DEVELOPMENT of SIMULATION PROGRAM for REGIONAL ENERGY and ENVIRONMENT MANAGEMENT (SPREEM)

A Simulation Program for Regional Energy and Environment Management (SPREEM) has beendeveloped for management throughout the life cycle from planning and design to operation of awide-area energy and environment whose core is DHC (district heating and cooling). Highoperability and easy understanding are required in SPREEM because its target users includedesigners and operations managers.SPREEM was developed as a simulation tool that executes calculation in Excel, and offers the highaccuracy required for management. The system is equipped with most equipment (refrigerators,boilers and pumps) handled as standard in DHC. When the user selects required equipment andinputs the operation conditions, SPREEM can be used to examine the system during design, verifythe equipment performance during test operation, and optimize the operating state during actualoperation.SPREEM analyzes calculations from details to the whole through combinations of temperature, flowrate, gas volume, electric energy and equipment characteristics. Accordingly, the analysis resultsreflect the partial load characteristics of the equipment or the system characteristics related to allequipment, and offer high calculation accuracy. This paper explains the features of SPREEM, theprinciple of calculation using Excel and the tool structure, and then presents a trial calculationexample used also for test run at the end.