In this study, a concept of using a vapor compression heat pump for recovering and upgrading waste heat of an air-conditioner has been presented. R-290 has been selected due to its high efficiency and the environmental impact. R-290 heat pump at heating capacity 3 kW has been constructed to recover waste heat from the discharge refrigerant leaving compressor of R-134a air-conditioner at cooling capacity 1 TR. From the study results, it could be seen that the modified unit gives better EERAC when the cooling water does not over 43 ºC. A set of simplified model has been developed to predict the system performance and the simulated results agree quite well with the measured data. Moreover, profile of hot water consumption in the department of children's hospital room, Maharaj Nakorn Chiang Mai Hospital is chosen to study. It was found that the hospital requires hot water is 0.815 m3/d at 50 ºC temperature, one unit of R-290 heat pump is enough to generate hot water with the economic results of saving cost and payback period around 765.46 USD/y and 1.97 y, respectively.
| Published in |
International Journal of Sustainable and Green Energy (Volume 4, Issue 1-1)
This article belongs to the Special Issue Renewable Energy Applications in the Agricultural Field and Natural Resource Technology |
| DOI | 10.11648/j.ijrse.s.2015040101.18 |
| Page(s) | 50-56 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2015. Published by Science Publishing Group |
Air-Conditioner, Vapor Compression Heat Pump, Performance Curve, Heat Recovery, Spiral Coil Tank
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| [2] | N. Chaiyat, T. Kiatsiriroat, “Recovering and upgrading waste heat of air-conditioner by combining R-123 vapor compression heat pump,” In: Proceeding of the 9th Conference on Energy Heat and Mass Transfer in Thermal Equipment, Prachuap Khiri Khan, Thailand, March 11–12, 2010. |
| [3] | F. S. Singharajwarapan, N. Chaiyat, “Vapor compression heat pump using low temperature geothermal water: A case study of northern Thailand”, In: Proceeding of the 10th Asian Geothermal Symposium, Tagaytay, Philippines, September 22–24, 2013. |
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APA Style
Nattaporn Chaiyat, Natthawud Dussadee. (2015). R-290 Vapor Compression Heat Pump for Recovering and Upgrading Waste Heat of Air-Conditioner by Using Spiral Coil Tank. International Journal of Sustainable and Green Energy, 4(1-1), 50-56. https://doi.org/10.11648/j.ijrse.s.2015040101.18
ACS Style
Nattaporn Chaiyat; Natthawud Dussadee. R-290 Vapor Compression Heat Pump for Recovering and Upgrading Waste Heat of Air-Conditioner by Using Spiral Coil Tank. Int. J. Sustain. Green Energy 2015, 4(1-1), 50-56. doi: 10.11648/j.ijrse.s.2015040101.18
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Download@article{10.11648/j.ijrse.s.2015040101.18,
author = {Nattaporn Chaiyat and Natthawud Dussadee},
title = {R-290 Vapor Compression Heat Pump for Recovering and Upgrading Waste Heat of Air-Conditioner by Using Spiral Coil Tank},
journal = {International Journal of Sustainable and Green Energy},
volume = {4},
number = {1-1},
pages = {50-56},
doi = {10.11648/j.ijrse.s.2015040101.18},
url = {https://doi.org/10.11648/j.ijrse.s.2015040101.18},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijrse.s.2015040101.18},
abstract = {In this study, a concept of using a vapor compression heat pump for recovering and upgrading waste heat of an air-conditioner has been presented. R-290 has been selected due to its high efficiency and the environmental impact. R-290 heat pump at heating capacity 3 kW has been constructed to recover waste heat from the discharge refrigerant leaving compressor of R-134a air-conditioner at cooling capacity 1 TR. From the study results, it could be seen that the modified unit gives better EERAC when the cooling water does not over 43 ºC. A set of simplified model has been developed to predict the system performance and the simulated results agree quite well with the measured data. Moreover, profile of hot water consumption in the department of children's hospital room, Maharaj Nakorn Chiang Mai Hospital is chosen to study. It was found that the hospital requires hot water is 0.815 m3/d at 50 ºC temperature, one unit of R-290 heat pump is enough to generate hot water with the economic results of saving cost and payback period around 765.46 USD/y and 1.97 y, respectively.},
year = {2015}
}
TY - JOUR T1 - R-290 Vapor Compression Heat Pump for Recovering and Upgrading Waste Heat of Air-Conditioner by Using Spiral Coil Tank AU - Nattaporn Chaiyat AU - Natthawud Dussadee Y1 - 2015/01/12 PY - 2015 N1 - https://doi.org/10.11648/j.ijrse.s.2015040101.18 DO - 10.11648/j.ijrse.s.2015040101.18 T2 - International Journal of Sustainable and Green Energy JF - International Journal of Sustainable and Green Energy JO - International Journal of Sustainable and Green Energy SP - 50 EP - 56 PB - Science Publishing Group SN - 2575-1549 UR - https://doi.org/10.11648/j.ijrse.s.2015040101.18 AB - In this study, a concept of using a vapor compression heat pump for recovering and upgrading waste heat of an air-conditioner has been presented. R-290 has been selected due to its high efficiency and the environmental impact. R-290 heat pump at heating capacity 3 kW has been constructed to recover waste heat from the discharge refrigerant leaving compressor of R-134a air-conditioner at cooling capacity 1 TR. From the study results, it could be seen that the modified unit gives better EERAC when the cooling water does not over 43 ºC. A set of simplified model has been developed to predict the system performance and the simulated results agree quite well with the measured data. Moreover, profile of hot water consumption in the department of children's hospital room, Maharaj Nakorn Chiang Mai Hospital is chosen to study. It was found that the hospital requires hot water is 0.815 m3/d at 50 ºC temperature, one unit of R-290 heat pump is enough to generate hot water with the economic results of saving cost and payback period around 765.46 USD/y and 1.97 y, respectively. VL - 4 IS - 1-1 ER -
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