Heat Source Selection Using Wastewater Potential Temperature and Heat
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Solution Overview
Problem
Current heat source systems for air-conditioning and other applications primarily rely on atmospheric heat, with limited utilization of available heat sources like sewage and wastewater, which are underutilized as potential energy sources in urban areas.
Innovation Solution
A heat-source selecting device that evaluates and selects heat sources based on potential temperature and heat amounts, prioritizing those with higher potential temperatures for heating and lower for cooling, incorporating unused heat from sewage, river water, groundwater, and wastewater to optimize energy consumption and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple heat sources including sewage and wastewater are introduced into the heat source system, then the range of selectable heat sources expands and energy utilization improves, but the system complexity increases due to the need for heat source selection and management
Solution Approach 1:
The heat source selection device automatically determines potential temperatures and amounts of potential heat for each heat source, then autonomously selects the most suitable heat source based on current system needs, eliminating the need for manual intervention and simplifying operation despite the expanded heat source options
Solution Approach 2:
The system continuously monitors heat source conditions (potential temperature, potential heat amount) and adjusts heat source selection based on this feedback, enabling dynamic optimization of heat source utilization while managing system complexity through automated control
2Use of energy by moving object
If heat sources are selected based on potential temperature alone, then heating efficiency improves, but the system may fail when the amount of potential heat is insufficient
Solution Approach 1:
The selection criteria transitions from considering only potential temperature to evaluating both potential temperature and amount of potential heat, changing the selection parameters to ensure both efficiency and reliability in heat source selection
Solution Approach 2:
The system预先 determines and evaluates the amount of potential heat for each heat source before selection, ensuring that selected heat sources have sufficient heat capacity to meet demand, thus preventing reliability issues before they occur
3Loss of energy
If wastewater from facilities is utilized as a heat source, then energy consumption is reduced by effective heat recovery, but the difficulty of detecting and measuring heat source quality increases
Solution Approach 1:
The system replaces complex manual assessment of heat source quality with automated determination of potential temperature and potential heat amount, substituting mechanical evaluation methods with computational analysis to simplify measurement and detection
Solution Approach 2:
The heat source selection device acts as an intermediary that standardizes the evaluation of diverse heat sources by converting their qualities into comparable parameters (potential temperature, potential heat amount), facilitating uniform assessment across different heat source types
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
Effectively utilizes exhaust heat from facilities as a heat source, reducing energy consumption by selecting the most suitable heat source for heating or cooling purposes, with wastewater proving particularly effective for heating in urban settings, capable of covering up to 20% of heat demand in lodging facilities.
Implementation Method 1
a plurality of heat source units 2a and 2b which can cool or heat a first heating medium by using heat-source water supplied from heat sources
Implementation Method 2
heat exchange is performed between the first heating medium and a second heating medium in some of the heat source units 2b
Data Source
AI summary
A heat source system has a plurality of heat sources that can be utilized therein. The plurality of heat sources include unused heat such as sewage and wastewater generated in a facility in which an external load that receives a supply of heating medium heated or cooled by using the heat sources is installed. A system control device (10) of the heat source system determines potential temperatures and amounts of potential heat of the individual heat sources; and selects heat sources based on the potential temperatures and the amounts of potential heat.