Deterministic model for an internal melt ice-on-coil thermal storage tank

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:345217

Neto, J H.M. ^[1]; Krarti, M ^[2]

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1. Centro Federal de Educacao Tecnologica de Minas Gerais, Belo Horizonte, Minas Gerais (Brazil). Dept. of Mechanical Engineering
2. Univ. of Colorado, Boulder, CO (United States). Dept. of Civil, Environmental and Architectural Engineering

A deterministic numerical model, based on a quasi-steady-state approach, is developed for an internal melt ice-on-coil thermal storage tank with a built-in spiral coil tubing heat exchanger having a counterflow configuration and quiescent water around the coils. This model is able to simulate both charging and discharging modes, taking into account the overlapping phenomenon that occurs due to the superposition of the ice layers during freezing as well as the superposition of the water layers during melting. The developed model accounts for the cooldown of the water earlier during the charging period and the warm-up of the water later during the discharging period. The input parameters include the geometric dimensions of the tank, the secondary fluid temperature and its flow rate entering the tank, the number of segments along the coil, and the time step. The model determines the heat transfer rates, the inventory of the ice, and other output parameters such as temperatures and ice/water radius. This model can be used by manufacturers and engineers for design and simulation purposes.

• OSTI ID: 345217
• Report Number(s): CONF-9702141--
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR CONDITIONING
BUILDINGS
HEAT EXCHANGERS
ICE
LATENT HEAT STORAGE
MATHEMATICAL MODELS
SPACE HVAC SYSTEMS
TANKS
THERMAL ENERGY STORAGE EQUIPMENT