Fuel Cell Air Intake Control for Lower-Energy Building HVAC
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Solution Overview
Problem
Air conditioning systems in buildings consume significant energy for mechanical equipment like fans and blowers, necessitating a reduction in energy consumption while maintaining effective air conditioning and electricity production.
Innovation Solution
An air conditioning system incorporating a fuel cell system that utilizes a fuel cell blower to produce electrical energy through a chemical reaction with air, integrating an air blower and control mechanisms to optimize air flow and reduce energy consumption by selectively using external air for both air conditioning and fuel cell operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a fuel cell system is operated to produce electrical energy, then electricity production is improved, but air supply control complexity increases
Solution Approach 1:
The air intake line is designed to serve dual purposes: supplying air for air conditioning and supplying air for fuel cell operation. The system can operate in different modes (air conditioning mode, fuel cell power generation mode, or combined mode) by controlling the intake shut-off valve, allowing one air supply system to fulfill multiple functions and reducing overall system complexity.
Solution Approach 2:
The controller pre-configures the air intake line with a shut-off valve that can be positioned in advance to direct air flow to either the air conditioning system or the fuel cell system. This preliminary arrangement of air supply paths eliminates the need for complex real-time air management during operation.
2Reliability
If external air is supplied to the interior through the air intake line, then air conditioning effectiveness is improved, but energy consumption increases
Solution Approach 1:
The fuel cell system generates electrical energy through the chemical reaction of hydrogen with oxygen from the air intake line. This self-generated electricity can be used to power the air blower and other air conditioning equipment, making the system energy-self-sufficient and reducing external energy consumption while maintaining air conditioning effectiveness.
Solution Approach 2:
The patent combines the air conditioning function and the fuel cell power generation function into a single integrated system. By merging these two functions, the system uses the same air intake infrastructure for both purposes, reducing redundant energy consumption and improving overall system efficiency.
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 reduces energy consumption for air conditioning and allows for the utilization of produced electricity, thereby saving energy and optimizing facility costs.
Implementation Method 1
producing electrical energy through a chemical reaction between the received air and hydrogen fuel
Data Source
AI summary
An air conditioning system using a fuel cell system can reduce energy consumption for air conditioning and can use the electricity produced by operating the fuel cells, where a fuel cell blower that is used to operate fuel cells is also used for air conditioning. The air conditioning system includes an air intake line connected between an interior and an exterior of a building; an air blower disposed in the air intake line to supply external air to the interior; a first intake shut-off valve for opening or closing the air intake line; a fuel cell system receiving air in the interior by operation of the fuel cell blower and producing electrical energy; and a controller controlling operation of the first intake shut-off valve to open the air intake line when the fuel cell system is operated.