Increase In Output Power Research Articles

Power generation gas turbine performance enhancement in hot ambient temperature conditions through axial compressor design optimization

The output power and efficiency of gas turbines are profoundly influenced by ambient temperatures, with higher temperatures resulting in a notable decline in power output. This issue becomes particularly critical during periods of heightened power demand in hot climates. There are two common ways to solve this problem: incorporating auxiliary systems, such as inlet air cooling, or undertaking a comprehensive redesign of the gas turbine core engine. However, these methods sometimes are costly and unfeasible, particularly in regions characterized by arid conditions or constrained budgets for engine modifications. An alternative strategy has been developed to optimize axial compressor performance in order to improve gas turbine power in high-temperature environments, through an innovative approach. This approach centers on the concept of “re-staggering” the stator blades as a retrofit upgrade for existing gas turbines, enabling an increase in compressor inlet mass flow rate while maintaining peak efficiency at 45 °C. An in-house optimization tool was developed, incorporating a genetic algorithm and artificial neural network, to ascertain the optimal configuration of the re-stagger angles. This optimization process was initially coupled with a mean-line solver and subsequently refined using a through-flow model to enhance the preliminary design. The refined compressor design was then subjected to a comprehensive 3D Computational Fluid Dynamics analysis. Additionally, “end-bend” and “elliptical leading edge” techniques were employed to sustain compressor efficiency and ensure stability across various design and off-design operating conditions. Following a thorough structural analysis, the newly designed compressors were manufactured and tested at two distinct sites in Iran (Yazd and Bampur). The measured data demonstrated the commendable performance and stability of the redesigned compressors, aligning closely with numerical predictions. Notably, the results showcased a substantial increase in gas turbine power output ranging from 7.0% to 8.0% at hot ambient conditions, all while preserving efficiency and stability. Encouragingly, the upgraded compressor also exhibited superior performance even at lower temperatures, such as 15 °C. Consequently, this uprating concept presents a practical and cost-effective solution for power plant operators seeking a significant boost in power output, especially during hot weather conditions or in arid regions prone to drought.

Energy, exergy, and economic analyses on coal-fired power plants integrated with the power-to-heat thermal energy storage system

To accommodate high penetration of intermittent renewable power, including wind power and photovoltaic power, coal-fired power plants (CFPPs) are forced to enhance operational flexibility. The integration of a power-to-heat thermal energy storage (TES) system within a CFPP is a potential solution. In this study, the power-to-heat TES system was integrated within a CFPP, and the stored heat is released to heat live steam (scheme C1), reheat steam (scheme C), and high-pressure heater feedwater (scheme C3). The thermodynamic and economic performances of power-to-heat TES systems are evaluated and compared. Results show that the power-to-heat process can achieve zero output of CFPPs, but it has an exergy loss coefficient of more than 40%. When the boiler maintains a 75% rated thermal load, schemes C1, C2, and C3 can maximally increase output power by 150.0, 96.5, and 50.0 MW, accounting for 25.0%, 16.1%, and 8.3% of the rated load, respectively. Scheme C2 achieves the highest equivalent round-trip efficiency of 50.81%, which is slightly higher than that of scheme C1 (50.74%). Scheme C1 exhibits the lowest total cost of the equipment and storage materials at 63.68 million USD, and its net present value and payback period are 25.0 million USD and 13.5 years, respectively.

Numerical study on the performance of a novel three-dimensional stepped wavy flow field in PEMFC

The design of the flow field plate plays a crucial role in the performance of proton exchange membrane fuel cell (PEMFC). In this study, a novel three-dimensional stepped wavy flow field (SWFF) is developed to enhance the output performance of PEMFC. The effects of geometric parameters of this novel flow field, included the total stepped length (S) and depth (H), the ratio of the sub-stepped length (s1:s2 and s1:s3), and the ratio of the sub-stepped depth (h1:h2), on the transport and distribution characteristics of oxygen and water in PEMFC are numerically investigated. The results demonstrated that the smaller stepped total length and larger stepped total depth result in better cell performance. In addition, the output performance of PEMFC increases with the rise of the ratio of s1:s2, and the decrease of the ratio of s1:s3 under the optimal total stepped length and depth. It is also worth noting that the output performance of PEMFC first increases and then decreases with the rise of the ratio of h1:h2. The optimal values for S, H, s1, s2, s3, h1 and h2 are 8 mm, 0.8 mm, 1.6 mm, 1.6 mm, 1.6 mm, 0.4 mm and 0.4 mm, respectively. Furthermore, when compared to the rectangular baffle flow field, wavy flow field, and parallel flow field, the 3D stepped wavy flow field demonstrated a significant increase in the maximum net output power with improvements of 4.8 %, 11.3 %, and 27.9 %, respectively.

