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能源与人工环境(英文) 2022年第1期3卷 1-15页

作者： Allan Hawas Amin Al-Habaibeh Future Energy Center(FEC) School of Business Society and EngineeringDepartment of Civil Engineering and Energy SystemsMälardalen UniversitySweden Product Innovation Centre School of ArchitectureDesign and the Built EnvironmentNottingham Trent UniversityNG14FQUK

Energy consumption in urban environment in the EU accounts for about 40%of the total energy consumption,and the majority of this energy is utilised for heating and air conditioning of buildings.Hence the process of insulating and retrofitting of relatively old buildings is essential to enhance the thermal performance and hence contribute to energy and carbon emission reduction.There is a need to enhance people’s engagement and education in relation to such issues to inspire and encourage positive actions and investment from the public.This paper presents an approach of combining a novel training process using a low-cost infrared thermal camera with small scale building model to promote DIY(Do-It-Yourself)infrared survey for the public to evaluate the performance of their own homes in order to identify any issues related to insulation or air leaks from the building envelop to encourage them to take corrective actions.The work included the engagement of 50 people to survey their own homes to capture the technical findings as well as their personal reaction and feedback.The results show that 88%of participants have found the educational session helpful to understand the infrared thermography;and 92%have considered the infrared camera to be an effective tool to indicate location of heat losses.Additionally,90%of participants trust that the thermal camera has helped them to identify insulation defects that cause heat losses in their homes.Moreover,84%believe that the thermal imaging has convinced them to think more seriously about the heat losses of their homes and what they could do to improve that.The experimental thermography surveys have shown that many houses have limitations in terms of thermal insulation which have been identified by the participants.This DIY interaction has provided enhanced public engagement and energy awareness via the use of the technology.The financial issues are also found to be critical,as none of the participants would have done the survey if they had to pay for it.Hence,this paper prov

关键词： Energy Public engagement infrared thermography Insulation Smart phones Energy conservation

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Value of knee skin temperature measured by infrared thermography and soluble intercellular adhesion molecule-1 in the diagnosis of peri-prosthetic knee infection in Chinese individuals following total knee arthroplasty

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Chinese Medical Journal 2014年第17期127卷 3105-3109页

作者： Mumingjiang Yishake Zhou Xindie He Rongxin Department of Orthopedic Surgery Second Affiliated Hospital School of Medicine Zhejiang University Hangzhou Zhejiang 310009 China

Background Total knee arthroplasty （TKA） is a successful and frequently performed procedure in orthopedic surgery.The diagnosis of peri-prosthetic joint infection following TKA remains challenging.The present study estimated the usefulness of knee skin temperature （measured by infrared thermography） and serum soluble intercellular adhesion molecule-1 （slCAM-1） in the diagnosis of post-operative knee peri-prosthetic infection.Methods Patients were divided into three groups：21 patients undergoing uncomplicated TKAs,seven with prosthesis infection,and three undergoing TKA revisions.The serum levels of interleukin-6 （IL-6）,C-reactive protein （CRP）,erythrocyte sedimentation rate （ESR）,and slCAM-1 as well as the local knee skin temperature were measured preoperatively and on Days 1 and 7 and at 1,3,and 6 months post-operatively in Groups 1 and 3.The same parameters were measured in Group 2 at the time of prosthesis infection diagnosis.Results In Group 1,the levels of IL-6,CRP,ESR,and knee skin temperature were significantly elevated post-operatively,but returned to baseline levels within 6 months.The slCAM-1 levels were not significantly different.The mean differential temperature （MDT） and levels of siCAM-1,IL-6,CRP,and ESR differed significantly between Groups 1 and 2.The MDT had returned to normal in Group 3 by 6 months post-operatively.Conclusions Elevations in IL-6,CRP,ESR,and MDT in patients undergoing TKA could be a normal response to surgical trauma,but sustained elevations may be indicative of complications.The knee skin temperature and slCAM-1 may be used as indicators in the diagnosis of knee prosthesis infection following TKA.

