CLIMATE APPROPRIATE COOLING FOR A GROCERY STORE: HYBRID UNITARY DOAS SYSTEM IN SAN RAMON, CA

Category: 
Supermarket
Project Number: 
ET12PGE3102
Start Year: 
2012
End Year: 
2015
Markets Segments: 
Commercial
Retail
Project Type: 
Electric Energy Savings
Type of Technology: 
Evaporative Cooling
Organization: 
Pacific Gas and Electric (PG&E)
Project Status: 
Applied Research
Savings Type: 
Work

Project Summary

This report documents a field evaluation of the Munters EPX 5000 installed at a grocery store in San Ramon, CA. The technology studied is an indirect evaporative and vapor compression hybrid dedicated outside air supply (DOAS) system.

This study was performed after a lab assessment of the unit in at PG&E's Applied Technical Services facilities in San Ramon, CA, in collaboration with the Western Cooling Efficiency Center at UC Davis, and in parallel and/or in sequence with four other studies, all of which assessed the performance of RTUs that employ evaporative technologies in different ways or configurations. These studies include:

• A lab assessment of four direct evaporative condenser pre-coolers, and one air supply indirect evaporative pre-cooler.
http://www.etcc-ca.com/reports/laboratory-testing-performance-enhancemen...

• A field assessment at a big box retail store and grocery in Bakersfield, CA of indirect evaporative cooling units from two different manufacturers applied as retrofits to existing RTUs:
http://www.etcc-ca.com/reports/indirect-evaporative-air-conditioners-add...

• A field assessment of indirect evaporative cooling for a mall in Fairfield, CA in which a new RTU was retrofitted with a direct evaporative pre-cooler at the condenser inlet, and a water to air heat exchanger at the ventilation air inlet.
http://www.etcc-ca.com/reports/indirect-evaporative-cooling-shopping-mall

• A field assessment of an indirect evaporative unit, serving as a dedicated outside air supply (DOAS) at a restaurant in Rocklin, CA.
http://www.etcc-ca.com/reports/indirect-evaporative-air-conditioning-res...

• The lab assessment of the Munters hybrid unitary dedicated outside air supply (DOAS) system.
Lab: http://etcc-ca.com/reports/munters-epx-5000-dedicated-outside-air-supply

PDF Report: 
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