Abstract
In this research, the application of solar system from a technical and economic point of view for heating a greenhouse of twin type with arched structure and single layer polyethylene coating was investigated. For this purpose, initially, the climatic suitability of the southern region of Kerman was determined for the development of climate-friendly greenhouses. Then, according to the obtained results and calculating the heating needs of the greenhouse, a flat-panel solar water heater with 6 m2 of collector and 500 liters of tank volume is determined and next to a greenhouse cucumber production unit, to heat the air inside the greenhouse with the help of 4 10-blade aluminum radiator was installed.The results of paired t-test showed that there was no significant difference between the two greenhouses in terms of CO2 content, average temperature and relative humidity, but in terms of chlorophyll content and yield between the two greenhouses, at the probability level of one and five percent, respectively. There was a significant difference, with a higher average of conventional system. The results of data analysis in Kamfar software showed that in terms of economic indicators, the use of solar water heaters for heating greenhouses in this area is justifiable in the fifth year and the return on investment is 5.32 years.
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Claims 5
Claim · model-written summary
Conventional heating had higher cucumber chlorophyll content than solar heating, with a significant difference at the one percent level.
- Taxon
- cucumber
Cucumis sativuse1 - Treatment
- conventional systeme0
- Outcome
- chlorophyll contente0
- Direction
- highere0
- Qualifier
- one and five percent, respectivelye0
- Comparator
- two greenhousese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in terms of chlorophyll content and yield between the two greenhouses, at the probability level of one and five percent, respectively. There was a significant difference, with a higher average of conventional system”
e1“greenhouse cucumber production unit”
Claim · model-written summary
Conventional heating had higher cucumber yield than solar heating, with a significant difference at the five percent level.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- conventional systeme0
- Outcome
- yielde0
- Direction
- highere0
- Qualifier
- one and five percent, respectivelye0
- Comparator
- two greenhousese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in terms of chlorophyll content and yield between the two greenhouses, at the probability level of one and five percent, respectively. There was a significant difference, with a higher average of conventional system”
e1“greenhouse cucumber production unit”
Claim · model-written summary
The two greenhouses did not differ significantly in CO2 content, average temperature, or relative humidity.
Not reportedTaxon
Verbatim
e0“there was no significant difference between the two greenhouses in terms of CO2 content, average temperature and relative humidity”
Claim · model-written summary
Solar water heating of greenhouses was economically justifiable in the fifth year.
Not reportedTaxon
Verbatim
e0“the use of solar water heaters for heating greenhouses in this area is justifiable in the fifth year”
Claim · model-written summary
The return on investment for solar water heating of greenhouses was 5.32 years.
Not reportedTaxon
Verbatim
e0“the return on investment is 5.32 years”
The same questions in other papers
cultivation system · physiology: pigments · Cucumis sativus (cucumber)Positive and negative results
1 in the opposite direction
- positive
cultivation system · yield · Cucumis sativus (cucumber)Positive and negative results
3 papers in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.