Chillers energy consumption, energy savings and emission analysis in an institutional buildings
Chillers consume more than 40 of the total energy used in the commercial and industrial buildings for space conditioning. In this paper, energy consumption by chillers and chilled water pumps, condenser pumps and fan motors has been estimated using data collected by a walkthrough energy audit for th...
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| Format: | Article |
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Energy
2011
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| _version_ | 1796945443725246464 |
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| author | Saidur, Rahman Hasanuzzaman, M. Mahlia, T.M.I. Rahim, N.A. Mohammed, H.A. |
| author_facet | Saidur, Rahman Hasanuzzaman, M. Mahlia, T.M.I. Rahim, N.A. Mohammed, H.A. |
| author_sort | Saidur, Rahman |
| collection | UM |
| description | Chillers consume more than 40 of the total energy used in the commercial and industrial buildings for space conditioning. In this paper, energy consumption by chillers and chilled water pumps, condenser pumps and fan motors has been estimated using data collected by a walkthrough energy audit for the 16 faculties of the University of Malaya. It has been estimated that chillers and motors and pumps used in chillers consume 10,737 MWh (i.e. 51 of total energy consumption) of electric energy for different percentage of loadings. As chillers are major energy users, variable speed drives are applied in chillers to reduce their energy consumption. It has been estimated that about 8368 MWh annual energy can be saved by using efficient chillers at different loadings. It has also been found that about 23,532 MWh annual energy can be saved for chilled water supply pumps, condenser pumps and cooling tower fan motors by matching required speeds using variable speed drives for 60 of speed reduction. About 1,274,692 kg of CO2 emission could be avoided for using energy efficient chillers at 50 load. It has been also found that about 2,426,769 kg CO2 emission can be reduced by using variable speed drives for 60 speed reductions. Payback periods found to be only few months for using variable speed drives in chilled water pumps, condensers and fan motors. |
| first_indexed | 2024-03-06T05:16:44Z |
| format | Article |
| id | um.eprints-6614 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:16:44Z |
| publishDate | 2011 |
| publisher | Energy |
| record_format | dspace |
| spelling | um.eprints-66142019-10-25T06:19:40Z http://eprints.um.edu.my/6614/ Chillers energy consumption, energy savings and emission analysis in an institutional buildings Saidur, Rahman Hasanuzzaman, M. Mahlia, T.M.I. Rahim, N.A. Mohammed, H.A. TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Chillers consume more than 40 of the total energy used in the commercial and industrial buildings for space conditioning. In this paper, energy consumption by chillers and chilled water pumps, condenser pumps and fan motors has been estimated using data collected by a walkthrough energy audit for the 16 faculties of the University of Malaya. It has been estimated that chillers and motors and pumps used in chillers consume 10,737 MWh (i.e. 51 of total energy consumption) of electric energy for different percentage of loadings. As chillers are major energy users, variable speed drives are applied in chillers to reduce their energy consumption. It has been estimated that about 8368 MWh annual energy can be saved by using efficient chillers at different loadings. It has also been found that about 23,532 MWh annual energy can be saved for chilled water supply pumps, condenser pumps and cooling tower fan motors by matching required speeds using variable speed drives for 60 of speed reduction. About 1,274,692 kg of CO2 emission could be avoided for using energy efficient chillers at 50 load. It has been also found that about 2,426,769 kg CO2 emission can be reduced by using variable speed drives for 60 speed reductions. Payback periods found to be only few months for using variable speed drives in chilled water pumps, condensers and fan motors. Energy 2011 Article PeerReviewed Saidur, Rahman and Hasanuzzaman, M. and Mahlia, T.M.I. and Rahim, N.A. and Mohammed, H.A. (2011) Chillers energy consumption, energy savings and emission analysis in an institutional buildings. Energy, 36 (8). pp. 5233-5238. ISSN 0360-5442, DOI https://doi.org/10.1016/j.energy.2011.06.027 <https://doi.org/10.1016/j.energy.2011.06.027>. http://ac.els-cdn.com/S0360544211004129/1-s2.0-S0360544211004129-main.pdf?_tid=9c243504-4023-11e2-a2de-00000aab0f02&acdnat=1354853426_2d3d22bd7a3c21fe2849d67da73e15ca 10.1016/j.energy.2011.06.027 |
| spellingShingle | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery Saidur, Rahman Hasanuzzaman, M. Mahlia, T.M.I. Rahim, N.A. Mohammed, H.A. Chillers energy consumption, energy savings and emission analysis in an institutional buildings |
| title | Chillers energy consumption, energy savings and emission analysis in an institutional buildings |
| title_full | Chillers energy consumption, energy savings and emission analysis in an institutional buildings |
| title_fullStr | Chillers energy consumption, energy savings and emission analysis in an institutional buildings |
| title_full_unstemmed | Chillers energy consumption, energy savings and emission analysis in an institutional buildings |
| title_short | Chillers energy consumption, energy savings and emission analysis in an institutional buildings |
| title_sort | chillers energy consumption energy savings and emission analysis in an institutional buildings |
| topic | TA Engineering (General). Civil engineering (General) TJ Mechanical engineering and machinery |
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