Heat Engine–Heat Pump Cogeneration for Thermal Energy Recovery
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Solution Overview
Problem
Centralized power stations have inefficiencies in generating and distributing electricity, leading to thermal energy losses and fluctuations in electricity supply, which can result in power blackouts and increased energy costs.
Innovation Solution
A cogeneration system that integrates a heat engine and a heat pump to provide heating, cooling, and electricity to an enclosure, using heat transfer fluids to efficiently transfer thermal energy and operate independently or simultaneously, allowing for off-grid operation and thermal energy storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If centralized power stations generate and distribute electricity, then electricity supply is provided to consumers, but thermal energy losses occur and electricity supply fluctuates causing power blackouts
Solution Approach 1:
The system divides the centralized power generation function into distributed on-site generation units. Each enclosure has its own cogeneration system that independently generates electricity and thermal energy, eliminating reliance on distant centralized power stations and reducing transmission losses.
Solution Approach 2:
Each enclosure becomes self-sufficient by generating its own electricity and thermal energy needs through on-site cogeneration systems. The system uses waste heat from electricity generation to provide heating and cooling, making the enclosure self-service for both electrical and thermal energy requirements.
2Power
If a heat engine generates electricity, then electrical power is produced, but thermal energy is wasted without utilization
Solution Approach 1:
The system converts the harmful waste heat from electricity generation into a beneficial resource. The heat engine's exhaust thermal energy is captured and utilized by the heat pump for heating and cooling applications, transforming energy waste into useful thermal service.
Solution Approach 2:
The cogeneration system performs multiple functions simultaneously: the heat engine generates electricity while its waste heat is used by the heat pump for both heating and cooling. This multi-functionality ensures comprehensive energy utilization without waste.
3Ease of operation
If separate heating and cooling systems are used, then heating and cooling needs are met, but energy consumption and system complexity increase
Solution Approach 1:
The system merges heating and cooling functions into a single integrated cogeneration system. The heat engine and heat pump work together to provide both heating and cooling from the same energy source, eliminating the need for separate systems and reducing overall energy consumption.
Solution Approach 2:
Instead of discarding waste heat from electricity generation, the system recovers it for heating and cooling purposes. The thermal energy that would otherwise be lost is captured and utilized by the heat pump, significantly reducing the energy needed for thermal services.
4Device complexity
If reliance on centralized power stations is maintained, then infrastructure simplicity is preserved, but energy costs increase and autonomy is reduced
Solution Approach 1:
The centralized power distribution infrastructure is segmented into distributed on-site generation units. Each enclosure has its own cogeneration system, eliminating the need for complex transmission and distribution networks while providing energy independence and 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 enhances energy efficiency, reduces reliance on centralized power, and provides reliable heating, cooling, and electricity, while minimizing energy consumption and costs by utilizing thermal energy storage and on-site energy generation.
Implementation Method 1
the first conduit may be filled with a first heat transfer fluid, and the first conduit may be constructed and arranged to transfer the first heat transfer fluid from the heat engine to the enclosure such that thermal energy is transferred from the first heat transfer fluid to the enclosure to provide heating to the enclosure
Implementation Method 2
the third conduit may be filled with a second heat transfer fluid, and the third conduit may be constructed and arranged to transfer the second heat transfer fluid from the heat pump to the enclosure such that thermal energy is absorbed by the second heat transfer fluid from the enclosure to provide cooling to the enclosure
Data Source
AI summary
Systems and methods utilize a cogeneration system for providing heating, cooling, and/or electricity to an enclosure. The system includes a heat engine for heating and supplying electricity to the enclosure. Coupled to the heat engine is a first conduit configured to transfer fluid from the heat engine to the enclosure to transfer thermal energy from the fluid to the enclosure. The system further includes a heat pump configured to supply at least heating and cooling to the enclosure. Coupled to the heat pump is at least a second conduit. The second conduit is configured to move fluid from the heat pump to the enclosure to transfer thermal energy from the fluid to the enclosure.