Thermal Science and Engineering Progress最新文献_第10页

Effectiveness of mitigation measures for future thermal environments: Comparison between inland and coastal cities in China 未来热环境减灾措施的有效性：中国内陆城市与沿海城市的比较

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102894

Yubei Liu , Satoru Iizuka , Junya Yamasaki , Chika Takatori

{"title":"Effectiveness of mitigation measures for future thermal environments: Comparison between inland and coastal cities in China","authors":"Yubei Liu , Satoru Iizuka , Junya Yamasaki , Chika Takatori","doi":"10.1016/j.tsep.2024.102894","DOIUrl":"10.1016/j.tsep.2024.102894","url":null,"abstract":"<div><div>Cities worldwide are currently facing varying degrees of warming and increased heat-related health risks, which need to be countered by appropriate mitigation measures. This study uses a dynamical downscaling simulation technique to quantitatively assess the differences in future (the 2050s) warming and the effectiveness of various mitigation measures between inland and coastal cities. The air temperatures in the inland city (Zhengzhou, China) and the coastal city (Dalian, China) are predicted to increase by 2.3 °C and 1.8 °C in the 2050s compared to 2015. Residents in Zhengzhou and Dalian are expected to be exposed to “very strong heat stress” for 7 and 5 h of the day, respectively, in the 2050s. The mitigation measures considered include increasing the albedos of building roofs, walls, and ground, introducing green roofs, reducing anthropogenic heat release, and enhancing sea-land breezes. Among the examined measures, increasing roof albedo is found to be the most effective in both Zhengzhou and Dalian, offsetting up to 15–16 % of the air temperature rise and 10–11 % of the Universal Thermal Climate Index (UTCI) rise due to global warming. In addition, implementing a combined measure to enhance sea-land breezes with other measures is recommended for coastal cities; for example, combining with increasing roof albedo up to 0.71 can reduce air temperature by 0.2–0.6 °C and UTCI by 0.3–0.4 °C.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102894"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142426862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

The influence of longitudinal duct profiling on unsteady gas dynamics and the heat transfer of pulsating gas flows in the outlet system of reciprocating-engine 纵向管道剖面对往复式发动机出口系统中脉动气流的非稳态气体动力学和传热的影响

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102977

Leonid Plotnikov

{"title":"The influence of longitudinal duct profiling on unsteady gas dynamics and the heat transfer of pulsating gas flows in the outlet system of reciprocating-engine","authors":"Leonid Plotnikov","doi":"10.1016/j.tsep.2024.102977","DOIUrl":"10.1016/j.tsep.2024.102977","url":null,"abstract":"<div><div>Heat machines based on reciprocating-engines remain in demand in various fields of engineering and technology. Therefore, further research is needed to improve the efficiency, reliability, and environmental friendliness of engines. The thermomechanical improvement of non-stationary processes in outlet systems is an appropriate way to improve engine performance. The purpose of this research is to obtain and analyse the gas-dynamic and heat transfer characteristics of pulsating gas flows in an outlet system with ducts of various designs, using a laboratory model to simulate the outlet process in an engine. Thermal anemometry is used to receive data on the instant velocity values and local heat transfer coefficient of unsteady flows in ducts. The article examines two designs of outlet ducts, namely cylindrical (basic) and conical (with a taper of 0.0225) ducts. Spectral analysis of velocity, pressure and heat transfer coefficient pulsations, assessment of turbulence intensity, and calculation of flow characteristics of pulsating flows were performed to obtain detailed information on gas dynamics in the outlet system. The use of a conical duct (in comparison with a cylindrical one) leads to a slight increase in the turbulence intensity by up to 12 %, a decrease in the heat transfer coefficient by 15–20 %, and a change in volumetric gas flow within ± 7.5 %. Thus, the use of a conical duct will lead to the stabilisation of the flow in the outlet system, improved cleaning of the cylinder from outlet gases, a reduction in thermal stress, and a slight growth in the specific power of engines.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102977"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142433278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Improving vehicle warm-up performance in cold conditions using phase change materials 利用相变材料提高车辆在寒冷条件下的预热性能

