Verification on Matching between Heat Supply of Woody Biomass CHP Facility and Heat Demand-Exit Design of the Local Circulation System

Abstract

As an exit design for a local circulation system (LCS) that utilizes forest resources, the heat demand that matches the heat supply from a small-scale woody biomass combined heat and power (CHP) was evaluated using the exergy utilization rate (Ex). As a result of measuring the amount of CHP power generated and total heat supplied, the amount of CHP heat supplied to the hot spring facility, the amount of heat supplied from the kerosene boiler, the number of bathers, and the outside temperature for one year, at the hot spring facility, the Ex and fossil fuel reduction rates were low due to restrictions on power connection, non-use of CHP heat at night, and high heating load at start-up before business hours. By using CHP heat even at night and using the bathtub as hot water storage, it was possible to reduce fossil fuels at start-up and increase the Ex.