scholarly journals Measurement and Analysis of the Thermal Insulation Effect of the Transition Space of a Building Veranda in the Hot Summer and Cold Winter Zone

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Yanyan Huang ◽  
Weichang Liu
Keyword(s):  
Thermal Insulation ◽  
Cold Winter ◽  
Measurement And Analysis ◽  
Insulation Effect ◽  
Transition Space

scholarly journals Effects of different thermal insulation methods on the nasopharyngeal temperature in patients undergoing laparoscopic hysterectomy: a prospective randomized controlled trial

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Guanyu Yang ◽  
Zefei Zhu ◽  
Hongyu Zheng ◽  
Shifeng He ◽  
Wanyue Zhang ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Primary Outcome ◽  
Controlled Trial ◽  
Laparoscopic Hysterectomy ◽  
Control Group ◽  
Prospective Randomized Controlled Trial ◽  
Warming Blanket ◽  
Group A ◽  
Insulation Effect ◽  
Group B

Abstract Background This study explored the comparison of the thermal insulation effect of incubator to infusion thermometer in laparoscopic hysterectomy. Methods We assigned 75 patients enrolled in the study randomly to three groups: Group A: Used warming blanket; group B: Used warming blanket and infusion thermometer; group C: Used warming blanket and incubator. The nasopharyngeal temperature at different time points during the operation served as the primary outcome. Results The nasopharyngeal temperature of the infusion heating group was significantly higher than that of the incubator group 60 min from the beginning of surgery (T3): 36.10 ± 0.20 vs 35.81 ± 0.20 (P<0.001)90 min from the beginning of surgery (T4): 36.35 ± 0.20 vs 35.85 ± 0.17 (P<0.001). Besides, the nasopharyngeal temperature of the incubator group was significantly higher compared to that of the control group 60 min from the beginning of surgery (T3): 35.81 ± 0.20 vs 35.62 ± 0.18 (P<0.001); 90 min from the beginning of surgery (T4): 35.85 ± 0.17 vs 35.60 ± 0.17 (P<0.001). Regarding the wake-up time, that of the control group was significantly higher compared to the infusion heating group: 24 ± 4 vs 21 ± 4 (P = 0.004) and the incubator group: 24 ± 4 vs 22 ± 4 (P = 0.035). Conclusion Warming blanket (38 °C) combined infusion thermometer (37 °C) provides better perioperative thermal insulation. Hospitals without an infusion thermometer can opt for an incubator as a substitute. Trial registration This trial was registered with ChiCTR2000039162, 20 October 2020.

Thermal insulation effect of green façades based on calculation of heat transfer and long wave infrared radiative exchange

Measurement ◽  
2021 ◽  
pp. 110555
Author(s):  
Ratih Widiastuti ◽  
Juliana Zaini ◽  
Wahyu Caesarendra ◽  
Georgios Kokogiannakis ◽  
Siti Nurul Nadia Binti Suhailian
Keyword(s):  
Heat Transfer ◽  
Thermal Insulation ◽  
Long Wave ◽  
Insulation Effect ◽  
Long Wave Infrared ◽  
Radiative Exchange

Research and simulation analysis of thermal performance and hygrothermal behavior of timber-framed walls with different external thermal insulation layer: Cork board and anticorrosive pine plate

2020 ◽  
pp. 174425912093672
Author(s):  
Haiyan Fu ◽  
Yewei Ding ◽  
Minmin Li ◽  
Yu Cao ◽  
Wenbo Xie ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Thermal Performance ◽  
Simulation Analysis ◽  
Living Environment ◽  
Wall Structure ◽  
Cold Winter ◽  
Winter Climate ◽  
Hygrothermal Behavior ◽  
Building Wall ◽  
Mold Spore

In order to improve the comfort of the living environment, the thermal performance and temperature–humidity regulation of the exterior walls of two timber-framed structure buildings is theoretically calculated and experimentally studied in this study. Both of the two buildings are located in Nanjing, China, the hot-summer and cold-winter zone. Then WUFI is used to simulate and predict the changes of temperature, relative humidity, and water content of the two timber-framed structure buildings, to strengthen the theoretical analysis of the thermal and humidity coupling of the external walls, and to propose an optimal design scheme for the insulation and temperature and humidity regulation of the external walls. The main results show that the tested thermal conductivity is basically consistent with the predicted value, which prove that WUFI simulation can effectively predict the thermal insulation performance of the external wall. The two timber-framed structure buildings are both suitable for the cold areas, and the reasonable optimization of the design of the structure is the key to the insulation of the building wall. Timber-framed structure is proved to have good temperature–humidity regulation effect. The moisture content of the two timber-framed structure buildings is stable, and the annual temperature and winter humidity are within the appropriate humidity range, which indicates that the wall design is suitable for Nanjing hot-summer and cold-winter climate zone. Four types of wall structure indoor mold spore germinations are less likely, which is not easy to produce the mold. The above research aims to optimize the design of the energy-saving wall of the timber-framed structure and create a comfortable and healthy living environment.