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.103003

Juho Lee , Seungchul Woo , Kihyung Lee

{"title":"Improving vehicle warm-up performance in cold conditions using phase change materials","authors":"Juho Lee , Seungchul Woo , Kihyung Lee","doi":"10.1016/j.tsep.2024.103003","DOIUrl":"10.1016/j.tsep.2024.103003","url":null,"abstract":"<div><div>In cold climates, improving vehicle warm-up performance is crucial for reducing emissions and fuel consumption. Traditional methods often fail to efficiently address this issue, particularly during initial cold start periods. This study aims to enhance vehicle warm-up performance in cold conditions using phase change materials (PCMs). A thermal energy storage device was developed using paraffin wax, selected for its high energy density and a melting point of 69.3 °C, integrated with an optimized heat exchanger. Real road driving tests were conducted under urban and highway conditions, with temperatures ranging from −5 to 0 °C, using a 2.2L diesel engine vehicle. The results demonstrated a significant reduction in engine warm-up time by 20–30 %, leading to a decrease in fuel consumption and CO emissions by 365–517 g annually. The thermal energy storage device supplied up to 694.63 kJ of heat energy to the coolant, further improving vehicle efficiency and reducing environmental impact. Furthermore, evaluating PCM-based systems under real-world driving conditions is crucial for validating their practical effectiveness. Real-world variables introduce challenges that help confirm the applicability of PCM-based systems in everyday use. This approach shows potential for enhancing warm-up performance in cold climates without additional fuel consumption, outperforming conventional methods.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 103003"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Heat transfer characteristics of multiple jet impingements using graphene nanofluid for automobile industry application 石墨烯纳米流体在汽车行业应用中的多重喷射冲击传热特性

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102993

Praveen Barmavatu , Sonali Anant Deshmukh , Mihir Kumar Das , Ahmad Arabkoohsar , José Antonio García-Merino , Marco Rosales-Vera , Rolvin Sunil Dsilva , Mangalaraja Ramalinga Viswanathan , Baburao Gaddala , Vineet Singh Sikarwar

{"title":"Heat transfer characteristics of multiple jet impingements using graphene nanofluid for automobile industry application","authors":"Praveen Barmavatu , Sonali Anant Deshmukh , Mihir Kumar Das , Ahmad Arabkoohsar , José Antonio García-Merino , Marco Rosales-Vera , Rolvin Sunil Dsilva , Mangalaraja Ramalinga Viswanathan , Baburao Gaddala , Vineet Singh Sikarwar","doi":"10.1016/j.tsep.2024.102993","DOIUrl":"10.1016/j.tsep.2024.102993","url":null,"abstract":"<div><div>The framework experimentally investigates the application of graphene water Nano fluid nozzles for liquid jet cooling, particularly for internal combustion engine piston cooling. It also explores cooling effectiveness on flat and uneven surfaces (copper, steel, Inconel) with varying thicknesses. Turbulent liquid jets impinge on heated surfaces under constant heat flux using nozzles of different diameters to ensure fully developed flow. Graphene nanofluid concentrations of 0.1%, 0.15%, and 0.2% are compared to water. The impact is analysed for multiple jet arrangements, flow rates, and impingement distances on heat transfer using a combined experimental and numerical approach and findings reveal that higher jet Reynolds numbers, temperature rises, and smaller nozzle-to-plate distances enhance heat transfer. Nanofluid concentration significantly improves heat transfer compared to water, with a maximum increase of 50% at 0.2% concentration. These results inform the optimization of cooling strategies for automotive components, aiding engineers in designing efficient thermal management systems for heat-sensitive vehicle parts.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102993"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Characterization and estimation of specific heat capacity for composite phase change material 复合相变材料比热容的表征与估算

