Methods and systems for automated HVAC testing
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Solution Overview
Problem
Facilities managers face challenges in predicting when energy-consuming devices, such as HVAC units, will stop working, leading to potential malfunctions and increased energy consumption, as existing methods require costly and disruptive routine maintenance inspections.
Innovation Solution
An energy management system (EMS) is used to automate testing of HVAC units by setting them to different modes and stages, taking temperature and power snapshots, and determining rate of change to identify operational issues and schedule maintenance, allowing for remote comparison and notification of potential malfunctions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If routine preventative maintenance inspections are performed by technicians, then device reliability is improved, but cost and operational disruption increase
Solution Approach 1:
The HVAC system performs self-diagnostics by automatically monitoring its own operational parameters (temperatures, pressures, power consumption) and comparing them against expected ranges. The system can detect anomalies and trigger maintenance alerts without requiring external technician inspections, thereby maintaining reliability while eliminating the complexity and disruption of manual maintenance schedules
Solution Approach 2:
The system continuously collects feedback from sensors monitoring HVAC operation and uses this data to assess system health in real-time. By analyzing trends in temperature differentials, power consumption patterns, and operational cycles, the system provides ongoing feedback about device condition, enabling predictive maintenance that improves reliability without requiring routine manual inspections
2Reliability
If facilities managers manually monitor HVAC units, then operational issues are detected, but time and labor resources are consumed
Solution Approach 1:
Manual monitoring activities are replaced with automated electronic monitoring systems that continuously collect and analyze HVAC operational data. Sensors and controllers automatically track temperature, pressure, power consumption, and operational status, eliminating the need for facilities managers to manually inspect units while providing more accurate and continuous detection of operational issues
Solution Approach 2:
An automated monitoring system acts as an intermediary between the HVAC equipment and facilities managers. This intermediary continuously gathers data from sensors, processes information through analysis algorithms, and presents consolidated reports to managers, thereby detecting operational issues accurately while freeing managers from direct monitoring activities and reducing their time commitment
3Loss of energy
If multiple HVAC units are operated without individual monitoring, then energy consumption increases, but system complexity increases
Solution Approach 1:
A single automated monitoring platform is designed to universally manage multiple HVAC units simultaneously. The system uses standardized protocols and interfaces to collect data from various units, applies consistent analysis algorithms across all devices, and provides centralized control capabilities. This multi-functional approach enables individual monitoring of multiple units without proportionally increasing system complexity, thereby optimizing energy consumption across the entire HVAC fleet
Data Source
AI summary
The invention involves the automated testing of HVAC units using an energy management system. The automated HVAC test is performed to understand if one or more HVAC units are operational across one or more locations. If an HVAC unit is not operational, HVAC testing could be performed to understand which component or stage of the HVAC unit is not working as designed. The automated HVAC test is also used to calculate the efficiency of the HVAC unit(s) being tested. The various HVAC tests are performed on all HVAC units as a form of preventative maintenance and diagnostics. These tests can be scheduled on-demand, for a future date and time, or on a recurring schedule (monthly or quarterly). A report is generated for each HVAC test and can be viewed and exported from a cloud-based energy management platform.