关键词： total knee arthroplasty infrared thermography skin temperature infection

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A building unit decomposition model for energy leakage by infrared thermography image analysis

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Frontiers in Energy 2020年第4期14卷 901-921页

作者： Yan SU Fangjun HONG Lianjie SHU Department of Electromechanical Engineering University of MacaoTaipaMacaoChina School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Faculty of Business Administration University of MacaoTaipaMacaoChina

A quantitative energy leakage model was developed based on the thermography image data measured for both external and internal building surfaces.The infrared thermography images of both surfaces of doors,windows,and walls of an office building in the Hengqin Campus of University of Macao were taken at various times in a day for four seasons.The transient heat flux for sample units were obtained based on measurements of the seasonal transient local temperature differences and calculations of the effective thermal conductivity from the multiple-layer porous medium conduction model.Effects of construction unit types,orientations,and seasons were quantitatively investigated with unit transient orientation index factors.The corresponding electric energy consumption was calculated based on the air conditioning system coefficient of performance of heat pump and refrigerator cycles for different seasons.The model was validated by comparing to the electric meter records of energy consumption of the air conditioning system.The uncertainties of the predicted total building energy leakage are about 14.7%,12.8%,12.4%,and 15.8%for the four seasons,respectively.The differences between the predicted electric consumption and meter values are less than 13.4%and 5.4%for summer and winter,respectively.The typical daily thermal energy leakage value in winter is the highest among the four seasons.However,the daily electric energy consumption by the air conditioning system in summer and autumn is higher than that in winter.The present decomposition model for energy leakage is expected to provide a practical tool for quantitative analysis of energy leakage of buildings.

关键词： heat conductivity heat coefficient heat flux infrared thermography thermal image

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Anisotropy of Fatigue Behavior and Tensile Behavior of 5A06 Aluminum Alloy Based on infrared thermography

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Journal of Wuhan University of Technology(Materials Science) 2017年第1期32卷 155-161页

作者：闫志峰张红霞 CHEN Pengda WANG Wenxian Shanxi Key Laboratory of Advanced Magnesium-Based Materials Taiyuan University of Technology030024 TaiyuanChina School of Materials Science and Engineering Taiyuan University of TeehnologyTaiyuan 030024China

The fatigue behavior during high cycle fatigue testing and the tensile behavior of 5A06 aluminum alloy considering the anisotropy were studied.Two types of specimens including longitudinal specimen（parallel to the rolling direction） and transverse specimen（perpendicular to the rolling direction） were prepared.infrared thermography was employed to monitor the temperature evolution during the fatigue and tensile tests.The temperature evolution curves in the two directions were contrastively analyzed.It is found that the temperature evolution during fatigue process possesses four stages：initial temperature rise stage,slow temperature decline stage,rapid temperature rise stage,and finial temperature decline stage.The heat generating mechanisms of the four stages are discussed.Obvious differences can be found between the longitudinal specimen and transverse specimen in fatigue strength and fatigue life.The fatigue strength and fatigue life of longitudinal specimen are higher than those of transverse specimen.During the tensile and fatigue testing process,the fracture temperature in the transverse direction are higher than that in the longitudinal direction.The fatigue strength prediction by means of infrared thermography has a good consistency with that by the traditional method.

关键词： aluminum alloy anisotropy fatigue strength infrared thermography

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The Influence of Age on Blood Flow and Temperature of Acupuncture Points: A Study based on Laser Doppler Flowmetry and infrared thermography

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Clinical Complementary Medicine and Pharmacology 2022年第3期2卷 1-6页

作者： Yajun Zhang Xiaoyu Li Xiaofen He Yongliang Jiang Hantong Hu Jiali Lou Ruijie Ma Yi Liang Xiaomei Shao Jianqiao Fang Department of Neurobiology and Acupuncture Research The Third Clinical Medical CollegeKey Laboratory of Acupuncture and Neurology of Zhejiang ProvinceZhejiang Chinese Medical UniversityHangzhou 310053ZhejiangChina Department of acupuncture and moxibustion The Third Affiliated Hospital of Zhejiang Chinese Medical UniversityHangzhou 310005ZhejiangChina Department of acupuncture and moxibustion First People’s Hospital of Xiaoshan DistrictHangzhou 311203ZhejiangChina

