Pool and Spa Heater Scheduling for Timed Water Temperature Control
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Solution Overview
Problem
Homeowners struggle to efficiently control pool and spa heaters to achieve desired water temperatures at specific times, often leading to energy waste due to incorrect operation timing or power levels, based on guesswork rather than scientific principles.
Innovation Solution
A system that utilizes historical and current weather data, weather forecasts, and equipment performance data to model and determine optimal heater operation schedules, including the use of multiple heating devices, to achieve desired water temperatures while minimizing energy usage, with control signals sent to pool equipment via user devices or networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If homeowners operate heaters based on guesswork, then water temperature may be achieved, but energy is wasted due to incorrect operation timing or power levels
Solution Approach 1:
The system performs preliminary actions by calculating and scheduling heater operation in advance based on desired future water temperatures, environmental conditions, and heater performance characteristics. The controller determines optimal start times and power levels before the heating period begins, preventing both premature operation and insufficient heating.
Solution Approach 2:
The system implements feedback by continuously monitoring actual water temperature, comparing it to desired temperature profiles, and adjusting heater operation accordingly. Environmental condition sensors provide feedback on ambient temperature, humidity, and wind conditions that affect heat loss, allowing real-time optimization of heating schedules.
2Temperature
If heaters are operated at higher power levels to ensure temperature is reached, then water temperature is achieved timely, but energy consumption increases
Solution Approach 1:
The system applies dynamics by continuously adjusting heater power levels based on real-time conditions rather than operating at fixed high power. The controller dynamically modulates heater output to match the actual heating requirements, increasing power when needed and reducing it when environmental conditions are favorable or temperature targets are approaching.
Solution Approach 2:
The system changes operational parameters by adjusting heater power levels, cycle durations, and start times based on calculated requirements. Instead of maintaining constant high power, the controller varies these parameters to achieve optimal balance between temperature achievement and energy consumption.
3Loss of energy
If heaters are operated late or at lower power levels to save energy, then energy consumption is reduced, but water temperature is not achieved at desired time
Solution Approach 1:
The system performs preliminary calculations to determine the latest possible start time for heating that still guarantees desired temperature achievement. By pre-calculating heating requirements based on environmental conditions and heater performance, the system identifies optimal operation windows that ensure temperature targets are met without excessive energy consumption.
Solution Approach 2:
The system uses feedback from temperature sensors and environmental condition monitors to verify that heating is progressing as predicted. If actual temperature rise deviates from predictions, the controller adjusts operation timing and power levels to ensure the temperature target is achieved, maintaining reliability while optimizing energy use.
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 timely achievement of desired water temperatures while reducing energy waste by providing a data-driven approach to heater operation, optimizing energy usage and comfort.
Implementation Method 1
control heaters or other equipment of the users' pools or spas so as to achieve the identified water temperatures
Data Source
AI summary
“Just in time” operational techniques allow equipment of swimming pools or spas to achieve identified water temperatures at specified times. A user may supply information such as a desired water temperature (i.e. a temperature set point) and a time at which the water is desired to be at the desired temperature. After receiving the user-supplied information, software may account as well for certain environmental conditions to devise a suitable schedule for controlling heating of the water of the swimming pool or spa. Adjustments may be made to the schedule based on then-current water temperatures or other changed conditions.