Optimal Mixture Ratio Research Articles

Reconstructed Ballistic Data Versus Wax Regression-Rate Intrusive Measurement in a Hybrid Rocket

Burning tests of a laboratory-scale hybrid rocket engine were carried out with gaseous oxygen and a microcrystalline-wax-based fuel to look into the feasibility of using an intrusive resistor-based sensor for measuring the fuel regression rate. This initial screening was driven by the need for real-time control of the oxidizer-to-fuel ratio in altering-intensity swirling-flow-type hybrid rocket engines aiming at performance optimization. A traditional ballistic reconstruction technique was critically revised in order to build up a framework for comparison with the measured data; with the measured aft-chamber pressure and oxygen mass flow rate time histories, the fuel regression rate and port diameter were reconstructed over the firing by estimating the combustion efficiency with the constraint that calculated and measured fuel mass consumed are equal. This technique invariably suffers from the issue of presenting multiple solutions for the fuel mass flow rate in the proximity of the optimum mixture ratio, for which a novel variable-efficiency approach is proposed. Reconstructed data show that regression rate is nearly constant in each firing, yielding dependence upon the port diameter other than the mass flux. Resistor-sensor raw data displayed large deviation from the ballistic results for the slower burning rate of the sensor support. A detailed analysis is presented.

The Production of Liquid Fuel from Plastic Wastes by Using Waste Garbage Power Plant: Study on the Effect of Electric Load and Fuel/Gasoline to Solar Ratio

The type of plastic waste that is often a problem in many cities in Indonesia is Polyethylene Terephthalate (PET), his is due to the plastic waste plastic waste bags has no longer economic value. One of the goals of plastic waste processing is usng it as a raw material for the Waste Garbage Power Plant (PLTSa). The most profitable in handling plastic waste by converting plastic waste into fuel oil as an alternative energy source because plastic is basically derived from petroleum. Plastic also has a fairly high heating value equivalent to gasoline and diesel fuel. Some studies related to plastic processing have not been integrated from the production process to downstream products in the form of electric products to get the overall level of plant efficiency. Therefore a research of plastic waste power plants needs to be done at the prototype level to determine the performance of the fuel and the level of efficiency of the resulting assemblers. The Pyrolysis Reactor Prototype Unit can be used to convert plastic bottle waste into liquid fuel with a yield of 56.26% carried out at a process temperature of 170 oC and the resulting heating value reaches 19644 Btu/lb close to the heating value of Pertamina Gasoline. The generator system performance test for the liquid fuel mixture (BBC) with Gasoline and Diesel has an optimal mixture ratio in the BBC - Bensi / Solar mixture 3: 2 with an optimal load of 800 Watt. In the generator system performance test for liquid fuel mixture (BBC) with Gasoline/Diesel is more optimal for comparison of BBC fuel with Gasoline, because for the BBC mixture with Gasoline in all generator system comparison values occur ignition. Whereas BBC with Solar does not ignite at a ratio of 0: 5, 1: 4 and 2: 3.

Effect of hybrid nanofluids mixture ratio on the performance of a photovoltaic thermal collector

Solar photovoltaic-thermal (PV/T) collectors, are hybrid collectors used to convert solar radiation into usable thermal and electrical energy. Recently, the field of research on PV/T is has focused on improving the efficiency of the PV/T collector by replacing the conventional heat transfer fluids (HTFs) with nanofluids. This article investigates the effect of hybrid nanofluids mixture ratio on the useful energy and overall efficiency of a PV/T collector operating with Al2O3-ZnO water nanofluid as the HTF. Experiments to measure the thermophysical properties of the hybrid nanofluids were conducted for various temperatures, volume concentrations, and mixture ratios, furthermore, accurate correlation models were proposed. Metrological data and energy output readings collected from the PV solar farm at Cyprus International University were used to validate our model. The study observed that at the optimum mixture ratio (0.47 of Al2O3 in the hybrid), the electrical, thermal, and exergy efficiencies of the PV/T collector are 13.8%, 55.9%, and 15.13% respectively. Also, the cell temperature drops by 21% when the mass flow rate is 0.1 kg/s as compared to when it is 0.01 kg/s. Finally, the study concludes that by using the Al2O3-ZnO hybrid nanofluid an overall peak thermal efficiency of 91% can be attained, and this represents a 34% enhancement in the collector's performance when compared to water.

