This study demonstrated how existing constant air volume (CAV) RTUs may approximate a variable air volume (VAV) system to increase efficiency and comfort for the building’s occupants. Given that 60% of the U.S. commercial floor space is served by CAV RTUs, these dynamic air balancing systems...

Pacific Gas and Electric Company (PG&E) implemented a Zero Net Energy (ZNE) Production Builder Demonstration that supported six builders in California in designing and monitoring a ZNE house. Each builder received technical support from start to finish to upgrade one of their existing...

This project created algorithms predicting the performance of drain water heat recovery devices as a function of their installed angle. The algorithms use the same process as previous Pacific Gas and Electric (PG&E) drain water heat recovery projects1. Four representative DWHR devices, two...

Under the auspices of PG&E’s Zero Net Energy (ZNE) Production Builder Demonstration, De Young Properties built a 2,019 square foot ZNE home in Clovis, CA. This report describes the results from monitoring the occupied home for a full year.The ZNE definition used for the design was based...

As part of PG&E’s Zero Net Energy (ZNE) Pilot Program, De Young Properties designed and built a single story 2,064 square foot single family home located in Clovis, CA. It was built in 2013 and used as a model home until 2018 when it became occupied. All loads were monitored for the first...

Laboratory refrigeration has not been extensively studied, with the exception of ULT freezers. The largest insight into the energy savings potential comes from the ENERGY STAR Product Specification for Laboratory Grade Refrigerators and Freezers, published in 2016. Data from 14 different freezer...

The first phase of the SIM Home project discussed the potential effects of variations in user behavior on estimates of energy consumption for plug load devices. Three types of variations were explored: (1) the duration or number of times per day the device is used, (2) the frequency or periodicity...

A compact, Bluetooth enabled, inline digital natural gas flow meter has entered the market, with two models anticipated for 2018 market entry (Table 1.)  Both models can be installed in tight spaces and do not require venting.  The submeters are represented as being pressure independent...

The purpose of this Demand Response Emerging Technology (DRET) Assessment is to confirm that, in a laboratory setting, end-use energy consumption by certain appliances can be automatically controlled by a combination of: (1) a frequently changing (every 5 minutes) GHG intensity signal based on...

Strategic approach to optimize aeration efficiency in wastewater recovery facilities to significantly reduce blower(s) usage and provide demand response...