Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy Recovery
Conventional air convective driers for drying seaweed consume large amounts of energy as it uses fossil fuels, biomass, or electricity. Enclosed systems assisted by vapor compression heat pumps are much more energy-efficient and are widely applied to many drying processes. However, the existing simp...
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| Format: | Article |
| Language: | zho |
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Journal of Refrigeration Magazines Agency Co., Ltd.
2021-01-01
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| Series: | Zhileng xuebao |
| Subjects: | |
| Online Access: | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.05.140 |
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| author | Cheng Jiahao Cao Xiang Ge Meicai Zhang Chunlu |
| author_facet | Cheng Jiahao Cao Xiang Ge Meicai Zhang Chunlu |
| author_sort | Cheng Jiahao |
| collection | DOAJ |
| description | Conventional air convective driers for drying seaweed consume large amounts of energy as it uses fossil fuels, biomass, or electricity. Enclosed systems assisted by vapor compression heat pumps are much more energy-efficient and are widely applied to many drying processes. However, the existing simple heat pump dryer is not suitable for seaweed drying because of the significant air flow rate required. In this study, a novel seaweed heat pump dryer is proposed to recover latent heat through air bypass and cooling energy using a subcooler. The system is optimally designed with the aid of a simulation and working domain evaluation. A prototype was built for the model validation and performance analysis. The results show that the proposed system can achieve a specific moisture extraction rate (SMER) of 2.61 kg/kWh under typical seaweed drying conditions (return air temperature of 46 ℃ and relative humidity of 40%). The SMER peaks at a bypass air ratio of 0.77, and subcooling of 25 ℃, and is maintained above 1.88 kg/kWh when the return air fluctuates within a certain temperature range (46±3)℃ and relative humidity range (40%±10%). |
| format | Article |
| id | doaj-art-dd4d9e3945ee4f1f9bb6b421ac55b699 |
| institution | OA Journals |
| issn | 0253-4339 |
| language | zho |
| publishDate | 2021-01-01 |
| publisher | Journal of Refrigeration Magazines Agency Co., Ltd. |
| record_format | Article |
| series | Zhileng xuebao |
| spelling | doaj-art-dd4d9e3945ee4f1f9bb6b421ac55b6992025-08-20T02:03:01ZzhoJournal of Refrigeration Magazines Agency Co., Ltd.Zhileng xuebao0253-43392021-01-014266503786Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy RecoveryCheng JiahaoCao XiangGe MeicaiZhang ChunluConventional air convective driers for drying seaweed consume large amounts of energy as it uses fossil fuels, biomass, or electricity. Enclosed systems assisted by vapor compression heat pumps are much more energy-efficient and are widely applied to many drying processes. However, the existing simple heat pump dryer is not suitable for seaweed drying because of the significant air flow rate required. In this study, a novel seaweed heat pump dryer is proposed to recover latent heat through air bypass and cooling energy using a subcooler. The system is optimally designed with the aid of a simulation and working domain evaluation. A prototype was built for the model validation and performance analysis. The results show that the proposed system can achieve a specific moisture extraction rate (SMER) of 2.61 kg/kWh under typical seaweed drying conditions (return air temperature of 46 ℃ and relative humidity of 40%). The SMER peaks at a bypass air ratio of 0.77, and subcooling of 25 ℃, and is maintained above 1.88 kg/kWh when the return air fluctuates within a certain temperature range (46±3)℃ and relative humidity range (40%±10%).http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.05.140dryingheat pumpenergy-savinglatent heat and cooling energyheat recovery |
| spellingShingle | Cheng Jiahao Cao Xiang Ge Meicai Zhang Chunlu Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy Recovery Zhileng xuebao drying heat pump energy-saving latent heat and cooling energy heat recovery |
| title | Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy Recovery |
| title_full | Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy Recovery |
| title_fullStr | Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy Recovery |
| title_full_unstemmed | Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy Recovery |
| title_short | Seaweed Heat Pump Dryer with Latent Heat and Cooling Energy Recovery |
| title_sort | seaweed heat pump dryer with latent heat and cooling energy recovery |
| topic | drying heat pump energy-saving latent heat and cooling energy heat recovery |
| url | http://www.zhilengxuebao.com/thesisDetails#10.3969/j.issn.0253-4339.2021.05.140 |
| work_keys_str_mv | AT chengjiahao seaweedheatpumpdryerwithlatentheatandcoolingenergyrecovery AT caoxiang seaweedheatpumpdryerwithlatentheatandcoolingenergyrecovery AT gemeicai seaweedheatpumpdryerwithlatentheatandcoolingenergyrecovery AT zhangchunlu seaweedheatpumpdryerwithlatentheatandcoolingenergyrecovery |