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Title: Coupled optical/thermal/fluid analysis and design requirements for operation and testing of a supercritical CO 2 solar receiver.

Abstract

Recent studies have evaluated closed-loop supercritical carbon dioxide (s-CO 2) Brayton cycles to be a higher energy-density system in comparison to conventional superheated steam Rankine systems. At turbine inlet conditions of 923K and 25 MPa, high thermal efficiency (~50%) can be achieved. Achieving these high efficiencies will make concentrating solar power (CSP) technologies a competitive alternative to current power generation methods. To incorporate a s-CO 2 Brayton power cycle in a solar power tower system, the development of a solar receiver capable of providing an outlet temperature of 923 K (at 25 MPa) is necessary. To satisfy the temperature requirements of a s-CO 2 Brayton cycle with recuperation and recompression, it is required to heat s-CO 2 by a temperature of ~200 K as it passes through the solar receiver. Our objective was to develop an optical-thermal-fluid model to design and evaluate a tubular receiver that will receive a heat input ~1 MWth from a heliostat field. We also undertook the documentation of design requirements for the development, testing and safe operation of a direct s-CO 2 solar receiver. The main purpose of this document is to serve as a reference and guideline for design and testing requirements, as wellmore » as to address the technical challenges and provide initial parameters for the computational models that will be employed for the development of s-CO 2 receivers.« less

Authors:
 [1]
  1. Indian Institute of Science, Bangalor (India)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1177383
Report Number(s):
SAND2015-0436R
562336
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 14 SOLAR ENERGY

Citation Formats

Khivsara, Sagar. Coupled optical/thermal/fluid analysis and design requirements for operation and testing of a supercritical CO2 solar receiver.. United States: N. p., 2015. Web. doi:10.2172/1177383.
Khivsara, Sagar. Coupled optical/thermal/fluid analysis and design requirements for operation and testing of a supercritical CO2 solar receiver.. United States. doi:10.2172/1177383.
Khivsara, Sagar. Thu . "Coupled optical/thermal/fluid analysis and design requirements for operation and testing of a supercritical CO2 solar receiver.". United States. doi:10.2172/1177383. https://www.osti.gov/servlets/purl/1177383.
@article{osti_1177383,
title = {Coupled optical/thermal/fluid analysis and design requirements for operation and testing of a supercritical CO2 solar receiver.},
author = {Khivsara, Sagar},
abstractNote = {Recent studies have evaluated closed-loop supercritical carbon dioxide (s-CO2) Brayton cycles to be a higher energy-density system in comparison to conventional superheated steam Rankine systems. At turbine inlet conditions of 923K and 25 MPa, high thermal efficiency (~50%) can be achieved. Achieving these high efficiencies will make concentrating solar power (CSP) technologies a competitive alternative to current power generation methods. To incorporate a s-CO2 Brayton power cycle in a solar power tower system, the development of a solar receiver capable of providing an outlet temperature of 923 K (at 25 MPa) is necessary. To satisfy the temperature requirements of a s-CO2 Brayton cycle with recuperation and recompression, it is required to heat s-CO2 by a temperature of ~200 K as it passes through the solar receiver. Our objective was to develop an optical-thermal-fluid model to design and evaluate a tubular receiver that will receive a heat input ~1 MWth from a heliostat field. We also undertook the documentation of design requirements for the development, testing and safe operation of a direct s-CO2 solar receiver. The main purpose of this document is to serve as a reference and guideline for design and testing requirements, as well as to address the technical challenges and provide initial parameters for the computational models that will be employed for the development of s-CO2 receivers.},
doi = {10.2172/1177383},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}

Technical Report:

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