Performance Of Refrigerator Research Articles

Integrated product selection and process optimization for cascade refrigeration system

Designing new refrigerants is a highly advanced field, where it is essential to create efficient refrigerants to meet the growing demand. However, the current approach of relying on experts’ experience or existing refrigerant databases may not result in the best refrigerant. In this paper, a refrigerant selection method is proposed that combines the selection of refrigerants with the optimization of the refrigeration process, thus allowing for the selection of the best refrigerant based on the requirements of the refrigeration process for single and cascade system. The paper proposes the combination of properties databases of different refrigerants in the refrigeration process model, enabling both operating conditions and refrigerants to be decision variables. The coefficient of refrigeration performance (COP) serves as the objective function, with 285 compounds as candidate refrigerants. By optimizing this model, both the optimal refrigerant and operating conditions can be obtained simultaneously. However, due to the high complexity of the model, the authors propose an algorithm based on decomposition to efficiently solve the mixed integer nonlinear program, as it provides the best performance. Results demonstrate that the proposed algorithm can achieve the optimization efficiently. Besides, the more complex the problem, the more time it can save.

STUDI EKSPERIMENTAL NATURAL REFIGERANT DENGAN VARIASI DIAMETER TiT-HEAT EXCHANGER TERHADAP REFRIGERATOR PERFORMANCE

ABSTRACT
 Almost all households in Indonesia use a refrigerator as a place to store food that is more durable. But behind these needs, refrigerators are identified as one of the household appliances that use high electrical energy. Therefore, this study aims to examine the use of Tube in Tube Heat Exchanger (TiTHX) with refrigerant R290 in the refrigerator system to reduce household electricity consumption. This research was conducted experimentally by varying the 3 diameter ratios on TiTHX. The results showed that the use of TiTHX with the most optimum value was obtained at the variation diameter ¼ : ½ increasing refrigerator performance by 3.7%. and also reduce the consumption of electricity costs up to Rp. 17,544.44 per month. This is because the difference between the evaporation pressure and condensation pressure is smaller in systems using TiTHX which then results in lower compression work.

Recent progress in pool boiling heat transfer of low GWP refrigerants with the effect of POE lubricant oil

The recent research on pool boiling heat transfer of low global warming potential (GWP) refrigerants under the effect of polyolester (POE) lubricating oils are summarized in this article. Recently, several low GWP refrigerants have been developed as alternatives to the high GWP refrigerants such as hydrofluorocarbons (HFCs). However, it is crucial to comprehend how lubricating oil affects the performance of low GWP refrigerants in terms of compatibility and pool boiling heat transfer (commonly seen in flooded evaporators). The overview suggests that the low GWP refrigerants are compatible with POE oil. Whereas, its heat transfer performance depends on the mass concentration of oil present in the refrigerant. In addition, the pool boiling performance of the low GWP refrigerant is also affected by other factors such as evaporator pressure, saturation temperature, heat flux, and thermophysical properties of refrigerant and oil mixture. The analysis of available heat transfer coefficients (HTCs) for refrigerant-oil mixture shows that the heat transfer performances of the enhanced surfaces are very sensitive in the presence of oil; whereas, it is less severe on a smooth surface. On smooth surfaces, a refrigerant-oil mixture (3% mass concentration) could augment the HTCs as compared to the pure refrigerants subject to evaporator pressure/saturation temperature. In contrast, the simulation studies show that the oil additives always deteriorate the HTCs compared to the pure refrigerant.

Viscosity measurement and correlation of saturated solutions of R-290 with three lubricants

As a natural refrigerant, propane (R-290) with a similar cooling capacity of R-22 is being increasingly widely attention in refrigeration and air conditioning (RAC). In the refrigeration cycle, the working fluid is actually a mixture of refrigerant/oil. To gain insight into the performance of vapor-compression refrigeration using R-290 as a refrigerant, the thermophysical properties of R-290/oil mixtures should be well known, especially the viscosity behavior. A self-designed double-capillary apparatus was applied to measure the viscosities of saturated solution for R-290 with three synthetic oils (PAG 68, POE 75 and PVE 68) from 303.15 to 348.15 K. The results show that the viscosities of three blends have the similar trend as rising solubility. The absorbed R-290 has a great impact on the oil viscosity in the low temperature region. Viscosities of R-290/oil mixtures could be well represented by the Eyring-MTSM model.

