Water temperature control method and system

Abstract

The present invention provides, as simply as possible, a system with which it is possible to reduce a heating heat quantity and / or a cooling heat quantity at a delivery source and a heating heat quantity and / or a cooling heat quantity at a use destination. A pure-water temperature control system 1 according to the present invention is provided with: a pure water production plant 10; a pure water utilization plant 20; an outdoor piping 30 for delivering pure water to the pure water utilization plant from the pure water production plant 10; and a delivery source temperature control device 40 forcontrolling the temperature of the delivery source of pure water at a delivery source target temperature. A data processing server 413 constructs a model for predicting a UA value from past meteorological data of the environs of the outdoor piping and operation record data such as water temperature and flow rate, and then calculates a UA prediction value by inputting, to the model, the most recent meteorological data of the environs of the outdoor piping and the most recent operating data. A heating temperature determination device 42 acquires the delivery source target temperature of pure water in accordance with the UA prediction value and a pure-water use destination target temperature. The heating temperature determination device 42 may be a device that is capable of determining boththe heating temperature and the cooling temperature.

Description

technical field [0001] The invention relates to a water temperature control method and system. More specifically, the present invention relates to a delivery system for controlling the temperature of the destination of use (pipe outlet temperature) within a fixed range in a factory in which water treatment facilities and facilities for treating water using the water treatment facilities are different from each other. A method and device for controlling source temperature (piping inlet temperature). Background technique [0002] Conventionally, there has been provided a technique for controlling the temperature of pure water produced by a pure water production device within a fixed range. [0003] For example, Patent Document 1 discloses that in a pure water production method in which raw water whose temperature has been controlled by a heat exchanger is passed through a reverse osmosis membrane separation device to produce pure water, the The raw water in the receiving tan...

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Problems solved by technology

In addition, cooling with the cooler 122 installed in the pure water utilization equipment 120 can also be said to be a waste of energy.

[0013] Even so, if the heating temperature setting value in the steam heater 113 is only lowered from 25.0°C to, for example, 24.5°C, it may not be able to meet the allowable temperature range of the pure water utilization destination.

Although the outdoor piping 130 is wound with insulating material, even so, the temperature of the pure water may decrease by about 1°C due to heat dissipation especially in strong winds. It can be said that lowering the heating temperature setting value in the steam heater 113 is not necessary easy

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