The Problems of Verification in Building Energy Retrofits

When Energy Service Companies making HVAC (Heating, Ventilation and Air Conditioning) retrofits , VFDs(Variable Frequency Drive) need to be added, and the chillers will be replaced with high-efficiency ones.

Due to the changes of temperature, humidity, operating hours and other factors, it is impossible to calculate the accurate power consumption of the new equipment from the bill.

Power monitoring must under M&V (Measurement and Verification) protocols. Baseline measurements need to be recorded from the feeder of the equipment before the existing equipment is replaced.

90-Day Temporary Deployment Framework

We recommend to use our portable suitcase kit to compare the data, which is equipped with a wireless three-phase power meter(Acrel ADW300 ↗), built-in 4G module and pre-wired split-core CTs ↗. It follows a 90-day deployment framework.

• Phase 1 (Pre-Retrofit, 30 Days): Engineers clip the split-core CTs onto the feeders of existing chillers or motors. And the device is powered from control voltage, we do not need to disconnect the cable. It records real-time data like kW, kWh, power factor and so on.
• Phase 2 (Post-Retrofit, 60 Days): After commissioning of the new equipment, the kit continues logging under the same operating schedule to capture seasonal weather variations and part-load conditions.
• Phase 3 (Report Export & Relocation):Reports can be generated and exported directly via the cloud platform. There is no requirement for engineers to attend site to retrieve or download raw measurement data. All the collected energy data can be viewed through web or mobile application.

On Site Installation & Metering

This kit mainly resolves the difficulties of installation and network configuration on site.

• Quick Installation:Split-core CTs are clipped directly onto existing insulated cables. The unit is quick to install. It saves labour time and reduces chiller downtime.
• IoT Transmission: The device has a built-in 4G SIM card and uploads data to the cloud via MQTT without requiring on-site Wi-Fi access, IP setup or RS-485 termination commissioning.
• Direct Dashboard Verification: Engineers can log in to the cloud platform ↗ and view real-time electrical parameters collected by the meter, including key metrics such as kWh, active power and power factor.

Application: Energy Audit & Retrofit Verification

Control the measurement costs during energy audits.

• Energy Audit: Tracing energy consumption from the source of the bill, checking the compliant of the meters, verifying the completeness of data and calculating the consumption of energy.
• Retrofit Verification (IPMVP Option B):It does targeted M&V monitoring on retrofitted equipment like chillers and pumps.It also supplies measured data for project acceptance.

Commercial Cooperation & Cloud Platform Hosting

This solution is efficient on site and it can bring long-term service income.

• Portable hardware delivery: Supply pre-assembled ADW300 ↗ / ADW310 ↗ portable logging kits with split-core CTs of different ratings.
• Cloud platform hosting service:We provide continuous IOT platform hosting service ↗ and report support. For instance, many overseas building energy service providers install our wireless energy meters(ADW300) in batches. They pay for the platform annually to storage and management for different projects.