Dialysate Preheating Control for Lower Energy Dialysis Startup
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Solution Overview
Problem
Dialysis machines waste significant energy by continuously heating dialysate to body temperature before patient arrival, contributing to a large carbon footprint and unnecessary electrical load.
Innovation Solution
A system and method for pre-heating dialysate using a control circuit and processing circuit to activate the dialysate heater based on patient or clinic status, determining trigger events such as check-in, schedule, or operational status to optimize heating timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dialysate is continuously heated to body temperature before patient arrival, then the dialysate is ready for immediate use, but significant energy is wasted and carbon footprint increases
Solution Approach 1:
The system performs preliminary actions by pre-heating the dialysate to a lower temperature (e.g., 20-25°C) in advance, rather than waiting until the last moment. This preliminary heating reduces the energy required for final heating while ensuring the dialysate is ready for quick final preparation when the patient arrives.
Solution Approach 2:
The heating system operates periodically rather than continuously - it heats the dialysate in intervals based on predicted patient arrival times and treatment schedules. The system activates heating only when needed and allows the heater to cycle on and off, reducing overall energy consumption while maintaining dialysate readiness.
2Productivity
If dialysate heater is activated early to ensure dialysate is ready, then treatment can start immediately, but unnecessary heating occurs and electrical load increases
Solution Approach 1:
The system dynamically adjusts the heating schedule based on real-time data including patient check-in status, predicted arrival times, and treatment schedules. The heating control is flexible and adaptive, activating the heater only when conditions indicate a patient will arrive soon, rather than following a fixed continuous heating schedule.
Solution Approach 2:
The system uses feedback from patient check-in systems, clinic schedules, and treatment management software to determine when to activate the heater. This feedback loop allows the system to respond to actual clinic conditions and patient flow, activating heating only when clinically indicated and turning it off when not needed.
3Temperature
If dialysate is heated continuously to maintain body temperature, then temperature consistency is ensured, but energy consumption and carbon emissions increase significantly
Solution Approach 1:
The system performs preliminary heating to a lower temperature in advance, creating a thermal head start. This preliminary action reduces the temperature gap that needs to be bridged at the final stage, allowing for more efficient energy use while still achieving the required body temperature by treatment time.
Solution Approach 2:
The system changes the heating parameters by using a two-stage temperature approach: first heating to an intermediate temperature (20-25°C) over an extended period, then completing the heating to body temperature (37°C) closer to treatment time. This parameter change optimizes energy efficiency while maintaining temperature consistency.
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
Reduces energy waste by heating dialysate only when needed, ensuring it reaches body temperature just before use, thereby minimizing energy consumption and carbon emissions.
Implementation Method 1
a dialysate heater configured to heat the dialysate
Data Source
AI summary
Systems and methods for pre-heating dialysate in a dialysis treatment system are disclosed. The system may include a dialysis machine including a pump to move dialysate through the dialysis machine, a dialysate heater to heat the dialysate, a control circuit operatively associated with the dialysate heater to activate and deactivate the dialysate heater, and a processing circuit. The processing circuit is configured to determine whether a trigger event has occurred, wherein whether the trigger event has occurred is determined based on a status of a dialysis patient assigned to the dialysis machine or a status of a dialysis clinic at which the dialysis machine is located. In response to the trigger event occurring, the processing circuit is configured to send a control signal to the control circuit to activate the dialysate heater and begin heating dialysate to a predetermined temperature.