Cost optimal analysis and load shifting potentials of cold storage equipment

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:211825

Kintner-Meyer, M ^[1]; Emery, A F ^[2]

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1. Science Applications International Corp., McLean, VA (United States)
2. Univ. of Washington, Seattle, WA (United States). Dept. of Mechanical Engineering

Cold storage systems are sized on the basis of economic considerations and constraints imposed by the cooling system components. In this study, a cost optimal analysis is presented for sizing cold storage equipment and a chiller. The analysis is based on life-cycle costs with energy rates for the City of Seattle. The optimal operating protocol for storage charging and discharging is determined by a dynamic programming method that minimizes the operating cost over an entire year. A sensitivity analysis is presented to provide insights into the importance of electricity rates and demand charges as they affect the optimal size of the storage and the chiller. Due to the extensive computation times for a whole year`s optimization, a reduction of the time horizon was investigated. The paper also discusses the economics of reducing the electric power demand during peak periods in terms of the reduction of peak electric power (kW) and electric energy (kWh). The paper will discuss the incremental cost for implementing full storage operation in which the entire cooling load is produced during off-peak hours.

• OSTI ID: 211825
• Report Number(s): CONF-950624--
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COLD STORAGE
ECONOMICS
ELECTRIC UTILITIES
LOAD MANAGEMENT
THERMAL ENERGY STORAGE EQUIPMENT