Study of ammoniated salts based thermochemical energy storage system with heat up-gradation: A thermodynamic approach

Rakesh Sharma; E. Anil Kumar

doi:10.1016/j.energy.2017.11.015

Study of ammoniated salts based thermochemical energy storage system with heat up-gradation: A thermodynamic approach

Rakesh Sharma
, E. Anil Kumar^*

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

Thermal energy storage (TES) system based on gas–solid interaction is an effective technology to store energy for long duration. TES systems based on ammoniated halide salts are extensively trusted due to availability of halide salts with wide range of thermodynamic properties and low cost. In this work, the thermodynamic analysis of TES system is presented for several working pairs of halide salts using their measured ammonia adsorption/desorption thermodynamic properties. The thermal energy available at wide temperature range of 100–210 °C is stored as ammonia desorption enthalpy of ammoniated salts (MnCl₂, FeCl₂, CaCl₂ and SrCl₂). The energy can be recovered from energy storage material at several temperatures corresponding to different regeneration (desorption) temperatures of regenerating material. The TES system using pair of MnCl₂–CaCl₂ can deliver the thermal energy with a maximum heat up-gradation of 40 °C at regeneration temperature of 120 °C. The maximum energy storage densities are observed to be 1165.61, 1139.51 and 1114.56 kJ kg⁻¹ at 200 °C for the salt pairs of FeCl₂–SrCl₂, FeCl₂–CaCl₂ and FeCl₂–NaBr, respectively. The coefficient of performance of TES system is observed to be maximum for SrCl₂–NaBr pair due to high adsorption capacity of SrCl₂ and low operating temperatures.

Original language	English
Pages (from-to)	1705-1716
Number of pages	12
Journal	Energy
Volume	141
DOIs	https://doi.org/10.1016/j.energy.2017.11.015
Publication status	Published - 15-12-2017

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Modelling and Simulation
Renewable Energy, Sustainability and the Environment
Building and Construction
Fuel Technology
Energy Engineering and Power Technology
Pollution
Mechanical Engineering
General Energy
Management, Monitoring, Policy and Law
Industrial and Manufacturing Engineering
Electrical and Electronic Engineering

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10.1016/j.energy.2017.11.015

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title = "Study of ammoniated salts based thermochemical energy storage system with heat up-gradation: A thermodynamic approach",

abstract = "Thermal energy storage (TES) system based on gas–solid interaction is an effective technology to store energy for long duration. TES systems based on ammoniated halide salts are extensively trusted due to availability of halide salts with wide range of thermodynamic properties and low cost. In this work, the thermodynamic analysis of TES system is presented for several working pairs of halide salts using their measured ammonia adsorption/desorption thermodynamic properties. The thermal energy available at wide temperature range of 100–210 °C is stored as ammonia desorption enthalpy of ammoniated salts (MnCl2, FeCl2, CaCl2 and SrCl2). The energy can be recovered from energy storage material at several temperatures corresponding to different regeneration (desorption) temperatures of regenerating material. The TES system using pair of MnCl2–CaCl2 can deliver the thermal energy with a maximum heat up-gradation of 40 °C at regeneration temperature of 120 °C. The maximum energy storage densities are observed to be 1165.61, 1139.51 and 1114.56 kJ kg−1 at 200 °C for the salt pairs of FeCl2–SrCl2, FeCl2–CaCl2 and FeCl2–NaBr, respectively. The coefficient of performance of TES system is observed to be maximum for SrCl2–NaBr pair due to high adsorption capacity of SrCl2 and low operating temperatures.",

author = "Rakesh Sharma and \{Anil Kumar\}, E.",

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N2 - Thermal energy storage (TES) system based on gas–solid interaction is an effective technology to store energy for long duration. TES systems based on ammoniated halide salts are extensively trusted due to availability of halide salts with wide range of thermodynamic properties and low cost. In this work, the thermodynamic analysis of TES system is presented for several working pairs of halide salts using their measured ammonia adsorption/desorption thermodynamic properties. The thermal energy available at wide temperature range of 100–210 °C is stored as ammonia desorption enthalpy of ammoniated salts (MnCl2, FeCl2, CaCl2 and SrCl2). The energy can be recovered from energy storage material at several temperatures corresponding to different regeneration (desorption) temperatures of regenerating material. The TES system using pair of MnCl2–CaCl2 can deliver the thermal energy with a maximum heat up-gradation of 40 °C at regeneration temperature of 120 °C. The maximum energy storage densities are observed to be 1165.61, 1139.51 and 1114.56 kJ kg−1 at 200 °C for the salt pairs of FeCl2–SrCl2, FeCl2–CaCl2 and FeCl2–NaBr, respectively. The coefficient of performance of TES system is observed to be maximum for SrCl2–NaBr pair due to high adsorption capacity of SrCl2 and low operating temperatures.

AB - Thermal energy storage (TES) system based on gas–solid interaction is an effective technology to store energy for long duration. TES systems based on ammoniated halide salts are extensively trusted due to availability of halide salts with wide range of thermodynamic properties and low cost. In this work, the thermodynamic analysis of TES system is presented for several working pairs of halide salts using their measured ammonia adsorption/desorption thermodynamic properties. The thermal energy available at wide temperature range of 100–210 °C is stored as ammonia desorption enthalpy of ammoniated salts (MnCl2, FeCl2, CaCl2 and SrCl2). The energy can be recovered from energy storage material at several temperatures corresponding to different regeneration (desorption) temperatures of regenerating material. The TES system using pair of MnCl2–CaCl2 can deliver the thermal energy with a maximum heat up-gradation of 40 °C at regeneration temperature of 120 °C. The maximum energy storage densities are observed to be 1165.61, 1139.51 and 1114.56 kJ kg−1 at 200 °C for the salt pairs of FeCl2–SrCl2, FeCl2–CaCl2 and FeCl2–NaBr, respectively. The coefficient of performance of TES system is observed to be maximum for SrCl2–NaBr pair due to high adsorption capacity of SrCl2 and low operating temperatures.

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Study of ammoniated salts based thermochemical energy storage system with heat up-gradation: A thermodynamic approach

Abstract

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