Device for energy saving
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Solution Overview
Problem
Existing methods for coupling heat-requiring and cold-requiring industrial processes do not efficiently recover energy, leading to significant energy loss, as they often rely on compressors that cause overheating and require excessive energy consumption.
Innovation Solution
A method that utilizes a binary fluid mixture of water and ammonia, compressed by a compressor suitable for two-phase fluids, such as a Lysholm rotor or vane-equipped compressor, to transfer heat from a heat-requiring process to a cold-requiring process, enhancing the energy coefficient of performance (COP) by avoiding overheating and optimizing energy recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a traditional compressor is used to compress the binary fluid mixture, then the compression process can be completed, but overheating occurs and excessive energy is consumed
Solution Approach 1:
The invention changes the compression parameters by using a compressor specifically designed for two-phase fluids, which compresses the binary fluid mixture (water and ammonia) in a liquid-vapor state without causing excessive overheating. This specialized compressor maintains appropriate temperature and pressure parameters during compression, avoiding the overheating problem of traditional compressors while achieving the required compression for heat transfer.
Solution Approach 2:
The invention uses a binary fluid mixture of water and ammonia as the working fluid, which combines the properties of both components to achieve efficient heat transfer during compression. This composite fluid system allows for effective heat recovery from the hot exhaust gases of industrial furnaces while maintaining controlled temperature rise during compression.
2Loss of energy
If heat recovery is implemented without proper compression, then energy loss is reduced, but the heat transfer efficiency is insufficient
Solution Approach 1:
The invention utilizes phase transitions of the binary fluid mixture during compression and expansion. The compressor compresses the two-phase fluid (liquid and vapor), and during this process phase changes occur that enable efficient heat absorption from the industrial furnace exhaust gases. The phase transition mechanism ensures both energy recovery and adequate heat transfer efficiency.
3Use of energy by moving object
If the energy coefficient of performance (COP) is increased above 2.5, then economic viability is achieved, but the system complexity increases
Solution Approach 1:
The binary fluid mixture of water and ammonia acts as an intermediary medium between the heat source (industrial furnace exhaust) and the heat utilization system. This intermediary fluid enables efficient heat transfer and phase change processes that achieve high energy efficiency (COP > 2.5) while the system design integrates these components in a coordinated manner to manage complexity.
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
This approach increases the total energy saving by coupling the two processes, achieving a COP greater than 2.5, which is economically viable, and allows for the reuse of heat in the cold-requiring process, reducing the need for external energy input in both processes.
Implementation Method 1
a first circuit for energy recovery from the first industrial process transfers heat to a second circuit for cold production
Implementation Method 2
the energy carrier is a binary fluid consisting of water and ammonia which has two phases and is compressed by a compressor
Implementation Method 3
all or part of the liquid phase evaporates as a result of compression such that overheating does not occur
Implementation Method 4
transfers heat from a heat-requiring process to a cold-requiring process
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Device for coupling a first heat-requiring industrial process to a second cold-requiring industrial process, whereby a first circuit for energy recovery (1) from the first industrial process transfers heat to a second circuit for cold production (2) for the second industrial process, characterised in that in the first circuit for energy recovery (1) the energy carrier is two-phase and is compressed by compressor (7) that increases the pressure and temperature of the energy carrier in the first circuit for energy recovery (1) and is specifically suitable for compressing a two-phase fluid.