Systems and methods for measuring emissions from a building
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Solution Overview
Problem
Current methods for building emissions monitoring rely on estimation using emission factors, which are generic and lack precision, failing to accurately account for unique building conditions and operational inefficiencies.
Innovation Solution
A system comprising sensors and a computing device that directly measures gas constituents and flow rates from building exhausts, providing real-time data for accurate emission calculations and alerting mechanisms to improve energy efficiency and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If emission factors are used to estimate building emissions, then the monitoring system is simple and low-cost, but the measurement precision is insufficient and cannot accurately reflect unique building conditions
Solution Approach 1:
The patent replaces manual sampling and laboratory analysis methods with automated in-situ sensors that directly measure gas constituents (CO2, CH4, N2O, etc.) and flow rates at the building exhaust outlet. This substitution of mechanical/chemical methods with electronic sensing systems enables continuous real-time monitoring with high precision while maintaining practical system complexity through integration of sensors, flow meters, and data processing units into a single monitoring device.
2Adaptability or versatility
If generic emission factors are applied to all buildings, then the methodology is easy to implement, but it fails to identify operational issues and maintenance needs specific to individual buildings
Solution Approach 1:
The patent implements local quality by positioning multiple sensors (gas concentration sensors and flow rate sensors) directly at the building exhaust outlet to measure local emission conditions specific to that building. The system captures building-specific parameters including CO2, CH4, N2O concentrations and actual flow rates, enabling customized emission calculations that reflect the unique operational characteristics, combustion efficiency, and maintenance status of each individual building rather than applying uniform generic factors.
Solution Approach 2:
The system incorporates feedback mechanisms by continuously monitoring emission parameters and providing real-time data output that can trigger alerts when emissions exceed thresholds or indicate operational issues. The measured data feeds back to building operators and maintenance personnel, enabling them to identify and address specific problems such as incomplete combustion, equipment malfunction, or maintenance needs based on actual building performance rather than generic estimates.
3Reliability
If direct measurement systems with multiple sensors are deployed, then accurate real-time emission data is obtained, but the cost and complexity of the system increases
Solution Approach 1:
The patent merges multiple sensing functions (gas concentration detection for CO2, CH4, N2O, and flow rate measurement) into a single integrated monitoring device or system unit. The sensors are positioned in close proximity at the building exhaust outlet, and the system combines their outputs through a unified data processing algorithm that calculates total emissions by integrating concentration and flow rate measurements. This merging approach maintains high reliability through multi-parameter measurement while managing complexity through system integration and centralized data handling.
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 offers precise and actionable insights for reducing emissions and improving energy efficiency by identifying operational issues and maintenance needs, moving beyond generic estimation methods.
Implementation Method 1
a plurality of sensors arranged in the housing to detect concentrations of gas constituents in gas exiting the building
Implementation Method 2
a gas flow sensor to detect a gas flow rate of the gas exiting the building
Data Source
AI summary
An example system for measuring emissions from a building includes a housing, a plurality of sensors arranged in the housing to detect concentrations of gas constituents in gas exiting the building, a gas flow sensor to detect a gas flow rate of the gas exiting the building, and a computing device to perform functions of calculating a total emissions of the particular gas constituent being tracked from a concentration of the particular gas constituent detected by the plurality of sensors and the gas flow rate, calculating an emission rate of the particular gas constituent being tracking, determining whether the total emissions and the emission rate of the particular gas constituent are within acceptable ranges, and based on the total emissions and the emission rate of the particular gas constituent being outside the acceptable ranges, outputting a prompt to a building computer system or operator indicating an alert.