Condensation Temperature Research Articles

Improving the Efficiency of a Conventional Vapor-Compression Refrigeration System used for Geothermal and Evaporative Cooling Techniques: Case Study in Iraq

A conventional vapor compression refrigeration cycle is among the most effective technology in refrigeration systems. In the present experimental study, thermal performance and the effect of the condenser temperature have been analyzed. With the decrease in the condenser temperature, the overall performance of the refrigeration cycle is increased. However, the cooling power and efficiency of conventional vapor pressure air conditioning units can experience a significant reduction when operating in extreme weather (hot and dry). This drop is mainly affected by the increase in the temperature (and pressure) of the condenser with an increase in the ambient air temperature. Unfortunately, Iraq experiences the most extreme summer seasons especially in the months of June and July when the temperature reaches or exceeds 50° C. So, ground cooling has been used in areas with a hot environment for split system air conditioners. Evaporative cooling was also performed to lower the coolant temperature of the AC unit used inside the condenser area. Experimental results showed that when using a geothermal heat exchanger, the temperature of the condenser is reduced from 116 to 110 ° C and the coefficient of performance (COP) is improved by 41%. In addition to this when the system uses evaporative cooling the temperature of the condenser is reduced from 110 ° C to 88° C. Moreover, a 65% improvement was made in the COP of the conventional vapor compression refrigeration cycle. Furthermore, with a decrease in the evaporator temperature from 6 to 3.5 °C there was an increase in refrigeration capacity by an average of 52%.

Thermal Performance Evaluation of a Novel Ejector-Injection Cascade Refrigeration System

In this article, a novel cascade refrigeration system is proposed for moderately low temperature applications. An ejector expansion vapor compression cycle (EEVCC) and a vapor injection cycle with the flash tank (VICFT) are coupled together through a cascade heat exchanger to develop the novel ejector injection cascade refrigeration system. The goal of this study is to investigate the potential improvement scope of a conventional cascade refrigeration system by integrating EEVCC and VICFT. A detailed energy and exergy balance analysis are conducted on the novel proposed system by considering the following three design parameters: (1) evaporator temperature; (2) pressure drop at the ejector; and (3) lower circuit condensation temperature. The results reveal that the performance of the proposed system is sensitive to pressure drop at the ejector and lower circuit condensation temperature for each evaporator temperature. Therefore, it is necessary to determine the optimal values of these factors in order to conduct an accurate performance analysis. Furthermore, a comparative study between the proposed system and the conventional system is conducted based on the first and second laws of thermodynamics. The results show that at −60 ℃ of evaporator temperature, the proposed system has 8.571 % COP improvement and 7.241 % exergy efficiency improvement over conventional cascade refrigeration system. This study also explores the suitable pair of refrigerants for this proposed system to minimize environmental impact. Among seven pairs of refrigerants investigated, R170 and R601 at LTC and HTC respectively shows the best performance. The proposed system was found to be more sensitive to change of LTC refrigerant than HTC.

Study on Binary Cycle Power Plant Optimization of PLTP Tulehu Ambon with Aspen HYSYS

Ambon Island has potential geothermal energy resources, one of them is geothermal energy in Tulehu where it is managed by PT. PLN has carried out exploration drilling, but the results of the exploration well test results obtained are low temperature and low pressure, so that cannot use conventional power plants. One of the technologies that can be used in this case is the binary cycle. The binary cycle can be used for low temperature geothermal fluid by using the working fluid to drive a turbine. The purpose of this research is to optimize power output by varying the working fluid, turbine inlet pressure and condenser temperature. Working fluids used are isopentane, n-butane and isobutane. The research method uses the Aspen HYSYS and uses REFTROP as a support analysis. Research shows that the power outputs of each working fluid are 2,471.30 kW, 2,052.13 kW and 1,743.09 kW. Working fluid selected used for PLTP Tulehu is isopentane whit net power output is 2,232.55 kW.

Thermodynamic Analysis of an NH3/CO2 Cascade Refrigeration System with Subcooling in the Low-Temperature Circuit Utilizing the Expansion Work

NH3/CO2 cascade refrigeration system is recognized one of the most promising technologies in low-temperature application. In this paper, a NH3/CO2 cascade refrigeration system with subcooling in low-temperature circuit driven by recovery expansion work has been proposed. The aim of this study is to investigate the proposed cascade refrigeration system compared with conventional cascade refrigeration system. Mathematical models based on energy conservation and exergy balance are established. The selection of different refrigerants in auxiliary subcooling system is discussed. The effects of operating parameters such as the condensation temperature of the low-temperature circuit, evaporation temperature, and expander efficiency on system performance are evaluated. The results show that the coefficient of performance and exergy efficiency of the proposed system are about 7.56% and 7.98% higher than that of conventional cascade refrigeration system. The discharge temperature of NH3 compressor can be significantly reduced by 18.33%. The isentropic efficiency of the expander has a large impact on the system performance.

