Thermal Science最新文献_第8页

Retraction: Solution of Burgers' equation appears in fluid mechanics by multistage optimal homotopy asymptotic method, doi https://doi.org/10.2298/TSCI23S1087W 用多阶段最优同伦渐近方法求解流体力学中的Burgers方程，doi https://doi.org/10.2298/TSCI23S1087W

IF 1.7 4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230724160e

E. Editorial

引用次数: 0

Optimization analysis of residential space in cold region based on building performance simulation 基于建筑性能模拟的寒区居住空间优化分析

IF 1.7 4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230622187q

Yunpeng Qin, Shifen Li, Yuan Kuang

{"title":"Optimization analysis of residential space in cold region based on building performance simulation","authors":"Yunpeng Qin, Shifen Li, Yuan Kuang","doi":"10.2298/tsci230622187q","DOIUrl":"https://doi.org/10.2298/tsci230622187q","url":null,"abstract":"Purpose-Rural residential buildings in China?s cold areas still have large room for improvement in lighting, energy saving and other aspects due to their own development lag. Design/methodology/approach-Taking Zhaoyuan County residential buildings as an example, the spatial elements of residential buildings are quantified, and the variation intervals of each spatial element are determined based on this. Then the standard model of residential buildings is constructed, and the changing trend and related mechanism of heating energy consumption and natural lighting under the change of residential space elements are discussed. Findings-The results show that: (1) In terms of heating energy saving, there is an obvious optimal solution between the window wall ratio of the south facade and the orientation of residential buildings. (2) In indoor natural lighting, all spatial elements show positive and negative correlation without considering glare. (3) Building depth, eave height and plane girth area ratio are the key variables affecting heating energy consumption. Window to floor ratio, building eave height, building depth and plane aspect ratio are the key variables that affect indoor lighting. Originality/value-The research results can provide reference for the energy-saving construction of residential buildings in cold areas.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68264557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques 利用热分析技术对烟头过滤嘴废弃物热解过程进行热化学转化

IF 1.7 4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci230520153b

Bojana Božilović, B. Janković, Milena Pijovic-Radovanovic, H. Waisi, M. Marinović‐Cincović, S. Krstić, V. Dodevski

{"title":"Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques","authors":"Bojana Božilović, B. Janković, Milena Pijovic-Radovanovic, H. Waisi, M. Marinović‐Cincović, S. Krstić, V. Dodevski","doi":"10.2298/tsci230520153b","DOIUrl":"https://doi.org/10.2298/tsci230520153b","url":null,"abstract":"Thermo-chemical conversion of cigarette butt filters (CBFs) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- and thermophysical properties of waste material were discussed, from the point of view of chemical structure and the influence of experimental parameters on the conversion process. It was established that acetyl groups of plasticizer (triacetin, TAC) interact with cellulose acetate (CAc) through dipolar interactions and hydrogen bonding?s. Influence of these polar interactions can affect the position of glass transition temperature (Tg) of CBF. Based on estimated value of Tg from DSC analysis, it was found that CAc present in CBF has degree of substitution (DS) equals to 2.8 (DS = 2.8), where the presence of cellulose triacetate (CTA) was confirmed. It was assumed that an increase of DS leads to decline in the crystallinity. A decline of crystallinity causes the reduction of hydroxyl groups, leading to less organized chains, and whereby decreasing of inter-molecular interactions through hydrogen bonding. Based on the examination of thermophysical characteristics of the tested material, it was found that both, the heat capacity and the thermal inertia (TI) of material linearly increase with temperature, during pyrolysis progression. It was concluded that the type of bio-char produced in this process would have a large capacity to store the heat, which may depend on the formed particles size diameter and porosity. Furthermore, it was inferred that magnitude drops of thermal conductivity (?) after Tg depends on the material fibrillation.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68264624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 efficient matrix method for coupled systems of variable fractional order differential equations 变分数阶微分方程耦合系统的有效矩阵法

IF 1.7 4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci23s1195s

K. Shah, Bahaaeldin Abdalla, T. Abdeljawad, I. Suwan

{"title":"An efficient matrix method for coupled systems of variable fractional order differential equations","authors":"K. Shah, Bahaaeldin Abdalla, T. Abdeljawad, I. Suwan","doi":"10.2298/tsci23s1195s","DOIUrl":"https://doi.org/10.2298/tsci23s1195s","url":null,"abstract":"We establish a powerful numerical algorithm to compute numerical solutions of coupled system of variable fractional order differential equations. Our numer?ical procedure is based on Bernstein polynomials. The mentioned polynomials are non-orthogonal and have the ability to produce good numerical results as compared to some other numerical method like wavelet. By variable fractional order differentiation and integration, some operational matrices are formed. On using the obtained matrices, the proposed coupled system is reduced to a system of algebraic equations. Using MATLAB, we solve the given equation for required results. Graphical presentations and maximum absolute errors are given to illustrate the results. Some useful features of our sachem are those that we need no discretization or collocation technique prior to develop operational matrices. Due to these features the computational complexity is much more reduced. Further, the efficacy of the procedure is enhanced by increasing the scale level. We also compare our results with that of Haar wavelet method to justify the useful?ness of our adopted method.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68265309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Structure of the analytic solutions for the complex non-linear (2+1)-dimensional conformable time-fractional Schrödinger equation by 复杂非线性(2+1)维适形时间分数Schrödinger方程解析解的结构

IF 1.7 4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci23s1211m

A. Mahmud, T. Tanriverdi, K. A. Muhamad, H. Baskonus

引用次数: 0

Optimizing transportation cost for biomass supply chain 生物质供应链运输成本优化

IF 1.7 4区工程技术

Thermal Science Pub Date : 2023-01-01 DOI: 10.2298/tsci23s1245k

S. Kousar, N. Sangi, N. Kausar, P. Agarwal, E. Ozbilge, Alper Bulut

引用次数: 0

A novel numerical manner for non-linear coupled variable order reaction-diffusion equation 非线性耦合变阶反应扩散方程的一种新的数值解法