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    Building Energy Efficiecny

    As we know buildings in Hong Kong account for a significant amount of energy consumption. According to Hong Kong's Electrical and Mechanical Service Department's (EMSD) study, over 90% of electricity is consumed by buildings.

    In 2012, the Hong Kong SAR government enacted the Building Energy Efficiency Ordinance (BEEO) to enhance building energy efficiency and reduce greenhouse gas emissions. We have prepared some references on the concept of energy saving and how to achieve those goals:


    Example of energy saving using inverter control
    • As the speed of the fan or pump is reduced, the flow will reduce proportionally, while the power required by the fan or the pump will reduce with the cube of the speed. This level of potential energy saving makes the use of Variable Speed Drive (VSD) a cost-effective investments in energy efficiency which can be considered for motors.



    • [Energy saving effect and amount of CO2 reduction by inverter drive]
      - Capacity of fan, pump: 30kW
      - Control speed by inverters: 60%

      * Efficiency of fan, pump at 100% operation: 92%

      * Necessary power of damper control: (60% speed = 84% power)
          30kW / 0.92 x 0.84 x 24h x 365days = 239,948kWh

      * Necessary power of inverter control: (60% speed = 21% power)
          30kW / 0.92 x 0.21 x 24h x 365days = 59,987kWh

      * Energy saving effect
          239,948?- 59,987 = 179,961kWh

      * Amount of CO2 reduction
          0.555kg / kWh x 179,961kWh = 99,878kg/year

    Application samples
    Toshiba Inverter Supporting the social infrastructure systems and industrial systems.


    Energy Savings Estimator Program
    • Try using this software program to estimate the electrical engeryfor fan and pump applications when using an AC motor in combination with an inverter drive. The software compares the use of an inverter drive against conventional control methods such as outlet dampers, inlet vanes, throttling valves, etc.... and instantly see the benefits.
      Download

     

     

     

    © 2017 Sunnice Supplies Co., Ltd all rights reserved.

  • 为什么孩子特别不喜欢承认错误?是因为他们没意识到错了吗? 2019-04-20
  • 春夏季养生小常识 饮食一定要注意五多五少-美食资讯 2019-04-11
  • 北京:推租赁型集体宿舍  每房间最多住8人 2019-03-23
  • 简直不要命!男子开车窗偷摸狮子遭狂吼吓破胆 2019-03-21
  • 南京整合科技园区构建4+4+1 主导产业体系 ——凤凰网房产北京 2019-03-21
  • 网上也能搜到各地的房价。北京还有十八万多一平米的房子。 2019-03-19
  • 胆真大,一下子捅了6个“马蜂窝”! 2019-03-19
  • 战果累累的传奇英雄——吴光浩 2019-03-09
  • 台湾西部海域发生5.0级地震 专家称位置罕见 2019-03-09
  • 肥西:居民楼前路面塌出大坑 面积数十平米 2018-12-19
  • 十三届全国人大一次会议在京闭幕 习近平发表重要讲话 2018-12-19