Smart water heater
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Solution Overview
Problem
Residential water heaters often maintain high temperatures when hot water is not in demand, leading to energy wastage and increased utility bills, as they are typically not smartly managed.
Innovation Solution
A system that monitors the occupancy status of a residence and adjusts the water heater temperature accordingly, lowering it during periods of zero occupancy or when the residence is set to 'vacation' mode and raising it before expected occupancy, while maintaining a sanitization temperature and providing energy savings reports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the water heater maintains high temperature continuously, then the water is ready for immediate use and sanitization is ensured, but energy is wasted when hot water is not in demand
Solution Approach 1:
The water heater system dynamically adjusts its operating temperature based on real-time occupancy detection. When occupants are present, the heater maintains high temperature for immediate hot water availability. When no occupants are detected, the system lowers the temperature to reduce energy consumption, thus resolving the contradiction between reliability and energy use.
Solution Approach 2:
The system employs occupancy sensors to provide feedback about the presence of occupants. This feedback loop enables the water heater to automatically adjust its temperature setting - maintaining high temperature when occupants are detected and reducing temperature when the space is unoccupied, thereby balancing hot water availability with energy efficiency.
2Reliability
If the water heater maintains high temperature, then sanitization is ensured, but utility bills increase due to unnecessary heating
Solution Approach 1:
The system dynamically adjusts temperature based on occupancy status. When occupants are present, the water heater maintains sanitization temperatures. When the space is unoccupied, the system reduces heating while periodic maintenance heating ensures continued sanitization capability, thus reducing energy waste without completely compromising sanitization.
Solution Approach 2:
Instead of continuous high-temperature maintenance, the system employs periodic maintenance heating cycles when no occupants are detected. This approach ensures water remains sanitized over time while significantly reducing energy consumption compared to continuous heating, addressing the contradiction between sanitization and energy waste.
3Use of energy by moving object
If the water heater temperature is lowered during vacancy, then energy consumption is reduced, but hot water availability is delayed when occupants return
Solution Approach 1:
The system performs preliminary heating actions by detecting when occupants are approaching or about to return to the space. Upon detecting occupancy return, the water heater proactively increases temperature to ensure hot water is available immediately when needed, thus minimizing the time loss while maintaining energy efficiency during the vacancy period.
Data Source
AI summary
The systems and methods described herein relate to heating ventilation and air conditioning (HVAC) systems and water heating systems in relation to a building and residential automation system. Some embodiments of the systems and methods described herein relate to HVAC systems and water systems in relation to an integration of building or residential automation systems. Specifically, the disclosure relates to maintaining a desirable water temperature for a desirable time period. By reducing unnecessary heating of water, the systems disclosed herein may result in fewer wasted resources and a lower utility bill. In one embodiment, a method for security and/or automation systems may be disclosed. The method may comprise monitoring a status of a water heater and monitoring an occupancy status of a residence. The status of the water heater may adjust, automatically, based at least in part on the monitoring.