International Journal of Refrigeration-revue Internationale Du Froid最新文献_第2页

Advanced M-Cycle System for Simultaneous Cooling and Water Desalination

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-10 DOI: 10.1016/j.ijrefrig.2025.03.015

Mohammad Ali Bakhtiari , Mehdi Tohidloo , Mohammad Hassan Saidi , Seyed Mohammadali Hosseinian , Mohsen Mohseni

{"title":"Advanced M-Cycle System for Simultaneous Cooling and Water Desalination","authors":"Mohammad Ali Bakhtiari , Mehdi Tohidloo , Mohammad Hassan Saidi , Seyed Mohammadali Hosseinian , Mohsen Mohseni","doi":"10.1016/j.ijrefrig.2025.03.015","DOIUrl":"10.1016/j.ijrefrig.2025.03.015","url":null,"abstract":"<div><div>Access to safe drinking water and a healthy living environment is essential for human survival. With growing populations and decreasing availability of potable water, producing safe water from non-drinkable sources has become increasingly important. One effective method to achieve this is through water desalination. Among desalination techniques, humidification and dehumidification stand out as simple, low-cost, and portable solutions that do not require advanced equipment. These systems can be integrated with other technologies to fulfill multiple needs. One such integration involves air conditioning systems, where the innovative M-cycle concept has shown great promise. This cycle can cool air to its dew point without humidification and without using environmentally harmful refrigerants – essentially, water acts as the working fluid.</div><div>In this study, an M-cycle-based cooler has been creatively modified to generate fresh water alongside cooling the air, serving both desalination and air conditioning purposes. A comprehensive mathematical model has been developed and solved using finite element methods. The system's heat and mass exchanger has been optimized, and two configurations for its operation have been proposed. A new performance metric, PR (Performance Ratio), has been introduced to assess the system's dual-function efficiency.</div><div>Results indicate that an infiltration rate of 0.3 yields the highest water distillation rate and optimal cooling performance. The proposed design achieves a 9.2% higher gain-output ratio compared to conventional humidification-based desalination systems and offers 50% more cooling capacity than standard M-cycle air conditioning units, while demonstrating up to 8 times greater energy efficiency for desalination.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 295-306"},"PeriodicalIF":3.5,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An evaluation of the performance of a scroll machine in a reversible high-temperature heat pump - organic Rankine cycle system using R1233zd(E) as the working fluid

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-10 DOI: 10.1016/j.ijrefrig.2025.03.013

Rahul Velanparambil Ravindran, Donal Cotter, Christopher Wilson, Ming Jun Huang, Neil J Hewitt

{"title":"An evaluation of the performance of a scroll machine in a reversible high-temperature heat pump - organic Rankine cycle system using R1233zd(E) as the working fluid","authors":"Rahul Velanparambil Ravindran, Donal Cotter, Christopher Wilson, Ming Jun Huang, Neil J Hewitt","doi":"10.1016/j.ijrefrig.2025.03.013","DOIUrl":"10.1016/j.ijrefrig.2025.03.013","url":null,"abstract":"<div><div>A reversible high-temperature heat pump (HTHP) - Organic Rankine cycle (ORC) system can effectively recover industrial waste heat in the lower temperature band (<100 °C). This system can provide upgraded heat in HTHP mode or generate electrical power in ORC mode. For a compact reversible HTHP-ORC system, it is essential to utilise a volumetric machine that can function as both a compressor (HTHP mode) and an expander (ORC mode). This paper presents a performance analysis of an open-drive scroll machine operating in both modes, using R1233zd(E) as the working fluid. Steady-state models developed for this analysis were validated against data from previous experimental tests and subsequently used to evaluate the performance of the scroll compressor/expander under extended operating conditions. The model predictions indicated that the scroll compressor could achieve an overall isentropic efficiency of 73 % (T<sub>sf,ev,in</sub> = 90 °C, N<sub>cp</sub> = 2,000 RPM) and a volumetric efficiency of 92.3 % (T<sub>sf,ev,in</sub> = 90 °C, N<sub>cp</sub> = 2,500 RPM). In expander mode, the overall isentropic efficiencies were lower than in compressor mode, reaching a maximum value of 57.7 %. The results also demonstrated that the scroll machine could produce a gross power output of 1.01 kW (r<sub>p</sub> = 3.6, T<sub>sf,ev,in</sub> = 90 °C) at higher pressure ratios in expander mode.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 321-332"},"PeriodicalIF":3.5,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CFD simulation analysis and visualization experimental study of gas contamination condensation distribution in coaxial pulse tube cryocooler

