Verified® Patented Non-invasive Temperature Dignostic (NTD software
Verified® NTD software uses patented methods to evaluate temperature split (low airflow and low capacity), heat transfer surfaces (condenser and evaporator coils), expansion devices, airflow (CFM), restrictions, non-condensables, refrigerant charge, cooling capacity, and efficiency for residential and commercial units. Verified® NTD software provides accurate refrigerant charge recommendations which saves about 15 to 45 minutes compared to any other system.
Verified® commercial NTD software is used to diagnose outdoor airflow fractions, actuator voltage, economizer functionality, and operation for commercial units.
US Patent US 8,583,384 B2 discloses methods to calculate the energy efficiency improvement for an air conditioning system tune-up and expanded tabular target values for temperature split, relative humidity, enthalpy, and superheat.
US Patent US 9,207,007 B1 discloses methods to diagnose non condensables and restrictions from condenser/evaporator blockage, and refrigerant charge faults. Verified® software quantifies energy efficiency improvement metrics which enable contractors to provide an estimate of energy savings.
US Patent US 7,500,368 B2 discloses a simple yet powerful method to evaluate total cooling system performance by testing temperature split. If the temperature split is within tolerances, then there is no need to hook up refrigerant hoses which will reduce accidentally removing charge or adding non-condensables to the system.
US Patent US 9,797,115 discloses a method to seal the economizer perimeter gap to reduce excess outdoor air ventilation and save 3 to 10% on cooling and heating energy use.
US Patent US 11,029,057 B2 discloses a method for economizer controller calibration to evaluate outdoor airflow, actuator voltage and damper position to establish correct actuator voltage and proper minimum damper position to reduce unintended excess outdoor airflow, increase cooling and heating capacity and save energy.
Pending US Patent discloses a Non-invasive Temperature-based Diagnostic (NTD) method for evaluating Air Conditioning (AC) system faults based on Return-air Drybulb Temperature (RDT), Return-air Wetbulb Temperature (RWT), Supply-air Drybulb Temperature (SDT), Suction Temperature (ST), Liquid Temperature (LT), Outdoor-Air Temperature (OAT), Delta Temperature Split (DTS) equal to Actual Temperature Split (ATS) minus Required Temperature Split (RTS), and Liquid Over Ambient Temperature (LOA) equal to LT minus OAT. The method diagnoses proper Refrigerant Charge and Airflow (RCA) based on DTS and LOA or at least one AC system fault based on DTS, ST, and LOA. The processing order comprises at least one diagnostic selected from the group consisting of: low cooling capacity, condenser heat exchanger, refrigerant restriction, evaporator heat exchanger, proper RCA, refrigerant undercharge, overcharge, non-condensables, and low airflow. DTS is used to determine an undercharge amount. The ratio of ATS measured before and after correcting AC system faults is used to calculate an energy-efficiency improvement.
These US patents disclose algorithms for detecting and diagnosing proper airflow, refrigerant system faults and calculating the correct amount of refrigerant charge to be added to or removed from the cooling system for optimal performance.
The Verified® NTD software has been tested at Intertek an AHRI certification laboratory. The Verified® NTD software average fault detection accuracy was 90 +/- 2% based on 736 tests of faults causing low airflow or low capacity.
Verified® VSP Software Cost for PG&E ESA Program
These costs are the same unit costs contractors currently pay for VSP services performed in the AC Tune-up Programs.
The Verified® unit costs include.
All NTD software and database research and development
Technician training and technical support services for participating contractors and their technicians
Technician retraining (if necessary)
Customer support
Quality control field inspections if required.
Secure-Cloud Verified® NTD Software
Verified® secure cloud-based local stand-alone software application
Verified® secure cloud-based local stand-alone software application. Verified® local stand-alone software application does not require an internet connection for technicians to enter data and perform work. Verified® provides user-friendly expert-system software to guide technicians through the AC tune-up process to easily and quickly enter data, diagnose problems, make corrections, and verify all required tasks are properly completed. Verified® NTD job data is uploaded to the secure-cloud internet server automatically to track and quality control check field data. Data for each Verified® NTD job are archived on the secure-cloud internet server database. Ride-along training and supplemental QC training of jobs are performed for QA and QC.
Verified® NTD software includes the following steps.
1) Secure-cloud database to retrieve records retrieve records from customer databases to the Verified® secure-cloud server for contractors to access using Verified® internet software,
2) Contractor scheduler Verified® secure-cloud internet software is used to schedule jobs and send data to technicians and add appointment times, notes, or other information,
3) Verified® local NTD software application used by technicians to enter LRM and NTD data, diagnose faults, and QC job data in real-time,
4) Data processing using Verified® secure-cloud internet software to process technician job data for invoice submittals to customers,
5) Verified® secure-cloud internet software to send job data to contractors for payroll.
All NTD data pertaining to heat pumps and air conditioners as specified in Sections 4 and 32 of the IS Manual will be collected, evaluated, and verified by Verified® Inc., a Verification Service Provider (VSP). Verified® will meet specific program diagnostic data requirements using its patented NTD software.