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.103011

Weijie Mao, Siqi Li, Xiaoqing Wang, Xu Guo

{"title":"Characterization and estimation of specific heat capacity for composite phase change material","authors":"Weijie Mao, Siqi Li, Xiaoqing Wang, Xu Guo","doi":"10.1016/j.tsep.2024.103011","DOIUrl":"10.1016/j.tsep.2024.103011","url":null,"abstract":"<div><div>This study describes the preparation of an epoxy resin composite phase change material (ERPCM) for regulating asphalt pavement temperature and measures its specific heat capacity using a self-designed heat flow meter apparatus (HFMA) system in both dynamic and steady state modes. An optimization method for fitting the specific heat capacity curve with a trapezoidal curve is proposed. The error in describing the specific heat capacity during the melting and crystallization processes using the trapezoidal curve accounts for 24.1 % and 34.2 % of that of the rectangular curve, respectively. When the specific heat capacity measured in HFMA steady state mode is used as the input material parameter, the simulated temperature curve has the smallest error, with a root mean square error (RMSE) of 0.63. Numerical simulations based on specific heat capacity curves measured in steady state mode show that the addition of ERPCM can effectively increase the pavement’s minimum temperature by 0.9 °C and decrease the maximum temperature by 1.6 °C. The specific heat capacity characterized by DSC and dynamic mode significantly underestimates the LHTI during the heating phase, by 35.4 % and 11.9 % compared to the steady state mode, respectively.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 103011"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142658078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 reconfigurable architecture for maximizing energy harvesting of thermoelectric generators in non-stationary conditions 在非稳态条件下最大化热电发电机能量收集的可重构架构

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102932

Javier de las Morenas , Rafael Zárate-Miñano , Pablo Fernández-Yáñez , Octavio Armas

{"title":"A reconfigurable architecture for maximizing energy harvesting of thermoelectric generators in non-stationary conditions","authors":"Javier de las Morenas , Rafael Zárate-Miñano , Pablo Fernández-Yáñez , Octavio Armas","doi":"10.1016/j.tsep.2024.102932","DOIUrl":"10.1016/j.tsep.2024.102932","url":null,"abstract":"<div><div>The use of Thermoelectric Generators (TEGs) has proliferated across a multitude of applications for energy harvesting. As more modules are employed to recover greater amounts of energy, the temperature mismatch between them increases. This results in each module operating at a distinct maximum power point, thereby reducing the overall system efficiency. Furthermore, in dynamic applications such as automotive scenarios, the temperatures of the thermoelectric generators are not constant, and the maximum power point accordingly shifts. A fixed architecture is unable to cope with these fluctuating situations. Therefore, this paper introduces a reconfigurable architecture capable of harnessing maximum energy at any given moment, improving energy recovery compared to a fixed architecture. Optimization techniques, lean methodologies, and clustering approaches are employed to efficiently design the reconfigurable TEG, which enables modification of the electrical connections inside the TEG modules and the number of Maximum Power Point Tracking (MPPT) modules. A use case is presented where the reconfigurable TEG is compared with fixed, yet optimized, TEG configurations under mixed driving modes. In this specific case, the results demonstrate that the reconfigurable TEG achieves enhanced performance in dynamic environments with two MPPTs under mixed scenarios, reaching an efficiency of 96.3% and a 0.29% improvement in energy recovery.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102932"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Performance investigation of a thermoelectric generator for vehicle exhaust recovery using graded pore density foam metal 使用分级孔隙密度泡沫金属的汽车尾气回收热电发电机性能研究

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102935

Chenchen Jin , Rui Zhang , Wenlong Yang , Wenchao Zhu , Changjun Xie , Liang Huang , Ying Shi

