Refrigeration System Pressure Control for Dynamic Heat Load Adaptation
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Solution Overview
Problem
Air conditioning, chiller, and refrigeration systems typically operate at suboptimal efficiency due to fluctuating internal and external heat loads, which cause refrigerant pressures to deviate from the original equipment manufacturer (OEM) optimal settings, leading to reduced performance and potential system damage.
Innovation Solution
A dynamic refrigeration system that automatically adjusts refrigerant pressures and refrigerant charge volume in real-time using a programmable logic controller (PLC), pressure transducers, and temperature sensors to maintain OEM optimal efficiency, incorporating a small liquid refrigerant pump and refrigerant storage tank, and optionally includes an ultrasonic transducer to enhance heat transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If refrigerant pressure is set manually at initial service, then system can be configured quickly, but system efficiency decreases as ambient temperature and heat loads change
Solution Approach 1:
The patent implements dynamic refrigerant pressure adjustment by replacing static manual pressure settings with an automated system that continuously monitors ambient temperature and internal heat load conditions, then actively adjusts refrigerant pressure in real-time to maintain optimal efficiency across varying operating conditions
Solution Approach 2:
The system incorporates feedback mechanisms through sensors that continuously monitor ambient temperature, internal heat load, and refrigerant pressure conditions, feeding this information back to the control system which then adjusts pressure settings to maintain optimal performance as conditions change
2Productivity
If refrigerant pressure is adjusted for low ambient temperature, then system operates efficiently at low temperatures, but system may be damaged by excessive pressure at high ambient temperatures
Solution Approach 1:
The system dynamically adjusts refrigerant pressure based on real-time ambient temperature conditions, automatically lowering pressure limits as ambient temperature rises to prevent excessive pressure buildup and potential system damage, while maintaining optimal pressure at lower temperatures for maximum efficiency
Solution Approach 2:
The control system proactively prevents harmful high-pressure conditions by monitoring ambient temperature trends and preemptively adjusting refrigerant pressure settings before dangerous pressure levels can be reached, rather than merely reacting to pressure buildup after it occurs
3Device complexity
If system operates with fixed refrigerant charge, then system design is simple, but system cannot adapt to changing internal and external heat loads
Solution Approach 1:
The patent transforms the static refrigerant charge system into a dynamic one by incorporating automated control mechanisms that adjust refrigerant distribution and pressure in real-time based on sensor feedback about internal and external heat load conditions, enabling the system to adapt without requiring complex manual intervention
Solution Approach 2:
The system performs self-adjustment of refrigerant pressure and distribution based on automated sensing and control, eliminating the need for continuous manual intervention while adapting to changing heat load conditions, thereby maintaining simplicity of operation while gaining adaptability
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 maintains optimal efficiency by dynamically adjusting refrigerant pressures and refrigerant charge, potentially increasing system efficiency by 15% or more, while preventing damage from excessive pressures, and can be installed without downtime or significant cost, offering quick payback through reduced electricity costs.
Implementation Method 1
an ultrasonic transducer to enhance heat transfer efficiency
Data Source
AI summary
A dynamic refrigeration system may automatically, at pre-determined time periods on-the-fly, adjust a refrigerant system's refrigerant pressures to predetermined optimal efficiency pressures as the internal and external heat loads change over a range. This may result in the refrigerant system pressures closely operating within a range of predetermined optimal efficiency pressures. This system may automatically instantaneously fine tune and balance on all air conditioning, heat pump, and refrigeration systems as the internal and external heat loads are continuously changing dynamically. The system may include a small liquid refrigerant pump and refrigerant storage tank, one or more wired or wireless pressure transducers and temperature sensors, and a “brain” to make decisions to keep the system instantaneously set at factory specs all the time. The system may include a wireless communication means so it can instantaneously report its operating condition, loads, and cost of operating.