Condenser Coil Water Spray Control to Prevent Compressor Slugging
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Solution Overview
Problem
Air conditioning systems face inefficiencies and maintenance challenges due to liquid slugging in compressors, where refrigerant returns in a mixed vapor and liquid state, potentially damaging the compressor, and condenser coils are not effectively cooled or cleaned, leading to increased energy and labor costs.
Innovation Solution
An apparatus and method involving a filter system with water delivery, controlled by a microcontroller using ambient temperature, humidity, and electrical current sensors, to cool and clean condenser coils, preventing liquid slugging by ensuring refrigerant remains in a vapor state and reducing maintenance through efficient water distribution and evaporation-based cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If refrigerant is compressed without ensuring it is in vapor state, then compression process continues, but liquid slugging damages the compressor
Solution Approach 1:
The system performs preliminary cooling action on the suction line and refrigerant before compression by circulating chilled water through channels in the suction line. This preliminary cooling ensures the refrigerant is properly condensed and in vapor state before entering the compressor, preventing liquid slugging and protecting the compressor from damage.
2Ease of manufacture
If condenser coils are not cleaned, then maintenance costs increase, but cleaning frequency increases labor costs
Solution Approach 1:
The system implements self-service cleaning by using chilled water circulation through the suction line to continuously condense refrigerant and maintain clean condenser coils. The chilled water acts as a cleaning agent that prevents dust and debris accumulation on the coils, eliminating the need for frequent manual cleaning and reducing both maintenance costs and labor time.
3Temperature
If compressor runs more to achieve cooling, then cooling effect is maintained, but energy consumption increases
Solution Approach 1:
The system changes the temperature parameter of the refrigerant by circulating chilled water through the suction line, lowering the refrigerant temperature before compression. This parameter change improves the efficiency of the compression process, allowing the compressor to run less frequently and consume less energy while maintaining the desired cooling effect.
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 solution effectively reduces operating costs by enhancing condenser efficiency, minimizing compressor usage, and lowering maintenance needs by ensuring the refrigerant remains in a vapor state and cleaning the condenser coils, thus improving overall system performance and longevity.
Implementation Method 1
An apparatus and method involving a filter system with water delivery, controlled by a microcontroller using ambient temperature, humidity, and electrical current sensors, to cool and clean condenser coils
Implementation Method 2
the delivery of water, which may be ambient temperature or chilled, to a filter apparatus
Implementation Method 3
a microcontroller device which contains programming that reads ambient air temperature, condenser liquid line temperature, relative humidity, and electrical current sensors
Implementation Method 4
ambient air temperature, condenser liquid line temperature, relative humidity, and electrical current sensors
Implementation Method 5
the delivery of water, which may be ambient temperature or chilled, to a filter apparatus
Data Source
AI summary
An apparatus and method to cool compressors, condensing coils, and similar devices. The compressor or condensing coil is cooled by the delivery of water, which may be ambient temperature or chilled. In one embodiment, the water is delivered to a mesh filter or screen via one or more mist spray nozzles. Water conduits may be integrated with the filter frame. The method to control the delivery of the water is designed to conserve water. The control circuit comprises a microcontroller device which contains programming that receives inputs, including but not limited to, outside ambient air temperature, condenser liquid line temperature, relative humidity and electric current, and uses said inputs to provide a stepwise level of control (“solenoid open time”) of water delivery commensurate with outside air temperature and relative humidity.