Air Mass Flow Research Articles

Optimization of a salt gradient solar pond for air heating application

In this study, it is demonstrated that when a solar pond is used for an air heating application like crop drying, domestic space heating, greenhouse heating etc., it is important to account for pumping power in the calculations. When air is the working fluid, the magnitudes of extraction and pumping power are comparable. Therefore, a new parameter is defined in context of solar ponds used for air heating, namely, effective power (defined as power extracted minus pumping power). At first, using a steady-state analysis, a closed form solution is derived for extraction power. The pertinent expression for pumping power is taken from the literature. Thus, an analytical expression for effective power is obtained and thereafter, an optimization analysis has been carried with the objective of maximizing this effective power. The analysis is used to calculate optimum values of air mass flow rate and pond’s non-convective zone thickness at which maximum effective power is registered. The corresponding maximum effective power and the associated air outlet temperature are also calculated. This work thus is believed to prove useful for designing of solar ponds that are used for air heating applications in a manner to ensure maximal system performance.

Large Eddy Simulation of compositional indirect noises generated in a non-isentropic nozzle

The present work describes the results of a numerical study of the noise generation by compositional perturbations in a non- isentropic nozzle. An in-house compressible LES code, Boundary Fitted Flow Integrator-LESc, is utilized to simulate the noise generation in the system. The compositional inhomogeneities are generated by a cross-flow pulse injection. Different operating conditions are investigated, including different injection gases and air mass flow rates. The results revealed that the processes of direct and indirect noise generation are successfully reproduced in the LES, with the noise magnitudes in good agreement with those in the measurements. Injection of gases with smaller (He) and larger (CO2) molar masses compared to air is found to generate negative and positive indirect noises, respectively, in the LES, which is consistent with the experimental findings. The effect of different air mass flow rates is also investigated and discussed, and the direct noise and indirect noise amplitudes are both found to be closely related to the air mass flow rate. The indirect noise amplitude and upstream pressure are found to be closely related to the losses in the system, which are higher in the simulation when the Mach number in the nozzle approaches unity and shocks may exist. Under these circumstances, the accuracy of the numerical method is uncertain and requires further investigation.

Effect of operating conditions and air filters maintenance on the performance and efficiency of gas turbine power plant

The purpose of this study was to evaluate the thermal performance of a gas turbine unit under real weather conditions by applying the first law of thermodynamics and studying the effect of the cleanliness of the air filters. The unit operated with a design power of 265 MW under standard conditions (15 °C, 1 bar pressure, and 60 % relative humidity). The current study also included analyzing the power unit using the MATLAB simulation program to know the effect of external factors (temperature, relative humidity, and compression ratio) for a whole year (2019) on the performance of the turbine unit. The results showed that the highest efficiency was obtained during the month of November (34 %) at a temperature of 19 °C and the lowest efficiency was achieved in August (23 %) at the highest recorded temperature of 46 °C. The results also showed that when filters were replaced in November, the efficiency and air mass flow rate increased by 21 % and 40 %, respectively.

Performance analysis of single‐pass solar air heater thermal collector with adding porous media and finned plate

AbstractThe recent study encompasses a practical inspect on adding porous material above absorber flat plate having fins to improve the effectiveness of solar air heater (SAH) collector along with forced air circulation process. The efficiency of the altered model and conventional SAH system is compared at the same time to display the impacts of adding porous material. The model that used porous material is called Model‐2, whereas the conventional SAH is called Model‐1. The measuring data is collected in January 2021 in Iraq (Mosul city). Outcomes emphasize that the effectiveness of altered model is better than traditional model by 7% for all air mass flow rates values. The highest efficiency is obtained equal 67% for Model‐2 and 60% for Model‐1 for mass flow rate 0.02 kg/s. For all mass flow rate values, a substantially change in temperature is observed in altered system as compared to traditional system, where the exhaust temperature of Model‐2 is higher than Model‐1. The improvement in the effectiveness of Model‐2 demonstrates that the employ of porous material has an extreme action on the heat exchange and subsequently heat transfer rate.