Body mass and V'O2 at rest affect gross efficiency during moderate-intensity cycling in untrained young healthy men: correlations with V'O2MAX.

Seventeen young healthy physically active males (age 23 ±3 years; body mass (BM) 72.5 ±7.9 kg; height 178 ±4 cm, (mean ±SD)), not specifically trained in cycling, participated in this study. The subjects performed two cycling incremental tests at the pedalling rate of 60 rev x min-1. The first test, with the power output (PO) increases of 30 W every 3 min, was to determine the maximal oxygen uptake (V'O2max) and the power output (PO) at V'O2max, while the second test (series of 6 minutes bouts of increasing intensity) was to determine energy expenditure (EE (V'O2)), gross efficiency (GE (V'O2/PO)) and delta efficiency (DE(ΔV'O2/DPO)) during sub-lactate threshold (LT) PO. V'O2max was 3.79 ±0.40 L x min-1 and the PO at V'O2max was 288 ±27 W. In order to calculate GE and DE the V'O2 was expressed in W, by standard calculations. GE measured at 30 W, 60 W, 90 W and 120 W was 11.6 ±1.4%, 17.0 ±1.4%, 19.6 ±1.2% and 21.4 ±1.1%, respectively. DE was 29.8 ±1.9%. The subjects' BM (range 59-87 kg) was positively correlated with V'O2 at rest (p<0.01) and with the intercept of the linear V'O2 vs. PO relationship (p<0.01), whereas no correlation was found between BM and the slope of V'O2 vs. PO. No correlation was found between BM and DE, whereas GE was negatively correlated with BM (p<0.01). GE was also negatively correlated with V'O2max and the PO at V'O2max (p<0.01). We conclude that: V'O2 at rest affects GE during moderate-intensity cycling and GE negatively corelates with V'O2max and the PO at V'O2max in young healthy men.

Building integrated concentrating photovoltaic window coupling luminescent solar concentrator and thermotropic material

Building integrated concentrating photovoltaic window (BICPVW) has been proven to be used in sustainable building transparent envelopes. Unfortunately, the balance between optical and electrical properties is difficult. This paper proposes a building integrated concentrating photovoltaic window coupling luminescent solar concentrator and thermotropic material (LT-BICPVW). The luminescent solar concentrator and thermotropic layer were fabricated by bulk polymerization and glass sandwich structure, respectively. Optical models are built based on the optical properties of optical waveguide and thermotropic layer, and optical simulations are performed with Monte Carlo ray tracing technology. Window prototypes are characterized under controlled indoor experimental conditions. The experiment found that as the temperature of the thermotropic film increased from 30 °C to 42 °C, the solar transmittance of LT-BICPVW decreased by 43.3%, and the maximum output power increased by 25%. Compared with, building integrated concentrating photovoltaic window coupled with thermotropic material (T-BICPVW), the power conversion efficiency was improved by 59% at the termination temperature. The LT-BICPVW system can effectively reduce solar heat gain and avoid glare hazards, while using renewable energy to significantly increase power output. A series of predictions are made using validated optical model and tracking technique to better guide the design of PV windows in actual buildings.

Development of Cu2Se/Ag2(S,Se)-Based Monolithic Thermoelectric Generators for Low-Grade Waste Heat Energy Harvesting.

With the ongoing climate and energy crises, thermoelectric conversion has slowly emerged as a clean and reliable alternative energy source for small Internet of Things (IoT) devices. Commercially available thermoelectric generators (TEGs) are typically composed of expensive and toxic Bi2Te3-based thermoelectric materials and require complicated and energy-intensive device assembly processes. As an alternative solution, we have developed a Ag- and Cu-chalcogenide-based monolithic TEG using simple, quick, and low-energy-cost device fabrication processes for low-grade waste heat recovery for energy harvesting. We used ductile Ag2S0.55Se0.45 and overstoichiometric Cu2.075Se, both possessing excellent transport properties around room temperature, with a zT value of ∼0.5 at 300 K. By optimizing the device fabrication process, we were successfully able to assemble the monolithic TEGs without any significant Ag- or Cu-ion migration and obtained a dense and robust device. Strategic optimization of the device structure was able to reduce the electrical contact resistance of the device, which resulted in increased power output. A maximum power density of 0.68 mW/cm2 at a ΔT = 30 K was obtained, which is comparable to a similar Bi2Te3-based monolithic TEG. These results show the potential of chalcogenide-based monolithic TEG as a simple and low-cost alternative to Bi2Te3-based TEGs for energy harvesting applications.

