ERV Monitoring and Reporting for Power and Maintenance Tracking

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Solution Overview

Problem

Energy recovery ventilators (ERVs) often fail to deliver promised benefits due to inadequate servicing, and there is a need for improved monitoring and reporting systems to track power consumption and maintenance needs effectively, especially with increasing fresh-air ventilation requirements in commercial buildings.

Innovation Solution

A system and method that utilize a processor, memory, and commissioning database to monitor and report ERV power consumption and service needs, employing sensors to gather data and generate alerts for maintenance, while also allowing for real-time tracking and logging of performance, with a unique enthalpy wheel configuration that minimizes airflow distribution effects and reduces costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of energy

If ERVs are installed to capture energy from exhaust air and transfer waste heat to outside air intake, then energy recovery effectiveness is improved, but device complexity increases due to the need for monitoring and reporting systems

Engineering Contradiction:
Improvewaste heat recoveryVSAvoidmonitoring and reporting system
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The monitoring system is designed to perform multiple functions including tracking power consumption, monitoring service needs, logging performance data, and generating alerts. This multi-functional approach consolidates what could be separate systems into one integrated solution, managing complexity while providing comprehensive ERV performance tracking

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system automatically monitors and reports on its own operational status and the ERV's performance without requiring external intervention. The processor carries out monitoring functions autonomously based on sensor data, and the system self-diagnostics service and maintenance needs, reducing the burden on operators while maintaining energy recovery effectiveness

Inventive Principle:
Principle #25Self-service

2Reliability

If comprehensive monitoring and reporting functions are implemented to track ERV performance, then reliability of benefit delivery is improved, but device complexity increases

Engineering Contradiction:
Improveservice delivery reliabilityVSAvoidmonitoring system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system continuously collects sensor data and provides feedback through reports and alerts about ERV performance, power consumption, and maintenance needs. This feedback mechanism ensures reliable benefit delivery by keeping operators informed of system status and enabling timely interventions, while the automated nature of the feedback reduces operational complexity

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system proactively identifies and reports service and maintenance needs before equipment failure occurs. By monitoring parameters and predicting maintenance requirements in advance, the system ensures reliable operation while simplifying maintenance planning and reducing emergency service calls

Inventive Principle:
Principle #10Preliminary action

3Measurement precision

If sensors and data logging are used to track power consumption and performance, then measurement precision is improved, but device complexity increases

Engineering Contradiction:
Improvepower consumption measurementVSAvoidsensor and data storage system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system replaces manual measurement and recording methods with automated electronic sensors and digital data logging. processors automatically collect, store, and analyze sensor data, providing precise power consumption measurements and performance tracking without the complexity of manual measurement systems

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

4Loss of energy

If enthalpy wheels are used for energy transfer, then energy recovery effectiveness is improved, but manufacturing cost increases

Engineering Contradiction:
Improveheat transfer efficiencyVSAvoidmanufacturing cost
Core Design Contradiction:
Loss of energyVSEase of manufacture

Solution Approach 1:

The enthalpy wheel system is divided into separate offset and overlapping wheel components that can be manufactured independently and then assembled. This segmentation allows for optimized manufacturing of individual wheels while maintaining the overall energy transfer effectiveness of the complete system

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The offset and overlapping enthalpy wheels are nested within the ERV housing in a compact arrangement. This nesting configuration maintains effective energy transfer while optimizing space utilization and potentially reducing overall system manufacturing costs through efficient packaging and assembly

Inventive Principle:
Principle #7Nested doll (Nesting)

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 effectively extends the lifespan of ERVs, justifies their use, and demonstrates energy savings by providing accurate performance data, while the enthalpy wheel configuration maintains energy recovery effectiveness and reduces installation and servicing costs.

Implementation Method 1

ERVs are used to capture energy from the exhaust air stream and through the use of enthalpy-wheels it transfers a large portion of the waste heat back into outside air intake stream

Methodology Applied
Scientific EffectHeat exchange: Heat Exchanger

Data Source

PatentUS9206991B2System and method for monitoring and reporting energy recovery ventilator power consumption and service and maintenance needs
Publication Date: 2015.12.08 LENNOX IND INC
  • US9206991B2 patent drawing
  • US9206991B2 patent drawing
  • US9206991B2 patent drawing

AI summary

A system for, and method of, monitoring and reporting ERV power consumption and service and maintenance needs. In one embodiment, the system includes: (1) a processor configured to carry out a plurality of monitoring and reporting functions related to ERV power consumption and service and maintenance needs based on a model, and types and locations of sensors, of the ERV, (2) a memory coupled to the processor and configured to store data gathered from the sensors and (3) a commissioning database associated with the memory and configured to contain commissioning data regarding the model of the ERV and the service and maintenance needs.