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2015-03-18T07:49:29Z

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Lhep: /* Very hot days end of June beginning of July */

2008-07-08T11:25:02Z

Very hot days end of June beginning of July

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The default value of the temperature in the laboratory should be around 22 degree and the relative humidity around 63 percent.

===Very hot days end of June beginning of July===
The temperature of the scanning laboratory was stable around 22.5 degree and the relative humidity was also stable around 62 percent until end of June. Then a periode of hot days changed the conditions. Most probably the hot and dry weather outside was responsile for that.

- Effects:
* Temperature stable around 23 degrees (little bit increased)
* Relative humidity around 48 percent (decreased a lot)

- Why this effects:
* Low relative humidity from fresh air from outside.
* B/c of the hot temperature, the air conditioner is cooling a lot and dries the air in the lab

- Goal:
* Go back to default conditions
* Stabilaze the relative humidity to the default value (around 62 percent)

Actions:
{| border="1"
|+
! Date !! Temp !! r.R. !! Action !! Comment
|-
! July 1 !! 22.9 !! 47 !! humidifier to manual mode !! no effect
|-
! July 2 !! 22.8 !! 49 !! air conditioner to default 23 !! increase in both within 1 hour
|-
! July 2: 1 hour later !! 23.9 !! 58 !! !!
|-
! July 2: 5 hour later !! 24.6 !! 60 !! !!
|-
! July 3: !! 25 !! 58 !! keep it like that !!
|-
! July 7: !! 25.1 !! 53 !! air conditioner to default 21 !!
|-
! July 8: morning !! 30! !! 69 !! air conditioner to default 20! !! AIR CONDITIONER did blow out hot air! .. is decreasing
|-
! July 8: afternoon !! 25.7 !! 41 !! air conditioner to default 21 !! room is cooling down ...
|}

- Action July 1st
* Change humidifier from automatic to manual mode 2 (most powerful humidification)
* Humidifier did run constantly all day and night. The relative humidity increased to 50 percent. This effect could also be due to less cooling during the night.

- Action July 2nd
* Increas default temperature to 23 degrees (instead of 22 degrees) in order to have less cooling of the air conditioner (less drying)

- Action July 7th
* Put default value of the air conditioner to 21 degree. Hope that humidity gets better.

Temperature and Humidity Control - Revision history

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Lhep: /* Very hot days end of June beginning of July */