Many greenhouse owners have to install some sort of heating mechanism in their greenhouses back at home to keep the temperature under control. The heating systems vary from simple paraffin or kerosene heaters to electric heaters and high-tech systems with underground cabling. Most electric heating systems come with a thermostat and sensors that will kick start the heaters if temperature falls below a preset level. The automation is going to be a bit costly, of course, but if you have to deal with severe winters, it would be worth the investment to get over the constant fear of losing your plants to cold.
When you purchase heaters for your greenhouse, be sure that you buy one according to the size of your greenhouse. You don’t want a mismatch between the two. That would result in the greenhouse not getting warm enough and at the same time could put enough strain on the heaters to burn them out. You don’t even want to think of the electricity bill if your heaters’ thermostats never reach the cut-off point!
Similarly, ventilation is another aspect you have to be sensitive to. Just as we need fresh air for good health, so do other living things, including plants. You probably have vents built into the greenhouse design plans that you are following. Have you made your plan on your own? In that case, check that the size, number and location of the vents are such that the rate of turnover of air is efficient.
For both, heating and ventilation, you would need to calculate the area and volume of your greenhouse. Next, find a suitable heating system with the appropriate heating capacity. The ventilation system would also need to be purchased according to the required air-exchange rate.
courtesy of :
Building A Greenhouse Plans.....Find out here !
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Green house, plan tips
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Green house, plan tips
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