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-10 DOI: 10.1016/j.ijrefrig.2025.03.016

Jinghao Ma , Bo Shao , Peng Zhao , Zhenhua Jiang , Shaoshuai Liu , Deping Dong

{"title":"CFD simulation analysis and visualization experimental study of gas contamination condensation distribution in coaxial pulse tube cryocooler","authors":"Jinghao Ma , Bo Shao , Peng Zhao , Zhenhua Jiang , Shaoshuai Liu , Deping Dong","doi":"10.1016/j.ijrefrig.2025.03.016","DOIUrl":"10.1016/j.ijrefrig.2025.03.016","url":null,"abstract":"<div><div>Condensable gas contamination is one of important factors limiting the longevity of pulse tube coolers. To further understand the way in which contamination affect the performance of pulse tube cooler, the behavioral characteristics of the contamination inside the pulse tube cooler were investigated. In this study, a 2-D simulation model of the regenerator was developed, and the diffusion and phase change distribution characteristics of the contamination at the cold end were investigated by CFD method. The transition of gas flow and pressure loss caused by the contamination were analyzed. The results show that condensation occurs first in the pulse tube and distribute mainly in the pulse tube and the regenerator eventually. The transition of the gas flow state due to the accumulation of contamination is likely to be an important cause of degradation in the performance of pulse tube cooler. And contamination will accumulate in the flow straightener when the cooling temperature closer to the saturation temperature, which can further affect the state of gas flow in the pulse tube, resulting in higher pressure losses. In addition, based on the technology of neutron radiography, a visualization experiment on the accumulation of contamination in pulse tube cooler was completed, and the experimental results were compared with the simulation results.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 333-342"},"PeriodicalIF":3.5,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143697394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on the relative sliding characteristics of the joint bearings in airborne high-pressure wobble plate compressor

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-10 DOI: 10.1016/j.ijrefrig.2025.03.017

Pengfei Li , Qiang Wang , Yiping Liu , Xin Du , Yuan Lv , Xiufeng Gao , Yun Li

{"title":"A study on the relative sliding characteristics of the joint bearings in airborne high-pressure wobble plate compressor","authors":"Pengfei Li , Qiang Wang , Yiping Liu , Xin Du , Yuan Lv , Xiufeng Gao , Yun Li","doi":"10.1016/j.ijrefrig.2025.03.017","DOIUrl":"10.1016/j.ijrefrig.2025.03.017","url":null,"abstract":"<div><div>Wobble plate compressors are favored in aviation for compactness. The joint bearing on a wobble plate is a critical component of the drive system, but its motion characteristics are complex, and currently lacking a motion model. This study develops a composite motion model for the wobble plate in airborne wobble plate compressors with both bevel gear and roller-straight groove anti-rotation designs, using a microelement method. The result shows that the wobble plate simultaneously rotates around an instantaneous axis within its plane and its normal axis, exhibiting similar behavior in both anti-rotation types with minor deviations below 5 % in angular velocity and 20 % in axis when the inclination angle is less than 25°. The motion characteristics of the joint bearing's ball socket relative to the ball head mirror the wobble plate, with equal rotational velocities and parallel axes. This theoretical model is validated through ADAMS simulations, achieving a high level of accuracy with less than 1.5 % deviation in maximum relative sliding velocity at the selected point in both anti-rotation structures. The research further investigates the influence of compressor rotation speed, wobble plate inclination angle, and joint bearing radius on the maximum relative sliding velocity, revealing an approximately proportional relationship. The area with the maximum time-averaged relative sliding velocity is located near the bottom of the ball socket, suggesting a potential wear hotspot. The experimental observation of morphology confirms this. This research provides a theoretical foundation and technical support for wear analysis and optimized design for joint bearings in wobble plate compressors.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 165-175"},"PeriodicalIF":3.5,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study about spraying the condensate water on the performance of open refrigerated display cabinet