Heat transfer characteristics of plate heat exchanger using hybrid nanofluids: effect of nanoparticle mixture ratio

Energetic and exergetic analyses of the plate heat exchanger are experimentally performed using Al2O3–TiO2 hybrid nanofluid as a coolant for sub-ambient temperature application to study the effect of nanoparticle volume ratio at various nanofluid flow rates ranging 2.0–4.0 lpm and inlet temperatures ranging 10–25 °C. The Al2O3–TiO2 hybrid nanofluids of 0.1% total volume concentration with different Al2O3–TiO2 ratios (5:0, 4:1, 3:2, 2:3, 1:4 and 0:5) are used as a coolant. Effects of nanoparticle mixture ratio, flow rate and inlet temperature on the heat transfer rate, heat transfer coefficient, pump work, performance index, and second law efficiency are investigated. Correlations are proposed to predict the Nusselt number for DI water as well as hybrid nanofluid. A maximum enhancement of around 16.91% and 4.5% are observed for convective heat transfer coefficient and heat transfer rate with Al2O3 (5:0) hybrid nanofluid along with 0.013% enhancement (insignificant) in the pump work for TiO2 (0:5) hybrid nanofluid. The maximum reduction in exergetic efficiency of 4.01% is observed for TiO2 (0:5) hybrid nanofluid. The study shows that the energetic and exergetic performances decrease continuously with the increase of the TiO2 ratio in the mixture, yielding no optimum nanoparticle mixture ratio.

Optimizing Food Waste Composting Parameters and Evaluating Heat Generation

The optimal initial moisture content and seeding proportion with mature compost (microbial inoculant) during food waste composting were investigated. This involved six different moisture contents (42%, 55%, 61%, 66%, 70%, and 78%) and four different mature compost seeding amounts (0%, 10%, 20%, and 30% w/w). The temperature variation of these different setups during the first four days of composting was used to determine the most effective one. Our findings showed that the initial moisture contents of 55–70% and the 20% w/w of mature compost were optimal for effective food waste composting. A 400 kg compost pile with the optimal compost mixture ratio was then used to study the evolution and spatial distribution of the temperature during a 30-day composting period. Finally, the heat produced during the 30-day composting process was estimated to be 2.99 MJ/kg. Further investigations, including a cost–benefit analysis from a pilot facility, would be required to comprehensively conclude the feasibility of food waste composting as a bioenergy source.

RESEARCH OF THE PROCESS OF OBTAINING INTERESTERIFIED FAT FOR MARGARINE PRODUCTION ON THE BASIS OF SUNFLOWER OIL AND PALM STEARIN

The study presents the results of transesterification of a mixture of sunflower oil and palm stearin in various proportions and dilatometric analysis of the obtained transesterifications was carried out. For example, the ratios in the mixture of sunflower oil and palm stearin 15/85, 25/75, 30/70, 50/50 were subjected to transesterification in the laboratory, and the transesterifications used for the spread and margarine were obtained, and the optimal mixture ratios were determined. By dilatometric analysis, it was found that it is possible to obtain interesterificates in the ratio of a mixture of sunflower oil and palm stearin at 50/50 for a good spreading and high plasticity spread (t = 31 ℃), at 30/70 for margarine providing porosity for baking (t = 39 ℃) , at 25/75 to margarine used for puff pastry (t = 43 ℃). In addition, the fatty acid content of sunflower oil and palm stearin used in the experiments was also determined.

Tracking of a Gunning Jet Using Particle Filtering in Infrared Image Sequences

Vessels for the liquid metal have an inner lining of refractory bricks to withstand the high temperatures of molten steel. To counteract the wear of the lining, gunning is used as a common procedure in steelmaking to prolong the usability of the lining. During gunning, a concretelike, moist refractory mass is applied to the lining surface by pumping it through a nozzle and pointing the spouting mass jet at the desired area. The optimal machine settings, e.g., pressure levels and mixture ratio, are crucial to the maintenance quality. These parameters are reflected in the gunning jet appearance and can be observed and interpreted by experienced operators. Video tracking of the gunning jet facilitates remote observation and is key to automated feature analysis. In this article, we focus on tracking the jet using infrared images. In particular, we use a particle filter with online learning to update the reference template. Template matching is used for tracker stabilization and object verification. We use a parametric model of the gunning jet for feature extraction and dynamic reference template generation. For tracker initialization, we combine template matching with geometric- and temperature-based constraints. We provide experiments on real and synthetic data to demonstrate the capabilities of the presented tracker.