Maximum power enhancement in solar PV modules through modified TCT interconnection method

This article presents a narrativemove towards for maximal power augmentation in poly-crystalline solar photovoltaic (PV) modules through the modified Total Cross Tied (TCT) interlinkconnection method. Worldwide, the cost of coal has increased after a pandemic rebound in industrial activity and it leads to demand for electricity. The maximum power extraction from sustainable energy sources plays a vital role as they are ample, eco-friendly, harmless, and won’t run out. Due to shading effects like the transition of clouds and tree shadows, the output power generated from the solar photovoltaic array is reduced uptill 60%. Several methodologies of array formation and reconfiguration strategies were developed to overcome the partial shading effects. In this proposed method, PV cells in modules are tied via modified TCT fashion with a bypass diode through each row. Real-time experimental analysis is performed with 4 × 4 cell connections. The current (I)-(V)voltage and Power(P)-(V) voltage characteristics are obtained under normal and various partial shading conditions. According to our proposed method, the percentage power enhancement achieved by row-wise partial shading increases from 10% to 60%, approximately 83.64, 82%,80%, 74.29%, 70%, and 64%. According to the conventional topology, the maximum fill factor is 0.28 in columnwise 25% shading ratio, whereas the proposed modified TCT PV array has a fill factor of 0.53, 89% higher. Compared to the proposed pattern, which has a maximum performance ratio of 0.86 for 10% shading condition. The modified TCT interconnected PV module connection extracts a maximum of 50% increased output power when compared to conventional PV modules. The performance of the projected modules is also examined in a one kW PV array.

Review of Development and Application of Main Micro-hydraulic Components and Key Technologies

Abstract: Micro-hydraulic components and key technologies are important directions of fluid transmission and control, which are widely used in the national defense industry, production line conveying equipment, exoskeleton robot, and more. The current development status of miniature hydraulic components and key technologies is summarized, and the existing advantages of hydraulic components and technology are pointed out, and the research object is focused on relevant papers and patents. We study the beneficial effects of the existing microcomponents and technologies, the performance indexes of typical products, and the latest progress in their structure innovation, material replacement, testing methods, and processing technology are summarized. Typical achievements, core components, and manufacturing aspects are studied in-depth. They become smaller with increased output power and find more diverse scenarios with advancing technology maturity. By improving the hardware structure of the existing miniature hydraulic component, and constantly innovating the processing technology, miniature hydraulic components will improve their efficiency and power density and will focus on further miniaturization in the future.

Uniform and scalable Sm3+ and Nd3+ doped ceria nanocatalysts decorating bifunctional oxygen electrodes for high performing reversible solid oxide electrochemical cells

Surface modification with nanoparticles has been widely studied to promote catalytic activity and stability of the oxygen electrode in solid oxide electrochemical cells (SOCs). However, attaining uniformity and scalability of the nanoparticles remains a challenging endeavor. Herein, we developed a highly conductive nano-sized Sm3+ and Nd3+ double-doped ceria decorated La0.6Sr0.4Co0.2Fe0.8O3-δ -Gd0.1Ce0.9O2- δ (SNDC@LSCF-GDC) oxygen electrode via an ultrasonic spray infiltration technique. The uniform SNDC infiltrates promote oxygen catalytic activity by increasing oxygen vacancies and reaction sites on the surface of the electrode. The SOC with the SNDC@LSCF-GDC oxygen electrode shows high performance in fuel cell (1.97 W/cm2 at 750 °C) and electrolysis cell (1.72 A/cm2 at 750 °C) modes. Moreover, ultrasonic infiltration-based SNDC nanoparticles were successfully demonstrated in a large-size commercial cell (10 cm × 10 cm effective area), showing increased power output and remarkable stability for 960 h. This work presents a scalable and feasible way to decorate large area electrodes with uniform infiltrates for energy storage and conversion applications.

