Comparison of Model Predictions and Performance Test Data for a Prototype Thermal Energy Storage Module
| Autor: | Navin Kumar, Michael F. Stoia, Van P. Carey, Debjyoti Banerjee, Arun Muley, Dre Helmns |
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| Rok vydání: | 2019 |
| Předmět: |
heat energy generation
energy conversion Materials science Power station energy systems analysis 020209 energy Nuclear engineering Resources Engineering and Extractive Metallurgy chemistry.chemical_element Energy Engineering and Power Technology 02 engineering and technology Thermal energy storage Civil Engineering Energy storage storage 020401 chemical engineering Electrical resistance and conductance Affordable and Clean Energy Geochemistry and Petrology Heat exchanger 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Maritime Engineering Energy Renewable Energy Sustainability and the Environment Mechanical Engineering Subcooling Fuel Technology chemistry systems Lithium energy storage systems transfer Test data |
| Zdroj: | Journal of Energy Resources Technology, vol 143, iss 2 |
| Popis: | Although model predictions of thermal energy storage (TES) performance have been explored in several previous investigations, information that allows experimental validation of performance models has been very limited. This is particularly true for high-performance TES designs that facilitate fast input and extraction of energy. In this paper, we present a summary of performance tests of a high-performance TES unit using lithium nitrate trihydrate phase change material (PCM) as a storage medium. Our experimental program also included thorough property determinations and cyclic testing of the PCM. Performance data is presented for complete dual-mode cycles consisting of extraction (melting) followed by charging (freezing). These tests simulate the daylong cyclic operation of a TES unit for asynchronous cooling in a power plant. The model analysis is found to agree very well, within 10%, with the experimental data except for conditions very near the initiation of freezing. Slight deviation from the predicted performance at that time is a consequence of sub-cooling that is required to initiate solidification. The comparisons presented here demonstrate the viability of thermal energy storage for augmentation of power plant air-cooled condensers as well as other potential applications. |
| Databáze: | OpenAIRE |
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