What are the advantages of a drop-down side curtain on a passively cooled greenhouse versus a roll-up side curtain?
What will be an ideal response?
a) When the drop-down curtain begins to open in cold weather, the
incoming cold air enters above plants where it mixes with hot air before reaching
the plants. In a roll-up system the cold air enters directly on plants chilling those
close to the curtain. b) In a windy climate and a greenhouse with an overhead
sprinkler watering system, the roll-up curtain allows air to blow in on the plants
which could divert water from plants on the windward side.
You might also like to view...
Which of the following is LEAST-Likely to occur?
A. Pure ethylene glycol freezing at 150F. B. Pure ethylene glycol boiling at 3300F. C. Factory radiator fill being about 50% water and 50% coolant. D. A 70% concentration of ethylene glycol freezing at -850F.
The balusters, newel post, and handrail together are called a ____.
A. tread B. stringing C. balustrade D. nosing
In a system using a TX valve, when the air filters become restricted, the evaporator superheat will ____.
A. increase B. decrease C. remain the same D. disappear entirely
Serial-to-parallel and parallel-to-serial converters allow computers to communicate with external devices
Indicate whether the statement is true or false