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Engineering Laboratory / Building Energy & Environment Division

HVAC&R Equipment Performance Group

Projects/Programs

Displaying 1 - 6 of 6
heatpump fan

Fault Detection and Diagnostics for Air-Conditioners and Heat Pumps

Ongoing
Objective Develop fault detection and diagnostic (FDD) methods and measurement tools to ensure air conditioners (ACs) and heat pumps (HPs) perform as designed throughout their lifetime and develop a testing and rating methodology to assess relative merits of different commercial FDD products

Flammability Metrics for New Low-GWP Refrigerants

Completed
Objective: To develop the capability to measure and predict the burning velocity of mixtures of low-Global Warming Potential (GWP) refrigerants to allow the ranking of the mixtures in terms of their flammability, to assist in the selection and implementation of the best replacements for high-GWP
Researchers use novel fluids with nanoparticles to improve the efficiency of chillers that cool large buildings.

Low-GWP Refrigerants for High-Efficiency HVAC&R Equipment

Completed
Objective - To develop heat transfer and system performance information that will assist in the selection and implementation of the best replacements for high-GWP hydrofluorocarbon (HFC). What is the new technical idea? Most of the currently used HFC refrigerants will be phased out or phased down

Next Generation Refrigerants for High-Efficiency HVAC&R Equipment

OBJECTIVE: To develop heat transfer, flammability, and system performance information that will assist in the selection and implementation of the best replacements for existing legacy refrigerants that will be phased down per the Kigali agreement. TECHNICAL IDEA: The existing HFC refrigerants will
Measurement of the air velocity profile exiting a section of the rooftop air-conditioning unit's heat exchanger

Space-Conditioning Options for High-Performance Buildings

Ongoing
Objective Develop and deploy the measurement science to support the implementation of cost-effective space-conditioning options for high-performance buildings. Technical Idea The unique aspects of high-efficiency homes require new solutions for space-conditioning equipment. Because of tighter
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