Integrated system for heating water
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Solution Overview
Problem
Existing water heating systems face inefficiencies in maintaining consistent hot water supply and energy consumption, particularly during varying demand periods and ambient temperature fluctuations.
Innovation Solution
An integrated water heater system utilizing a heat pump, inline heater, and mixing valve to dynamically adjust heating methods based on water and ambient temperatures, along with predictive control algorithms to optimize energy use and supply capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a traditional water heating system is used, then the system structure is simple, but the energy consumption is high and hot water supply consistency is poor
Solution Approach 1:
The system divides water heating into two segments: bulk heating in the storage tank and rapid reheating in the inline heater. This segmentation allows the heat pump to efficiently heat large volumes of water while the inline heater quickly restores temperature during demand, reducing overall energy consumption compared to continuously heating water in traditional systems.
Solution Approach 2:
The system performs preliminary heating in the storage tank before hot water is actually needed. By maintaining a reservoir of pre-heated water, the system avoids the energy waste of heating water on demand in traditional systems, while the predictive algorithm ensures heating occurs at optimal times.
Solution Approach 3:
The system replaces the simple on/off heating mechanism of traditional water heaters with an intelligent control system that uses temperature sensors, flow meters, and predictive algorithms to dynamically adjust heating operations, optimizing energy efficiency while managing system complexity.
2Reliability
If the water tank temperature is maintained high, then hot water availability is improved, but energy consumption increases
Solution Approach 1:
The system uses temperature sensors and flow meters to continuously monitor water temperature and usage patterns, feeding this information back to the controller. This feedback enables the system to maintain hot water availability by triggering the inline heater only when actually needed, rather than continuously maintaining high tank temperature, thus reducing energy consumption.
Solution Approach 2:
Instead of continuous heating, the system employs periodic heating cycles based on detected usage patterns and temperature thresholds. The predictive algorithm anticipates hot water demand and triggers heating periodically rather than continuously, maintaining reliability while reducing energy waste from constant high-temperature maintenance.
3Temperature
If the inline heater is activated frequently, then hot water temperature consistency is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts the activation and power level of the inline heater based on real-time conditions including water temperature, flow rate, and predicted demand. This dynamic control ensures temperature consistency is maintained only when necessary, avoiding unnecessary energy consumption from frequent or prolonged inline heater operation.
Solution Approach 2:
The system changes operational parameters such as the setpoint temperature and heating power level based on detected conditions. By adjusting these parameters dynamically rather than using fixed settings, the system maintains temperature consistency while minimizing energy consumption from the inline heater.
4Use of energy by moving object
If the heat pump is used for water heating, then energy efficiency is improved, but heating speed is reduced
Solution Approach 1:
The system segments the heating function between the heat pump and inline heater. The heat pump handles the energy-efficient bulk heating of water in the storage tank, while the faster inline heater provides rapid temperature restoration during demand. This segmentation allows the system to leverage the energy efficiency of the heat pump without sacrificing hot water availability.
Solution Approach 2:
The storage tank acts as an intermediary between the slow but efficient heat pump and the fast but energy-intensive inline heater. By storing pre-heated water, the tank allows the heat pump to operate at its efficient pace while still providing hot water quickly when needed, mediating between the conflicting speed and efficiency requirements.
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 ensures consistent hot water availability, reduces energy consumption, and increases supply capacity during high-demand periods by leveraging efficient heating elements and adaptive temperature control.
Implementation Method 1
a heat pump arranged within the housing and configured to heat water stored in the water tank
Implementation Method 2
an inline heater arranged within the housing and configured to heat water exiting the water tank
Implementation Method 3
a mixing valve arranged within the housing and configured to combine cold water from the cold water supply of the building with hot water between the water tank and the hot water outlet
Data Source
AI summary
One variation of a method includes, during a first time period preceding a predicted hot water consumption event within a building: triggering a heat pump arranged within a water heater to heat water toward a target supply temperature for water supplied to a building by the water heater; and, at the water heater, supplying water, proximal the target supply temperature, to the building during the hot water consumption event. This variation of the method also includes, during a predicted null hot water consumption window within the building: triggering the heat pump to maintain water stored in the water tank proximal a nominal temperature less than the target supply temperature; and, at the water heater, in response to detecting flow of water from the water heater, triggering an inline heater, arranged within the water heater, to heat water toward the target supply temperature.