Background:To date,there has been a great lack of investigation on the influence of age on blood flow and temperature of acupoints in specific regions.Objective:This study aimed to determine the association between different age categories and acupoint blood flow/temperature on the forearm.Methods:Acupoint blood flow and temperature were measured in healthy adults of different age categories using laser doppler flowmetry(LDF)and infrared thermography(IRT),respectively.A total of 60 eligible healthy volunteers were divided into the young group,mid age group and old age group.All groups received LDF and IRT examination.Shenmen(HT7),Shaohai(HT3),Taiyuan(LU9)and Chize(LU5)of the Heart and Lung meridians on the forearm were selected as 4 test acupoints.Results:Regarding blood flow of the 4 test acupoints,the PU of Taiyuan(LU9)in the old age group was sig-nificantly different compared with that of the young age group(P0.05).Simi-larly,regarding acupoint temperature of the 4 test sites,the temperature of Shaohai(HT3)in the old age group was significantly different compared with that of the mid age group(P0.05).Conclusion:Age category tends to have notable influence on the blood flow and temperature in specific acupoints in the forearm.Therefore,particular concerns should be taken into consideration regarding the effect of age differences for future studies in this field.Nevertheless,further studies with a large sample size and more test acupoints are needed to further verify current findings.

关键词： Blood flow Temperature Acupuncture point Laser doppler infrared thermography

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Numerical Simulation of Non-destructive Testing of Stainless Steel Composites Plate by infrared thermography

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Journal of Shanghai Jiaotong university(Science) 2011年第3期16卷 333-336页

作者：李国华胡宇方俊雅谷霞英高聚春吴淼 School of Mechanical Electronic & Information Engineering China University of Mining and Technology(Beijing)

The non-destructive testing(NDT)of debonding in stainless steel composites plate(SSCP)is performed by infrared thermography,finite element analysis(FEA)software ANSYS is taken as the simulative tool,and 2D simulative model has been set up to investigate effect of the thickness of coating and/or substrate on the detectibility of debonging in SSCPs.Two parameters,namely the maximum defect temperature difference and defect appearing index,are defined to evaluate the detectivity of defects,and their computational methods and formulas are given respectively.The preliminary changing tendency of the maximum defect temperature difference and defect appearing index with the thickness of coating and/or substrate is found by numerical simulation.

关键词： stainless steel composites plate(SSCP) infrared thermography non-destructive testing(NDT) numerical simulation

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Evaluation tool for the thermal performance of retrofitted buildings using an integrated approach of deep learning artificial neural networks and infrared thermography

能源与人工环境(英文)

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能源与人工环境(英文) 2021年第4期2卷 345-365页

作者： Amin Al-Habaibeh Arijit Sen John Chilton Innovative and Sustainable Built Environment Technologies Research Group(iSBET) Nottingham Trent UniversityUK Department of Architecture and Built Environment University of NottinghamUK

In most countries,buildings are responsible for significant energy consumption where space heating and air conditioning is responsible for the majority of this energy use.To reduce this massive consumption and decrease carbon emission,thermal insulation of buildings can play an important role.The estimation of energy savings following the improvement of a building’s insulation remains a key area of research in order to calculate the cost savings and the payback period.In this paper,a case study has been presented where deep retrofitting has been introduced to an existing building to bring it closer to a Passivhaus standard with the introduction of insulation and solar photovoltaic panels.The thermal performance of the building with its improved insulation has been evaluated using infrared thermography.Artificial intelligence using deep learning neural networks is implemented to predict the thermal performance of the building and the expected energy savings.The prediction of neural networks is compared with the actual savings calculated using historical weather data.The results of the neural network show high accuracy of predicting the actual energy savings with success rate of about 82%when compared with the calculated values.The results show that this suggested approach can be used to rapidly predict energy savings from retrofitting of buildings with reasonable accuracy,hence providing a practical rapid tool for the building industry and communities to estimate energy savings.A mathematical model has been also developed which has indicated a life-long monitoring will be needed to precisely estimate the benefits of energy savings in retrofitting due to the change in weather conditions and people’s behaviour.

