Thermal Energy Storage for Cooling of Commercial Buildings (original) (raw)

1989, Energy Storage Systems

The storage of "coolness" has been in use in limited applications for more than a half century. , Recently, because of high electricity costs during utitities' peak power periods, thermal storage for cooling has become a prime target for load management strategies. Systems with cool storage shift ali or part of the electricity requirement from peak to off-peak hours to take advantage of reduced demand charges and/or off-peak rates. Thermal storage technology applies equally to industrial, commercial, and residential sectors. In the industrial sector, because of the lack of economic incentives and the custom design required for each application, the penetration of this technology has been limited to a few industries. The penetration rate in the residential sector has been also very limited due to the absence of economic incentives, sizing problems, and the lack of compact packaged systems. 'To date, the most promising applications of these systems, therefore, appear to be for commercial cooling. In this report, the current and potential use of thermal energy storage systems for cooling commercial buildings is investigated, In addition, a general overview of the technology is presented and the applicability and cost-effectiveness of this technology for developed and developing countries are discussed. KEYWORDS: chilled water storage / commercial cooling/demand-limited storage / electric load management / full storage / ice storage / partial storage / phase change / thermal energy storage / utility incentives.