{"title":"Performance investigation of a thermoelectric generator for vehicle exhaust recovery using graded pore density foam metal","authors":"Chenchen Jin , Rui Zhang , Wenlong Yang , Wenchao Zhu , Changjun Xie , Liang Huang , Ying Shi","doi":"10.1016/j.tsep.2024.102935","DOIUrl":"10.1016/j.tsep.2024.102935","url":null,"abstract":"<div><div>Improving the efficiency of thermoelectric generators (TEGs) used to harness residual heat from automobile exhausts is crucial for their widespread adoption. To enhance fluid heat transfer, the Kelvin tetrahedron model is employed for metal foam, and a multiphysical field model of the thermoelectric generator based on metal foam is established. The effects of inserting metal foam with uniform and gradient pore densities into the heat exchanger on the performance of the TEG are investigated. Experimental verification is conducted by constructing a test bench with dimensions identical to those of the model. The findings suggest that inserting foam metal significantly enhances the output performance of the TEG, resulting in increases in both output power and efficiency as pore density rises. At <em>T</em><sub><em>a</em></sub> = 573 K and <em>m</em><sub><em>a</em></sub> = 30 g/s, the output power of the TEG with inserted 20 PPI foam metal is enhanced by 140.46 %, while the efficiency experiences a remarkable increase of 197.50 % compared to a smooth pipe. Compared to the performance metrics of uniform foam metal, the positive gradient foam metal exhibits a maximum power increase of 7.89 % and a maximum efficiency increase of 34.46 %, along with an average pressure drop reduction of 27.29 %.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102935"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Conjugate heat transfer and fluid flow analysis on printable double-wall effusion cooling with internal topology-optimized TPMS structures 具有内部拓扑优化 TPMS 结构的可打印双壁喷流冷却器的共轭传热和流体流动分析

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102939

Kirttayoth Yeranee, Yu Rao, Chao Xu, Jiajun Xie, Yueliang Zhang

{"title":"Conjugate heat transfer and fluid flow analysis on printable double-wall effusion cooling with internal topology-optimized TPMS structures","authors":"Kirttayoth Yeranee, Yu Rao, Chao Xu, Jiajun Xie, Yueliang Zhang","doi":"10.1016/j.tsep.2024.102939","DOIUrl":"10.1016/j.tsep.2024.102939","url":null,"abstract":"<div><div>Double-wall effusion is a highly efficient cooling technique in modern gas turbine blades. This study uses topology optimization infilled with triply periodic minimal surface structures (TPMS) to design high-performance internal cooling structures, improving cooling effectiveness and mitigating thermal stress for the double-wall channel. The flow, heat transfer, and static structural characteristics of the topology-optimized TPMS model are compared with the results of the smooth and circular pin fin configurations. Results show that the optimized model provides a uniform flow inside the channel and the effusion holes, reducing the jet lift-off and keeping the coolant attached to the effusion wall. Within the blowing ratios of 0.5–1.7, the optimized model improves impingement heat transfer by 9.5 %–12.5 % compared to the pin fin configuration. The averaged overall cooling effectiveness is also 4.2 %–4.6 % with lower pressure loss. The thermal stress and total deformation are evenly distributed and show 22.9 % and 12.0 % lower than the pin fin model. Moreover, a 3D laser scanning microscope and high-resolution CT scan are used to evaluate the manufacturability of the optimized sample, printed by laser powder bed fusion with an actual gas turbine blade scale. The results benefit the fabrication improvement for next-generation gas turbine blades.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102939"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Carbon dioxide evaporation heat transfer coefficient prediction in porous media using Machine learning algorithms based on experimental data 利用基于实验数据的机器学习算法预测多孔介质中的二氧化碳蒸发传热系数