Indoor Performance Analysis of a Novel Double-Pass photovoltaic/thermal (PV/T) Asymmetric Compound Parabolic Concentrator (ACPC) Solar Collector

A photovoltaic/thermal (PV/T) solar collector combines solar photovoltaic (PV) modules and solar thermal that operates simultaneously to generate electricity and thermal energy. Design parameters, operating conditions and environmental factors all have a significant impact on the performance of a PV/T solar collector. This research investigates the influence of the variation in the air mass flow rate to the performance of a novel double-pass photovoltaic/thermal (PV/T) asymmetric compound parabolic concentrator (PV/T-ACPC) solar collector. To investigate performance of the solar collector, it was tested indoors using a solar simulator at average solar radiation of 800 W/m2 with the variation in the air mass flow rate ranging from 0.0074 kg/s to 0.0900 kg/s. From the analysis, we found that as the air mass flow rate increases, the thermal efficiency and electrical efficiency increases from 37.15 % to 60.51 %, and 2.51 % to 3.29 % respectively. Meanwhile while the difference in the air output temperature and PV panel temperature were found to decrease from 19.64 °C to 2.63 °C, and 66.83 °C to 41.86 °C respectively. We also found that, as the mass flow rate continues to increase, it will reach its ‘optimum point’ and approaching a plateau at mass flow rate of 0.0262 kg/s. The finding is crucial since the collector needs to be operated at its optimum flow rate to ensure optimum efficiencies at the optimum temperature rise of the useful air supply.

Air curtain as a SARS-CoV-2 spreading mitigation method in a small aircraft cabin

This paper discusses an application of air curtain for reduction of virus-laden droplets transmission from an infected host to other passengers in a small aircraft cabin. The study is restricted to respiratory droplets emitted during coughing. Discrete Particle Method introduced for violent respiratory events (VRE) captured in detail the movement of coughing puff inside the cabin and allowed to study the interaction of droplets with the air curtain’s stream and the surrounding air. The results show that the application of the air curtain inhibits the transmission process of small droplets (diameters ranging from 10 to 40 μm). The air curtain supplied with a limited air mass flow cannot alter the multiphase puff dynamics, but it can be utilized to deflect the virus droplets with lower momentum away from the neighboring passenger. Improved removal efficiency of virus-laden droplets has been achieved owing to the application of the air curtain together with supplementary suction surfaces introduced on the front seat backrest. The virus (SARS-CoV-2) transmission process was also analyzed by means of mass concentration of CO2 exhaled by the infected host, used as a contamination tracker. This part of the work aims at assessment of an applicability of CO2 tracer gas in analysis of virus transmission. Results show that CO2 tracer gas can only be employed for the study of small size droplets dispersion (diameter less or equal to 40 μm).

Numerical and experimental study on the performance of a hybrid draft biomass cookstove

Over 2 billion people worldwide rely on biomass for cooking and primarily use traditional cookstoves, causing 4 million casualties annually due to indoor air pollution. This can be minimised by improving the design and combustion characteristics of the stoves. The present study is an attempt to achieve these improvements by investigating numerically (3D) and experimentally the thermal and emission performance of a newly developed hybrid draft biomass cookstove (HDBC). The influence of secondary air mass flow rate on stove performance is analysed. A homogeneous combustion is modelled to evaluate thermal performance, and soot formation is studied using three soot models: one-step, two-step, and mass-brook. The numerical results are validated against Water Boiling Test (WBT) data. The HDBC achieved Tier 3 level in efficiency and Tier 4 level in CO and PM2.5 emission performance, both experimentally and numerically, thus outperforming standard natural draft stoves. The numerical results exhibited fair agreement with the experimental data, with an average deviation of 6%, 9%, and 26% for efficiency, CO, and PM2.5 emissions, respectively, compared to the experimental results. The soot generation predicted by a one-step soot model gives better results over the other two models and is in good agreement with the experimental results.

Seasonal variability in size-resolved hygroscopicity of sub-micron aerosols over the Western Ghats, India: Closure and parameterization

