Universal Heat Engine Using Waste Heat for Idle-Free HVAC Power
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Solution Overview
Problem
Current HVAC systems in the commercial transportation industry face challenges in providing an environmentally friendly solution that complies with anti-idling regulations, as they require engine idling to maintain climate control, leading to significant fuel consumption and emissions.
Innovation Solution
A universal heat engine that operates on a differential in temperature, powering both air conditioning systems and electrical generators, utilizing a heat engine section and an output section with valve assemblies and a piston rod to manage energy conversion from various heat sources, including petroleum, solar, and geothermal, while minimizing environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If engine idling is used to power HVAC systems, then climate control is maintained, but fuel consumption and emissions increase significantly
Solution Approach 1:
The heat engine is designed to perform multiple functions: it can power air conditioning systems, heating systems, and electrical generators using the same basic mechanism. The system accepts various heat sources (diesel engine coolant, exhaust heat, external heaters, solar, geothermal) and converts them to mechanical work for different outputs, eliminating the need for separate idling engines for each function.
Solution Approach 2:
The heat engine acts as an intermediary device between available heat sources and the HVAC/electrical systems. Instead of directly idling the main diesel engine for HVAC power, the heat engine captures waste heat or external heat and converts it to mechanical work, serving as a mediator that decouples the main engine operation from HVAC requirements.
2Temperature
If engine idling is permitted to maintain HVAC systems, then climate control functionality is preserved, but environmental pollution increases
Solution Approach 1:
The system converts waste heat from diesel engine coolant and exhaust - previously harmful thermal energy that would be dissipated - into useful mechanical work for powering HVAC systems. External heat sources (solar, geothermal, natural gas heaters) are also utilized to replace fossil fuel combustion, transforming available thermal energy into beneficial climate control while eliminating the need for polluting idling emissions.
3Use of energy by moving object
If battery powered HVAC systems are used, then engine idling is reduced, but system complexity increases with battery banks and inverters
Solution Approach 1:
The heat engine provides direct mechanical work output that can be coupled to HVAC compressors and generators, replacing the need for electrical conversion systems. Instead of using batteries and inverters to convert chemical energy to electrical energy, the heat engine directly converts thermal energy to mechanical energy, which can directly drive mechanical HVAC components, simplifying the overall system architecture.
4Temperature
If APU (Auxiliary Power Unit) is used, then climate control is maintained without main engine idling, but additional fuel consumption and system complexity occur
Solution Approach 1:
The heat engine system merges the functions of the main diesel engine with the auxiliary power needs. By capturing waste heat from the main engine's coolant and exhaust systems, the heat engine integrates with the existing diesel engine infrastructure rather than requiring a completely separate APU system. This combined approach uses the main engine's thermal byproducts to power HVAC and electrical needs, eliminating the need for dedicated APU fuel consumption.
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 universal heat engine effectively powers air conditioning and electrical systems without engine idling, reducing fuel consumption and emissions, thus meeting anti-idling regulations and minimizing environmental impact.
Implementation Method 1
A universal heat engine that operates on a differential in temperature, powering both air conditioning systems and electrical generators
Data Source
AI summary
A universal heat engine is disclosed for converting energy from an input heat source to an output. The universal heat engine comprises a heat engine section and an output section. The heat engine section includes a heat engine bore receiving a heat engine piston. A heat engine valve assembly communicates with the heat engine bore for effecting reciprocal motion of the heat engine piston. The output section includes an output bore receiving an output piston. A piston rod interconnects the heat engine piston to the output piston. A control controls the heat engine valve assemblies to operate the heat engine section in accordance with a desired output from the output section. The heat source may comprise the burning of a petroleum product, a solar heat source, geothermal heat source or a byproduct heat source. The output may comprise a static or mobile air conditioning system or an electrical generator.