The construction of relevant standards for building carbon emission assessment in China has just started,and the quantitative analysis method and evaluation system are still imperfect,which hinders the development of ...The construction of relevant standards for building carbon emission assessment in China has just started,and the quantitative analysis method and evaluation system are still imperfect,which hinders the development of low-carbon building design.Therefore,the use of intelligent energy management system is very necessary.The purpose of this paper is to explore the design optimization of low-carbon buildings based on intelligent energy management systems.Based on the proposed quantitative method of building carbon emission,this paper establishes the quota theoretical system of building carbon emission analysis,and develops the quota based carbon emission calculation software.Smart energy management system is a low-carbon energy-saving system based on the reference of large-scale building energy-saving system and combined with energy consumption.It provides a fast and effective calculation tool for the quantitative evaluation of carbon emission of construction projects,so as to realize the carbon emission control and optimization in the early stage of architectural design and construction.On this basis,the evaluation,analysis and calculation method of building structure based on carbon reduction target is proposed,combined with the carbon emission quota management standard proposed in this paper.Taking small high-rise residential buildings as an example,this paper compares and analyzes different building structural systems from the perspectives of structural performance,economy and carbon emission level.It provides a reference for the design and evaluation of low-carbon building structures.The smart energy management system collects user energy use parameters.It uses time period and time sequence to obtain a large amount of data for analysis and integration,which provides users with intuitive energy consumption data.Compared with the traditional architectural design method,the industrialized construction method can save 589.22 megajoules(MJ)per square meter.Based on 29270 megajoules(MJ)per ton of standard coal,the construction area of the case is about 8000 m2,and the energy saving of residential buildings is 161.04 tons of standard coal.This research is of great significance in reducing the carbon emission intensity of buildings.展开更多
An active pipe-embedded building envelope,which is an external wall or roof with pipes embedded inside,was presented.This structure may utilize the circulating water in the pipe to transfer heat or coolth inside direc...An active pipe-embedded building envelope,which is an external wall or roof with pipes embedded inside,was presented.This structure may utilize the circulating water in the pipe to transfer heat or coolth inside directly.This kind of structure is named "active pipe-embedded building envelope" due to dealing with the thermal energy actively inside the structure mass by circulating water.This structure not only deals with thermal energy before the external disturbance becomes cooling/heating load by using the circulating water,but also may use low-grade energy sources such as evaporative cooling,solar energy,and geothermal energy.In the meantime,this structure can also improve the indoor thermal comfort by tempering the internal wall surface temperature variation due to the thermal removal in the mass.This work further presents the thermal performance of this structure under a typical hot summer weather condition by comparing it with that of the conventional external wall/roof with numerical simulation.The results show that this pipe-embedded structure may reduce the external heat transfer significantly and reduce the internal wall surface temperature for improving thermal comfort.This work also presents the effects of the water temperature and the pipe spacing on the heat transfer of this structure.The internal surface heat transfer may reduce by about 2.6 W/m2 when the water temperature reduces by 1 ℃ as far as a brick wall with pipes embedded inside is concerned.When the pipe spacing reduces by 50 mm,the internal wall surface heat flux can also reduce by about 2.3 W/m2.展开更多
https://www.sciencedirect.com/journal/energy-and-buildings/vol/204/suppl/C Volume 204,1 December 2019(1)The heat transfer enhancement of low temperature airflow foam effect in the ice storage charging process,by Zhaol...https://www.sciencedirect.com/journal/energy-and-buildings/vol/204/suppl/C Volume 204,1 December 2019(1)The heat transfer enhancement of low temperature airflow foam effect in the ice storage charging process,by Zhaolei Ding,Zhaoliang Jiang,Jiamin Wang,Ding Wang,Article 109477 Abstract:Phase change cold storage,as an energy-saving application,was widely used in central air-conditioning system of commercial building to fit the intermittent and the changing cooling load.Ice storage with different container structures was developed.展开更多
In the urban residential building stock, a major proportion is constituted by low-rise individual buildings. In addition to cost, quality and duration, energy consumed for the project needs to be accounted in the deci...In the urban residential building stock, a major proportion is constituted by low-rise individual buildings. In addition to cost, quality and duration, energy consumed for the project needs to be accounted in the decision making process. Minimizing the cost of construction without compromising on the architectural and structural requirements is the primary objective of the residential buildings of stake-holders, especially the owners. The choice of structural system and the materials used for construction play a crucial role in this effort. This means that the use of expensive and/or voluminous materials such as cement, steel, masonry etc. is optimized. This could lead to significant reduction in embodied energy as well, if the choice of the structural system is prudently made. In this paper, an attempt has been made to quantify the cost and embodied energy benefits for a low-rise residential building by choosing two different structural systems, namely moment resisting framed (MRF) construction system and the partly load-bearing (PLB) system. The influence of choice of materials, contributing to reduction of cost and/or energy is discussed. It is clearly noticed that, when the structural system is re-configured as a PLB system from the existing MRF system there is significant reduction in cost and embodied energy without changing the architectural form.展开更多
基金supported by“Key Technology Research on Operational Performance Improvement of the Green Building”(2020YFS0060)Key Project of Science and Technology Department of Sichuan Province+2 种基金supported by“Creative VR Teaching and Learning Research Based on‘PBL+’and Multidimensional Collaboration”(JG2021-721)“Reform in the Mode and Practice of Architecture Education with the Characteristics of Geology”(JG2021-672)Education Quality and Teaching Reform Project of Higher Education in Sichuan Province in 2021–2023.