Investigation on pulsed discharge mode in SF6-C2H6 mixtures

The non-chain chemical HF(DF) laser is one of the most powerful electrically-driven lasers operating in mid-infrared, in which SF6-C2H6 mixtures are often used as lasering media. Due to the electronegativity of SF6, the discharge in SF6-C2H6 presents a complicated discharge mode. To achieve reproducible pulsed laser output, pulsed discharge in SF6-C2H6 mixtures is investigated for discharge mode using plane electrodes assisted by array pre-ionization spark pins in cathode surface. Firstly, two modes can be distinguished. One mode is called the self-sustained volume discharge (SSVD), which is characterized by spatial uniformity in the discharge gap and pulse to pulse repeatability. On the contrary, another mode includes random arc passages in the discharge gap and therefore cannot conduct lasering. By varying discharge conditions (gap voltage, gas pressure, etc) two discharge modes are observed. Secondly, the holding scope of the SSVD mode is analyzed for the optimal mixture ratio of 20:1, and the boundary tend of the holding scope of SSVD indicates there exists maximum gas pressure and maximum charging voltage for SSVD. Finally, the peak current of SSVD relates positively to charging voltage, while negatively to gas pressure, from which it is drawn that synchronous electron avalanches initiated by the sliding array overlap spatially into SSVD and thus SSVD is essentially an α ionization avalanche.

Synthesis and Characterization of Chitosan/Carrageenan/Hydroxyethyl cellulose blended gels

Polysaccharide-based biomaterials are a developing class in various fields such as biomedicine, wastewater treatment, functional membranes and flocculation. Most of the polysaccharides are derivative from sources natural; mainly, chitosan (CS), Carrageenan (AG) and Hydroxyethyl cellulose (HEC). In this work, a number of ternary mixture blends of Chitosan/Carrageenan/Hydroxyethyl Cellulose (CS/AG/HEC) at different ratios (considering Chitosan as the main component) are synthesized, chemically identified and characterized. The optimum mixture ratio for a better gel with significantly higher viscoelastic properties is obtained by an Experimental Design using a model of Response Surface Methodology (RSM). Gels derived under the optimized conditions are found for a given composition percentage equals to 51/42/07 of CS/AG/HEC respectively. Characterization of the optimized gel is performed by Fourier Transform spectroscopy Infrared (FTIR) as well as by Thermal Gravimetric Analysis and Differential Scanning Calorimetry (TGA/DSC). The viscoelastic properties of the obtained blended CS gels are also investigated through rheological measurement. CS blended gel FTIR spectrum results comparing to those of each component (i.e. Chitosan, Carrageenan and Hydroxyethyl Cellulose), show from chemical structures that there is an interaction between the three components. The thermal analyses results also suggest that the interaction between Chitosan, Carrageenan and Hydroxyethylcellulose may well occur to form a gel with more stability. And this is confirmed by the highest rate point of the weight loss change revealed on the peak of the first derivative curve; observed at a temperature of 112.42°C. Observations obtained from the rheological measurement also suggested the existence of an interaction between the three polymers, and a pseudo-plastic non-Newtonian behaviour of Chitosan blended gel is revealed. Flow measurements also show that temperatures variations have an effect on the blended gel viscosity. Hence, higher viscosities are found for lower temperatures besides a non-Newtonian behaviour is observed at all temperatures. Furthermore, negative slopes are observed indicating the destruction of internal structure by overcoming the internal forces, thus the blended gel has a shear thinning behavior. Moreover, the absence of a second Newtonian plateau indicates the absence of a complete loss of internal forces, so it may well be assumed that the gel still retains its internal structure in the applied shear rate regime.

Experimental Study on Performance Influencing Factors and Reasonable Mixture Ratio of Desert Sand Ceramsite Lightweight Aggregate Concrete

The utilization of desert sand for making ceramsite lightweight aggregate concrete is proposed to make full use of local natural resources in the development of a new type of lightweight and load‐bearing wall material with good energy conservation, waste utilization, and thermal insulation performances. An orthogonal test was conducted to analyze the effects of the water‐binder ratio, sand ratio, desert sand substitution rate, and fly ash content on the slump, apparent density, and tube crushing strength of desert sand ceramsite lightweight aggregate concrete. Thus, the optimal mixture ratio of the desert sand ceramsite concrete was obtained for the LC20 and LC25 strength grades. Based on two reasonable mixture ratios, the physical and mechanical properties of the desert sand ceramsite concrete were investigated. The results revealed that the water‐binder ratio, sand ratio, and desert sand substitution rate were the main influencing factors, and the influence law is essentially consistent with that of ordinary desert sand concrete. Based on the reasonable substitution rate of desert sand, the main physical and mechanical properties of the desert sand ceramsite lightweight aggregate concrete, such as the tube crushing strength, tensile strength, and thermal conductivity, satisfied the requirements of the Chinese code’s specifications. In summary, desert sand can replace ordinary sand in ceramsite lightweight aggregate concrete for the production of new lightweight and load‐bearing wall materials.