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-10 DOI: 10.1016/j.ijrefrig.2025.03.018

Xueqiang Li , Shiyi Zhang , Shuai Zhang , Zhiang Li , Xianxia Song , Shengchun Liu

{"title":"Experimental study about spraying the condensate water on the performance of open refrigerated display cabinet","authors":"Xueqiang Li , Shiyi Zhang , Shuai Zhang , Zhiang Li , Xianxia Song , Shengchun Liu","doi":"10.1016/j.ijrefrig.2025.03.018","DOIUrl":"10.1016/j.ijrefrig.2025.03.018","url":null,"abstract":"<div><div>Nowadays, the demand for open refrigerated display cabinets (ORDCs) is on the rise, accompanied by a growing urgency to address energy-related challenges. While the recycling of condensate water has been identified as a potential avenue to enhance ORDC performance, the subsequent management of this recycled condensate has garnered insufficient attention. To address this critical gap, this study delves into the influence of spraying condensate water and introduces the critical flowrate - the maximum flowrate at which all condensate water is entirely evaporated. The impact of some key factors, such as the flowrate of condensate water, the nozzle number, the spraying distance, and the ambient temperature and humidity, are experimentally discussed. Results show that, increasing the flowrate of condensate water enhances the ORDC performance until the optimal flowrate is achieved. The critical flowrate is inherently lower than the optimal flowrate. Increasing the nozzle number, spraying distance, and decreasing ambient temperature and humidity, could improve the ORDC performance, and the corresponding critical flowrate could be also increased. The critical flowrate is almost the same for different conditions. For the studied ORDC, the critical flowrate is 32.9 ml/min under which the coefficient of performance (COP), thermal entrainment factor (TEF), and the reduction of compressor power consumption (Q) could be improved by 51.1 %, 33.3 %, and 260.7 W, respectively, compared to that without spraying the condensate water.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 286-294"},"PeriodicalIF":3.5,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An adaptive control method for room air conditioners based on application scene identification and user preference prediction

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-09 DOI: 10.1016/j.ijrefrig.2025.03.008

Haomin Cao , Zhiqiang Zeng , Dawei Zhuang , Guoliang Ding , Yanpo Shao , Hao Zhang , Wenduan Qi , Xiong Zheng

{"title":"An adaptive control method for room air conditioners based on application scene identification and user preference prediction","authors":"Haomin Cao , Zhiqiang Zeng , Dawei Zhuang , Guoliang Ding , Yanpo Shao , Hao Zhang , Wenduan Qi , Xiong Zheng","doi":"10.1016/j.ijrefrig.2025.03.008","DOIUrl":"10.1016/j.ijrefrig.2025.03.008","url":null,"abstract":"<div><div>Room air conditioners are widely used to control indoor air parameters to user preferred values for thermal comfort, but the existing control methods might be uncomfortable due to changeable user preferences or be high-cost due to physiological sensors. The purpose of this study is to develop an adaptive control method for room air conditioners at a low cost. The basic idea is to adopt data mining of operating parameters instead of monitoring by physiological sensors, and the key technology is the control of compressor frequency and indoor unit fan speed based on the application scene of the room air conditioner and the user preferred values of indoor air parameters. During the use of the room air conditioner, the application scene is identified by comparing the probabilities of the room air conditioner being in the sleep scene, work scene, or leisure scene, and the user preferred values are predicted by correcting the group preferred values of users in the same city with the setting records of the user. To ensure the reliability of the control method, the accuracy of application scene identification, user preference prediction, and adaptive control is validated by the data collected from the room air conditioners used in the cities of Shanghai, Guangzhou, Dalian, Wuhan, Chongqing, and Haikou. It is shown that the accuracy of application scene identification, user preferred air temperature prediction and user preferred air velocity prediction is 79 %, 88 %, and 94 %, respectively; indoor air temperatures can be controlled within ±0.5 °C of the set values.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 138-153"},"PeriodicalIF":3.5,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in low-temperature phase change materials for cold chain logistics

