Volume 13, Issue 1 (3-2023)
JEM 2023, 13(1): 0-0 |
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Hosseinnejad A, Saboohi Y, Zarei G, Shayegan J. Thermoeconomic analysis of reducing exergy losses in greenhouses with hydroponic cultivation system through drainage recycling and formation of water quality pyramid. JEM 2023; 13 (1)
URL: http://energy.kashanu.ac.ir/article-1-1620-en.html
URL: http://energy.kashanu.ac.ir/article-1-1620-en.html
Sharif University of Technology
Abstract: (371 Views)
Employing non-conventional water resources using treatment and recycling is considered as the main resource in addressing future water scarcity. Although non-conventional water recycling has been investigated in details in the literature, its impacts on irrigation-fertilizing systems have not been discussed using thermoeconomic analysis. In this case study, using a hydroponic greenhouse system for rose cultivation, exergoeconomic cost was investigated in a recycling process by comparing three system including: open cycle, open cycle considering exergy abatement cost, and close cycle (nutrition water recycling). Results show that the exergoeconomic cost for producing 212,500 rose cut-flowers in a 6-months cold period, where heat was supplied by boiler for the above mentioned scenarios were about 15,760 $, 16,525 $ and 14,718 $, respectively. Also, the thermoeconomic indicator of the unit exercoeconomic costs for above mentioned scenarios were 74.2, 77.8 and 69.3 $Gj-1, respectively. In the close cycle, drainage water recycling decreased total exergy losses by 4.02 Gj.yr-1, of which 1.24 Gj.yr-1 reduction was due to the reduced inlet water and 1.91 Gj.yr-1 for the inlet fertilizer reduction, while that increased by the system electricity consumption was 1.12 Gj.yr-1. Water quality pyramid presented based on the unit exergoeconomic cost indicated 459.9 Gj.yr-1 for the nutrition feed as the highest peak value and zero for the wastewater at the base of the pyramid.
Keywords: recycling, thermoeconomic analysis, hydroponic cultivation in greenhouse, water quality pyramid, unit exergoeconomic cost
Type of Study: Research |
Subject:
Special
Received: 2021/05/20 | Revised: 2023/01/21 | Accepted: 2022/04/24 | Published: 2023/03/19
Received: 2021/05/20 | Revised: 2023/01/21 | Accepted: 2022/04/24 | Published: 2023/03/19
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