GEOFOOD - Energy model of geothermalgreenhouse aquaponic systems, Part I, Model description and applications

Abstract

Dit rapport bevat een beschrijving van het aquaponics model dat is ontwikkeld binnen het EU-project GEOFOOD.Energiemodellen voor de productie in kassen en recirculerende aquacultuur systemen zijn gecombineerd om te evalueren hoe er optimaal gebruik kan worden gemaakt van een geothermische bron. Het model kan worden ingezet als een ontwikkelingstool om het directe gebruik van geothermische warmte binnen aquaponics, en daarmee de agri-food sector te stimuleren.

GEOFOOD - RAS and heating installation in The Netherlands : Half-yearly update report no. 3 - June 2020

“…More information on the reuse of residual heat from a geothermally heated greenhouse for RAS production can be found in the GEOFOOD reports by Boedijn, Baeza, et al, 2019a. Heating capacity was increased in February by adjusting the maximum heating temperature on the hot side of the heat exchanger from 35 to 45°C.…”

“…This adjustment underlines that the peak heat demand of a RAS facility is a key design parameter, especially when employing low-temperature heat. More information on the reuse of residual heat from a geothermally heated greenhouse for RAS production can be found in the GEOFOOD reports by Boedijn, Baeza, et al 2019a.…”

“…The freshwater input valve was unintentionally left open for too long, thereby replacing about 30% of total system volume with colder water. Target water temperature is a key parameter that influences heat use, the temperature fluctuations as described above will therefore be accounted for when analyzing the data and validating the GEOFOOD energy flow model on geothermal aquaponics (Boedijn, Baeza, et al 2019a) To get a first indication of the RAS energy model's performance a load duration curve was created based on the daily heat demand. Figure 5 shows both measured and simulated heat use.…”

GEOFOOD - Additional heat utilization processes for geothermal aquaponics

“…uilding on this circular concept, a predictive model was developed to design and assess geothermal quaponic systems consisting of a geothermal well, a greenhouse and a recirculating aquaculture ystem (RAS) (Boedijn, Baeza, et al, 2019a).…”

“…he model can calculate heat demand patterns for greenhouse-and aquaculture production, based on he requirements of the crop and fish species, system design and local climate. Figure 1 shows an xample of a simulated glasshouse growing tomato and a RAS that produces pike-perch, located in he Netherlands (Boedijn, Baeza, et al, 2019b).…”