Hygroscopicity of atmospheric aerosol primarily depends on the size and chemical composition of the particle and is important for estimating anthropogenic aerosol radiative forcing. There is limited information exists over the Indian region on size segregated aerosol hygroscopicity (κ) in different seasons. This study presents ‘κ’ as derived from a Humidified Tandem Differential Mobility Analyzer (HTDMA) over a High Altitude Cloud Physics Laboratory (HACPL) in the Western Ghats, India for more than a year (from May 2019 to May 2020). The average hygroscopicity values of aerosol particles of diameters 32, 50, 75, 110, 150, 210 and 260 nm at 90 % RH condition are 0.19, 0.18, 0.16, 0.17, 0.18, 0.20, 0.21 respectively during the entire observation period. κ was observed to decrease with an increase in size in the Aitken mode regime (32–75 nm) and an increase in the accumulation mode (110–260 nm). Seasonal variation of hygroscopicity for a wide range of particle diameters is reported which is highly demanding as there is a change in the air mass flow pattern in each of the seasons. The diurnal cycle of hygroscopicity showed a prominent peak during the midnight to early morning hours followed by a decrease in the forenoon hours and a secondary peak in the afternoon hours. κ is found to be higher in pre-monsoon compared to winter season as Chl is approximately 3 % higher in pre-monsoon and NH4Cl is highly hygroscopic among the assumed chemical composition. Hygroscopicity derived through chemical speciation observations assuming internal and external mixing of aerosols i.e. κinter and κexter are overestimating as compared to κHTDMA. However, the bias between kexter and kHTDMA is relatively lower as external mixing type of aerosol is evident through the growth factor data sets measured by HTDMA. Utilizing the hygroscopicity measurements available for discrete diameters by HTDMA, a parameterization of hygroscopicity with the dry diameter of sub-micron particles is developed.

3E analyses of a cogeneration system based on compressed air energy storage system, solar collector and organic Rankine cycle

Compressed air energy storage associated with renewable energy sources is a reliable method to solve energy shortage and achieve emission reduction. A novel cogeneration system which combines a compressed air storage system, an organic Rankine cycle system and a solar collector system is proposed. Parametric sensitivity analysis, exergy analysis, and economic analysis are performed. The results demonstrate that the proposed hybrid system with the air mass flow of 5400 kg/h has an output power of 389.19 kW and an output heat of 985.18 kW. The power efficiency, energy efficiency and exergy efficiency of the system are 24.63%, 86.96% and 67.57%, respectively. The total exergy destruction of the proposed system is 649.26 kW. The highest energy destruction, 199.43 kW, is provided by the solar collection system. The cost of total investments of the overall system is 6471.35 k$. The solar collector system and the turbine have the highest percentage of investment costs with 30.72% and 27.87% respectively. The economic analysis revealed that the simple and dynamic payback periods of the proposed hybrid system are 17.68 years and 11.56 years, respectively.

Influence of Air Mass Advection on the Amount of Global Solar Radiation Reaching the Earth’s Surface in Poland, Based on the Analysis of Backward Trajectories (1986–2015)

The paper aims to analyse the relationship between the amount of global solar radiation (GSR) reaching the Earth’s surface in Poland and the direction of air mass advection, using 72-h backward trajectories (1986–2015). The study determined average daily sums of GSR related to groups of trajectories with certain similarities in shape. It was found that the average daily sums of GSR during air mass inflow from all the directions (clusters) identified were significantly different from the average daily sum in the multi-year period. A significant increase in the amount of GSR over Poland is accompanied by air mass inflow from the north and east. The frequency of these advection directions is 27% of all days. The western directions of advection prompt different GSR sums: from slightly increased during advection from the north-west, to significantly decreased during advection from the west (from the central and western part of the North Atlantic). Special attention was given to days with extremely large (above the 0.95 percentile) and with the largest (above the 0.99 percentile) GSR sums. These are prompted by two main types of synoptic conditions: the Azores High ridge covering Central and Southern Europe; and the high-pressure areas which appear in Northern and Central Europe.

Cooling and Flow Characteristics of Multi-Channel Wall Jet Structure With Film Holes at Blade Leading Edge

Abstract Efficient cooling is imperative for gas turbine blades that suffer from hot gas erosion. Cooling and flow characteristics of multi-channel wall jet structure combined with film holes for blade leading edge are numerically investigated through the Reynolds-averaged Navier–Stokes method in this paper. Several geometrical schemes with different rows and diameters of film holes were conducted, and the influences of the cooling air mass flow ratio of the first coolant supply cavity were also considered, which presented the detailed flow and cooling characteristics of wall jet and film composite cooling on conjugate heat transfer. The results implied that film extraction improves the overall cooling effectiveness compared with pure wall jet cooling. And the mainstream intrusion happens in some film holes at the bottom of blades, especially on the pressure side. The film-hole diameter can raise the mass flow ratio and enhance external thermal protection produced by cooling air, and it also affects the uniformity of film flow and the temperature gradient of some regions for turbine blades. Furthermore, the cooling performance and pressure loss are significantly influenced by the coolant mass flowrate of the first cooling air supply cavity. This study will offer a consultation for the design of film-hole structures for multi-channel wall jet cooling.