Experimental study on performance improvement of a household refrigerator with a flying-wing evaporator

In order to improve the performance of a household refrigerator, a flying-wing evaporator (FWE) is to replace the original finned tube evaporator (FTE). Different from the FTE, the fins of the FWE are formed directly on the tube by shoveling movement. Therefore, the FWE has high efficient heat transfer performance due to no thermal contact resistance between the tubes and the fins. According to different combinations of fin pitch and number of tube rows, three different structures of FWE are designed and tested in comparison with the original FTE on a double-door household refrigerator. The results show that the FWE shortens the cooling duration by 0.32 h (9.3%) and reduces the annual energy consumption by 4.28% with a 25% reduction in volume and a 13.5% reduction in refrigerant charge. This study proves that applying a FWE into a household refrigerator instead of the traditional FTE is one of the effective ways to decrease the volume of evaporator, reduce the energy consumption of refrigerator and enhance the effect of food preservation.

Techno-economic and environmental performance of a novel poly-generation system under different energy-supply scenarios and temperature and humidity independent control

The stand-alone energy production for power generation, heating or cooling is an usual method for low-medium grade energy utilization. To enhance the energy utilization efficiency, a combined cooling, heating, and power (CCHP) system, which is based on two-stage vapor compression cycle (TSVCC) and organic Rankine cycle (ORC), is proposed with temperature and humidity independent control (THIC). The essential parameters are changed to enhance the CCHP performances based on the thermodynamic model constructed. Moreover, the cooling performance are evaluated under different energy-supply scenarios, and the coupling effects of the CCHP are demonstrated through the THIC strategies. The results display that when the return air and fresh air are treated with energy of corresponding grade respectively, the higher outdoor relative humidity and the lower fresh air ratios are beneficial for enhancing refrigeration performance. The adverse effects of condensation temperature on both the economic and environmental performance far surpasses that of sub-cooling degree. With a rise of 10 °C in condensation temperature and sub-cooling degree, the economic performance decreases by 27.89% and 3.7% respectively, while the environmental performance decreases by 24.33% and 0.35% respectively. Furthermore, the proposed system can be switched to variant models according to different strategies in seasons to improve efficiency of energy utilization, which could be used in engineering applications.

Evolution of magnetic and magnetocaloric behavior in Mn1-xCdxCoGe intermetallics

The hysteretic loss and evolution of magnetocaloric behavior in both increasing and decreasing fields of Mn1-xCdxCoGe (x = 0.02, 0.05, and 0.08) system prepared by conventional arc-melting technique were studied. Results show that Mn replacement by Cd could regulate Curie temperature from 318.1 K to 333.9 K as the x content increase without altering the original crystal structure. Meanwhile, the feature of magnetic phase transition was revealed by Arrott curves, n (T, H) plots, and universal behavior associated with its dispersion parameters. In addition, the critical parameters extracted by different techniques reveal the long-range ordering magnetic interactions. The Mn0.95Cd0.05CoGe sample presents the maximum magnetic entropy changes of 11.125 J/(kg·K) and 11.134 J/(kg·K) for Δμ0H= 7 T in increasing and decreasing modes with hysteretic loss of 1.13 J/kg. Furthermore, the evolution of temperature average entropy changes and normalized refrigerant capacity under increasing and decreasing fields were also introduced to further elaborate on the performance of magnetic refrigeration.

Dynamic variation of bed parameters and time optimisation of solar adsorption refrigeration system based on CFD simulation

One major reason for the limited application of adsorption refrigeration systems is their lower refrigeration efficiency and performance compared to other alternatives. Additionally, there is limited research focused on optimizing the system performance over time. This paper presents a numerically validated thermodynamic model to analyse the effect of adsorption time on the performance efficiency enhancement of a solar adsorption refrigeration system. The adsorption rate model proposed by Sokoda and Suzuki has been used to evaluate the adsorption and desorption characteristics of water vapor on silica gel and the solar collector system has been fitted to a heat flow density equation based on measured concentrated solar heating. The water vapor adsorption capacity on silica gel as a function of temperature and pressure in the adsorption bed has been numerically evaluated during the four stages of the cooling cycle, namely adsorption, preheating, desorption, and cooling. The coefficient of performance and specific cooling power have been utilized as the major performance indicators, in the context of the influence of adsorption time on the refrigeration performance of the system. The simulation results revealed that, although increasing the adsorption time increased the system's cooling capacity, it also prolonged the cycle time and adversely affected the dynamics of preheating and desorption processes (due to increased solar input). As a result of the numerical simulation, an optimum value of adsorption time has been predicted to be 71 min corresponding to a coefficient of performance equal to 0.476 and a specific cooling power equal to 28.6 W/kg.

