Greenhouse temperature

What I'm hoping to demonstrate (including to a wider audience) is just how useful high level (albeit narrow width) shelving above lower staging actually is, enabling reduced heater fuel consumption and even lower expenditure on heated propagators (which if used in a greenhouse require a minimum of extension leads and waterproof connection boxes). My upper shelves are a standard seed tray width, but can take 67% more trays if they are turned through 90 degrees and project beyond the shelving.

Tonight I'll compare soil temps (using buried temperature data-loggers) between pots in heated propagators on the staging and soil simply in pots standing on high level shelving. EDIT: I was too lazy and just left the data-logger lying in the propagator which gave too high readings for actual soil temps at seed sowing level, which I know due to using thermometers with external sensors in pots). Will re-do correctly tonight 2/4/16.


P.S. If anybody would like me to conduct any other form of temperature comparison (not necessarily greenhouse related), please let me know.

 

Compare the soil temperature just outside the greenhouse to soil at the same depth just inside the greenhouse
Most folks dont insulate the greenhouse perimeter which prevents expensive heat migrating out into the garden.
Another one to try if its an aluminium greenhouse, is to measure the temperature of the frame and compare it to the outside air temperature. That one will highlight how the frame acts as a thermal bridge allowing heat to escape. If its a wooden greenhouse, it wont have much in the way of thermal bridging and the glazing will lose a lot more heat than the frame.

 

Hi,hope that this will helps.

For tomatoes
daytime 22 ~ 25 ℃
15 ~ 18 ℃ at night
above 30 ℃ with strong light easy to evoke disease, poor growth above 33 ℃, 40 ℃ stop growing
no less than 8.7℃
Best: 20-25℃
Seedlings:23～28℃
Flowering:5～28℃
Flourishing: daytime 24-28℃, 15-20℃ at night



For cucumber
daytime: 25～32℃
15～18℃ at night
Day and night temperature difference: 10～15℃


For peppers
light:10-12 hours/day
PH:6.5-7
Humidity:60-80%

Ambient temperature
Germination: 25-28℃
Seedlings: daytime 25-30℃, 15-20℃ at night
Flowering: daytime 20-26℃, 16-22℃ at night
Flourishing: 25-28℃