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Title: Hotel gets 9-month payback on HVAC project. [Midtown Holiday Inn, Richmond, VA]

The Midtown Holiday Inn at Richmond, Virginia, recovered its $45,200 investment in heating and cooling modifications in nine months by reducing energy consumption by 43%. Natural gas use was reduced 48% and electricity 25%, while comfort levels were improved. The retrofit involved replacing the old three-pipe design, which traditionally returns both heating and cooling water and is inefficient during fall and spring when both hot and chill water are needed. A new control strategy keeps the chiller and boiler from working simultaneously by alternating the two on 15-minute cycles. The chiller automatically cuts off when outside air goes below 55/sup 0/F, while the boiler shuts off at 75/sup 0/F. (DCK)
Authors:
Publication Date:
OSTI Identifier:
6664521
Resource Type:
Journal Article
Resource Relation:
Journal Name: Energy User News; (United States); Journal Volume: 7:41
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; HOTELS; SPACE HVAC SYSTEMS; PAYBACK PERIOD; ENERGY MANAGEMENT; RETROFITTING; BUILDINGS; COMMERCIAL BUILDINGS; ENERGY SYSTEMS; MANAGEMENT 320104* -- Energy Conservation, Consumption, & Utilization-- Commercial & Industrial Buildings-- (-1987)