[TRNSYS-users] pls give me your comments

[ahmad abbasian via TRNSYS-users]

Dear All

I have used a 11250 kgr/hr of air (about 21000 CFM) for a 500 m2 greenhouse fan and pad cooling system. there were some hours which the temperature of greenhouse reaches as low as 13 ,so I have used another fan with same flow rate to be turned on when the greenhouse temperature is below 15 to supply outside air directly to greenhouse with no cooling, and the fan of cooling pad is turned off at this hours. it has solved the temperature problem but the relative humidity reaches to low values. It seems wrong to me, because it occures in a short time. I mean that supplying outside air to greenhouse at a short period of time makes low relative humidity rapidly. Is it true? please give me your comments
[cid:f57ca153-0731-48a4-ad53-f52db892be20]



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Ahmad abbasianzadeh
Solar energy Researcher
Harrisburg, Pensylvania



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