HEAT SOURCE SYSTEM AND NUMBER-OF-MACHINES CONTROL METHOD FOR HEAT SOURCE SYSTEM

摘要

The purpose of the invention is, when introducing a system or increasing the number of heat source machines, to eliminate the need for manual adjustment of a number-of-machines control device, and to enable operation with a high coefficient of performance even when the temperature of a heat source medium changes. A heat source system (1) comprises: a plurality of heat source machines (3) used as hot water heat pumps and connected in parallel; heat source machine control devices (9) provided for the respective heat source machines (3); and a number-of-machines control device (10) for allocating, to the heat source machines (3), a hot water load according to a demanded hot water load. Each heat source machine control device (9) transmits to the number-of-machines control device (10) heat source machine information indicating the maximum hot water load available under the current operating state including the temperature of heat source water, and an optimum operation range, which is a load range in which the COP becomes equal to or greater than a predetermined value in the heat source machine (3) to be controlled. On the basis of the heat source machine information transmitted from each heat source machine control device (9), the number-of-machines control device (10) controls the number of machines and performs the hot water load allocation, such that each heat source machine (3) is operated within the optimum operation range.