Condensation heat removal due to the combined impact of natural convection and radiative cooling

The work examines the heat exchange characteristics of a condenser in which heat removal of the refrigerant condensation occurs due to natural convection and radiation cooling. The heat exchanger is designed to reduce energy costs for the removal of condensation heat. Unlike traditional air cooling condensers, it uses radiation cooling, a method of heat removal based on its transmission in the form of infrared radiation through the planet’s atmosphere into the surrounding outer space. A method for calculating the thickness of the radiating plate has been developed. To minimize material consumption and cost, the distance between the tubes is reduced to 40 mm, and the thickness of the aluminum radiating plate is reduced to 0.32 mm. The inner diameter of the coolant channels is 1 mm. For the experimental study of the condenser, an experimental stand working on R134a refrigerant was developed. Theoretical and experimental studies of heat transfer have been carried out. The heat transfer coefficient of the heat exchanger, reduced to the area of the radiating surface, was from 10.3±1.36 to 18.7±2.47 W·m–2·°C–1, when the condensation temperature was 12.8...21.9 °С higher than the temperature of atmospheric air. The operability of the condenser is shown both during the day and at night, in the presence of precipitation in the form of rain and snow, and a high level of cloudiness. The material capacity and filling of the refrigerant in the condenser are comparable to the characteristics of air-cooled condensers with forced air circulation. At the same time, it does not consume electricity. It can be used in stationary refrigeration systems (in data processing centers, commercial refrigeration equipment, air conditioners) to increase their energy efficiency

Design of cascade refrigerant process utilizing CO2 and NH3 to remove volatile organic compounds

Volatile Organic Compounds (VOC) are organic substances that evaporate from crude oil. About 0.08–0.15 % of the crude oil loaded into the ship is released as VOCs, which indicates that 50–200 tons of VOC are generated per loading. The recovery of VOCs generated by crude oil loading is essential to avoid any environmental issues. In this study, we developed the VOCs recovery process based on the selective condensation of VOCs. The process was modeled using Aspen HYSYS V10, and economic evaluation methods including CAPEX, OPEX, and benefits obtained by utilizing VOCs were conducted to analyze the economic effect of increasing the condensation temperature. Moreover, this system was optimized to increase the efficiency of the refrigerant cycle at a predetermined condensation temperature based on an economic evaluation. We investigated carbon dioxide and ammonia, which is eco-friendly and can be used in ammonia-powered ships with on-board CCS system, to replace propylene refrigerant. COP (Coefficient of Performance) was optimized when modifying the design of the refrigerant process such as mixed refrigerant and cascade refrigeration. As a result, using a cascade refrigerant system with carbon dioxide and ammonia exhibits a higher process efficiency than that of the existing propylene refrigerant. Using the proposed cascade refrigerant system using carbon dioxide and ammonia will enable a more efficient and eco-friendly operation of the VOC recovery system

Performance analysis of ionic liquids for simultaneous cooling and heating absorption system

A new working fluid for simultaneous cooling and heating absorption system, which is a combination of type 1 and type 2 absorption systems, was analyzed by simulation analysis. An imidazolium-based ionic liquid (IL) was used as an absorbent in the new working fluid and H2O and R32 were used as refrigerants. The states of the solution mixed with the refrigerant and absorbent were predicted using a non-random two-liquid (NRTL) model. The ILs with H2O refrigerant were 1,3-dimethylimidazolium dimethylphosphate ([DMIM][DMP]), 1-ethyl-3-methylimidazolium dimethylphosphate ([EMIM][DMP]), and 1-ethyl-3-methyl tetrafluoroborate ([EMIM][BF4]), and the IL with R32 refrigerant was 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][Tf2N]). Changes in the cooling, heating, and total coefficient of performances (COPs) according to the generation temperature and generator and condenser split ratios were analyzed. It was concluded that H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4] were suitable for simultaneous cooling and heating absorption systems with reasonable cooling, heating and total COPs. However, R32/[HMIM][Tf2N] had advantages for subzero cooling temperature and compactness of system size, while its COPs were lower than those of H2O/[DMIM][DMP], H2O/[EMIM][DMP], and H2O/[EMIM][BF4]. The total COP of H2O/[DMIM][DMP] was 0.98, indicating the highest performance. H2O/[EMIM][DMP] and H2O/[EMIM][BF4] exhibited total COPs of 0.96 and 0.97, whereas R32/[HMIM][Tf2N] showed a value of 0.55, under certain simulation conditions.

