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| Title: | Improving discharge characteristics of indirect integral collector storage systems with multi-element storage |
| Author (s): | Boies, A.M. Homan, Kelly |
| Department/Lab Affiliations: | Mechanical & Aerospace Engineering Space Systems Engineering |
| Keywords: | Heat exchanger Storage volume Temperature limited performance Thermal storage |
| Subject Terms: | Heat storage devices. |
| Issue Date: | 2004 |
| Publisher: | American Society of Mechanical Engineers |
| Citation: | A.M. Boies and K.O. Homan. Improving discharge characteristics of indirect integral collector storage systems with multi-element storage. 2004 International Solar Energy Conference. Paper ISEC2004-65188. |
| Abstract: | Desired performance of unpressurized integral collector storage systems hinges on the appropriate selection of storage volume and the immersed heat exchanger. This paper presents analytical results expressing the relation between storage volume, number of heat exchanger transfer units and temperature limited performance. For a system composed of a single storage element, the limiting behavior of a perfectly stratified storage element is shown to be superior to a fully-mixed storage element, consistent with more general analysis of thermal storage. Since, however, only the fully-mixed limit is readily obtainable in a physical system, the present paper also examines a division of the storage volume into separate compartments. This multi-element storage system shows significantly improved discharge characteristics as a result of improved elemental area utilization and temperature variation between elements, comparable in many cases to a single perfectly-stratified storage element. In addition, the multi-element system shows increased robustness with respect to variations in heat exchanger effectiveness and initial storage temperature. |
| Type: | Article - Journal text |
| In Title: | 2004 International Solar Energy Conference July 2004, Portland, Oregon USA (ISEC2004) |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: |
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| title | Improving discharge characteristics of indirect integral collector storage systems with multi-element storage |
| contributor.author | Boies, A.M. |
| contributor.author | Homan, Kelly |
| contributor.deptlab | Mechanical & Aerospace Engineering |
| contributor.deptlab | Space Systems Engineering |
| subject | Heat exchanger |
| subject | Storage volume |
| subject | Temperature limited performance |
| subject | Thermal storage |
| subject.LCSH | Heat storage devices. |
| date.issued | 2004 |
| publisher | American Society of Mechanical Engineers |
| identifier.citation | A.M. Boies and K.O. Homan. Improving discharge characteristics of indirect integral collector storage systems with multi-element storage. 2004 International Solar Energy Conference. Paper ISEC2004-65188. |
| identifier.pub.URI | |
| description.abstract | Desired performance of unpressurized integral collector storage systems hinges on the appropriate selection of storage volume and the immersed heat exchanger. This paper presents analytical results expressing the relation between storage volume, number of heat exchanger transfer units and temperature limited performance. For a system composed of a single storage element, the limiting behavior of a perfectly stratified storage element is shown to be superior to a fully-mixed storage element, consistent with more general analysis of thermal storage. Since, however, only the fully-mixed limit is readily obtainable in a physical system, the present paper also examines a division of the storage volume into separate compartments. This multi-element storage system shows significantly improved discharge characteristics as a result of improved elemental area utilization and temperature variation between elements, comparable in many cases to a single perfectly-stratified storage element. In addition, the multi-element system shows increased robustness with respect to variations in heat exchanger effectiveness and initial storage temperature. |
| type | Article - Journal |
| type.DCMIType | text |
| type.status | Final version |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights.URI | |
| relation.isPartOf | 2004 International Solar Energy Conference July 2004, Portland, Oregon USA (ISEC2004) |
| date.accessioned | 2007-04-11T17:00:48Z |
| date.available | 2008-05-16T18:46:33Z |
| identifier.persist.URI |