This article aims to present the feasibility of storing thermal energy in buildings for solar water heating while maintaining the comfort environment for residential buildings.Our contribution is the creation of insul...This article aims to present the feasibility of storing thermal energy in buildings for solar water heating while maintaining the comfort environment for residential buildings.Our contribution is the creation of insulating composite panels made of bio-based phase change materials(bio-PCM is all from coconut oil),cement and renewable materials(treated wood fiber and organic clay).The inclusion of wood fibers improved the thermal properties;a simple 2%increase of wood fiber decreased the heat conductivity by approximately 23.42%.The issues of bio-PCM leakage in the cement mortar and a roughly 56.5%reduction in thermal conductivity with bio-PCM stability in composite panels can be resolved by treating wood fibers with an adjuvant by impregnating them in bio-PCM in the presence of the treated clay generated.Clay and wood fiber were treated with adjuvants that are both biological and environmentally acceptable,as confirmed by FTIR spectroscopy.The heat transfer bench(DIDATEK)showed a decrease in thermal conductivity.By using differential scanning calorimetric(DSC)analysis,the investigation of thermal stability and enthalpy during two heating cycles of pure bio-PCM and composite bio-PCM was validated.The novel renewable material was used to create composite panels for the trial prototype,which took the shape of a component attached to the solar heating system,33.57%less heat was lost,according to the heat transfer research.The outcomes demonstrated the possibility of replacing traditional electric water heating in residential buildings with solar water heating systems.展开更多
聚乙烯(Polyethylene,PE)管道因具有接口稳定、材料抗冲击、抗开裂、耐老化及耐腐蚀等优点,已广泛应用于埋设燃气管道。基于此,首先介绍声波定位法和多频管中电流法(Pipeline Current Mapper,PCM)的基本工作原理,其次分析应用声波定位法...聚乙烯(Polyethylene,PE)管道因具有接口稳定、材料抗冲击、抗开裂、耐老化及耐腐蚀等优点,已广泛应用于埋设燃气管道。基于此,首先介绍声波定位法和多频管中电流法(Pipeline Current Mapper,PCM)的基本工作原理,其次分析应用声波定位法和PCM定位法探测燃气PE管道的优缺点,最后进行案例分析。展开更多
文摘This article aims to present the feasibility of storing thermal energy in buildings for solar water heating while maintaining the comfort environment for residential buildings.Our contribution is the creation of insulating composite panels made of bio-based phase change materials(bio-PCM is all from coconut oil),cement and renewable materials(treated wood fiber and organic clay).The inclusion of wood fibers improved the thermal properties;a simple 2%increase of wood fiber decreased the heat conductivity by approximately 23.42%.The issues of bio-PCM leakage in the cement mortar and a roughly 56.5%reduction in thermal conductivity with bio-PCM stability in composite panels can be resolved by treating wood fibers with an adjuvant by impregnating them in bio-PCM in the presence of the treated clay generated.Clay and wood fiber were treated with adjuvants that are both biological and environmentally acceptable,as confirmed by FTIR spectroscopy.The heat transfer bench(DIDATEK)showed a decrease in thermal conductivity.By using differential scanning calorimetric(DSC)analysis,the investigation of thermal stability and enthalpy during two heating cycles of pure bio-PCM and composite bio-PCM was validated.The novel renewable material was used to create composite panels for the trial prototype,which took the shape of a component attached to the solar heating system,33.57%less heat was lost,according to the heat transfer research.The outcomes demonstrated the possibility of replacing traditional electric water heating in residential buildings with solar water heating systems.
文摘聚乙烯(Polyethylene,PE)管道因具有接口稳定、材料抗冲击、抗开裂、耐老化及耐腐蚀等优点,已广泛应用于埋设燃气管道。基于此,首先介绍声波定位法和多频管中电流法(Pipeline Current Mapper,PCM)的基本工作原理,其次分析应用声波定位法和PCM定位法探测燃气PE管道的优缺点,最后进行案例分析。