Heat source system control device

Abstract

A heat source system control device controls a heat source system and has a plurality of heat source units with capacities and/or the load characteristics that are different, a first header which aggregates hot/cold water supplied from the plurality of heat source units, and a header temperature sensor which measures the temperature of the hot/cold water aggregated by the first header. The heat source system control device includes a set temperature memory section storing a set temperature of the hot/cold water in the header, a header temperature detecting section detecting output values from the header temperature sensor, a coefficient of performance memory section storing coefficient of performance information, and a control section performing a control for improving efficiency on the plurality of heat source units based on the respective capacities and/or load characteristics and bringing the temperature of the hot/cold water close to the set temperature.

1 . A heat source system control device configured to control a heat source system having a plurality of heat source units with at least one of different capacities and different load characteristics, a header which aggregates hot/cold water supplied from the plurality of heat source units, and a header temperature sensor which measures a temperature of hot/cold water which is aggregated by the header, the heat source system control device comprising:
 a set temperature memory section storing a set temperature of the hot/cold water in the header;   a header temperature detecting section detecting output values from the header temperature sensor; and   a coefficient of performance memory section storing information, which relates to a coefficient of performance according to a load of each of the plurality of eat source units, as coefficient of performance information,   a control section performing a control in order to improve efficiency of the plurality of heat source units based on respective capacities and/or load characteristics and to bring the temperature of the hot/cold water close to the set temperature,   the control section including an initial load setting section setting, an upper limit value in a range of load in which the coefficient of performance is close to a maximum with regard to the plurality of heat source units based on the coefficient of performance information stored in the coefficient of performance memory section, and   the control section driving each of the plurality of heat sources with the upper limit value.   
     
     
         2 . The heat source system control device according to  claim 1 , wherein
 the control section further includes
 a change necessity determining section which determines whether it is necessary to change values of the load which are set to the plurality of the heat source units, and 
 a load changing section which changes the values of the load when it is determined that change of the values of the load is necessary, and 
   the load changing section changes the values of the load from values which are currently set to another values in the range of load.   
     
     
         3 . The heat source system control device according to  claim 2 , wherein
 the initial load setting section sets the upper limit value for a plurality of predetermined heat source units of the plurality of the heat source units,   the control section further includes a number of driving units adjusting section which adjusts a number of heat source units being driven,   the number of driving units adjusting section drives the heat source units other than the plurality of the predetermined heat source units in a case when the upper limit value is set to each of the plurality of the predetermined heat source units and it is determined that further change of the values of the load is necessary by the change necessity determining section, and   the number of driving units adjusting section stops the plurality of the predetermined heat source units in a case when a lower limit value is set to each of the plurality of the predetermined heat source units and it is determined that further change of the values of the load is necessary by the change necessity determining section.   
     
     
         4 . The heat source system control device according to  claim 1 , further comprising:
 a rated capacity memory section storing information, which relates to a rated capacity of each of the plurality of heat source units, as rated capacity information,   the control section determining the heat source units which are driven or stopped based on the rated capacity information stored in the rated capacity memory section.   
     
     
         5 . The heat source system control device according to  claim 1 , wherein
 the heat source system further has a plurality of pumps which supply the hot/cold water to each of the plurality of heat source units, and   the control section adjusts the temperature of the hot/cold water which is aggregated by the header by controlling a flow amount of the hot/cold water supplied from the plurality of pumps.   
     
     
         6 . The heat source system control device according to  claim 5 , wherein
 the heat source system further has a plurality of outlet temperature sensors which are arranged in a vicinity of respective outlets of the plurality of heat source units and measure outlet temperatures of the hot/cold water which is supplied to the header,   an outlet temperature detecting section, which detects output values from the plurality of outlet temperature sensors, is further provided, and   the control section adjusts the temperature of the hot/cold water in the header by controlling the load of each of the plurality of heat source units and the flow amount of the hot/cold water which is supplied from the plurality of pumps based on the outlet temperature of each of the plurality of heat source units and the flow amount of the hot/cold water which is supplied from each of the plurality of heat source units.   
     
     
         7 . The heat source system control device according to  claim 2 , further comprising:
 a rated capacity memory section storing information, which relates to a rated capacity of each of the plurality of heat source units, as rated capacity information,   the control section determining the heat source units which are driven or stopped based on the rated capacity information stored in the rated capacity memory section.   
     
     
         8 . The heat source system control device according to  claim 2 , wherein
 the heat source system further has a plurality of pumps which supply the hot/cold water to each of the plurality of heat source units, and   the control section adjusts the temperature of the hot/cold water which is aggregated by the header by controlling a flow amount of the hot/cold water supplied from the plurality of pumps.   
     
     
         9 . The heat source system control device according to  claim 3 , further comprising:
 a rated capacity memory section storing information, which relates to a rated capacity of each of the plurality of heat source units, as rated capacity information,   the control section determining the heat source units which are driven or stopped based on the rated capacity information stored in the rated capacity memory section.   
     
     
         10 . The heat source system control device according to  claim 3 , wherein
 the heat source system further has a plurality of pumps which supply the hot/cold water to each of the plurality of heat source units, and   the control section adjusts the temperature of the hot/cold water which is aggregated by the header by controlling a flow amount of the hot/cold water supplied from the plurality of pumps.   
     
     
         11 . The heat source system control device according to  claim 4 , wherein
 the heat source system further has a plurality of pumps which supply the hot/cold water to each of the plurality of heat source units, and   the control section adjusts the temperature of the hot/cold water which is aggregated by the header by controlling a flow amount of the hot/cold water supplied from the plurality of pumps.