Optimization of wiped-film short path molecular distillation for recovery of cannabinoids from cannabis oil using response surface methodology

Few studies have explored the molecular distillation techniques that can improve the recovery of cannabinoids from crude cannabis oil with scale-up potential. Wiped-film short path molecular distillation is commonly employed in the cannabis industry for separating cannabinoids from terpenes and heavy compounds. It is a two-cut process, where the distillation of terpenes and cannabinoids occurs at the first and second cuts, respectively. In this experiment, the effects of the distillation parameters in the second cut, including feed flow rate (35–55 Hz) (41.6–71.3 mL min−1) and internal condensation temperature (60–90 °C), were examined and optimized using a central composite rotatable design towards maximizing cannabinoid mass and recovery efficiency in the distillate and minimizing cannabinoid mass in the residue. Results show that irrespective of internal condensation temperature, reducing feed flow rate increased the cannabinoid's yield and recovery. Although long distillation time was observed at low feed flow rates, the quality of cannabinoids remained unaffected. Response surface methodology was used to optimize the wiped-film short path molecular distillation of cannabis oil. The predicted optimal conditions were a feed flow rate of 35 Hz (41.6 mL min−1) and an internal condensation temperature of 75 °C. At these optimized conditions, the recovery efficiency of tetrahydrocannabinol was 93.4% in the distillate. To this end, this study provides distillation conditions to be considered by the cannabis industry if aiming for a cannabinoid-rich distillate from the molecular distillation process without affecting cannabinoid quality.

Technoeconomic assessment of distillation heat transfer intensification using aeroelastically fluttering reeds

AbstractDry cooling, where forced air is the heat transfer medium, is a preferable cooling method in arid locations lacking readily available process water. However, such locations often experience high ambient temperatures that limit the effectiveness of air cooling. The objective of this study is to quantify the economic and energetic benefits of heat transfer intensification via the implementation of aeroelastically fluttering reeds to the air‐cooled condenser of a methanol distillation column. Condenser size and performance, regarding recovered methanol and required fan power, is evaluated across condenser operating temperatures (Tcond) from 60 to 62°C and heat transfer coefficients (U) Ubase–2Ubase for a range of inlet air temperatures based on ambient temperature data from Yuma, Arizona. Under typical design sizing, condenser capital cost was reduced by 6%–35% (1.3Ubase–2Ubase) and nominal methanol recovery was increased from 0.26% to 0.38% (Tcond = 62–60°C). At optimized condenser size, all enhanced U and Tcond pairs increase methanol recovery and reduce fan power costs compared to the optimal Ubase reference. Overall, using enhanced heat transfer to maintain condenser temperature under a wider range of inlet conditions, rather than to reduce operation temperature, produces more favorable performance. Methanol price is not a determining factor in which pairs are profitable. Analysis was repeated for a global warming scenario, revealing more valuable improvements under elevated temperatures. Energy savings from condenser improvement to a methanol production system are not significant with respect to an optimized conventional system. Unit economic and energetic incentives suggest implementation of fluttering reeds may be justified in other applications.

Earth’s volatile depletion trend is consistent with a high-energy Moon-forming impact

The abundance of volatile elements in the silicate Earth relative to primitive chondrites provides an important constraint on the thermochemical evolution of the planet. However, an overabundance of indium relative to elements with similar nebular condensation temperatures is a source of debate. Here we use ab initio molecular dynamics simulations to explore the vaporization behavior of indium from pyrolite melt at conditions of the early magma ocean just after the Moon-forming impact. We then compare this to the vaporization behavior of other minor elements. When considering the volatility of the elements from the magma ocean in the absence of the solar nebula gas, we find that there is no overabundance of indium. On the contrary, there is a slight deficit in the abundance of indium, which is consistent with its moderately siderophile nature. Thus, we propose that a high-energy Moon-forming impact may have had a more significant contribution to volatile depletion than previously believed.