scholarly journals Foundation Research on Physicochemical Properties of Mine Insulation Materials

Coatings ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 355
Author(s):  
Chuanbin Hou ◽  
Song Xin ◽  
Long Zhang ◽  
Shangxiao Liu ◽  
Xiao Zhang
Keyword(s):  
Compressive Strength ◽  
Thermal Insulation ◽  
Test Specimen ◽  
Heat Insulation ◽  
Mining Industry ◽  
Basalt Fiber ◽  
High Strength ◽  
Superior Performance ◽  
Insulation Materials ◽  
Insulation Effect

The known cooling methods for the high-temperature operating environment of a mine mainly include ventilation, refrigeration, heat insulation, and individual protection. Among them, the superior performance and wide application of the heat insulation materials have attracted the attention of the coal mining industry. In this paper, three types of mineral insulation materials were prepared using basalt fiber, glass fiber, vitrified microbeads in combination with cement, sand, high-strength ceramsite, water, etc. In addition, the thermal conductivity and compressive strength of the prepared specimens were assessed. The results show that the test specimen containing basalt fiber had a great thermal insulation effect and achieved the required compressive strength. Furthermore, according to the COMSOL simulation results, the test specimen containing basalt fiber had a better thermal insulation effect than the ordinary concrete materials. Therefore, the research results of this article have guiding significance to search for new mine thermal insulation materials.

Research of Appropriateness of Residence Outer Wall Thermal Insulating System in New Rural Construction in Zhejiang

2012 ◽  
Vol 461 ◽  
pp. 237-240 ◽  
Author(s):  
Yan Zhu ◽  
Jian Ge ◽  
Dan Hua Ying
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Outer Wall ◽  
Pilot Program ◽  
Cold Winter ◽  
Broad Applicability ◽  
Thermal Insulating ◽  
Energy Consumptions ◽  
Rural Construction ◽  
New Rural Construction

Buildings have consumed around 1/4-1/3 of the country’s energy consumptions, of which the envelope structures, especially the outer walls, takes the largest percentage. The pilot program for external thermal insulation in new rural construction has commenced along with full implementation of outer wall energy saving and thermal insulation in Hot Summer and Cold Winter Zone. The program has proved the thermal insulating technology which is characterized by broad applicability, strong operability, reliable thermal insulating performance and low comprehensive cost, is a set of thermal insulating technology compatible with the level of rural economic and technical development in China.

scholarly journals Investigation of the Insulation Effect of Thermal Insulation Layer in the Seasonally Frozen Region Tunnel: A Case Study in the Zuomutai Tunnel, China

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Pengyu Zhao ◽  
Jianxun Chen ◽  
Yanbin Luo ◽  
Lijun Chen ◽  
Yao Li ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Air Temperature ◽  
Ground Surface ◽  
Maximum Temperature ◽  
Insulation Layer ◽  
Tunnel Length ◽  
Maximum Temperature Difference ◽  
Insulation Effect ◽  
Two Sides

In this study, a field temperature test was performed to reveal the insulation effect of the thermal insulation layer installed at lining surface. The thermal insulation layer is made of polyphenolic, and the thickness is 7 cm. According to the test results, the temperature of the thermal insulation layer and lining continuously changes with the air temperature in the tunnel in an approximately trigonometric function. The temperature of tunnel lining without thermal insulation layer is close to the air temperature, which results in the lining frost in winter. The maximum temperature difference between the two sides of the thermal insulation layer can be 27°C. In the section whose buried depth is more than 11.4 m, the temperature of lining with thermal insulation layer in winter is mainly influenced by the cold air in the tunnel. When the monthly mean and lowest daily mean air temperature are lower than −10°C and −14.3°C in the coldest month, the temperature at the inner side of the thermal insulation layer is below 0°C. When the buried depth is less than 11.4 m, the temperature of lining is also influenced by the low temperature at ground surface. The temperature of lining is lower. The thicker thermal insulation layer and even active heat measure are needed. Therefore, the design of thermal insulation layer thickness should consider the air temperature distribution and tunnel buried depth along the tunnel length.

