Maritime Absorption Refrigeration with Baffles and Pressure Compensation
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Solution Overview
Problem
Conventional absorption refrigeration units are inefficient and unreliable in maritime environments due to movement-related issues, high maintenance costs, and contamination, which affects temperature and humidity regulation on ships.
Innovation Solution
A vapor absorption refrigeration device using a lithium bromide medium that incorporates a U-tube for pressure compensation, baffles to minimize fluid movement, and a heat exchanger to improve thermal efficiency, along with a demister and baffle trays to prevent contamination and entrainment, allowing operation under dynamic maritime conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional absorption refrigeration units are used in maritime environments, then temperature and humidity regulation is achieved, but reliability deteriorates due to ship movement causing fluid contamination and operational failures
Solution Approach 1:
The system is divided into separate functional units (evaporator, condenser, absorber, generator) connected by dedicated conduits. Each unit is equipped with specific protective features such as baffles, demisters, and check valves to prevent contamination during ship movement, thereby improving overall reliability
Solution Approach 2:
Baffles and demisters are introduced as intermediary elements within the fluid pathways to intercept and prevent liquid contamination before it can affect critical components. These intermediaries act as protective barriers that maintain system reliability under dynamic maritime conditions
2Ease of operation
If piston compressors are used to regulate the environment on board a ship, then temperature control is achieved, but operational cost increases due to high fuel consumption and maintenance requirements
Solution Approach 1:
The mechanical piston compressor is replaced with a thermal absorption system that uses waste heat from the ship's engine to drive the refrigeration cycle. This substitution eliminates the need for additional mechanical work and reduces fuel consumption while maintaining temperature control functionality
Solution Approach 2:
The system recovers waste heat from the ship's engine exhaust or cooling water and utilizes it in the generator unit to evaporate lithium bromide and drive the refrigeration cycle. This energy recovery approach converts previously wasted thermal energy into useful cooling, significantly reducing operational costs
3Productivity
If conventional absorption units operate without modifications for maritime conditions, then simple construction is maintained, but productivity deteriorates due to operational failures and maintenance requirements
Solution Approach 1:
The system is divided into separate functional units (evaporator, condenser, absorber, generator) connected by dedicated conduits. Each unit is equipped with specific protective features such as baffles, demisters, and check valves to prevent contamination during ship movement, thereby improving overall reliability
Solution Approach 2:
Baffles and demisters are introduced as intermediary elements within the fluid pathways to intercept and prevent liquid contamination before it can affect critical components. These intermediaries act as protective barriers that maintain system reliability under dynamic maritime conditions
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 device effectively regulates temperature and humidity on ships, improves fuel economy by utilizing waste heat, and reduces maintenance costs by preventing contamination and blockages, ensuring reliable operation despite ship movement.
Implementation Method 1
an absorber unit, wherein water vapor deriving from an evaporator unit is absorbed in a concentrated solution of lithium bromide releasing heat
Implementation Method 2
a generator or concentrator unit wherein a diluted solution of lithium bromide is concentrated by energy absorbing evaporation
Implementation Method 3
a condenser unit wherein vapor from the generator unit is cooled to a liquid by a coolant supply
Implementation Method 4
an evaporator unit wherein the water deriving from the condenser unit is evaporated thereby extracting heat from the exterior source that is to be refrigerated
Implementation Method 5
the device of the present invention comprises an absorber unit, wherein water vapor deriving from an evaporator unit is absorbed in a concentrated solution of lithium bromide releasing heat
Data Source
AI summary
An absorption refrigeration and air conditioning device capable of controlling temperature and/or the humidity of enclosed spaces particularly useful in maritime applications and improving fuel economy of internal combustion engines is provided.