■除了诊断成像设备,特别是计算机断层扫描(CT)和磁共振成像(MRI),众多的阅读工作站有助于放射科的高能耗。考虑到生态和经济方面,研究了在核心工作时间后关闭工作站是否可以相关地降低能耗。
■除了计算不同的理论能耗方案外,我们测量了我们部门在日常工作条件下的6个月内的3个工作站的功耗,以及另一个要求用户下班后关闭工作站的6个月内的功耗。计算了手动重新启动工作站产生的人员成本。
■我们在核心工作时间后关闭工作站的方法将能耗降低了约5.6%,相当于227个工作站的二氧化碳(CO2)排放量和2100.70美元/年电费的推断节省3.2吨。理论计算表明,在堆芯工作时间后持续自动停机可导致潜在的总能耗降低38.6%,相当于22.2吨二氧化碳和14,388.28美元/年。然而,人工重启工作站后等待时间产生的员工成本将达到36,280.02美元/年。
■在核心工作时间后关闭工作站可以大大降低能耗和成本,但随着用户的坚持而变化。手动启动工作站后等待时间造成的员工成本远远超过了节能。因此,除了启用节能模式外,具有自动关机/重启功能的节能计划将是节省能源和成本的最有效方法。
UNASSIGNED: Besides diagnostic imaging devices, in particular computed tomography (CT) and magnetic resonance imaging (MRI), numerous reading workstations contribute to the high energy consumption of radiological departments. It was investigated whether switching off workstations after core working hours can relevantly lower energy consumption considering both ecological and economical aspects.
UNASSIGNED: Besides calculating different theoretical energy consumption scenarios, we measured power consumption of 3 workstations in our department over a 6-month period under routine working conditions and another 6-month period during which users were asked to switch off workstations after work. Staff costs arising from restarting workstations manually were calculated.
UNASSIGNED: Our approach to switching off workstations after core working hours reduced energy consumption by about 5.6 %, corresponding to an extrapolated saving of 3.2 tons in carbon dioxide (CO2) emissions and 2100.70 USD/year in electricity costs for 227 workstations. Theoretical calculations indicate that consistent automatic shutdown after core working hours could result in a potential total reduction of energy consumption of 38.6 %, equaling 22.2 tons of CO2 and 14,388.28 USD/year. However, staff costs resulting from waiting times after manually restarting workstations would amount to 36,280.02 USD/year.
UNASSIGNED: Switching off workstations after core working hours can considerably reduce energy consumption and costs, but varies with user adherence. Staff costs caused by waiting time after manually starting up workstations outweigh energy savings by far. Therefore, an energy-saving plan with automated shutdown/restart besides enabling an energy-saving mode would be the most effective way of saving both energy and costs.