. Considering the improvement process of Jatropha biodiesel in the utilization of waste heat recovery, the Jatropha biodiesel reduced the impacts of the net energy ratios and the global warming impact by 22–24% and 34–36%, respectively. The alternative Jatropha biodiesel using the La2O3 catalyst with a calcination temperature of 600 °C was shown to be the most environmentally friendly of all the studied fuels; relatively, it had the highest energy ratios of 1.06–1.37 (with and without waste heat recovery) and the lowest total global warming impact of 47.9–70.7 kg CO2 equivalent (with land use change). The integration of the material and process development by domestic catalysts and the recovery of waste heat would improve the sustainability choices of biofuel production from renewable resources for transportation fuels in Thailand.

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Sustainable energy recovery from thermal processes: a review

Cited by 23 publications

References 79 publications

Experimental investigation and optimization of heat pipe heat exchanger performance under two distinct heat transport mediums through TOPSIS approach

Experimental investigation and optimization of heat pipe heat exchanger performance under two distinct heat transport mediums through TOPSIS approach

Evaluation of life-cycle assessment of Jatropha biodiesel processed by esterification of Thai domestic rare earth oxide catalysts

Evaluation of Life Cycle Assessment of Jatropha Biodiesel Processed by Esterification of Thai Domestic Rare Earth Oxide Catalysts

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