Numerical examination of water production by underground condensation system

ABSTRACT Water production by underground condensation is a low-capacity water-gathering technology for hot, humid climates. Hot, humid air is routed to subterranean pipes where it is progressively cooled and the vapor within the pipes appears as water droplets on the pipe surface. The goal of this paper is to quantify the amount of water extracted in the condensation system of humid and hot air. The water produced from humid air in buried pipes in the ground at a 0.5 m depth with different lengths is evaluated using MATLAB software, and optimal pipe length is established. Numerical findings show that water production is about 1 kilogram per day. It has been investigated how air temperature, pipe material, soil temperature, air humidity, and input speed influence underground condensation water production. It has been determined that 20 meters is the optimal length of the pipe. According to studies, Sandstone soil can produce 86%more water than other types of soil. It is also revealed that copper pipes could improve efficiency by 31%. The impact of effective factors on the efficiency of the condensation system, such as intake air temperature and humidity, inlet air velocity, and soil temperature, has also been assessed.

Advanced exergy, economic, and environmental evaluation of an Organic Rankine Cycle driven dual evaporators vapour-compression refrigeration system using organic fluids

The current research combines a dual evaporator vapour-compression refrigeration system with an organic Rankine cycle. The integrated system is a renewable energy-based technology that can provide refrigeration at different refrigeration temperatures and capacities. The system's performance is compared using five different organic working fluids: butane, pentane, isopentane, hexane, and R245fa, to recommend the most suitable fluid for the system. Coefficient of performance (COP), exergy efficiency (ηex), total cost (Ctot), and payback period (PB) are taken as the performance parameters. Moreover, the system's exergy performance is analysed using advanced exergy analysis (AEA), and sensitivity analysis to determine the optimal operating condition for system components. The result indicates that butane is the optimal fluid for improving energy, exergy, economical, and environmental performance. The system has a COP of 0.377, an exergy efficiency of 10.91%, a total cost of $33,091, and a payback period of 5.8 years. Boiler, compressor, condenser, and EPG make up 31% of the total exergy destruction that can be avoided by adequately selecting their operating condition. The optimal condition for boiler temperature, condenser temperature, the pinch-point temperature difference in condenser and boiler, and compressor efficiency is 120 °C, 40 °C, 3 °C, 10 °C, and 0.7, respectively.

Energy, exergy, economic and environmental analyses of a cascade absorption-compression refrigeration system using two-stage compression with complete intercooling

Cascade refrigeration system with multiple cooling temperature ranges can be found in many areas such as seafood processing and cold storage. Using multiple compressors respectively corresponding to different temperature ranges is the most common way to control the evaporation temperature and cooling capacity. However, such an approach is inefficient and uneconomical. In order to relieve this problem, a novel cascade absorption-compression refrigeration system using two-stage compression with complete intercooling (ACRSI) is proposed in this paper. A mathematic model based on energy, exergy, economic and environmental analyses is developed to evaluate the system performance at five operation parameters including the condensation temperature as well as the evaporation temperatures and the cooling capacities in two cooling temperature ranges. The parameter analysis is conducted to obtain the optimal middle temperature in the cascade condenser. The simulation results show that the optimal middle temperature is 11 °C, which cannot be influenced by two evaporating temperatures and cooling capacities. Meanwhile, the corresponding optimal COPI considering the consumption of waste heat is 0.5 and the optimal COPII ignoring the consumption of the waste heat is 3.25. The ECOP is 141.7% of the basic cascade absorption-compression refrigeration system (ACRS) and the average annual cost is $246,306.62, which is 82% of ACRS. Besides, the average annual environmental cost of ACRSI is only $580, which is significantly environmentally friendly.

Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder–feeder mechanism: a case study for the 2015 Cumbria flood

Abstract. The formation of orographic precipitation in mixed-phase clouds depends on a complex interplay of processes. This article investigates the microphysical response of orographic precipitation to perturbations of temperature and cloud condensation nuclei (CCN) concentration. A case study for the 2015 Cumbria flood in northern England is performed with sensitivities using a realization of the “piggybacking” method implemented into a limited-area setup of the Icosahedral Nonhydrostatic (ICON) model. A 6 % K−1 enhancement of precipitation results for the highest altitudes, caused by a “mixed-phase seeder–feeder mechanism”, i.e. the interplay of melting and accretion. Total 24 h precipitation is found to increase by only 2 % K−1, significantly less than the 7 % K−1 increase in atmospheric water vapour. A rain budget analysis reveals that the negative temperature sensitivity of the condensation ratio and the increase in rain evaporation dampen the precipitation enhancement. Decreasing the CCN concentration speeds up the microphysical processing, which leads to an increase in total precipitation. At low CCN concentration the precipitation sensitivity to temperature is systematically smaller. It is shown that the CCN and temperature sensitivities are to a large extent independent (with a ±3 % relative error) and additive.

