A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping Mechanism
This paper provides an illustrated description of a proposed LiBr-H2O vapour absorption refrigerator which uses a thermally activated solution pumping mechanism that combines controlled variations in generator vapour pressure with changes it produces in static-head pressure difference to circulate t...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-02-01
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| Series: | Entropy |
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| Online Access: | http://www.mdpi.com/1099-4300/19/3/90 |
| _version_ | 1817987899709194240 |
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| author | Ian W. Eames |
| author_facet | Ian W. Eames |
| author_sort | Ian W. Eames |
| collection | DOAJ |
| description | This paper provides an illustrated description of a proposed LiBr-H2O vapour absorption refrigerator which uses a thermally activated solution pumping mechanism that combines controlled variations in generator vapour pressure with changes it produces in static-head pressure difference to circulate the absorbent solution between the generator and absorber vessels. The proposed system is different and potentially more efficient than a bubble pump system previously proposed and avoids the need for an electrically powered circulation pump found in most conventional LiBr absorption refrigerators. The paper goes on to provide a sample set of calculations that show that the coefficient of performance values of the proposed cycle are similar to those found for conventional cycles. The theoretical results compare favourably with some preliminary experimental results, which are also presented for the first time in this paper. The paper ends by proposing an outline design for an innovative steam valve, which is a key component needed to control the solution pumping mechanism. |
| first_indexed | 2024-04-14T00:27:14Z |
| format | Article |
| id | doaj.art-34f8670cbc664c18ae4c5bfb32d19ed4 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-14T00:27:14Z |
| publishDate | 2017-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-34f8670cbc664c18ae4c5bfb32d19ed42022-12-22T02:22:40ZengMDPI AGEntropy1099-43002017-02-011939010.3390/e19030090e19030090A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping MechanismIan W. Eames0Department of Mechanical Materials and Manufacturing Engineering, University of Nottingham, Nottingham NG7 2RD, UKThis paper provides an illustrated description of a proposed LiBr-H2O vapour absorption refrigerator which uses a thermally activated solution pumping mechanism that combines controlled variations in generator vapour pressure with changes it produces in static-head pressure difference to circulate the absorbent solution between the generator and absorber vessels. The proposed system is different and potentially more efficient than a bubble pump system previously proposed and avoids the need for an electrically powered circulation pump found in most conventional LiBr absorption refrigerators. The paper goes on to provide a sample set of calculations that show that the coefficient of performance values of the proposed cycle are similar to those found for conventional cycles. The theoretical results compare favourably with some preliminary experimental results, which are also presented for the first time in this paper. The paper ends by proposing an outline design for an innovative steam valve, which is a key component needed to control the solution pumping mechanism.http://www.mdpi.com/1099-4300/19/3/90thermally activated pumpabsorption refrigeration cyclecoolingrefrigeratorthermodynamics |
| spellingShingle | Ian W. Eames A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping Mechanism Entropy thermally activated pump absorption refrigeration cycle cooling refrigerator thermodynamics |
| title | A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping Mechanism |
| title_full | A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping Mechanism |
| title_fullStr | A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping Mechanism |
| title_full_unstemmed | A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping Mechanism |
| title_short | A LiBr-H2O Absorption Refrigerator Incorporating a Thermally Activated Solution Pumping Mechanism |
| title_sort | libr h2o absorption refrigerator incorporating a thermally activated solution pumping mechanism |
| topic | thermally activated pump absorption refrigeration cycle cooling refrigerator thermodynamics |
| url | http://www.mdpi.com/1099-4300/19/3/90 |
| work_keys_str_mv | AT ianweames alibrh2oabsorptionrefrigeratorincorporatingathermallyactivatedsolutionpumpingmechanism AT ianweames librh2oabsorptionrefrigeratorincorporatingathermallyactivatedsolutionpumpingmechanism |