Optimization of the circulating cooling water mass flow in indirect dry cooling system of thermal power unit using artificial neural network based on genetic algorithm

The power consumption of circulating pumps can be effectively reduced by optimizing the circulating cooling water mass flow rate in indirect dry cooling system of a thermal power unit. The coupling algorithm of the artificial neural network optimized by genetic algorithm and the heat transfer model of the condenser and the air-cooled heat exchanger was established to obtain the air mass flow rate into the natural draft dry cooling tower (NDDCT). Assuming that the steam turbine back pressure is constant, the optimal mass flow rate of the circulating cooling water corresponding to the ambient temperature and the ambient temperature range in which the mass flow rate can be adjusted were obtained when the output power load was constant by using the heat transfer model of the condenser and the air-cooled heat exchanger. Calculation results show that the optimal mass flow rate of the circulating cooling water corresponding to ambient temperature gradually increased with the increase in the output power load and the decrease in the minimum inlet temperature of circulating cooling water in the NDDCT. Moreover, the ambient temperature range in which the mass flow rate of the circulating cooling water can be adjusted gradually decreased. Meanwhile, the ambient temperature range gradually decreased with the increase in the minimum outlet temperature of the circulating cooling water in the NDDCT, but the optimal mass flow rate corresponding to the ambient temperature remained unchanged. Taking the operating state of the unit on a certain day as an example, at least 16,515 kWh circulating pump power consumption can be saved by adjusting the circulating cooling water mass flow rate to the optimum value.

Experimental study on icing and anti-icing of a rotating conical spinner

Icing and hot-air anti-icing tests of a rotating conical spinner were carried out in an icing wind tunnel. The surface temperature was measured using a calibrated infrared thermal imager. The icing process and the water film flow on the spinner were recorded by a high-speed camera. In the icing test with temperature of −21.7 °C and LWC (liquid water content) of 0.5 g/m3, white rime ice grows and covers the entire surface. From the cone tip the ice thickness decreases from 5.8 mm to a minimum of 3.2 mm, while in the rear part the ice thickness increases. In the icing test with temperature of −9.4 °C and LWC of 1.0 g/m3, long pine needle-shaped ice forms downstream the cone tip area. The anti-icing surface temperature first increases and then decreases along the spinner generatrix, with a maximum value near the tip. Under nearly identical incoming flow conditions the higher the mass flow of hot air is, the greater the decrease in surface temperature is. For the anti-icing tests with LWC of 0.5 g/m3, from t = 40 s, as the mass flow of the hot air is low the spinner surface is completely covered by water film. There exists a complete evaporation area near the cone tip with a high mass flow. For the anti-icing tests with LWC of 1.0 g/m3, from t = 40 s the spinner surface is completely covered by water film in all test runs.

Experimental investigation and optimization analysis on thermoelectric water generator integrated with heat pipe

• Thermoelectric water generator integrated with heat pipe (HPTEWG) is proposed. • HPTEWG and thermoelectric water generator (TEWG) are compared experimentally. • HPTEWG can achieve higher cooling capacity than TEWG by 34.11W. • Maximum water generation increment in HPTEWG by 38.95ml/h can be achieved. • Structure configurations of HPTEWG are optimized to gain maximum water generation. As scare freshwater resources have been severely stressed by climate change, population growth and water pollution, demands of efficient water generation methods and devices urgently increase. To further improve the water generation capacity of thermoelectric water generator (TEWG), a novel TEWG integrated with heat pipe (HPTEWG) is proposed and studied by using experimental and simulation methods. Rather than the heat sink of the TEWG, the heat pipe is utilized to precool moisture air before the thermoelectric cooler to achieve the goal. Experimental results show that the maximum improvement in cooling capacity and water generation of HPTEWG can be 34.11W and 38.95ml/h when compared with TEWG under given operating condition. Besides, the effects of the input power of TEWG, inlet air temperature, relative humidity and mass flow rate on the performances of two system are experimentally investigated as well. In addition, a validated theoretical optimization model is built to optimize the structure configuration of the HPTEWG. The maximum water generation of the HPTEWG can be achieved when optimal area allocation ratio of HP and TEWG are chosen under constant total area condition. It is hope that the results can provide theoretical basis for the thermoelectric water generator development and application.