Energy and exergy analysis of a novel ejector-expansion refrigeration system based on condenser outlet split cycle

BackgroundIn this paper, the possibility of performance enhancement of a new Condenser Outlet Split (COS) cycle with the presence of two ejectors working in different temperatures is investigated. In order to enhance the cycle performance, an auxiliary ejector-expansion refrigeration cycle equipped with a separator and a secondary ejector has been employed, resulting in further performance improvement on both exergy and energy analyses on the different condenser and evaporator temperatures. MethodsThe thermodynamic equations of each component in the standard and proposed cycles have been solved in EES software. Significant FindingsThe auxiliary cycle boosted the pressure at the inlet of the secondary nozzle of the main ejector leads to a better performance of the proposed cycle. Through energy analysis, compressor work recovery increased by 12% and the coefficient of performance showed up to 14.1% enhancement. Through exergy analysis, our proposed cycle have been produced 6.8% reduction in exergy destruction compared to the standard cycle, and the total exergy performance of the given system can be increased from 8.2 to 14%.

Spin-polarized spatially indirect excitons in a topological insulator.

The exciton, a bound state of an electron and a hole, is a fundamental quasiparticle induced by coherent light-matter interactions in semiconductors. When the electrons and holes are in distinct spatial locations, spatially indirect excitons are formed with a much longer lifetime and a higher condensation temperature. One of the ultimate frontiers in this field is to create long-lived excitonic topological quasiparticles by driving exciton states with topological properties, to simultaneously leverage both topological effects and correlation1,2. Here we reveal the existence of a transient excitonic topological surface state (TSS) in a topological insulator, Bi2Te3. By using time-, spin- and angle-resolved photoemission spectroscopy, we directly follow the formation of a long-lived exciton state as revealed by an intensity buildup below the bulk-TSS mixing point and an anomalous band renormalization of the continuously connected TSS in the momentum space. Such a state inherits the spin-polarization of the TSS and is spatially indirect along the z axis, as it couples photoinduced surface electrons and bulk holes in the same momentum range, which ultimately leads to an excitonic state of the TSS. These results establish Bi2Te3 as a possible candidate for the excitonic condensation of TSSs3 and, in general, opens up a new paradigm for exploring the momentum space emergence of other spatially indirect excitons, such as moiré and quantum well excitons4-6, and for the study of non-equilibrium many-body topological physics.

Experimental investigation on flow condensation pressure drop of R134a in microfin tube at high mass flux

Abstract To clarify the influencing mechanisms of the experimental condition and the tube structure on the pressure drop of heat transfer fluid, the two-phase flow condensation pressure drop of R134a inside the microfin tube was experimentally studied at high mass flux, which is different from other conventional researches. The experimental result shows the pressure drop is proportional to mass flux and fin helical angle, and is inversely proportional to condensation temperature and coolant Reynolds number. Moreover, the experimental data of pressure drop was compared with the predicted value of some existing correlations for the microfin tube. It can be found that the correlations of Cavallini et al., Han et al. and Haraguchi et al. show a good prediction effect with mean relative deviation (MRD) of 13.89, 16.08 and −2.19%, respectively. The correlations of Pierre/0.053, Kedzierski et al. and Choi et al. all underestimate most of the experimental data of the pressure drop inside the tube, and their prediction deviations are >10%. That is, the application effect of the separated flow model is better than that of the homogeneous flow model. Finally, the Kedzierski et al. correlation was improved to realize a high-precision prediction of the fluid flow mechanism inside the tube. Because the prediction deviation of the improved correlation between the experimental value and the predicted value was greatly reduced, its prediction deviation is <10% for R134a and R410A; therefore, it can be said the improved correlation has a good predictive result for the pressure drop.