Performance comparison of pure, binary and ternary refrigerants considering different systems

Mixed refrigerants are widely used in heat pumps; thus, it is necessary to analyze the performance advantages of pure, binary and ternary refrigerants. In this paper, 14 kinds of pure refrigerants were selected, and 24,024 kinds of pure, binary and ternary refrigerants were obtained and analyzed. The refrigerant performance in terms of the COP and volumetric heating capacity were compared in normal, vapor injection with internal heat exchanger and with flash tank systems. In this paper, 40 °C was used as the temperature lift, and four cases with heating production temperatures of 70, 80, 90 and 100°C were analyzed. The Pareto fronts for the different refrigerant types and compositions were obtained by using exhaustive method. The COP and volumetric heating capacity exhibited contradictory trends in all cases. The results showed that mixed refrigerants had significant advantages over pure refrigerants in achieving the Pareto fronts. However, in all cases, when the COP was higher than 5, the binary refrigerants had similar advantages to ternary refrigerants; thus, ternary refrigerants were not necessary. When the COP was lower than 5, it was difficult to further increase the volumetric heating capacity by sacrificing the COP.

Numerical study on the influence of the mixing chamber structure in a dilution refrigerator on the heat and mass transfer characteristics of 3He-4He at ultralow temperatures

The acquisition and utilization of ultralow temperatures has become a popular research topic with great value. Dilution refrigerators (DRs) with 3He-4He mixtures as refrigerants are the main tool to obtain millikelvin temperatures and have been applied in space exploration, low-temperature physics experiments and other fields. As the mixing chamber at the cold end of DR, direct study on the influence of its structural parameters on heat and mass transfer at ultralow temperatures is still lacking. In this study, a coupled numerical model of the heat and mass transfer of 3He-4He mixture in the mixing chamber at ultralow temperature is established. The effects of various structural parameters are simulated using a finite element model, and the refrigeration performance of different mixing chambers is evaluated by refrigeration temperature and refrigeration power. First, the molar amount of the mixture in the mixing chamber affects the refrigeration temperature and refrigeration power. When the effective volume of the cylindrical mixing chamber increases twofold, the refrigeration power increases by 11.88%. When the volume of the cylindrical mixing chamber is expanded twofold, the cooling time required to reach 15 mK is increased by 57.29% compared to the standard cylindrical mixing chamber. We further found that appropriately reducing the proportion of the concentrated phase coolant is beneficial for refrigeration performance. In addition, cuboid mixing chambers achieve lower refrigeration temperatures than mixing chambers with other shapes. This study is of great significance to guide the design and optimization of mixing chambers.

Experimental investigation and analysis of cooling performance of solar thermoelectric refrigerator

Nowadays, a potential alternate source of renewable energy for heating and cooling purposes is solar thermal energy. In remote areas electricity problems, the solar cooling and heating are very useful for living. The present research is focus to develop a solar thermoelectric refrigerator (STER) by using thermoelectric module based on principles of Peltier effect (creating cold and hot zone). Inside the refrigerator compartment, the cold side zone of the thermoelectric module is used for refrigeration. However, the rejected heat from other hot side of module to ambient surrounding through heat sinks and fans. The experimental model considers a steel aluminium box of dimension 200 × 195 × 300 mm3 having two thermoelectric (TE) modules and two heat sink with cooling fan to investigate the performance evaluation of solar thermoelectric refrigerator. The STER unit utilises a 100 W solar panel. The experimental result of double module with internal fan shows that the STER unit reduces room temperature of 33 °C to 4.1 °C in 44 min with coefficient of performance (COP) of 0.61. Therefore, the present novel refrigeration system is augmented for domestic and medicine storage purpose in remote area with economically viable and environmental friendly.