关键词： Artificial intelligence Neural networks Building thermal performance Wall insulation infrared thermography Deep retrofitting

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Laser Heating and infrared thermography of Building Materials

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Journal of Building Construction and Planning Research 2021年第3期9卷 223-229页

作者： Aschalew Kassu Carlton Farley III Christina P. Tsoli Department of Mechanical Civil Engineering and Construction Management Alabama A & M University Huntsville AL USA Department of Physics Chemistry and Mathematics Alabama A & M University Huntsville AL USA Department of Chemistry National and Kapodistrian University Athens Greece

In this work, a 532 nm diode CW laser is used to heat samples used as building materials at a 1 meter standoff distance while using an FLIR (Forward-Looking infrared) thermal camera to monitor and record the heating and then cooling of each sample after lasers are switched off. The data is then analyzed using FLIR proprietary software. Since the absorption spectra of materials are unique, using multiple lasers of different wavelengths to simultaneously shine onto the sample at different locations would give enough thermal data to successfully characterize the samples within a reasonable amount of time. The results are very promising for applications involving non-destructive detection and classification of materials.

关键词： infrared thermography NIR Thermal Laser Heating Remote Detection

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A Preliminary Study on Evaluation of Electro-Acupunctural Effect by Using Cortical infrared thermography

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Chinese Journal of Integrative Medicine 1998年第4期4卷 286-289页

作者：张栋王淑友傅卫星

Objective: To explore the possibility of using cortical infrared thermography (CIT) and temperature in studying the principle of acupuncture and moxibustion. Methods: The changes of the cerebral cortical temperature during electro-acupuncture (EA) measured by CIT in twenty cats were observed. By opening the skull before experiments, the cortex of animals was revealed. The distribution of the conical temperature of the awakened animals was studied by AGA infrared thermovision, and the thermograms were analysed by computer. Results: (1) The thermograms of the profile of the cortex could be displayed clearly, the temperature was higher in the ante and lower in post-cortex than that in other regions. (2) No tendency of conical temperature ascending within 30 minutes in cats without EA. (3 ) After EA, the temperature of cortex generally increased by 0.3 to 1.7 degrees centigrade, and 5 min after EA, the increment of temperature was the highest, 10 min after EA, the temperature increment was higher than before EA, but lower than 5 min after EA. The conical temperature recovered 10 min after stopping the stimulation. (4) The temperature increment was more obvious in the regions of ant. ectosylvian, ant. supra-Sylvian and ant. Sylvian than that in other regions. No matter where the site of EA was, every group had its own special region of higher temperature increment. Conclusion: The temperature increased in the cortex were mainly in the somatosensory regions. The extent and position of temperature response of cortex after EA could be displayed with CIT directly by picture. The display of the temperature response could be taken as the indication of the nervous activity. CIT could be used to conduct the studies of the acupuncture and the brain.

关键词： infrared thermography temperature cerebral cortex electro-acupuncture neuro-imaging The project supported by National Natural Science

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Diagnostic Significance of Topical Image of infrared thermography on The Patients with Lumbar Intervertebral Disc Protrusion AComparative Study on 45 Patients with Manipulative Treatment and 65 Normal Control

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Chinese Journal of Integrative Medicine 1999年第3期5卷 176-180页

作者：冯天有赵平梁国跃高跃王书勤刘世杰

Objective: To analyse and explore the diagnostic significance of infrared thermography on the patients with lumbar intervertebral disc protrusion.Methods: Forty-five hospitalized cases under conservative treatment (mainly manipulation) and 65 controls were consecutively selected. Both groups were examined with infrared thermography on lower back and lower extremities as well as physical examination before and after treatment. The study statistically analysed the temperature difference between the involved and healthy parts at different areas; and also compared the variation of the temperature difference after the treatment to the decreasing scores of physical examination afterward. Results: The statistic result showed that the temperature difference between two sides on patient group was significantly higher than those of the control group. The further analysis showed that the temperature difference at posterior femur area in the patients’ group correlated significantly to the severity of clinical signs caused by nerve root irritation.Conclusion: The thermogram was uncertain to the segmental diagnosis of lumbar disc protrusion and could only be considered as a reference in the final diagnosis. Nevertheless, it is helpful to discover the severity of radical signs according to the posterior femoral region of hypo- (hyper-) thermogram.

关键词： infrared thermography lumbar intervertebral disc protrusion manipulation

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