Flow control system

Abstract

A flow control system is capable of quantificationally judging whether there is an energy efficiency problem or not and making an assembling for saving energy to being flexible. A actual flow (QR) of a fluid of a pipeline (13) is measured by an actual flow measurement part (25B). a exceed amount (Delta Q) of each exceed period that the fluid actual flow (QR) exceeds a design flow (QD) is reckonedby a exceed flow reckoning part (25D). A reckoning value (Sigma DeltaQ) of the exceed flow is stored in an exceed flow reckoning value storage part (21) and is displayed in a display part (17). Be means of referring to the reckoning value (Sigma DeltaQ) of the exceed flow, it is capable of knowing that the system is applied by a designed degree or by a degree that departures from a design. Moreover, by means of analyzing the reckoning value (Sigma DeltaQ) of the exceed flow, it is capable of detecting an energy extravagant degree of the system, or detecting whether there is an abnormity.

Description

technical field [0001] The present invention relates to a flow control system for controlling the flow of fluid flowing through a flow path. Background technique [0002] Conventionally, as such a flow control system, there is an air-conditioning control system that controls the flow rate of heat medium (cold and hot water) flowing into an air conditioner (for example, refer to Patent Documents 1 and 2). When constructing this air-conditioning control system, it is necessary to estimate the maximum amount of air-conditioning load (maximum air-conditioning load) in the area to be controlled to supply conditioned air from the air-conditioner, and to select, for example, a device that can eliminate the maximum air-conditioning load. Flow control valves that control the supply of heat source equipment, air conditioners, and cold and hot water from heat source equipment to air conditioners, etc. [0003] Here, if the capacity commensurate with the maximum air-conditioning load i...

AI Technical Summary

Problems solved by technology

[0006] However, in the conventional air-conditioning control system described above, there is a problem in terms of energy efficiency because the selected equipment has a maximum capacity that is somewhat more than the required design capacity.

For example, if the flow control valve has a surplus capacity, when it is intended to control the opening of the flow control valve, the maximum flow rate will flow more than the design flow rate when it is fully opened, and there will be a problem of energy waste.

In the past, there was no mechanism to quantitatively obtain this energy waste, and it was impossible to judge whether there was a problem in energy efficiency, and it was difficult to realize assembly for the purpose of energy saving

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