Theoretical exploration of low GWP refrigerant mixtures as replacement to HFC-134A in a vapour compression refrigeration system

Hydro-fluorocarbons (HFCs) that are not harmful to ozone layer and are used in many appli-cations, including as refrigerants, aerosols, solvents and blowing agents for insulating foams replace chlorofluorocarbons and hydro chlorofluorocarbons (HCFCs). However, some HFCs have a high GWP, which stands for “Global Warming Potential(GWP).” Because of the grow-ing concern over global climate change, researchers are paying closer attention for alternatives to these HFCs. The main focus of this work was on the theoretical analysis of the refrigerant mixtures namely AC5, R430A, and R440A as direct replacements for HFC-134a in a refriger-ator. The performance of the refrigerator may be enhanced using heat exchanger. The com-pressor discharge temperature, COP, VCC, refrigerant mass flow rate, power consumption of a compressor and pressure ratio were used to measure the performance of a home refrigerator. The typical COP of R440A and R430A was about 2.5% and 1.4% higher than that of HFC-134, while the average COP of AC5 was 6.1% lesser than that of HFC-134a. R430A almost has the same VCC (Volumetric Cooling Capacity) as HFC-134a. The results also show that HFC-134a uses more power than AC5, R440A, and R430A. R440A and AC5 have higher compressor outlet temperatures than HFC-134a, which affects the life span of the compressor. In com-parison with all the above refrigerants, R430A gives the best overall performance and used as replacement to HFC-134a in a VCR.

Ambient temperature, refrigerator food load, and door openings effect on a preservation performance indicator based on chicken temperature data and predictive microbiology.

Home preservation depends on the food matrix, refrigerator design/technology, consumer actions, and ambient temperature. Storing different food matrices in product-relevant refrigerator locations generating different temperature histories can be used to develop an indicator of how refrigerator technology, consumer habits, and environment conditions impact the refrigerator food preservation performance. In this study, poultry, particularly prone to spoilage reflecting its pH, nutrient availability, and high aw, was used to evaluate refrigerator preservation performance as affected by compressor technology (single [SS] and variable speed [VS]), ambient temperature (21.1°C [LT] and 32.2°C [HT]), and refrigerator load (22.5kg [RL] and 39kg [HL]). Time-temperature values collected for chicken breast stored in a drawer independently controlled at 0°C in a refrigerator set 5°C, and a Pseudomonas predictive microbiology model, were used to estimate a normalized refrigerator performance indicator (RPI). Values <1, ∼1, and >1 described excellent, good, or poor performance, respectively. A first analysis revealed that up to 54% of chicken breast temperatures were above its recommended refrigerated storage value. When ignoring variability sources, SS technology yielded RPI values ranging 0.61-0.70, whereas the more energy efficient VS compressor yielded values ranging 0.86-1.14. The higher and wider VS RPI range reflects a compressor control logic optimized for energy efficiency compliance while disregarding effects on food preservation. When considering the variability of model parameters and temperature measurements through one-sided 95% confidence intervals yielded RPI reaching 1.16. Although the independently controlled drawer preservation performance was near optimal, it can improve by considering energy use and preservation impact when optimizing the compressor speed control protocol. PRACTICAL APPLICATION: Worldwide poultry meat consumption has reached 15kg per person. Refrigeration is widely used for its safety and quality preservation. Efficiency regulations decreased the energy use of residential refrigerators by nearly tenfold even though their size increased by 50% in the last half century. In this study, we provide quantitative evidence that their preservation performance must be improved. This is particularly true for upper end units typically equipped with quieter and more energy-efficient variable speed compressors. The same methodology can be used to evaluate the preservation performance of the storage units, trucks, and display cases used for refrigerated products.

Theoretical analysis of three CO2/C3H8 (R744-R290) cascade refrigeration systems with precooling processes in low-temperature circuits

In a cascade refrigeration system (CRS), the superheat of the vapour discharged from a low-temperature compressor is large for refrigerants with significant adiabatic exponents, and part of the cooling heat in the fluid can be removed using precooling technology. In this study, three CO2/C3H8 cascade refrigeration systems with precooling processes, namely a CRS with an air precooler (CRSA), CRS with a mechanical precooler (CRSM) and CRS with both an air precooler and a mechanical precooler (CRSAM), are proposed. The performances of the proposed systems are compared studied that of a conventional cascade refrigeration system (CCRS) in terms of energy and exergy. The results indicate that a design that arrange precoolers and precooling refrigerant circuits in low-temperature circuits is beneficial, directly reducing the work input of C3H8 compressors and improving refrigeration performance. When the condensing temperature rises from 12 °C to 48 °C, the coefficient of performance (COP) of the CRSA, CRSM and CRSAM enhances by 2.73% to 5.19%, 1.82% to 4.90% and 3.71% to 7.86% compared with the CCRS, and the exergy efficiency averagely improves by 4.01%, 3.41%, and 8.48%, respectively. In addition, the applicable conditions of the different systems are discussed, and the component cost is evaluated in terms of component capacity. The research results may provide guidelines for the practical application of CO2/C3H8 CRS with precooling processes.

