Gas engine heat pump
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Solution Overview
Problem
Gas engine heat pumps face challenges in precisely adjusting and improving engine output to meet increasing load requirements, as existing technologies lack efficient mechanisms for optimizing exhaust gas energy utilization.
Innovation Solution
The implementation of a gas engine heat pump system with a turbocharger, supercharger, and valve control mechanism that manages exhaust gas flow paths and compression to adjust engine output based on load conditions, utilizing a controller to optimize the operation of valves and supercharger according to specific load conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single exhaust flow path is used without additional flow paths, then the device complexity is low, but the engine output cannot be precisely adjusted and improved
Solution Approach 1:
The exhaust flow path is divided into multiple segments (first exhaust flow path, second exhaust flow path, third exhaust flow path) that can be independently controlled through valves. This segmentation allows selective routing of exhaust gas to different turbines based on load conditions, enabling precise engine output adjustment while maintaining manageable system complexity through modular design
Solution Approach 2:
The system dynamically switches between different exhaust flow paths using controllable valves (first valve in second exhaust flow path, second valve in third exhaust flow path). The controller activates specific flow paths based on real-time load conditions, allowing the engine output to be adaptively adjusted without requiring a completely complex fixed structure
2Loss of energy
If exhaust gas energy is not fully utilized, then the device complexity is low, but energy loss increases
Solution Approach 1:
The system converts the potentially wasted exhaust gas energy into useful work by routing exhaust gas through multiple flow paths to drive turbines. The first turbine drives the first compressor for mixed air compression, while the second turbine drives the supercharger for additional compression, thereby converting exhaust energy that would otherwise be lost into beneficial compression work
Solution Approach 2:
Instead of directly discarding exhaust gas through a single path, the system recovers energy by routing exhaust gas through multiple turbines in sequence or in parallel depending on load conditions. The exhaust gas continues to be utilized after passing through the first turbine, with the ability to redirect it through the second turbine to extract additional energy before final discharge
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 configuration allows for more precise control and enhancement of engine output, improving efficiency by effectively utilizing exhaust gas energy and reducing noise and thermal energy conversion losses.
Implementation Method 1
a first turbine which is installed in the first exhaust flow path and receives the exhaust gas passing through the first exhaust flow path to drive the first compressor
Implementation Method 2
a supercharger which is installed in the first exhaust flow path between the engine and the first turbine, and receives and compresses the exhaust gas passing through the first exhaust flow path to supply to the first turbine
Implementation Method 3
an engine which burns a mixed air of air and fuel
Data Source
AI summary
The present disclosure relates to a gas engine heat pump including: an engine which burns a mixed air of air and fuel; a first exhaust flow path which is connected to the engine so that exhaust gas discharged from the engine passes through and is discharged to the outside; a turbo charger including: a first compressor which compresses the mixed air and supplies to the engine, and a first turbine which is installed in the first exhaust flow path and receives the exhaust gas passing through the first exhaust flow path to drive the first compressor; a supercharger which is installed in the first exhaust flow path between the engine and the first turbine, and receives and compresses the exhaust gas passing through the first exhaust flow path to supply to the first turbine; a second exhaust flow path which is branched from the first exhaust flow path between the engine and the supercharger, and converges to the first exhaust flow path between the supercharger and the first turbine; a first valve which is installed to be opened and closed in the second exhaust flow path; a third exhaust flow path which is branched from the first exhaust flow path between the supercharger and the first turbine, and converges to the first exhaust flow path in downstream of the first turbine; a second valve which is installed to be opened and closed in the third exhaust flow path; and a controller which controls operations of the first valve, the second valve, and the supercharger according to load of the engine.