Abstract
We have developed an energy-saving operations system featuring remote operation of central monitoring equipment installed in a building. This system applies robotic process automation to remote operation to automatically perform energy-saving operations on behalf of the operations manager. Furthermore, as another feature, the system requires only a local area network to connect to the central monitoring equipment enabling automatic operation to be performed regardless of the specifications of the central monitoring equipment. The items targeted for energy-saving operation by this system are the optimal operation of a heat source system, setting of the supply water temperature of heat source equipment, setting of room temperature, and setting of outside-air intake volume. At present, the operations manager has the role of performing these energy-saving operations, but finding the optimal value for each of these operations is a difficult task. An operations manager, moreover, is responsible for tasks other than facility operations such as maintenance management, so changing optimal settings accurately at regular intervals on an ongoing basis can be quite a burden. This system uses robotic process automation technology, so it is capable of performing all energy-saving operations that can be executed by the central monitoring equipment. We installed this system in a large-scale shopping mall and performed energy-saving operations on outside-air processing units. In this trial, we achieved a 44% reduction in the amount of energy required for outside-air processing and a 47% reduction in CO2 emissions.
Highlights
There are concerns that the present increase in worldwide energy consumption will lead to a depletion of energy resources and facilitate global warming owing to an increase in CO2 emissions
In Japan, energy-saving initiatives driven by energy-saving laws and regional regulations resulted in a 15% reduction in the amount of energy used during the one-year period from April 2017 to March 2018 relative to that of the one-year period from
In response to this issue, we developed a system for automatically performing optimal operations on an hourly basis through the remote control of central monitoring equipment installed in a building
Summary
There are concerns that the present increase in worldwide energy consumption will lead to a depletion of energy resources and facilitate global warming owing to an increase in CO2 emissions. “optimal operation” refers to actions that attempt to make optimal settings with respect to the operation of equipment, devices, and systems and control values. It includes optimal operation of heat source equipment and adjustment of its supply water temperature, adjustment of outside-air intake volume for air conditioning use, and adjustment of air conditioning (room) temperature. Whether optimal operation measures can be achieved despite the view that they are difficult for humans to handle is an issue that should be addressed In response to this issue, we developed a system for automatically performing optimal operations on an hourly basis through the remote control of central monitoring equipment installed in a building. We outline this system and report the results of installing the system in a shopping mall and performing optimal operation by hourly adjustment of outside-air intake volume
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