Anaerobic digestion of cattle manure, corn silage and sugar beet pulp mixtures after thermal pretreatment and kinetic modeling study

In this study, biogas production was investigated from cattle manure (CM), corn silage (CS) and sugar beet pulp (SBP) mixtures under mesophilic conditions. In anaerobic digestion (AD), CM, CS and SBP were mixed in different ratios and the optimum mixture ratio was determined as 2:1:1, w/w/w respectively. In this mixture, biogas production was 180.5 mL/g TS. After the optimum mixing ratios of CM, CS and SBP were determined, thermal pretreatments were applied to this mixture ratio. Thermal pretreatments were performed at 100, 120, 150 and 180 °C with 10, 20, 30, 60 and 120 min for each temperature. Considering biogas production after thermal pretreatment, the best thermal pretreatment time was determined as 60 min for all pretreatment temperatures. The highest biogas yield was 362.1 mL/g TS in the reactor which is pretreated at 180 °C for 60 min. After thermal pretreatment at 180 °C for 60 min, the SCOD value in the reactor increased by 124.6% compared to the control. This reactor produced 100.6% higher biogas production compared to the control. In addition, the solubilization of cellulose, hemicellulose and lignin in this reactor was 38.2%, 32.9% and 23.2%, respectively. Cumulative biogas production (CBP) fitted to modified Gompertz and modified Bertalanffy models.

Effects of adhesives on properties and mechanism of the ultra-thin pavement

A new type of epoxy resin adhesive was prepared by mixing ratio tests, which can apply in the ultra-thin pavement with the high flexibility and bond strength. The effects of toughening agents, diluents and curing agents with different types and dosages on the tensile properties of adhesives were evaluated by tensile tests. Afterwards, the scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to investigate the mechanism of various additives. According to the strength test, the optimum mixture ratio composition A (epoxy resin and modifiers) is that epoxy resin E-51: epoxy resin E-44: toughening agent F1: diluent D1: fire retardant = 50:50:20:10:8; the component B (curing agent and modifiers) is that curing agent H1:accelerator:coupling agent = 70:10:2. Meanwhile, the effect of toughening and interpenetrating was realised through the network formed, which caused by the intertwining of polyurethane (F1) and epoxy resin in the mixed system; the diluents improved ductility by reducing the crosslinking density of adhesives; the amino group in the curing agent reacted with the epoxy group. While the phenomenon of agglomeration within the paving material was caused by the excess number of adhesives, that resulting in a low reaction speed and slow strength formation. And then the colloidal stone ratio was determined to be 1:4.

Enhanced co-generation of cellulosic ethanol and methane with the starch/sugar-rich waste mixtures and Tween 80 in fed-batch mode

BackgroundThe mixed-feedstock fermentation is a promising approach to enhancing the co-generation of cellulosic ethanol and methane from sugarcane bagasse (SCB) and molasses. However, the unmatched supply of the SCB and molasses remains a main obstacle built upon binary feedstock. Here, we propose a cellulose–starch–sugar ternary waste combinatory approach to overcome this bottleneck by integrating the starch-rich waste of Dioscorea composita Hemls. extracted residue (DER) in mixed fermentation.ResultsThe substrates of the pretreated SCB, DER and molasses with varying ratios were conducted at a relatively low solids loading of 12%, and the optimal mixture ratio of 1:0.5:0.5 for the pretreated SCB/DER/molasses was determined by evaluating the ethanol concentration and yield. Nevertheless, it was found that the ethanol yield decreased from 79.19 ± 0.20 to 62.31 ± 0.61% when the solids loading increased from 12 to 44% in batch modes, regardless of the fact that the co-fermentation of three-component feedstock was performed under the optimal condition defined above. Hence, different fermentation processes such as fed-batch and fed-batch + Tween 80 were implemented to further improve the ethanol concentration and yield at higher solids loading ranging between 36 and 44%. The highest ethanol concentration of 91.82 ± 0.86 g/L (69.33 ± 0.46% of theoretical yield) was obtained with fed-batch + Tween 80 mode during the simultaneous saccharification and fermentation at a high solids loading of 44%. Moreover, after the ethanol recovery, the remaining stillage was digested for biomethane production and finally yielded 320.72 ± 6.98 mL/g of volatile solids.ConclusionsIntegrated DER into the combination of SCB and molasses would be beneficial for ethanol production. The co-generation of bioethanol and biomethane by mixed cellulose–starch–sugar waste turns out to be a sustainable solution to improve the overall efficacy in biorefinery.

