Thermal source instrument controlling device and air-conditioning system

Patent metadata

Field	Value
Publication number	US-9671120-B2
Application number	US-201514643001-A
Country	US
Kind code	B2
Filing date	Mar 10, 2015
Priority date	Mar 12, 2014
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

A thermal source instrument controlling device includes a setting value calculating portion, a change magnitude calculating portion, and a feed water temperature setting portion that corrects, based on change magnitudes for feed water temperatures calculated by the change magnitude calculating portion, setting values for the feed water temperatures for respective thermal source instruments, calculated by the setting value calculating portion, and sets corrected values in the respective thermal source instruments. The change magnitude calculating portion calculates the change magnitudes for the feed water temperatures for the respective thermal source instruments based on temperature change magnitude information included in instruction data, the setting values for the feed water temperatures set for the respective thermal source instruments, flow rates of the cooling/heating water that flows out from the respective thermal source instruments, and weighting coefficients set for individual thermal source instruments.

First claim

The invention claimed is:

1. A thermal source instrument controlling device for controlling a plurality of thermal source instruments that produce cooling/heating water, the thermal source instrument controlling device comprising:
a setting value calculating portion that calculates setting values for feed water temperatures for the cooling/heating water to be produced by the respective thermal source instruments;
a change magnitude calculating portion that calculates change magnitudes for the feed water temperatures of the thermal source instruments based on instruction data for directing a change in temperature of the cooling/heating water to be supplied to a load instrument; and
a feed water temperature setting portion that corrects, based on the change magnitudes for the feed water temperatures calculated by the change magnitude calculating portion, setting values for the feed water temperatures for the respective thermal source instruments, calculated by the setting value calculating portion, and sets the corrected values in the respective thermal source instruments, wherein
the change magnitude calculating portion calculates change magnitudes for the feed water temperatures for the respective thermal source instruments based on temperature change magnitude information included in the instruction data, setting values for the feed water temperatures set for the respective thermal source instruments, flow rates of the cooling/heating water that flows out from the respective thermal source instruments, and weighting coefficients set for the individual thermal source instruments.

2. The thermal source instrument controlling device as set forth in claim 1 , wherein
the setting value calculating portion calculates the setting values so that the temperature of the cooling water to be supplied to the load instrument will approach a target value while suppressing the amount of energy used by the thermal source instruments.

3. The thermal source instrument controlling device as set forth in claim 2 , further comprising:
an evaluating portion that evaluates, based on a difference between a theoretical value for the temperature of the cooling/heating water that flows out from a supply header that mixes the cooling/heating water that flows out from the plurality of thermal source instruments and a measured value for a temperature of the cooling/heating water that flows out from the supply header, whether or not to operate a thermal source instrument that is in standby.

4. An air-conditioning system comprising:
a load instrument that carries out heat exchange of supply cooling/heating water and for blowing air;
a plurality of thermal source instruments that produces cooling/heating water;
a thermal source instrument controlling device that controls the plurality of thermal source instruments; and
a supply header that mixes, and supplies to the load instrument, the cooling/heating water that flows out from the plurality of thermal source instruments, wherein
the thermal source instrument controlling device comprises:
a setting value calculating portion that calculates setting values for feed water temperatures for the cooling/heating water to be produced by the respective thermal source instruments;
a change magnitude calculating portion that calculates change magnitudes for the feed water temperatures of the thermal source instruments based on instruction data for directing a change in temperature of the cooling/heating water to be supplied to a load instrument; and
a feed water temperature setting portion that corrects, based on the change magnitudes for the feed water temperatures calculated by the change magnitude calculating portion, setting values for the feed water temperatures for the respective thermal source instruments, calculated by the setting value calculating portion, and sets the corrected values in the respective thermal source instruments, and wherein

the change magnitude calculating portion calculates change magnitudes for the feed water temperatures for the respective thermal source instruments based on temperature change magnitude information included in the instruction data, setting values for the feed water temperatures set for the respective thermal source instruments, flow rates of the cooling/heating water that flows out from the respective thermal source instruments, and weighting coefficients set for the individual thermal source instruments.

Assignees

• Azbil Corp

Inventors

• Kashima Toru
• Dazai Ryouta

Classifications

• F24F11/46

  Improving electric energy efficiency or saving · CPC title

• F24F11/84 Primary

  using valves · CPC title

• F24F11/64

  using pre-stored data · CPC title

• F24F5/0003

  Exclusively-fluid systems · CPC title

• F24F2140/60

  Energy consumption · CPC title