Thermodynamic determination of condensation behavior for the precursory elements of radioxenon following an underground nuclear explosion

The measurement of radioactive xenon isotopes (radioxenon) in the atmosphere is a tool used to detect underground nuclear explosions, provided that some radioxenon escaped containment and that fractionation leading to the alteration of the relative proportions of these isotopes, is accounted for. After the explosion, volatilization followed by melting of the surrounding rocks produces a magma where the more refractory radioactive species get dissolved while the more volatile ones contribute to the gas phase that might escape. Indium, tin, antimony, tellurium and iodine are the main fission products involved in the decay chains leading to radioxenon. In this study, condensation as a function of temperature for these precursors of radioxenon were determined using thermodynamic calculations for systems with complex chemical composition corresponding to major environments of known underground nuclear explosions and for a range of pressure values representative of the cavity evolution. Our results illustrate a large difference between the relevant condensation temperatures for the radioxenon precursors and the tabulated boiling temperatures of the pure compounds often used as indicators of their volatility. For some precursory elements such as tin, the often-considered Heaviside function represents an oversimplification of the concept of condensation temperature, as condensation occurs over a temperature range as large as 2000 K. This results from the speciation of the elements in the gas phase mainly driven by the formation of oxides. Condensation also strongly depends on pressure while it moderately depends on the bulk chemical composition of the system. This study shows the importance and complexity of the condensation process following underground nuclear explosions. It also shows how thermodynamic computations allow the prediction of the quantity and the relative proportions of radioactive xenon isotopes in the gas phase in the presence of magma, before their potential emission to the atmosphere. Better detection, discrimination and understanding of underground nuclear explosions should arise by taking into account the fractionation resulting from the condensation of the radionuclides producing radioxenon in nuclear cavities.

Experimental study on performances of flat-plate pulsating heat pipes without and with thermoelectric generators for low-grade waste heat recovery

Low-grade waste heat recovery has significant importance to energy saving and emission reduction. Due to the lack of cost-effective heat recovery technology, a lot of low-grade heat is wasted. In this paper, performances of 3D-printed flat-plate PHPs and computerized numerical control (CNC) machined flat-plate PHPs without and with thermoelectric generators (TEGs) under four recycling modes were studied. The effects of the type and number of flat-plate PHPs, condenser section length, recycling mode, flow arrangement, velocity and temperature of hot/cold air, the number and layer number of TEGs on the performances of the waste heat recovery system were studied to maximize its performance. Results indicate that the performance of the heat recovery system with CNC machined flat-plate PHP is generally better than that with 3D-printed flat-plate PHP, and their maximum effective thermal conductivities can reach 585 and 541 W/(m·K), respectively. Performances of flat-plate PHPs based waste heat recovery system can be improved by using slotted fins, increasing the condenser section length and flat-plate PHPs number. For the air-to-air heat recovery system with three flat-plate PHPs, the maximum heat transfer rate and heat recovery rate can be up to 303 W and 85.3%, respectively. As for heat-to-power waste heat recovery under Mode 3, flat-plate PHP coupled with three TEGs can achieve its maximum open-circuit voltage of 7.6 V and output power of 1.98 W. Preliminary economic analysis proves that flat-plate PHPs based waste heat recovery system displays good economic benefits. These results may be helpful in designing a cost-effective flat-plate PHPs based low-grade waste heat recovery system.

Thermodynamic Optimization of Utilization of LiBr + LiCl/H2O Solution Mixture on a Single-Effect Absorption Chiller Driven by Solar Energy

Abstract The interest in absorption chillers for air conditioning applications has increased recently due to the negligible electricity requirement. Especially in Turkey, where the potential of renewable energy sources such as solar energy is high, it is possible to achieve significant energy savings by utilizing absorption chillers. This study presents comprehensive energy and exergy analyses of a solar-driven single-effect absorption chiller with LiBr + LiCl/H2O (mass ratio 2:1) solution mixture. Thermodynamic optimization is carried out for the first time in this study to determine the optimum generator temperature using different absorber and condenser temperatures to maximize exergy efficiency of the absorption chiller. Also, generator temperature ranges for each absorber and condenser level are determined in this study so that the chiller using solution mixture can operate without crystallization. The coefficient of performance, total exergy destruction rate, and exergy efficiency of solar-driven absorption chiller for solar collector area of 194 m2 under a certain optimized operating condition are 0.402, 113.63 kW, and 1.255%, respectively. Thanks to an alternative solution mixture compared to LiBr/H2O, the effective thermodynamic parameters can be improved and become more advantageous. The comparison results demonstrated that the thermodynamic performance of the system not only increased but also the thermal capacities and collector area decreased.