PVP/PEG polymer blend based electrolytes for quasi-solid-state dye-sensitized solar cells operating at low temperature

We investigated the performance of quasi-solid-state dye-sensitized solar cells (qs-DSSCs) employing Polyvinylpyrrolidone/Polyethylene glycol (PVP/PEG) blends over a wide temperature range. The photovoltaic performance of qs-DSSCs with conventional polymer electrolytes is very poor at low temperatures, mostly because of the significantly reduced ionic conductivity of the electrolyte. The PVP/PEG blend with a composition ratio of 20/80 exhibited low glass-transition temperature and high ionic conductivity, resulting in a power conversion efficiency (PCE) of 2.91% at a low temperature (−133 °C). This is 2.67 times higher than that of the device PCE (1.09%), with the most efficient and conventional gel-type polymer electrolyte. At ambient temperature, the qs-DSSC with PVP/PEG realized a device PCE of 6.13%, which is comparable to that of cells with conventional liquid electrolyte employing 3-methoxypropionitrile (6.36%) or a polymer electrolyte based on poly (vinylidene fluoride-co-hexafluoropropylene) (6.05%). In addition, the qs-DSSC with PVP/PEG exhibited excellent long-term stability during aging test, retaining approximately 88% of its initial PCE after 1000 h of light irradiation. The electrolyte developed in this study is not constrained by temperature factors and can be applied to solar cells that are viable for practical outdoor use (polar regions and space) with increased power output.

Improved Efficiency Droop of 370 nm UV LEDs with ITO/Au/ITO Structure

In this paper, a method of indium-tin oxide/Au/indium-tin oxide (IAI) structure as transparent conductive layers (TCLs) to improve the current spreading and suppress efficiency droop of ultraviolet light-emitting diodes (UV-LEDs) is investigated. The morphology and distribution of Au clusters formed by annealing are investigate by atomic force microscope and scanning electron microscope. Compared with the UV-LED without Au clusters, the forward voltage of UV-LED is reduced by 5.9% at 20 mA, light output power and wall plug efficiency increase by 64.2% and 84.2% at 300 mA for the UV-LED with IAI structure as the thickness of the Au interlayer is 1 nm. In addition, light emission distribution results show that by inserting Au interlayer, current distributes more uniform and the current spreading characteristics of UV-LED are improved. Ultimately, efficiency droop of the LED has been suppressed.

Simulation study and performance analysis of free piston linear generator (FPLG) used for ORC system

Due to advantage of low friction loss, simple structure and good sealing, free piston linear generator (FPLG) presents great application potential in ORC system. In this study, the FPLG simulation model was built using GT Suite and MATLAB/Simulink, and the model accuracy was verified through comparison with experimental data and error analysis. The influence of FPLG operation parameters, model parameters and full consideration of friction and EV characteristics on FPLG performance were studied. All the relative errors are within 10%, namely, the FPLG model has high reliability. Each indicator varies significantly with intake pressure, but relatively weakly with intake temperature. There is an optimal external load for maximum power output, and an optimal pipeline diameter for maximum velocity and average power output. As friction coefficient increases, both velocity and power output increase first and then decrease. When friction coefficient is 1200 N-s/m, average power output and velocity reach the maximum value of 102 W and 0.83 m/s, respectively. The velocity gradually decreases with the increasing flux linkage, while electromagnetic force and power output show a increasing trend. The research results can provide reference significance for optimization of FPLG and provide guidance for the application in ORC system.

An adaptive yaw method of horizontal-axis tidal stream turbines for bidirectional energy capture

Tracking the flow direction is one of the effective ways to harvest more energy for a horizontal-axis tidal stream turbine (HATST). This paper presents a novel HATST design that incorporates a yaw method with a tail wing, inspired by horizontal-axis wind turbines. The design enables the HATST to adaptively yaw toward the bidirectional flow with a reciprocating rotation. To ensure stability, a small yaw angle was reserved and permanent magnets were employed to hold the yaw mechanism steady. The kinetic equations of the yaw mechanism were established, and the influence of the yaw shaft's position and the tail wing's mass on the yaw performance was analyzed. A test model was constructed to validate the design and analysis, and the optimum parameters were discussed. Experimental results demonstrated that the HATST yawed well toward the inflow and maintained the designed yaw angle of approximately 5° at different velocities. Compared with the device without magnetic-assisted yaw, the HATST achieves more than 4.47% increase in output power in the velocity range of 0.15 m/s to 0.31 m/s, and exhibits minimal swing amplitude. This research provides a novel and practical solution for the effective utilization of bidirectional tidal steam energy.

