Effective management and maintenance of building equipment can yield more sustainable delivery of building services systems with buildings/facilities.Buildings generally provide habitation,security,comfort and indeed ...Effective management and maintenance of building equipment can yield more sustainable delivery of building services systems with buildings/facilities.Buildings generally provide habitation,security,comfort and indeed habitat for social and recreational activities.All over the world,buildings/facilities play very vital role in the economic development of any nation.Building equipment is classified as refrigerator,pump,lift and escalator systems,HVAC(heat ventilation and air-conditioning)systems,extractor fans as well as water and firefighting equipment among others.In this paper,the roles of maintenance culture within building equipment were examined in pursuit of achieving effective services delivery.More often than not,maintenance of building equipment option is sometimes played down but with emphasis on achieving optimum performance without recourse to striking a balance between the above indices.The paper also examines immediate and remote causes associated with maintenance management practices within building infrastructure systems(equipment)in this investigation.Experts’opinions were sought for their understanding,barriers and commitment of sustainability agenda in pursuit of building equipment maintenance ethics and the way forward.The achievable outcomes from this study demonstrate that optimum services delivery of building equipment relied on efficient management and maintenance culture options as best practices.展开更多
Melon dehusking is often associated with lots of manual labour and stresses.In order to reduce the stress and boredom usually involved in manual dehusking of melon process,a melon dehusking and separation machine was ...Melon dehusking is often associated with lots of manual labour and stresses.In order to reduce the stress and boredom usually involved in manual dehusking of melon process,a melon dehusking and separation machine was designed,constructed and tested for operation as presented in this paper.The melon dehusking machine operates on the principle of attrition/friction as opposed to the use of an impact force in the dehusking chamber for shelling of melon seeds.This principle results in minimum seed breakage thus,reduces the amount of wastage involved in the mechanized processing of the melon seeds oil.Also,this machine architecture consists of a separation chamber which utilizes the air generated from a centrifugal blower in an attempt to separate the broken shells of melon from its whitish inner cotyledon immediately after the dehusking process.Other components of this machine include:the feed hopper,dehusking chamber and the power unit.This melon dehusking machine operates at the optimal dehusking speed of 1,400 rpm,feed rate of 11 kg/hr and a shelling efficiency of about 85%.The effect of the moisture content of melon seeds regarding the shelling performance was considered and the result showed that a soaking time of 8 minutes and a spreading time of 30 minutes yield good optimal dehusking process.展开更多
文摘Effective management and maintenance of building equipment can yield more sustainable delivery of building services systems with buildings/facilities.Buildings generally provide habitation,security,comfort and indeed habitat for social and recreational activities.All over the world,buildings/facilities play very vital role in the economic development of any nation.Building equipment is classified as refrigerator,pump,lift and escalator systems,HVAC(heat ventilation and air-conditioning)systems,extractor fans as well as water and firefighting equipment among others.In this paper,the roles of maintenance culture within building equipment were examined in pursuit of achieving effective services delivery.More often than not,maintenance of building equipment option is sometimes played down but with emphasis on achieving optimum performance without recourse to striking a balance between the above indices.The paper also examines immediate and remote causes associated with maintenance management practices within building infrastructure systems(equipment)in this investigation.Experts’opinions were sought for their understanding,barriers and commitment of sustainability agenda in pursuit of building equipment maintenance ethics and the way forward.The achievable outcomes from this study demonstrate that optimum services delivery of building equipment relied on efficient management and maintenance culture options as best practices.
文摘Melon dehusking is often associated with lots of manual labour and stresses.In order to reduce the stress and boredom usually involved in manual dehusking of melon process,a melon dehusking and separation machine was designed,constructed and tested for operation as presented in this paper.The melon dehusking machine operates on the principle of attrition/friction as opposed to the use of an impact force in the dehusking chamber for shelling of melon seeds.This principle results in minimum seed breakage thus,reduces the amount of wastage involved in the mechanized processing of the melon seeds oil.Also,this machine architecture consists of a separation chamber which utilizes the air generated from a centrifugal blower in an attempt to separate the broken shells of melon from its whitish inner cotyledon immediately after the dehusking process.Other components of this machine include:the feed hopper,dehusking chamber and the power unit.This melon dehusking machine operates at the optimal dehusking speed of 1,400 rpm,feed rate of 11 kg/hr and a shelling efficiency of about 85%.The effect of the moisture content of melon seeds regarding the shelling performance was considered and the result showed that a soaking time of 8 minutes and a spreading time of 30 minutes yield good optimal dehusking process.