The role of external heat exchangers in the performance of active magnetic refrigerator

The static performance of an Active Magnetic Regenerator Refrigerator (AMRR) can be evaluated using various indicators, such as the refrigeration capacity, coefficient of performance, and efficiency, for a given temperature span (that is, the hot-to-cold heat source temperature difference). The two main control parameters (cycle frequency and fluid mass flow rate) must be adjusted according to the imposed temperature span to achieve optimum performance. However, in real-world operations, heat exchangers at both ends of the regenerator thermally connect the device to the surroundings, and the hot and cold temperatures are no more imposed quantities. Under these heat transfer constraints, the device performance, in terms of refrigeration capacity, could be suboptimal, even after adjusting the two control parameters. Indeed, to provide optimal performance, heat exchangers must have precise values of the overall heat transfer coefficient, depending on the desired operating temperature difference. So, if a single pair of heat exchangers are used, it is impossible to characterize the performance of the magnetic refrigerator at different temperature spans. This work compares the systematic procedures for evaluating the performance of a magnetic refrigeration device either with heat exchangers at the cold and hot ends or with an imposed temperature span. Both procedures can be used to obtain the optimal AMRR performance curves. However, this work highlights the necessity to use different (or variable heat transfer coefficient) heat exchangers when the first procedure is adopted. The needed overall heat transfer characteristic of both heat exchangers will be lower for a higher temperature span.

Energy and Exergy Analysis on Zeotropic Refrigerants R-455A and R-463A as Alternatives for R-744 in Automotive Air-Conditioning System (AACs)

The popularity of vehicles and the increased time spent in cars with air conditioning systems has led to regulations in many countries that require the use of environmentally friendly refrigerants with minimal global warming and zero ozone depletion potential (GWP and ODP). Cars need high-performance, eco-friendly air conditioning systems to reduce their impact on the environment, lower fuel consumption, and decrease carbon emissions. The aim of the current work was to propose CO2-based blend zeotropic refrigerants, R-455A (R-744/32/1234yf) and R-463A (R-744/32/125/1234yf/134a), to improve the thermodynamic performance of pure CO2 refrigerants. The thermodynamic energy and exergy analysis and system optimization of an AAC system for the new zeotropic refrigerant blends compared to carbon dioxide (R-744), using Aspen HYSYS software, were investigated. The influence of cooler/condenser pressure, average evaporator temperature, cooler/condenser outlet temperature, and refrigerant flow rate on the cycles’ COP and exergy efficiency were conducted and are presented. The results showed that, at the same operating condition parameters, the cycle COP improved by 57.6 and 76.5% when using R455A and R463A instated of R744, respectively, with the advantage of reducing leakage problems due to the higher operating pressure of R744 (5–7 times higher than those of R455A and R463A), as well as requiring heavy equipment, but at optimal operating condition parameters, R744 and R-463A had a maximum COP of 14.58 and 14.19, respectively. The maximum COPs of R744, R455A, and R463A based on the optimal pressure of the cooler/condenser were 3.1, 4.25, and 5.4, respectively. Additionally, regarding the need for environmentally friendly air conditioning systems with acceptable performance in cars due to their impact on the environment and their contribution to global warming, the blend R455A is recommended for use as a refrigerant in AAC systems.

Maintenance of the last step of the cold chain: on-farm refrigerator storage and performance

Failure of the cold chain and thermal damage to refrigerated vaccines can result in losses for cattle owners and safety issues for cattle. The primary objectives of this study were to quantify characteristics of refrigerator operating temperatures on re­gional dairy and veterinary operations, including the percent­age of time that refrigerators spent outside the recommended temperature interval (RTI) of 36°F to 46°F (2°C to 8°C) for vac­cine storage, the mean daily temperature range (MDTR), and identify variables associated with those characteristics.