Coupled responses of the flow-induced vibration and flow-induced rotation of a rigid cylinder-plate body

In this study, coupled responses of flow-induced vibration and rotation for an elastically mounted cylinder-plate body are numerically investigated at a low Reynolds number of 120. A wide vibrational reduced velocity range of Uy = 3–18 under four rotational reduced velocities Uθ = 5, 8, 12, and 18 are considered. The non-bifurcation responses, bifurcation only in rotation responses, and bifurcation in both vibration and rotation responses are identified. Typical vortex-induced vibration (VIV) responses are recognized when considering the passive rotations, different from the full interactions between VIV and galloping for the vibration-only case. As Uθ increases, the peak vibration amplitudes increase, the onset Uy of the lock-in region becomes larger, and the lock-in region is wider. The phase angles of displacements versus lift coefficients experience a jump from 0° to 180° in the lock-in region, and the larger the Uθ, the wider the Uy range of phase jump. Whether the instantaneous posture of the cylinder-plate body is streamlined or not is determined by oscillation amplitudes and phase differences between displacements versus rotation angles. Streamlined profiles can be achieved under small oscillation amplitudes or when the phase angles are nearly 90°. The 2S (two isolated vortices) vortex shedding mode dominates the initial and desynchronization branch, while the 2P (two pairs of vortices), 2S* (two isolated vortices with tendency to split), and 2T (two triplets of vortices) modes appear in the lock-in region. After the symmetry-breaking bifurcation, the reattachment behavior becomes simpler and the length of the recirculation region is significantly increased, as compared with those in non-bifurcation region. With the above study, a new method of improving energy harvesting from flow-induced vibration, by incorporating passive rotations simultaneously, is first introduced. It is found that passive rotations can enhance the vibration responses and thus lead to the increased output power and energy transfer ratio, although they make less contributions to the total power. Generally, this mechanical system presents a promising opportunity for energy harvesting through flow-induced vibration.

Recovering breeze energy based on galloping enhancement mechanism for smart agriculture

Smart agriculture contributes to a sustainable society. Aiming to provide a self-powered solution for widely distributed sensor nodes in smart agriculture, this work proposes a piezoelectric galloping energy recovery system to recover multi-directional breeze energy in the environment. A galloping enhancement mechanism consisting of an optimal curved-sheet bluff body with a magnet-based bi-stable mechanism is constructed to enhance the energy output from the breeze. Breeze energy recovery is realized by a piezoelectric energy harvester utilizing galloping vibration. Aerodynamic simulations were performed to determine the optimal wide-arc ratio for the curved-sheet bluff body. The magnet-based bi-stable mechanism of three different configuration modes was analyzed and compared. The results of wind tunnel experiments show that the proposed energy recovery system can enhance output power compared to the traditional linear configuration under a breeze. The maximum output power and power growth are 2.81 mW and 49.5 % at 5 m/s wind speed, and a maximum output power increase of 673.3 % was achieved at 3.5 m/s wind speed. The feasibility of powering a low-power agricultural sensor was evaluated in an outdoor experiment. The energy recovery system will effectively manage multi-directional breeze energy recovery, achieving self-powered applications in smart agriculture.

Optimalisasi Kinerja Archimedes Screw Menggunakan Sistem Transmisi Terhadap Output Daya (Watt)

Water energy sources at low head and discharge can be utilized as a generator of electrical energy, one of which is by using the Archimedes screw turbine, the Screw turbine is used in Pico Hydro Power Plants (PLPTH) as a small-scale power plant by utilizing water energy from river flow. The purpose of this research is to optimize the performance of the Archimedes screw turbine Pico Hydro Power Plant so as to produce a better power output. In this study the authors designed an Archimedes screw turbine model with a screw angle of 28°, 5 blade type screw, and 40° turbine tilt. This study focuses on a transmission system using a belt and pulley ratio of 1:3, with two levels of transmission, and a turbine tilt angle of 40°. The method used in this study is the experimental method. As a result, after trials were carried out on a stream located in the Sungailiat Archipelago Fishing Port area, the highest turbine rotation value was 146 rpm and generator rotation 756 rpm, resulting in a power output of 8 watts within 45 minutes of the trial period in the field. This means that after modifying the Archimedes screw turbine with the transmission system and the turbine tilt angle of 40°, the resulting power output increases.

Cryogenic slab RF discharge CO laser with hybrid waveguide-unstable resonators

Dependences of a cryogenic slab radio-frequency discharge CO laser output power on a distance between mirrors of a hybrid negative-branch waveguide-unstable resonator were experimentally studied. The maximum output power was observed at the resonator length longer than the one calculated by taking into account the mirrors radii of curvature. Optimization of the resonator length made it possible to get the output power increase up to 20%–25%. The results obtained can be used for designing not only slab laser systems with hybrid waveguide-unstable resonators, but also for high-power lasers with full-sized negative-branch unstable ones.