Magneto-elastic properties of isotropic MR elastomers with a tri-modal particle size distribution

Magnetorheological (MR) elastomers, which undergo a change in their shape, physical and mechanical properties as a response to external magnetic fields, belongs to the family of filled elastomer. In order to determine whether different particle size combinations might influence the composite's behavior, a series of complicated multiphase materials that have stable performance are successfully prepared in the present study. The related magneto-mechanical coupling behavior of the MR elastomers is evaluated experimentally and theoretically. The results demonstrate that the particle size distribution had an important influence on the mechanical properties of the hybrid MR elastomers. In addition, there was an optimal mixture ratio for the large, medium, and small particles. By applying a modified constitutive relationship of hyperelasticity, the cycle deformation behaviors of the MR elastomers under a magnetic field environment are subsequently explained. Many of the qualitative theoretical results were in good agreement with experimental observations. This study provides a convenient approach for the investigation of the mechanical properties and behavior of such soft magnetic composites for use in engineering applications.

Enhanced performance of near infrared and broad spectral response organic photodiodes exploiting NPB as electron blocking layer

Near infrared (NIR) and broad spectral (BS) responsive organic photodiodes (OPDs) have broad application prospects because of their unique characteristics. In order to fabricate excellent devices, suppressing dark currents under reverse bias is a key indicator to improve the performance of OPDs. Here we report a NIR-OPD and a BS-OPD exploiting NPB as electron blocking layer which can effectively suppressed the dark current of the devices. For the NIR-OPD, a decrease of 61% for the dark current has achieved at an optimized NPB thickness of 10 nm, and the performance are improved accordingly. Compare with no NPB device, the photoresponsivity (R), specific detectivity (D*) and external quantum efficiency (EQE) increase probably 25%, 100% and 25% under 780 nm wavelength irradiation, respectively. For the BS-OPD, the effects of the mixture ratio of the SnPc:PTCDA bulk heterojunction has been investigated, where SnPc denotes Tin(II) phthalocyanine and PTCDA denotes 3,4,9,10-perylenete-acarboxylic dianhydride. The results show that at the ratio of 3:2, the photo responsivity is maximal. At this optimized mixture ratio, the R, D* and EQE of the device improved at least 250%, 61% and 78%, respectively.

Evolution of properties under realistic curing conditions of calcined ginger nut grouting mortars used in anchoring conservation of earthen sites

Abstract Calcined ginger nut (CGN) has been applied in grouting mortars for anchoring unstable earthen sites, but the lack of scientific research limits its application. In this study, CGN-based grouts admixed with fly ash (F), quartz sand (S), or both are evaluated. To explore the optimal mixture ratios, three types of mixing groups (five proportion gradients in each group) are established. All the grout specimens are buried and maintained outdoors, and their physical (shrinkage rate, density, elastic wave velocity, and permeability) and mechanical properties are continuously examined over 180 days. The solidification processes at different ages are simultaneously observed by means of scanning electron microscopy (SEM) images. The results indicate that the physical properties of grouts are influenced significantly by initial moisture content but then remain steady for approximately 15 days. Quartz sand can effectively reduce the shrinkage rate of grouts as well as adjust their density and permeability, and might be considered as an ideal mixing material for CGN. In the solidification process, grouts are rapidly solidified after the initial hydration reaction, and the carbonation reaction in the later stage constantly improves their mechanical strength, with physical properties kept relatively stable. SEM images show fly ash and quartz sand particles are cemented by CaCO3 crystals. Through comprehensive comparison, the grouts with the mass ratio of CGN and S at 1:1 are found to better satisfy requirements that grouts should be compatible with earthen sites.

Study on mechanical properties of slag active powder concretethe

Concrete with high durability and green environmental protection is an important direction for future research on cement-based materials. As a kind of new building material with super high performance, reactive powder concrete (RPC) will play an important role in future construction. In this paper, slag was selected as the main cementitious material of RPC, and the influence of the content change of the admixture in RPC: steel fiber, glass fiber and polypropylene fiber on the mechanical properties of RPC was studied to analyze and select the optimal dosage of each component and take it as the reference of the optimal mixture ratio of RPC.

