Abstract
Abstract Four cultivars of greenhouse tomatoes ( Lycopersicon esculentum Mill.) were grown in a 0.2-ha experimental greenhouse complex designed to compare heat exchange systems using condenser cooling water from the Browns Ferry Nuclear Plant near Athens, Alabama, with a conventional heating system. The greenhouse was divided into 3 zones; 2 used condenser cooling water as the heat source, and the other was heated conventionally with liquid propane gas (LPG). Heating tests showed that the heat exchangers using condenser cooling water performed within design expectations and maintained greenhouse temperatures 5.6° to 6.6°C below condenser cooling water temperatures. However, due to unexpectedly low and fluctuating condenser cooling water temperatures, greenhouse temperatures necessary for optimum tomato production could not be maintained when ambient temperatures were below −11.1°C. Tomato yields ranged from 5.5 to 6.5 kg/plant in the zones heated with condenser cooling water compared with 6.9 to 7.5 kg/plant in the conventionally heated zone.
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Claims 3
Claim · model-written summary
Cooling water heat exchangers maintained greenhouse temperatures 5.6° to 6.6°C below cooling water.
- Taxon
- Tomato
Solanum lycopersicumt0 - Outcome
- greenhouse temperaturese0
- Direction
- belowe0
- Value
- 5.6° to 6.6°Ce0
- Comparator
- condenser cooling water temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the heat exchangers using condenser cooling water performed within design expectations and maintained greenhouse temperatures 5.6° to 6.6°C below condenser cooling water temperatures.”
t0“Tomato”
Claim · model-written summary
Cooling water heating could not maintain temperatures needed for optimum tomato production when ambient temperature was below −11.1°C.
- Taxon
- TomatoSolanum lycopersicumt0
- Outcome
- greenhouse temperatures necessary for optimum tomato production could not be maintainede0
- Qualifier
- below −11.1°Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greenhouse temperatures necessary for optimum tomato production could not be maintained when ambient temperatures were below −11.1°C.”
t0“Tomato”
Claim · model-written summary
Tomato yields were 5.5 to 6.5 kg/plant with cooling water heating versus 6.9 to 7.5 kg/plant with conventional heating.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- condenser cooling watere0
- Outcome
- Tomato yieldse0
- Direction
- lowerinferrede0
- Value
- 5.5 to 6.5 kg/plante0
- Qualifier
- 6.9 to 7.5 kg/plante0
- Comparator
- conventionally heated zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato yields ranged from 5.5 to 6.5 kg/plant in the zones heated with condenser cooling water compared with 6.9 to 7.5 kg/plant in the conventionally heated zone.”
The same questions in other papers
processing · yield · Solanum lycopersicum (tomato)Positive and negative results
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See all 44 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.