The successful implementation of solar photovoltaic in California has resulted in a monumental shift of our daily grid net demand profile. So much so, that net demand dips well below historic usage profiles and has shifted our peak demand period from the middle of the day to the evening hours (4:00...

The objective of this study is to examine the energy savings, benefits, and drawbacks of various types of pool heating equipment. A macro-based Excel tool will be developed to conduct an hourly energy, cost, and GHG emissions analysis of five types of pool heating equipment: traditional gas pool...

The proposed project is a field demonstration of an electric clothes dryer controller that can be added onto an existing electric dryer. Previous studies have shown that clothes dryers operate longer than needed even in automatic termination mode, wasting energy and drying time. The proposed...

This project will explore market potential and assess how Fault Managed Power Systems (FMPS) can reduce the barriers to electrification efforts by reducing the complexity and cost of electrical infrastructure upgrades across non-residential (commercial, industrial, and agricultural) customer...

Air source heat pumps for replacing gas-powered water and space heating are a keystone technology in efforts to decarbonize buildings.[1] Heat pumps have the potential to save approximately 60% of total residential heating energy consumption and reduce GHG emissions by 13.1 MMTCO2e if installed in...

Air-to-water heat pumps (AWHPS) have been gaining traction worldwide in countries where hydronic heating is the predominant HVAC option., With the United States increasing national focus on decarbonization of the building sector, the AWHPs market still trails behind other more popular HVAC options....

This proposed CalNEXT project will develop a test method to validate that control programming is consistent with the control sequences in ASHRAE Guideline 36 (G36) High-Performance Sequences of Operation for HVAC Systems. The eventual goal is for the test method to evolve into an ASHRAE standard...

This project evaluates the performance of a production prototype residential three-function heat pump (TFHP) system. TFHPs are called “three function” systems as they utilize a single compressor to serve indoor heating, indoor cooling, and domestic hot water loads. The system evaluated in this...

The purpose of this project was to evaluate the performance of:Centrally ducted variable capacity heat pump (VCHP) systems.Packaged through the wall VCHP systems.Near zero global warming potential (GWP) heating and cooling technologies, including an advanced indirect/direct evaporative cooling...

Mechanical ventilation is becoming more prevalent due to Indoor Air quality (IAQ) concerns, particularly as construction trends move towards tighter envelopes to increase efficiency. Yet there is a tension between providing ventilation to ensure good IAQ and reducing the energy and demand impacts...