Study on Physical‐Mechanical Properties and Microstructure of Expansive Soil Stabilized with Fly Ash and Lime

Fly ash and lime have been frequently employed to reduce the swelling potential of expansive soils. Laboratory experiments, scanning electron microscopy (SEM), and X‐ray diffraction (XRD) were used in this study to investigate the stabilizing effect of fly ash and lime on expansive soils in the Jianghuai undulating plain area. The comparison was drawn between the variation laws of physical parameters, mechanical properties, microstructure, and mineral composition of expansive soil before and after being stabilized. Experimental results suggest that, after 5% lime is added based on fly ash, the plasticity index of the expansive soil decreases by 64.9%, the free swelling ratio is reduced to about 10%, the unloading swelling ratio is reduced to nearly 4%, and the stabilized soil no longer exhibits the expansive property. The unconfined compressive and tensile strengths of the stabilized soil increase first and then decrease with the rising in fly ash content. After the addition of 5% lime, both the unconfined compressive and tensile strengths increase significantly. The optimum modifier mixture ratio is obtained as 10% fly ash + 5% lime. The SEM images reveal that the microstructures of the stabilized expansive soil vary from an irregular flake‐like and flocculent structures to blocky structures, and the soil samples compactness is enhanced. XRD results indicate that quartz is the main component of the stabilized soil. These are the underlying causes of the rise in the strength. The conclusions of this study can be referenced for the engineering design and construction of expansive soil in Jianghuai undulating plain area.

Adsorption Efficiency and Isotherms of COD and Color Using Limestone and Zeolite Adsorbents

Leachate is a liquid generated due to rainwater percolation through the wastes in a landfill or dumping site that may contain high levels of organic matter including both biodegradable and non-biodegradable which major source of water pollution. In this research work, landfill leachate has been characterized and found to contain very high COD and color. Adsorption process was performed to find out the performance of different combinations ratio between limestone (LS) and zeolite (ZEO). The removal efficiencies of different ratios were examined for reduction of COD and color. The optimum mixture ratio of adsorbents (LS:ZEO) at 10:30 and 15:25 were found to be more effective in reducing COD and color respectively as compared with the use of individual media. The highest removal percentage were found at approximately 55% of COD and 76% of color with 120 minutes of contact time, 200 rpm in shaking speed at pH7. The Langmuir adsorption isotherm model exhibited a better fit with high correlation R2=0.9991 for COD and R2=0.9827 for (color) respectively, which implies that the adsorption of leachate in this study onto LS-ZEO is homogeneous with monolayer. It was observed that limestone and zeolite mixture provides an alternative medium for removing COD and color at a considerably lower cost.

The effects of composition ratios and pressure drops of R245fa/R236fa mixtures on the performance of an organic Rankine cycle system for waste heat recovery

The aim of this study is to investigate the effects of composition ratios of working fluids and pressure drops in heat exchangers on the performance of an organic Rankine cycle (ORC) system employing R245fa/R236fa for waste heat recovery (WHR). Thermodynamic analysis, heat transfer calculation, and the cost-evaluation of apparatus and maintenance of the ORC system are applied to assess the levelized energy cost for the economic performance. Moreover, exergoeconomic factors of the components in the ORC system are calculated. The results indicate that the ORC system cycled with R245fa/R236fa mixture has higher thermodynamic and economic performances than ORC system with either pure-component of R236fa or pure-component of R245fa. At optimal mixture ratio, R245fa/R236fa has higher net power output than R245fa by 7.07% and lower levelized energy cost than R236fa by 3.07%. Both the saturated temperature of liquid working fluid and the proportion of R236fa in R245fa/R236fa mixture increase as pressure drops in the heat exchangers of the ORC system increase. As pressure drop ratio equals to 0.16, R245fa/R236fa with optimal composition ratio is thermodynamically superior to R236fa and R245fa by 2.16% and 9.07%, respectively. Similarly, at the optimal composition ratio, R245fa/R236fa mixture also performs better than R236fa by 2.37% or R245fa by 1.5% in economic analysis. As for exergoeconomic factors, relatively high values for the pump and expander and moderate values for the heat exchanger devices are obtained in the system. On the whole, the values of exergoeconomic factor increase with composition ratio of R245fa/R236fa mixture. Compared with R245fa and R245fa/R236fa mixtures, R236fa has the highest value of exergoeconomic factor for each component of the ORC system. Finally, the correlations of the optimal thermodynamic and economic performances of the ORC system with R245fa/R236fa are proposed for WHR.