Heat supply system
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional heat supply systems do not efficiently operate heat source devices based on the specific states of heat utilization devices, leading to suboptimal energy usage and efficiency.
Innovation Solution
A heat supply system with a heat medium return and outward path, and a control device that adjusts the flow state and operates heat source devices such as combined heat and power supply devices and boilers based on temperature detection, prioritizing high-efficiency operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a heat source device with large heat output is operated to immediately heat hot water in the storage tank, then the hot water temperature can be quickly increased, but energy efficiency decreases
Solution Approach 1:
The system dynamically adjusts the operation of heat source devices based on real-time temperature conditions in the storage tank. When the tank temperature is below the first lower limit temperature, the high-efficiency heat source device operates alone. When the temperature is between the first and second lower limit temperatures, both high-efficiency and high-output devices operate together to quickly raise the temperature. This dynamic adjustment allows the system to optimize between heating speed and energy efficiency based on current conditions.
2Use of energy by moving object
If a heat source device with high energy efficiency but small heat output is operated, then energy efficiency is improved, but the heating capability is insufficient when rapid temperature increase is needed
Solution Approach 1:
The system merges the operation of two different heat source devices - a high-efficiency device with small heat output and a high-output device with lower efficiency. When rapid heating is required (when tank temperature is between the two lower limit temperatures), both devices operate simultaneously to combine their heating capabilities. This allows the system to overcome the limited heat output of the high-efficiency device while maintaining overall energy efficiency through coordinated operation.
3Ease of operation
If priority ranks for heat source device operation are set in advance, then the system operation is simplified, but the system cannot adapt to specific states of heat utilization devices
Solution Approach 1:
The system uses temperature detection units to continuously monitor the hot water temperature in the storage tank and provides feedback to the control device. Based on this real-time feedback, the control device automatically adjusts which heat source devices to operate and how to control their output. This feedback mechanism allows the system to adapt to specific utilization device states (such as current tank temperature and heating demands) while maintaining automated operation, resolving the contradiction between simplicity and adaptability.
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
The system efficiently operates heat source devices by utilizing heat from high-efficiency devices first and switching to high-output devices as needed, optimizing energy use and temperature management in heat utilization devices like hot water storage and indoor heating.
Implementation Method 1
a heat exchange unit is provided inside of the tank of the hot water storage device, and by the heat exchange unit exchanging heat between the hot water stored in the tank and the heat medium, the temperature of the hot water being stored inside of the tank is increased
Implementation Method 2
a first heat source device among the plurality of heat source devices is a combined heat and power supply device that generates both heat and electricity
Implementation Method 3
a second heat source device among the plurality of heat source devices is a boiler device that heats the heat medium with combustion heat generated by burning a fuel
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A heat supply system is provided with a first temperature detection unit 46 that detects a first temperature of hot water in a tank 17, and a second temperature detection unit 45 that detects a second temperature of hot water above the first temperature detection unit 46, and when the first temperature is a first lower limit temperature or less, where a temperature increase operation by a combined heat and power supply device CG is permitted, a control device operates the combined heat and power supply device CG and operates flow state adjustment devices 6, 7, 33, and 44 such that a heat medium circulates between the combined heat and power supply device CG and a hot water storage device 16, and when the second temperature is a second lower limit temperature or less, where a temperature increase operation by a boiler device 1 is permitted, the control device operates the boiler device 1 and operates the flow state adjustment devices 6, 7, 33, and 44 such that the heat medium circulates between the boiler device 1 and the hot water storage device 16, the first lower limit temperature being a temperature that is the second lower limit temperature or more.