초록 ▼

In a multi-unit installation system of fluid heating units such as hot water boilers, an outstandingly superior responsivity to load variations is obtained, and fluid of stable temperature is supplied by preventing useless starts and stops. In a units count control method, a plurality of fluid heati

In a multi-unit installation system of fluid heating units such as hot water boilers, an outstandingly superior responsivity to load variations is obtained, and fluid of stable temperature is supplied by preventing useless starts and stops. In a units count control method, a plurality of fluid heating units (1) are arranged in parallel, these fluid heating units (1) and a load (2) are connected to each other through a fluid supply passage (3) and a fluid return passage (4), and the operated-units count out of the fluid heating units (1) is controlled in response to the load condition, wherein if a fluid supply temperature To in the fluid supply passage (3) is within a preset range, then a current operated-units count is maintained; if the supply temperature To is below the preset range, then the operated-units count is increased; and if the supply temperature To is above the preset range, then the operated-units count is decreased.

대표청구항 ▼

A units control method comprising the steps of: arranging a plurality of temperature changing units in parallel; connecting the temperature changing units to a load through a supply passage and a return passage; and controlling an operated-units count out of the temperature changing units in respons

A units control method comprising the steps of: arranging a plurality of temperature changing units in parallel; connecting the temperature changing units to a load through a supply passage and a return passage; and controlling an operated-units count out of the temperature changing units in response to load conditions, the method further comprising steps of: calculating a operation-permitted units count N out of the temperature changing units according to the following equation; and delivering an operation-permitting signal to the operation-permitted units count N of temperature changing: N=M×(Toset-Ti)/(TB-Ti) where M is a total number of the temperature changing units; Toset is a set temperature in the supply passage; Ti is a return temperature in the return passage; and TB is a set temperature of the temperature changing units.