Boiler Plant Cooling System with Dual-Stage Heat Exchange
Solution Overview
Problem
Existing boiler systems face challenges in effectively managing the temperature of a medium to be cooled, as the heat of the medium is not sufficiently utilized to lower the temperature of the cooling medium, leading to inefficiencies in heat exchange processes.
Innovation Solution
A plant configuration that includes a boiler, a cooler with a thermometer and temperature regulator, and auxiliary heat exchangers to manage the temperature of the medium to be cooled by transferring heat from the medium to the supply-water, while also using external mediums for enhanced heat exchange control, allowing for precise regulation of the medium's temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If heat of the medium to be cooled is used to heat the supply-water in the cooler, then the heat of the medium to be cooled is effectively used, but the temperature of the medium to be cooled cannot be sufficiently lowered
Solution Approach 1:
The cooling system is divided into two independent cooling paths: the first cooler uses supply-water to cool the medium, while the second cooler uses a separate cooling water system to further cool the medium. This segmentation allows each cooler to operate independently to achieve different cooling objectives, enabling sufficient temperature reduction while maintaining heat utilization efficiency.
Solution Approach 2:
A temperature regulator is introduced as an intermediary device between the two coolers. This regulator controls the flow rates of both supply-water and cooling water, coordinating their operation to achieve optimal cooling效果. The temperature regulator acts as a mediator that balances the heat exchange processes to ensure the medium is cooled sufficiently while effectively utilizing available heat resources.
2Device complexity
If the temperature of the medium to be cooled is lowered using only supply-water, then the system is simple, but the range of temperature regulation is limited
Solution Approach 1:
The system achieves multi-functionality by combining two cooling mechanisms: the first cooler handles primary cooling using supply-water, while the second cooler provides additional cooling capacity using cooling water. This universal cooling system can adapt to various temperature regulation needs, expanding the regulation range while maintaining reasonable system complexity through coordinated control.
Solution Approach 2:
The system employs dynamic control through the temperature regulator, which adjusts the flow rates of supply-water and cooling water based on the required temperature regulation range. This dynamic adjustment capability allows the system to adapt to different operating conditions and achieve broader temperature regulation without requiring a completely complex system design.
3Temperature
If the flow rate of supply-water is increased to cool the medium more effectively, then the cooling effect is improved, but the heat exchange efficiency with the boiler is reduced
Solution Approach 1:
The cooling load is segmented between two coolers: the first cooler handles the primary cooling using supply-water at controlled flow rates to maintain heat exchange efficiency, while the second cooler handles additional cooling requirements using cooling water. This segmentation allows the supply-water flow rate to be optimized for heat exchange efficiency while still achieving effective cooling through the combined system.
Solution Approach 2:
The temperature regulator acts as an intermediary that coordinates the flow rates of supply-water and cooling water. It adjusts the supply-water flow rate to maintain optimal heat exchange efficiency with the boiler, while simultaneously activating the cooling water system to provide additional cooling capacity when needed, thus resolving the conflict between cooling effect and heat exchange efficiency.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables effective use of heat from the medium to be cooled, allowing for proper temperature management of the medium, increased efficiency in heat exchange processes, and independent operation of gas and steam turbines.
Implementation Method 1
a cooler configured to transfer heat of the medium to be cooled to supply-water that is the water flowing along the water supply line, and heat the supply-water while cooling the medium to be cooled
Implementation Method 2
the temperature regulator may have an auxiliary heat exchanger that is configured to exchange heat between the medium to be cooled or the supply-water and an external medium
Data Source
AI summary
Provided is a plant that includes: a boiler; a device connected to the boiler; a water supply source that is configured to pool water; a water supply line that supplies water from the water supply source to the boiler; a cooler that transfers heat from a medium to be cooled to supply-water, which is the water flowing along the water supply line; a thermometer that determines a temperature of the medium to be cooled or the supply-water; and a temperature regulator that is configured to regulate the temperature of the medium to be cooled on the basis of the temperature determined by the thermometer.