文摘The construction of relevant standards for building carbon emission assessment in China has just started,and the quantitative analysis method and evaluation system are still imperfect,which hinders the development of low-carbon building design.Therefore,the use of intelligent energy management system is very necessary.The purpose of this paper is to explore the design optimization of low-carbon buildings based on intelligent energy management systems.Based on the proposed quantitative method of building carbon emission,this paper establishes the quota theoretical system of building carbon emission analysis,and develops the quota based carbon emission calculation software.Smart energy management system is a low-carbon energy-saving system based on the reference of large-scale building energy-saving system and combined with energy consumption.It provides a fast and effective calculation tool for the quantitative evaluation of carbon emission of construction projects,so as to realize the carbon emission control and optimization in the early stage of architectural design and construction.On this basis,the evaluation,analysis and calculation method of building structure based on carbon reduction target is proposed,combined with the carbon emission quota management standard proposed in this paper.Taking small high-rise residential buildings as an example,this paper compares and analyzes different building structural systems from the perspectives of structural performance,economy and carbon emission level.It provides a reference for the design and evaluation of low-carbon building structures.The smart energy management system collects user energy use parameters.It uses time period and time sequence to obtain a large amount of data for analysis and integration,which provides users with intuitive energy consumption data.Compared with the traditional architectural design method,the industrialized construction method can save 589.22 megajoules(MJ)per square meter.Based on 29270 megajoules(MJ)per ton of standard coal,the construction area of the case is about 8000 m2,and the energy saving of residential buildings is 161.04 tons of standard coal.This research is of great significance in reducing the carbon emission intensity of buildings.
基金Project(51178201) supported by the National Natural Science Foundation of China Project(2011CDB292) supported by the Natural Science Foundation of Hubei Province,China
文摘An active pipe-embedded building envelope,which is an external wall or roof with pipes embedded inside,was presented.This structure may utilize the circulating water in the pipe to transfer heat or coolth inside directly.This kind of structure is named "active pipe-embedded building envelope" due to dealing with the thermal energy actively inside the structure mass by circulating water.This structure not only deals with thermal energy before the external disturbance becomes cooling/heating load by using the circulating water,but also may use low-grade energy sources such as evaporative cooling,solar energy,and geothermal energy.In the meantime,this structure can also improve the indoor thermal comfort by tempering the internal wall surface temperature variation due to the thermal removal in the mass.This work further presents the thermal performance of this structure under a typical hot summer weather condition by comparing it with that of the conventional external wall/roof with numerical simulation.The results show that this pipe-embedded structure may reduce the external heat transfer significantly and reduce the internal wall surface temperature for improving thermal comfort.This work also presents the effects of the water temperature and the pipe spacing on the heat transfer of this structure.The internal surface heat transfer may reduce by about 2.6 W/m2 when the water temperature reduces by 1 ℃ as far as a brick wall with pipes embedded inside is concerned.When the pipe spacing reduces by 50 mm,the internal wall surface heat flux can also reduce by about 2.3 W/m2.
文摘https://www.sciencedirect.com/journal/energy-and-buildings/vol/204/suppl/C Volume 204,1 December 2019(1)The heat transfer enhancement of low temperature airflow foam effect in the ice storage charging process,by Zhaolei Ding,Zhaoliang Jiang,Jiamin Wang,Ding Wang,Article 109477 Abstract:Phase change cold storage,as an energy-saving application,was widely used in central air-conditioning system of commercial building to fit the intermittent and the changing cooling load.Ice storage with different container structures was developed.
文摘In the urban residential building stock, a major proportion is constituted by low-rise individual buildings. In addition to cost, quality and duration, energy consumed for the project needs to be accounted in the decision making process. Minimizing the cost of construction without compromising on the architectural and structural requirements is the primary objective of the residential buildings of stake-holders, especially the owners. The choice of structural system and the materials used for construction play a crucial role in this effort. This means that the use of expensive and/or voluminous materials such as cement, steel, masonry etc. is optimized. This could lead to significant reduction in embodied energy as well, if the choice of the structural system is prudently made. In this paper, an attempt has been made to quantify the cost and embodied energy benefits for a low-rise residential building by choosing two different structural systems, namely moment resisting framed (MRF) construction system and the partly load-bearing (PLB) system. The influence of choice of materials, contributing to reduction of cost and/or energy is discussed. It is clearly noticed that, when the structural system is re-configured as a PLB system from the existing MRF system there is significant reduction in cost and embodied energy without changing the architectural form.