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102929

Mohammad Tarawneh, Rami Al-Jarrah

{"title":"Carbon dioxide evaporation heat transfer coefficient prediction in porous media using Machine learning algorithms based on experimental data","authors":"Mohammad Tarawneh, Rami Al-Jarrah","doi":"10.1016/j.tsep.2024.102929","DOIUrl":"10.1016/j.tsep.2024.102929","url":null,"abstract":"<div><div>The prediction of the internal heat transfer coefficient during evaporation is vital for vapor-compression refrigeration and closed-loop power cycles. Accurate measurements and understanding of CO<sub>2</sub> heat transfer in porous evaporators are essential for optimal system design across various operating conditions. This study utilizes a reference dataset derived from previous experiments that investigated the impact of porous evaporators on CO<sub>2</sub>′s internal heat transfer coefficient under sub-critical conditions, employing gravel sand as the porous medium. The dataset encompasses key factors: gravel sand porosities ranging from 39.8 % to 44.5 %, evaporator inlet pressures between 3700 and 4300 kPa, CO<sub>2</sub> mass flow rates from 10.7x10<sup>-5</sup>–18x10<sup>-5</sup>kg.s<sup>−1</sup>, and porous tube effective diameters spanning 1.53 x10<sup>-3</sup> m. Employing three machine learning techniques (SVM, GPR, OBEM), the study predicts the internal heat transfer coefficient using regression models. The models’ predictions are analyzed and compared to expected values for validation, evaluating their performance using four statistical criteria. Results indicate SVM, GPR, and OBEM models achieved RMSEs of 1.5471, 1.8212, and 3.6978, respectively, while MAE errors were 1.1479, 1.2418, and 2.9787, respectively. Comparison with the dimensional analysis method reveals the effectiveness of the proposed models in accurately predicting internal heat transfer coefficients. The models exhibit low uncertainty and maintain prediction quality on an extended dataset without overfitting concerns. Overall, this research contributes valuable insights for designing heat exchangers and systems in vapor-compression refrigeration and closed-loop power cycles.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102929"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Fast-airflow tumble clothes dryer with small thermoelectric heat pump: Experimental evaluation 带小型热电热泵的快速气流滚筒式干衣机：实验评估

IF 5.1 3区工程技术

Thermal Science and Engineering Progress Pub Date : 2024-10-01 DOI: 10.1016/j.tsep.2024.102960

Philip Boudreaux, Christopher Hall, Kyle R. Gluesenkamp, Steve Karman, Jonathan Willocks, Viral Patel, Anthony Gehl

{"title":"Fast-airflow tumble clothes dryer with small thermoelectric heat pump: Experimental evaluation","authors":"Philip Boudreaux, Christopher Hall, Kyle R. Gluesenkamp, Steve Karman, Jonathan Willocks, Viral Patel, Anthony Gehl","doi":"10.1016/j.tsep.2024.102960","DOIUrl":"10.1016/j.tsep.2024.102960","url":null,"abstract":"<div><div>Residential clothes drying accounts for about 5 % of the total residential-sector energy consumption in the United States. Most dryers use electric resistance heaters to dry clothes and have low efficiencies. Higher-efficiency dryers that use vapor compression heat pumps are expensive and complex and have not gained a large market share in the United States. A novel tumble clothes dryer using a small thermoelectric heat pump with faster airflow than typical dryers is presented in this work. The benchtop performance of the thermoelectric heat pump and high-speed blower are presented, and the development of the prototype dryer is described. The dryer was tested for efficiency and dry time for a range of airflow rates and applied currents to the thermoelectric heat pump. The combined efficiency factor was 5.09–6.29 lb<sub>BDW</sub>/kWh (specific moisture extraction rate of 1.23–1.53 kg<sub>w</sub>/kWh) with 100–138 min dry times for these tests. The measured efficiency was 36 %–68 % greater than the minimum efficiency standard in the United States, and compared with vapor compression heat pump–based clothes dryers, the prototype dryer had less expensive, less complex components and did not use refrigerants. The performance of this small thermoelectric heat pump clothes dryer is also compared with previous iterations of the thermoelectric tumble clothes dryer described in the literature.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"55 ","pages":"Article 102960"},"PeriodicalIF":5.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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