The concept of ageing society includes the quantitative factor that there will be more and more older people according to population transitions. But, at the same time, qualitative factors such as quality of life, ide...The concept of ageing society includes the quantitative factor that there will be more and more older people according to population transitions. But, at the same time, qualitative factors such as quality of life, identity changes and the experience of high changes in the subjectivity need to be included alongside these quantitative factors. So, the purpose and significance of the paper indicate that is necessary to ensure structures that can tolerate the new scenarios of this current generation of older people, who seek new life options, renewed emotional perspectives and transgenerational confrontation with traditional models of ageing and grandparenthood.展开更多
The relative location of inlets and outlets plays an important role in thermal comfort and energy conservation under ventilation modes for the building non-uniform indoor environment.Hence,a comparison study of therma...The relative location of inlets and outlets plays an important role in thermal comfort and energy conservation under ventilation modes for the building non-uniform indoor environment.Hence,a comparison study of thermal comfort and energy efficiency of eight widely-used ventilation modes for space heating was conducted in this study.Both subjective experiments and verified computational fluid dynamics(CFD)models were carried out.In the subjective experiments,the vote of local thermal sensation(LTS),overall thermal sensation(OTS)and draft sensation were collected.In the CFD simulations,RNG κ-ε model was applied to compare and analyze the air temperature field,turbulence intensity,ventilation effectiveness and air diffusion performance index(ADPI).The thermal comfort results showed that the air inlets are better located at the mid-height level of a wall,and the outlets are located at the same or higher height.While the results of the energy efficiency suggested that the inlets are better installed at the lower level of a wall,and the outlets should be placed far from the inlets.Since the results were conflict,the economic-comfort ratio was introduced to calculate and compare the thermal comfort and energy efficiency simultaneously.The final results concluded that it can achieve excellent thermal comfort performance without sacrificing energy efficiency when the inlets are at the height of 1.2 m of the front wall,and the outlets are at 1.2 m height of the back wall.Hence it is the best choice for the winter air distribution in northern China.This study can offer a guideline for the air terminal arrangements in non-uniform ventilation under heating mode.展开更多
文摘The concept of ageing society includes the quantitative factor that there will be more and more older people according to population transitions. But, at the same time, qualitative factors such as quality of life, identity changes and the experience of high changes in the subjectivity need to be included alongside these quantitative factors. So, the purpose and significance of the paper indicate that is necessary to ensure structures that can tolerate the new scenarios of this current generation of older people, who seek new life options, renewed emotional perspectives and transgenerational confrontation with traditional models of ageing and grandparenthood.
基金This work is supported by the National Natural Science Foundation of China(No.51978231)the Natural Science Foundation of Hebei Province(No.E2019202452)the Hebei Province Funding Project for Returned Overseas Chinese Scholars(No.C20190507).
文摘The relative location of inlets and outlets plays an important role in thermal comfort and energy conservation under ventilation modes for the building non-uniform indoor environment.Hence,a comparison study of thermal comfort and energy efficiency of eight widely-used ventilation modes for space heating was conducted in this study.Both subjective experiments and verified computational fluid dynamics(CFD)models were carried out.In the subjective experiments,the vote of local thermal sensation(LTS),overall thermal sensation(OTS)and draft sensation were collected.In the CFD simulations,RNG κ-ε model was applied to compare and analyze the air temperature field,turbulence intensity,ventilation effectiveness and air diffusion performance index(ADPI).The thermal comfort results showed that the air inlets are better located at the mid-height level of a wall,and the outlets are located at the same or higher height.While the results of the energy efficiency suggested that the inlets are better installed at the lower level of a wall,and the outlets should be placed far from the inlets.Since the results were conflict,the economic-comfort ratio was introduced to calculate and compare the thermal comfort and energy efficiency simultaneously.The final results concluded that it can achieve excellent thermal comfort performance without sacrificing energy efficiency when the inlets are at the height of 1.2 m of the front wall,and the outlets are at 1.2 m height of the back wall.Hence it is the best choice for the winter air distribution in northern China.This study can offer a guideline for the air terminal arrangements in non-uniform ventilation under heating mode.