Vapor Compression Distillation Control for Low-Power Water Purification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing water purification techniques are inadequate in providing reliable clean water without consumables and maintenance, particularly in decentralized settings with limited resources and power availability, failing to address a wide range of contaminants effectively.
Innovation Solution
A vapor compression distillation system with a controller that adjusts the compressor motor speed based on temperature sensors to optimize efficiency and reduce power consumption and maintenance, using proportional gain adjustments and compensation for varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If vapor compression distillation is used to purify water, then water purification effectiveness is improved, but power consumption and maintenance requirements increase
Solution Approach 1:
The patent implements variable speed control of the compressor motor, allowing it to operate at different speeds based on real-time temperature feedback from sensors. This dynamic adjustment enables the system to maintain effective water purification while consuming less power by operating at lower speeds when conditions permit, rather than running at constant high speed.
Solution Approach 2:
The system incorporates temperature sensors that continuously monitor the distillation process and feed this information back to the controller. The controller uses this feedback to adjust the compressor motor speed accordingly, creating a closed-loop control system that optimizes power consumption while maintaining purification effectiveness.
2Reliability
If vapor compression distillation is used to purify water, then water purification effectiveness is improved, but maintenance requirements increase
Solution Approach 1:
The system performs self-adjustment through automated temperature-based control, reducing the need for manual intervention and maintenance. The controller automatically adjusts compressor speed based on sensor feedback, eliminating the need for manual calibration and reducing maintenance burden in decentralized settings.
3Productivity
If compressor motor speed is increased to enhance production capability, then water production rate is improved, but power consumption increases
Solution Approach 1:
The variable speed control system allows the compressor motor to dynamically adjust its rotation speed based on real-time temperature conditions. When higher production is needed and conditions permit, the motor can operate at higher speeds; when conditions require lower energy consumption, it automatically reduces speed, optimizing the balance between productivity and power usage.
Solution Approach 2:
The system changes the operational parameters of the compressor motor based on temperature feedback. By adjusting the motor speed parameter in response to temperature conditions, the system can optimize water production rate while managing power consumption according to available energy resources.
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
Enhances the efficiency and production capability of water purification, reducing power requirements and maintenance needs while effectively addressing various contaminants, suitable for decentralized systems.
Implementation Method 1
an evaporator in fluid communication with the source input
Implementation Method 2
Water vapor distillation apparatus, method and system
Implementation Method 3
a compressor having an impeller coupled to a motor. The compressor may have a low pressure inlet for vapor from the evaporator and a high pressure outlet for vapor compressed by the compressor
Implementation Method 4
a condenser in heat transfer relationship with a plurality of exterior surfaces of the evaporator and in fluid communication with the outlet of the compressor
Implementation Method 5
a condenser in heat transfer relationship with a plurality of exterior surfaces of the evaporator
Data Source
AI summary
A distillation device may comprise a source fluid input and an evaporator in fluid communication therewith. The device may further comprise a compressor having an impeller coupled to a motor, the compressor having a low pressure inlet for vapor from the evaporator and a high pressure outlet for compressed vapor. The device may further comprise at least one temperature sensor configured to monitor temperature of vapor in the inlet and a condenser in heat transfer relationship with exterior surfaces of the evaporator and in fluid communication with the compressor outlet. The device may further comprise a controller configured to govern rotation speed of the impeller with an impeller motor command based on a calibrated motor speed for the distillation device. The controller may be configured to determine an adjusted motor speed for a next use of the device and overwrite the calibrated motor speed with the adjusted motor speed.