Journal Of Agriculture and Nature

Abstract

In the study in which the cost of geothermal
energy is determined in terms of required heat energy, fuel quantity, carbon
dioxide emission values and competitiveness if the internal temperature is kept
constant at 18 °C in the greenhouses with different characteristic features in
Antalya province, which has a Mediterranean climate and is heavily used for
greenhouses in our country, and in Kırşehir province, which has a continental
climate and the greenhouse cultivation has been developing. The maximum heat
power requirement if the temperature inside the greenhouse is kept constant at
18 °C was determined as 253 W m-² for Kırşehir province and as 141 W m^-2 for Antalya province. In addition, the required heat energy
requirement during the production period was calculated as 589.02 kWh m^-2
year^-1for Kırşehir province and as  219.06 kWh m^-2 year^-1for Antalya province if the single-layer PE plastic which is widely
used in our country is used without heat protection measures. When the double-layer PE plastic and well-insulated heat curtains
are used, these
values were determined as 304.09 kWh m-² year-¹ for
Kırşehir province and as  103.35 kWh m-²
year-¹ for Antalya province.

According
to the results obtained, if the heat energy required for greenhouses in
Kırşehir province is supplied with fossil fuels, Kırşehir province does not have
a chance to compete with Antalya province. However, when geothermal energy is
used in the greenhouse and the maximum cost of kWh is 0.115 TL, Kırşehir province
will have significant advantages in terms of 
reducing the carbon dioxide emissions from fossil fuels (imported coal,
heating oil and natural gas) to the atmosphere as well as being able to compete
with the provinces where greenhouse cultivation is well-developed like Antalya.