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-08 DOI: 10.1016/j.ijrefrig.2025.03.011

Xiang Yun Debbie Soo , Pin Jin Ong , Yee Kiat Zachary Lim , Suxi Wang , Warintorn Thitsartarn , FuKe Wang , Junhua Kong , Rong Ji , Nikodem Tomczak , Beng Hoon Tan , Pei Wang , Jianwei Xu , Xian Jun Loh , Qiang Zhu

{"title":"Recent advances in low-temperature phase change materials for cold chain logistics","authors":"Xiang Yun Debbie Soo , Pin Jin Ong , Yee Kiat Zachary Lim , Suxi Wang , Warintorn Thitsartarn , FuKe Wang , Junhua Kong , Rong Ji , Nikodem Tomczak , Beng Hoon Tan , Pei Wang , Jianwei Xu , Xian Jun Loh , Qiang Zhu","doi":"10.1016/j.ijrefrig.2025.03.011","DOIUrl":"10.1016/j.ijrefrig.2025.03.011","url":null,"abstract":"<div><div>Globalization, expanding trade, and rising living standards have intensified the demand for cold chain logistics by requiring the preservation of unaltered product quality from production to final consumer use. In this regard, maintaining a strict temperature regime during transportation is imperative. Among the solutions, passive cooling using phase change materials (PCMs) has been an important technology for cold chain logistics, due to its reusability, portability, and energy and cost savings. Significant efforts have been directed toward addressing key issues of PCMs such as functionality across different temperature ranges, supercooling, phase separation, poor thermal conductivity, and leakage. We evaluate the recent developments in organic, inorganic, eutectic, and polymer-gel PCM technologies, including PCM properties and performance characterization methods. We also compare the advanced simulations and predictions of PCM performance with the performance of actual products. The insights gathered here will inform researchers on new PCM research avenues, technological strategies, and product formulations.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 232-251"},"PeriodicalIF":3.5,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on defrosting multi outdoor units in turn for air source heat pump using hot gas

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-04 DOI: 10.1016/j.ijrefrig.2025.03.007

Xiang Li, Guoyuan Ma, Tianyu Lu, Lei Gao, Weilai Rong, Yuexuan Gong, Shuxue Xu

{"title":"Experimental study on defrosting multi outdoor units in turn for air source heat pump using hot gas","authors":"Xiang Li, Guoyuan Ma, Tianyu Lu, Lei Gao, Weilai Rong, Yuexuan Gong, Shuxue Xu","doi":"10.1016/j.ijrefrig.2025.03.007","DOIUrl":"10.1016/j.ijrefrig.2025.03.007","url":null,"abstract":"<div><div>To improve the efficiency of air source heat pumps and eliminate the performance degradation caused by frost in winter, a hot gas bypass defrosting experimental platform was built and the hot gas bypass defrosting experiment under different outdoor temperature and different opening degree of hot gas bypass valve were carried out. The results showed that the defrosting of the heat pump evaporator can be completed well by adopting the hot gas bypass defrosting method without interrupting the heat pump heating. At outdoor temperatures of -10 °C, -5 °C and 0 °C, the most appropriate time for heat pump to activate hot gas bypass defrosting were 30 min, 40 min and 50 min, respectively. The corresponding peak value of average heating capacity were 7.96 kW, 10.16 kW, and 12.08 kW, and the heating <em>COP<sub>C</sub></em> values were 3.03, 3.56, and 4.19, respectively. The increase of bypass exhaust volume would shorten the defrosting time but also reduce the heating capacity of the heat pump during the defrosting process. Hence the optimum defrosting start time of the system is different with different bypass valve opening. For the system built by this paper, the 20 % bypass valve opening had the best performance in defrosting, and the optimal defrosting start time was 40 min, during which the average heating capacity and <em>COP<sub>C</sub></em> achieved peak values of 10.16 kW and 3.56, respectively. These results provide a reference for the defrosting design of air source heat pumps.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 76-85"},"PeriodicalIF":3.5,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental study on output characteristics of valved linear compressor under different regulating valve openings

