A technical feasibility study on the use of Çavundur geothermal field for greenhouse heating

Download

index.pdf

Date

2003

Author

Kasapoğlu, Hüseyin

Metadata

Show full item record

Item Usage Stats

305
views

122
downloads

Protective cultivation is widely used nowadays in order to increase crop yield by creating the optimum conditions such as temperature, humidity and CO2 content, irrespective of outside conditions. Since plant production doubles for every 10 degrees increase in temperature to a certain limit, this makes temperature a very important factor for optimum plant growth. In order to keep the greenhouse temperature constant during changes in outside conditions, heating and often cooling are required. Heating of a greenhouse can be done using different systems and design procedures. The applicability of different types of greenhouses is studied at the field local conditions, Çavundur-Çankiri, Turkey. Required heating load was calculated that is due to infiltration and conduction through the greenhouse cover at a single design point, which is the minimum outside temperature. Two types of heating systems, soil heating system and bare tube system, were considered. Analysis of results showed that, Çavundur geothermal field with 54 °C fluid temperature is suitable for greenhouse heating. Although the existing well Ç-1 is capable of producing 47 l/s, the flow rate of geothermal fluid for greenhouse heating was limited by 35 l/s due to existing thermal facilities in the area. Among different glazing materials, plastic film covered greenhouses with double poly was found to be the most suitable in terms of heat load calculations. The maximum number of greenhouses (the area of each green house is 216 m2) that can be heated by Çavundur Geothermal field was found to be 138 by considering soil heating with double poly glazing material. Annual heat load factor of geothermal energy for greenhouse heating in Çavundur area was found to be as high as 96% depending on indoor design temperature and base load.

Subject Keywords

Geothermal resources, Natural resources, Geothermal engineering, Thermodynamics, Çankırı (Turkey)

URI

http://etd.lib.metu.edu.tr/upload/1172352/index.pdf
https://hdl.handle.net/11511/13799

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Assessment of low temperature geothermal resources Arkan, Serkan; Parlaktuna, Mahmut; Department of Petroleum and Natural Gas Engineering (2003) One of the most applicable methods of low-temperature geothermal resource assessment is volumetric method. While applying volumetric method, the values of uncertain parameters should be determined. An add-in software program to Microsoft EXCEL, @RISK, is used as a tool to define the uncertainties of the parameters in volumetric equation. In this study, Monte Carlo simulation technique is used as the probabilistic approach for the assessment of lowtemperature Balçova-Narlidere geothermal field. Although Balç...
Numerical modeling of Edremit geothermal field Günay, Emre; Karahanoğlu, Nurkan; Department of Geological Engineering (2012) The purpose of this study is to examine the geothermal potential, sustainability, and reinjection possibility of Edremit geothermal field. In order to investigate this, a numerical model consisting of a hot and cold water aquifer system is established. A two dimensional cross sectional model is set to simulate this geothermal system. Different pressure and temperature values are applied to the nodes at the boundaries to perform a steady state calibration which minimizes the computed results and observed val...
A data-driven approach for predicting nepheline crystallization in high-level waste glasses Sargın, Irmak; Lonergan, Charmayne E.; Vienna, John D.; McCloy, John S.; Beckman, Scott P. (2020-09-01) High-level waste (HLW) glasses with high alumina content are prone to nepheline crystallization during the slow canister cooling that is experienced during large-scale production. Because of its detrimental effects on glass durability, nepheline (NaAlSiO4) precipitation must be avoided; however, developing robust, predictive models for nepheline crystallization behavior in compositionally complex HLW glasses is difficult. Using overly conservative constraints to predict nepheline formation can limit the was...
Simulation of environmental impact of an existing natural gas dehydration plant using a combination of thermodynamic models Torkmahalleh, Mehdi Amouei; Magazova, Galiya; Magazova, Aliya; Rad, Seyed Jamal Hassani (2016-11-01) A new approach was presented to improve the simulation results of an existing TEG based natural gas dehydration plant, using Aspen Plus software. Furthermore, the environmental impact of the plant was investigated. The plant consists of four main unit operations including an absorber, a flash tank, a stripper and a regenerator. Twelve thermodynamic models were assigned to these units. In the first step of the study, only one thermodynamic model was assigned to all of the units while in other steps, combinat...
An evaluation of potential sampling locations in a reservoir with emphasis on conserved spatial correlation structure YENİLMEZ, Firdes; Duzgun, Sebnem; Aksoy, Ayşegül (2015-01-01) In this study, kernel density estimation (KDE) was coupled with ordinary two-dimensional kriging (OK) to reduce the number of sampling locations in measurement and kriging of dissolved oxygen (DO) concentrations in Porsuk Dam Reservoir (PDR). Conservation of the spatial correlation structure in the DO distribution was a target. KDE was used as a tool to aid in identification of the sampling locations that would be removed from the sampling network in order to decrease the total number of samples. Accordingl...

Citation Formats

H. Kasapoğlu, “A technical feasibility study on the use of Çavundur geothermal field for greenhouse heating,” M.S. - Master of Science, Middle East Technical University, 2003.