Greenhouses play important roles in cultivation of plants. They give the required growing space for plants. They generally allow cultivation of these plants only in places which can grow it normally anyway.
Some other factors like shading and ventilation, are also vital for reducing overheating in greenhouse. However, correct misting or in other words control of humidity levels is a vital factor which gives a proper environment for the growth of these plants. Even evaporation uses up lots of heat when it converts water from a liquid into gas. After the venting process gets done, the required moisture is gone since it’s released into the air. The misting is a way to replace lost moisture back to the greenhouse.
The level of moisture needed to be kept constant is dependent on many factors like the content of shading and also ventilation which is given, and the status of local climate and also fluctuations in weather daily. Rule is for each ten square feet of area used, there surely must be moisture content of 1-2 gallons per hour. Misting systems can efficiently divide moisture all the places in the greenhouse. Generally a misting system must disperse moisture or water in a very fine mist, hence prevents plants from getting soaked.
Some facts about certain misting systems are as follows:
1. Misting systems are used to spray water in very fine mist or in a coarse spray. Size of these droplets depends mainly on nozzle types, and also spacing of nozzle and even the operating pressure.
2. These misting systems can be used for different types of applications apart from the greenhouse chores. These can also be used for controlling static, dust suppression, and also for concrete curing.
3. These misting systems use pumps that are designed for continuous or intermittent duty. The intermittent pumps are ones which sprinkle water for about five minutes or so and rest for like one minute like in between the misting.
4. All misting systems nowadays have electronic timers that are programmed to mist about 1 to14 times during a day and with misting ranging from about 1 to almost 24 minutes. Some other systems are programmed for shorter durations with increased timing.
5. These nozzles are usually made out of plastic or brass. These brass nozzles are affected by some minerals which are plenty in the water. These plastic nozzles are tolerant to all these minerals and even repel lime and some other deposits.
6. Amount of water that is required to enhance efficiency of misting systems are calculated by calculating product of rate of nozzle flow every minute and number of nozzles present in a system, this result is then multiplied by number of minutes of operation of the misting system in a day. Result is a good estimate to know amount of water required by the system in general.
7. Most of the misting systems offer pumps that are noise free generally. These won’t affect plants and also people present close to the greenhouse.
8. Most misting systems are supplemented by means of evaporative coolers. These work well in dry and hot climates (wherein humidity levels are below 50%). Air is cooled around 10 to 20 degrees due to the water that is evaporated since they are brought via cooler and then go into greenhouse. But too much of humidity will be an issue and people must water plants only when needed.
9. Using tools that can calculate humidity are also helpful for all the greenhouse enthusiasts.
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