Construction of pressure characteristics of a centrifugal radial fan using ANSYS CFX software package

Purpose. Improve the design and pressure characteristics of the centrifugal radial fan (CRF), reduce costs and design time by using modern design methods. Methods. Analytical study of the energy characteristics of the CRF using CFD software packages. Three-dimensional modeling of the flow of air in the flow part of the fan. Results. The paper describes the peculiarities of construction of the pressure characteristic of a centrifugal radial fan using the ANSYS CFX program. Numerical simulation of the flow was carried out to improve the initial indicators at the preliminary stage of the design of the CRF. This approach allows reducing costs and design time compared to the experimental approach and provides an opportunity to improve and analyze the performance of the fan and its design without manufacturing it. The use of a calculation complex of programs for the justification and analysis of the design results provides an opportunity to see the picture of the pressure distribution along the flow part, the field of velocity vectors and the movement of the air flow. By means of numerical modeling of the spatial air flow in the flow part of the fan, choosing the SST-turbulence model, the regularity of the change in the pressure characteristic of the fan was the distribution of velocities and pressures in different elements of the air conditioning system, at different values of the mass flow of air, was determined. An analysis of the change in total and static pressure in the flow part of the CRF was performed: in the stator – an inlet nozzle, in the rotor – a closed type impeller, and in the stator – made in the form of a snail. The question of the dependence of the total and static efficiency on the mass flow rate of the fan is also considered. Conclutions 1. Studies of the process of construction of the pressure characteristic of the CRF showed that the proposed approach allows you to reliably estimate the parameters of the fan’s operating modes, determine the main features of the change in determined. As a result of the calculation, efficiency and the distribution of full and static pressure in the elements of the flow part for its further improvement. 2. A distinctive feature of the proposed method of constructing the pressure characteristic is that in the early stages it is possible to predict the hydrodynamic parameters of the flow part of the designed fan without creating its solid-state model. And based on the results of a numerical study of the spatial air flow, it is possible to quantitatively and qualitatively analyze the elements of the flow part of the fan and specify their geometric dimensions for further calculation based on average parameters. 3. The ANSYS 19.0 CFX software complex allows you to immediately display changes in the design of fan assemblies and obtain the results of a numerical study of the spatial air flow in the flow part of the fan. Using the proposed graphic materials, it is possible to visually observe the processes taking place in the flow part of the CRF. The possibility of numerical calculation of the parameters of interest is also shown. 4. The creation of a real CRF to evaluate its performance requires significant funding and is time- consuming, while the use of CFD is fast and cost- effective. The ANSYS 19.0 CFX software package makes it possible to visually present a picture of the behavior of a wide range of process parameters that occur in the flow part of the fan and to show their relationship with the features of the geometry and dimensions of the fan. Keywords: total pressure, static pressure, nozzle, impeller, volute, CFD, mass flow, total efficiency, static efficiency.

Thermal Performance of Double Pass Solar Air Heater With Tubular Solar Absorber

In this investigation, the effect of replacing the conventional solar absorber with a new solar absorber on the thermal performance of a double-pass solar air heater has been studied experimentally and numerically. Three configurations have been introduced, the first configuration is a double pass solar air heater with a flat plate solar absorber (DPSAHWFP) for the aim of comparison, and the second configuration is a double pass solar air heater with a tubular absorber that includes a set of tubes which are fitted perpendicularly to the direction of airflow (DPSAHWT-1), and the third configuration is double-pass solar air heater with a tubular absorber that involves set of tubes which are fitted in parallel to the direction of airflow (DPSAHWT-2). The experiments have been carried out under indoor conditions at a constant heat flux equal to 1000 W/m2 and different air mass flow rates (0.01– 0.03 kg/s). The results revealed that the air mass flow rate has a substantial impact compared to the rise in air temperature, hence, the thermal performance of solar air heater is directly proportional to increase air mass flow rate. In addition, the experimental and numerical outcomes indicated that for all air flow rates. The (DPSAHWT-2) offers higher thermal performance as compared to other models, where the maximum effective efficiency has been obtained at 0.03 kg/s equal to 80.9 %. Moreover, (DPSAHWT-2) is more efficient than DPSAHWFP and DPSAHWT-1 by 4.2 % and 9.8 % respectively.