Infrared Probes Based on Nitrile-Derivatized Prolines: Thermal Insulation Effect and Enhanced Dynamic Range

2013 ◽  
Vol 4 (13) ◽  
pp. 2105-2110 ◽  
Author(s):  
Kwang-Hee Park ◽  
Jonggu Jeon ◽  
Yumi Park ◽  
Soyoung Lee ◽  
Hyeok-Jun Kwon ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Dynamic Range ◽  
Insulation Effect ◽  
Infrared Probes

scholarly journals Design and Validation of Thermal Insulation for Deep-sea Fluid Sampler of Jiaolong Human Occupied Vehicle

2021 ◽  
Vol 2095 (1) ◽  
pp. 012070
Author(s):  
Kaiben Yu ◽  
Le Zong ◽  
Shengqi Yu ◽  
Qingjian Meng ◽  
Baohua Liu
Keyword(s):  
Experimental Study ◽  
Thermal Insulation ◽  
Deep Sea ◽  
Silica Aerogel ◽  
Simulation Analysis ◽  
Maximum Temperature ◽  
Vehicle Simulation ◽  
Variation Characteristics ◽  
Insulation Effect ◽  
Insulation Performance

Abstract In this paper, a thermal insulation structure with silica aerogel felt as filler material was designed for the requirements of deep-sea fluid thermal insulation sampling technology for Jiaolong human occupied vehicle. Simulation analysis of thermal insulation performance was carried out and an experimental prototype was developed for the thermal insulation structure. Experimental study on thermal insulation performance was conducted with the variation characteristics of the operation environment for Jiaolong human occupied vehicle being taken into account. Results show that the silica aerogel felt with a thickness of 30 mm filled in the radial space between the inner and outer cylinders can achieve the expected thermal insulation effect during the diving-sampling-transferring process, with maximum temperature rise of 8.5 °C, and can meet the requirements of deep-sea fluid thermal insulation sampling technology.

scholarly journals Effects of Different Thermal Insulation Methods on Nasopharyngeal Temperature in Patients Undergoing Laparoscopic Hysterectomy: A Prospective Randomized Controlled Trial

2020 ◽  
Author(s):  
Guanyu Yang ◽  
Zefei Zhu ◽  
Hongyu Zheng ◽  
Shifeng He ◽  
Wanyue Zhang ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Primary Outcome ◽  
Controlled Trial ◽  
Laparoscopic Hysterectomy ◽  
Control Group ◽  
Prospective Randomized Controlled Trial ◽  
Warming Blanket ◽  
Group A ◽  
Insulation Effect ◽  
Group B

Abstract Background: The purpose of this study was to compare the thermal insulation effect of incubator and infusion thermometer in laparoscopic hysterectomy.Methods: 75 patients were enrolled and were assigned randomly to three groups: group A used warming blanket, group B used warming blanket and infusion thermometer, group C used warming blanket and incubator. The primary outcome was nasopharyngeal temperature at different time points during the operation.Results: The nasopharyngeal temperature of the infusion heating group was significantly higher than that of the incubator group 60min at the beginning of surgery(T3):36.10±0.20 vs 35.81±0.20(P＜0.001)；90min at the beginning of surgery(T4):36.35±0.20 vs 35.85±0.17(P＜0.001),and the incubator group was significantly higher than that of the control group 60min at the beginning of surgery(T3):35.81±0.20 vs 35.62±0.18(P＜0.001);90min at the beginning of surgery(T4):35.85±0.17 vs 35.60±0.17(P＜0.001).The wake-up time of the control group was significantly higher than that of the infusion heating group: 23.88±3.86 vs 20.56±3.80(P=0.004), and the incubator group:23.88±3.86 vs 21.52±4.02(P=0.035).Conclusion: Warming blanket (38°C) combined infusion thermometer (37°C) provides better perioperative thermal insulation, and in hospitals without infusion thermometer, an incubator can be used as a substitute.Trial registration: This trial was registered with http://www.chictr.org.cn/index.aspx,ChiCTR2000039162,20 October 2020.

Sign in / Sign up

Export Citation Format

Share Document