Comparison of operational parameters and stability of performance of an automotive SI engine powered by methyl and ethyl alcohols

The article presents research results performed using automotive spark ignition engine run on methyl and ethyl alcohols as well as gasoline as reference fuel. The research was performed on automotive engine of Fiat 1100 MPI type. The subject of the performed analysis was to compare operational parameters of the engine such as: engine power output, overall efficiency, emission of toxic components of exhaust gases, as well as comparison of course of combustion process calculated on the basis of recorded and averaged indicator diagrams, and on the basis of individual combustion cycles. The averaged diagrams were used in analysis of the pressure course during combustion, in analysis of pressure growth rate and heat release rate. Diagrams of individual combustion served for assessment of operational smoothness of the engine when fueled with alcohols. As the reference, parameters measured in case of gasoline fueling were used. The experiments have confirmed stable engine operation on methyl and ethyl alcohols. Increase of engine power output with o 3.8-7.7% was confirmed for methanol and with 1.7-3.3% for ethanol, while increase of the efficiency with 1.5-7.5% was confirmed for methanol and with 1.2-2.5% for ethanol, comparing with gasoline fueling. Obtained results are pointing at possibilities of fueling of modern SI engines with alcohols only, especially including water-logged ethyl alcohol, obtained directly from distillery. This should increase share of alcohols in overall balance of consumed engine fuels.

Pressure energy recovery of LNG integrated with multi-stage feedwater fuel preheaters in a combined cycle power plant

Liquefied natural gas and combined cycle power plants have emerged as solutions to the intermittency of renewable energy sources, but they require innovative approaches for efficiency improvement. This study proposes a novel pressure recovery system, integrated with multi-stage feedwater fuel preheaters, to improve the efficiency of combined cycle power plants connected to natural gas supply stations. The research demonstrates that preheating the fuel to 350 °C reduces fuel consumption by 2.06% while maintaining the gas turbine inlet temperature. Additionally, heating the fuel gas to 210 °C using feedwater, then expanding it to 30 bar in the turbine, leads to a 193% increase in pressure recovery net power output compared to using seawater alone. By combining these two effects, the proposed system improves the overall efficiency of the combined cycle power plant by 1.08%p compared to the basic system without fuel preheating and pressure recovery. Furthermore, implementing pressure recovery and fuel preheating concurrently, rather than sequentially, increases the efficiency by an additional 0.163%p. These findings highlight the potential for this innovative system to maximize the efficiency of combined cycle power plants, and pave the way for further exploration of new approaches to enhance the performance of liquefied natural gas power plants.

Performance Evaluation of Aquaponics-Waste-Based Biochar as a Cathode Catalyst in Sediment Microbial Fuel Cells for Integrated Multitrophic Aquaculture Systems

The sustainable development of aquaculture faces a significant challenge due to the need for the frequent treatment of aquacultural waste. This research presents a pioneering solution by concurrently utilizing aquacultural waste to produce biochar and enhancing a sediment microbial fuel cell (SMFC)’s treatment efficacy for waste generated from the integrated multitrophic aquaculture (IMTA) system. The water quality parameters of the aquacultural pond water were analyzed, and synthetic wastewater was prepared to validate the system’s efficiency. Over a period of more than 50 days, the SMFC was operated and monitored, yielding an average chemical oxygen demand (COD) removal efficiency of 86.31 ± 2.18%. The maximum operating voltage of the SMFC reached 0.422 V on the 21st day of operation when connected to an external resistance of 975 Ω. A novel-activated aquacultural biochar catalyst was synthesized from aquaponics waste and used as a cathode catalyst, substantially improving the SMFC’s performance. Characterization studies demonstrated that the aquacultural biochar catalyst was an active electrocatalyst, accelerating the oxygen reduction reaction rate and leading to increased power output and overall efficiency of the SMFC. The SMFC utilizing the aquacultural-waste-based biochar cathode catalyst showcased the highest maximum power density, with a range of 101.63 mW/m2 (1693.83 mW/m3), and the lowest internal resistance, indicating superior performance. These results validate the reliability of implementing SMFCs in actual aquaculture systems. A novel modular design for SMFC reactor-assisted small-scale integrated poultry–fish culture systems is proposed for further practical application in real-life aquaculture settings. This research contributes to finding sustainable and effective methods for waste treatment for aquaculture, promoting the development of environmentally friendly practices in the industry.