PERFORMANCE ANALYSIS OF HEAT EXCHANGER FOR COOLING APPLICATIONS UNDER DRY AND WET CONDITIONS

The present study is carried out to compare evaporator coil's performance for dry and wet conditions. Numerical simulations are performed by solving a set of governing equations for the above-mentioned operating conditions (dry and wet). Two typical fin configurations, named plain and corrugated or wavy fins, for the staggered tube arrangements are studied. The model utilizes the conservation equations of mass, momentum, and energy to the physical domain. Only a two-phase condition for the flow within the evaporator tube is considered. The working fluid considered for cooling in the heat exchanger is R134a. Variation of evaporator coil performance for different operating parameters such as air inlet temperature, air inlet relative humidity, refrigerant inlet temperature, and mass flow rates of refrigerant and air is presented in this study. The analysis is performed by solving the sets of equations in a MATLAB environment. It is worth observing that the value rises when the relative humidity, air mass flow rate, and air inlet temperature increase. The values are increased by about 7% and 12% from the dry working condition to the wet working condition for plain and wavy fin configurations, respectively. With increase in refrigerant mass flow rate and evaporation temperature, the UA value increases but it is not as much significant as air mass flow rate and air inlet temperature. The air-side pressure drop is increased by 30% for a wavy fin as compared to a plain fin.

SPRAY CHARACTERISTICS AND ENERGY ANALYSIS OF N-HEPTANE ATOMIZATION BY HEATED AIR IN A MINI AIR-BLAST ATOMIZER

Liquid fuel atomization plays an important role in fuel combustion of gas turbine engines and internal combustion engines. To reveal the interaction of atomizing air temperature (AAT) and air-liquid mass ratio (ALR) during the air-blast atomization process, <i>n</i>-heptane atomization in an air-blast atomizer is carried out experimentally at AAT = 300 K-450 K and ALR = 0.9-2.9. The spray cone angle (φ) presents a three-stage featured with rising ALR and enters the stable stage of 25°-26°. ALR played a decisive role in droplet size and velocity, while the AAT effect is ancillary and has a notable performance at part of conditions. The AAT effect on droplet size is more obvious at low ALR, while the effect on droplet velocity is strengthened as ALR increases. The same conclusion is also obtained in the analyses of droplets kinetic energy and surface energy. This discovery inspires us to increase AAT to compensate for the atomization performance decrease caused by reducing ALR. It can reduce the air pump load while stabilizing the atomization performance for large air mass flow condition. Even at low liquid mass, increasing AAT yields a visible improvement.

An Experimental Study to Apply an Absorption Refrigeration Cycle as a Dehumidifier in Humidification-Dehumidification Solar Desalination System

In this paper, the performance of a hybrid humidification-dehumidification (HDH) desalination system is experimentally studied. The system operates as an Open-Air Closed-Water cycle and utilizes a solar air heater to heat the input air to the humidifier. An Ammonia absorption refrigeration cooling cycle is used to condense the humid air, producing fresh water. Parameters such as temperature and relative humidity were measured in different stages of the system by using humidity and temperature sensors, and the thermodynamic analysis was carried out using EES software. The effects of the mass flow rate and temperature of the inlet air flow on the rate of desalination, COP, GOR, and the efficiency of the humidifier and the dehumidifier were studied. The analysis proved that the highest rate of water production and GOR were 150 g/h and 1.2, respectively. It was also perceived that with an increase in the air mass flow rate, the rate of water production and COP increased, while GOR and the efficiency of the dehumidifier diminished. This is while the efficiency of the humidifier remains nearly constant. It was also concluded that an increase in the temperature of the input air, leads to a fall in the GOR, while the other parameters show an increasing trend. Following the economic analysis of the system, the CPL was found to be $0.16 /L.

A comparative study on 3E (energy, exergy and economic) analysis of solar PV operated dome-shaped solar stills

The present investigation centers on the empirical examination of a solar photo-voltaic system that is integrated with a dome-shaped solar still in order to facili-tate the process of desalination. The objective is to increase the production of freshwater through the utilization of saline water at elevated temperatures. The assessment of the dome-shaped solar still system's efficacy is conducted through the examination of various parameters, including water yield, energy, exergy, concentrator performance, and economic feasibility. The study's results demon-strate that the dome-shaped solar still system's water yield, energy, and exergy were evaluated under varying inlet temperatures and mass flow rates. The study recorded the water yield, energy, and exergy at 4.73, 4.27, and 4.91 L per m?, re-spectively, with respect to the ambient inlet temperature. The water yield was ob-served to range from 6.9-7.7 L per m2 under different input temperatures and air mass-flow rates. The dome-shaped solar still system's energy and exergy efficien-cy were evaluated, indicating encouraging results for various inlet air tempera-tures. Furthermore, the economic evaluation revealed that the rate of freshwater production was cost-effective in comparison to conventional solar stills. In sum-mary, this research offers empirical proof of the efficacy of a solar photovoltaic -powered dome-shaped solar still for the purpose of desalination. It emphasizes enhancements in the output of fresh water, energy and exergy efficiency, and the economic viability of this technology.