Point-of-Use Water Heating for Single-Line Plumbing
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Solution Overview
Problem
Traditional plumbing systems with dual pipes for hot and cold water suffer from inefficiencies such as delayed hot water delivery due to residual heat dissipation in long pipes, and risks associated with central tank water heaters, including failure and flood damage.
Innovation Solution
A plumbing system utilizing a single water line with a coiled heating element and thermostat near each fixture, allowing for on-demand heating of water to the desired temperature without mixing with additional water supplies, eliminating the need for central water heaters and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If traditional dual pipe systems with central water heaters are used, then hot water can be provided to fixtures, but the residual water in long pipes loses heat over time causing delayed hot water delivery and energy waste
Solution Approach 1:
The patent divides the centralized water heating system into distributed heating units at each fixture. Instead of one central heater serving all fixtures, each fixture has its own heating element that heats water locally, eliminating the problem of heat loss in long distribution pipes.
Solution Approach 2:
The patent applies local heating quality by placing heating elements directly at each fixture location. This ensures that water is heated only where needed, rather than heating large volumes of water in central pipes that may not be immediately used, thereby reducing energy waste from heat loss.
2Reliability
If tank-type water heaters are used, then hot water storage is provided, but the tanks can fail and leak causing costly flood damage
Solution Approach 1:
The patent removes the large storage tank from the water heating system entirely. By using on-demand heating elements at each fixture, the system eliminates the need for large volumes of stored water, thereby removing the source of potential flood damage while maintaining reliable hot water supply.
Solution Approach 2:
The patent prevents the harmful effect of potential tank failure by not using large storage tanks in the first place. The distributed on-demand heating system provides a safety buffer by eliminating the vulnerability of centralized water storage, thus preventing flood damage before it can occur.
3Reliability
If tankless water heaters are used, then the risks of tank failure are eliminated, but the temperature of residual water in pipes remains problematic especially for fixtures far from the heater
Solution Approach 1:
The patent segments the water heating function to each individual fixture, placing heating elements locally at each outlet. This ensures that water is heated fresh at the point of use, eliminating the temperature degradation problem that occurs in tankless systems where water travels through long pipes from a remote heater.
4Loss of energy
If pipe insulation is implemented to reduce heat loss, then energy efficiency improves, but the cost and complexity of the system increases significantly
Solution Approach 1:
The patent removes the need for extensive pipe insulation by eliminating long hot water distribution pipes. By placing heating elements at each fixture and using on-demand heating, the system minimizes the length of hot water pipes, making insulation unnecessary or minimal while achieving energy efficiency without added complexity.
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 provides immediate hot water delivery and reduces energy costs by heating water only when needed, minimizing the risk of tank failures and flood damage, while maintaining control over water temperature at each fixture.
Implementation Method 1
a coiled heating element surrounding said water pipe
Implementation Method 2
a thermostat, wherein said thermostat is controlled by a user; wherein water travels from said water supply line through said water pipe that is within said coiled heating element
Data Source
AI summary
Plumbing systems utilizing a single pipe with individual heating elements located in close proximity to individual plumbing fixtures. These provide users with the ability to control the temperature of water at the site of the individual fixture without need to mix hot and cold water to obtain a desired temperature.