Influence of the interfacial thermal resistance of a gadolinium/copper bimetal composite on solid-state magnetic refrigeration

The low heat transfer efficiency caused by a magnetocaloric material (MCM) with low thermal conductivity is the bottleneck that limits the performance of magnetic refrigeration (MR). Previous studies have shown that a bimetal composite of a high thermal conductivity material and an MCM is effective in improving the heat transfer rate. However, the bimetal composite structure causes extra interfacial thermal resistance (ITR). Therefore, this study investigates the processing of gadolinium/copper bimetal composites by fusion casting and experimentally determines the ITR. To evaluate the structural heat transfer capability, the equivalent thermal conductivity (keq) is proposed, which is calculated based on the ITR result and simulation. The influence of the ITR and keq on the cooling performance of a fully solid-state MR is carefully investigated using a validated simulation model. The results show that the smallest ITR of 3.74 × 10−5 m2 K W−1 is obtained with a copper pouring temperature of 1200 °C owing to the thinnest bonding interfacial layer. The topology-optimized structure, using the ITR obtained by fusion casting, has an keq of 159.8 W m−1K−1, with an increase of 39% compared to the structure assembled with thermal grease. As a result, the maximum specific cooling power (SCPmax) range and corresponding optimal operating range are significantly expanded to 45.6–209.3 W kg−1 and 0.23–0.61 rpm, respectively, with an average SCPmax increase of 35.5%. The combination of using topology optimization design to reduce the structural thermal resistance and using a suitable forming process to reduce the ITR can be more beneficial to the performance improvement of solid-state MR.

Thomson effect in thermionic refrigeration: Enhanced performance of graphene/2D-semiconductor/graphene heterostructure cooler

Two-dimensional (2D) materials and their heterostructures have been widely explored for high-performance energy conversion applications. The Thomson effect—a higher order transport process—plays an important role in thermoelectric devices, yet its effect on the performance of thermionic devices remains unknown thus far. Here, we investigate the performance of thermionic refrigeration in vertically stacked heterostructure (VHS) and laterally stitched heterointerface (LHS) composed of a graphene and a 2D semiconductor (i.e., MoS2 and WSe2) in the presence of the Thomson effect. Using a temperature-dependent Seebeck coefficient, we derived the analytical expressions of the cooling efficiency and the effective ZT. We shall show that the Thomson effect improves the coefficient of performance (COP) by up to 20%, particularly, in the case where the temperature difference between the cold and the hot electrodes is large. However, the Carnot efficiency decreases with the temperature difference. The overall COP is reduced by the Thomson effect. We calculate the COP in graphene/MoS2/graphene and graphene/WSe2/graphene VHS and LHS devices. We show that the LHS composed of WSe2 significantly outperforms the VHS and MoS2 counterpart. These findings provide an understanding of thermionic processes in the higher-order transport regime and shall offer insights into the design of novel 2D material heterostructure thermionic energy converters.

Multiple spin switching and magnetocaloric effects in orthoferrite Yb0.25Tb0.75FeO3 single crystal

YbFeO3 exhibits spin switching (SSW) and spin reorientation transition (SRT) at low temperatures, but its mediocre magnetocaloric properties limit its further applications. As for TbFeO3 showing a large magnetocaloric effect, its SSW is missing. Motivated by this, we chemically put Yb and Tb with a ratio of 1:3 on the rare-earth site. Potential applications of magnetic and magnetocaloric properties are both preserved in one single phase Yb0.25Tb0.75FeO3, which is exceptional among the rare-earth orthoferrites. Spin switching temperature (TSSW) in the field-cooled-cooling mode increases to around 100 K compared with YbFeO3. A novel multiple SSW emerges in the field-cooled-warming mode originating from the complex competing magnetic interactions between Yb/Tb and Fe sublattices. We also addressed the mechanism of spin modification of magnetic ions with temperatures. Arrott plots created from the isothermal magnetization curves demonstrate that SRT is a second-order phase transition. The negative entropy change (refrigeration capacity) vs. temperatures [−∆Sm(RC) vs. T] diagrams indicate that the −∆Sm(RC) are effectively increased compared with YbFeO3 by rare-earth doping. The pronounced magnetic refrigeration performance and SSW effect with a low-field dependence make it promising to be employed in both magnetic sensing and refrigeration devices.