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-04 DOI: 10.1016/j.ijrefrig.2025.03.005

Ran Hu , Xinquan Sha , Shaoshuai Liu , Lei Ding , Zhenhua Jiang , Deping Dong

{"title":"Experimental study on output characteristics of valved linear compressor under different regulating valve openings","authors":"Ran Hu , Xinquan Sha , Shaoshuai Liu , Lei Ding , Zhenhua Jiang , Deping Dong","doi":"10.1016/j.ijrefrig.2025.03.005","DOIUrl":"10.1016/j.ijrefrig.2025.03.005","url":null,"abstract":"<div><div>The valved linear compressor (VLC) plays a critical role in Joule-Thomson (JT) cryocoolers in liquid helium temperatures, with its performance influenced by various loads. To improve output characteristics, it is essential to study the relationship between the VLC and the load. In deep space applications, the JT orifice load is fixed, and takes time to achieve in low temperature. This paper presents a closed platform with a regulating valve to simulate JT loads in room temperature. Experiments are carried out to study the effects of stroke and frequency on the output characteristics of a single-stage VLC with different valve openings. The results show that increasing the valve opening reduces the load, increases mass flow rate and exergy efficiency, slightly decreases pressure ratio, and alters motor efficiency. Either increasing frequency or stroke enhances both the mass flow rate and pressure ratio. Under a load of 2-turn opening(Φ=1E-4 m), the stroke length increases from 0.002 m to 0.008 m, thereby causing the pressure ratio to exceed the reciprocal of the critical pressure ratio (1/λ*=2.04), suppressing growth rate of the mass flow rate from 44.7 % to 2.2 %. This suppression means the rest of the stroke can't play more functions, and it is attributed to choked state of the working medium, which can be identified by comparing experimental and theoretical mass flux values of the VLC. It also suggests that there exists a matching relationship between the compressor and the JT load, offering a basis for the compressor design and the match with JT orifice.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 176-184"},"PeriodicalIF":3.5,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143681027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beyond static accuracy: Exploring the ideal temperature sensor for dynamic DCHE environments

IF 3.5 2区工程技术

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-03-04 DOI: 10.1016/j.ijrefrig.2025.03.006

Chanida Topakham, Atit Koonsrisuk

{"title":"Beyond static accuracy: Exploring the ideal temperature sensor for dynamic DCHE environments","authors":"Chanida Topakham, Atit Koonsrisuk","doi":"10.1016/j.ijrefrig.2025.03.006","DOIUrl":"10.1016/j.ijrefrig.2025.03.006","url":null,"abstract":"<div><div>Temperature and humidity measurements in desiccant-coated heat exchangers (DCHEs) face unique challenges due to rapid transitions between operating modes and varying thermal conditions. The dynamic nature of DCHE operation requires a more comprehensive evaluation of sensor performance. This study evaluates three temperature sensors (K-type thermocouple, PT100, and DS18B20) within a temperature range of 23 °C to 60 °C. Our methodology combined calibration accuracy analysis, dynamic response evaluation through time constant measurements, and uncertainty quantification in actual DCHE operating conditions. Results revealed that while the PT100 sensor showed superior static accuracy, the DS18B20 demonstrated better performance in dynamic conditions, exhibiting the shortest time constant (70–80 s) and lowest uncertainty in humidity measurements (±1 % in dehumidification mode). Our analysis establishes guidelines for handling sensor readings during mode transitions and determines optimal calibration requirements for each sensor type. These findings provide crucial insights for more reliable temperature and humidity measurements in dynamic thermal environments. The results establish new criteria for sensor selection in DCHE applications.</div></div>","PeriodicalId":14274,"journal":{"name":"International Journal of Refrigeration-revue Internationale Du Froid","volume":"174 ","pages":"Pages 86-97"},"PeriodicalIF":3.5,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0