To me, the term "green house" can refer to at least three things:
1. It can be a room with plastic or glass wndows that allows in sunlight but traps some heat, permitting plants to survive colder environments.
2. It can be a metaphor to describe the similar effect (allowing in sunlight and trapping heat) of methane, carbon dioxide, and other gases in the earth's atmosphere.
3. It can be a term for a house that has been designed for extreme energy efficiency. That efficiency can come from any number of places. Here are just a few:
- installing bamboo flooring in place of hardwood flooring
- using new, energy-efficient appliances
- installing modern window units
- composting much of the waste from the kitchen and growing vegetables in the yard, on the roof, on the balcony, or just about anywhere (using recycled dishwater)
Green houses are climate controlled houses. These are suitable for the production of vegetable crops, production of off-season flower, vegetables, plant propagation, raising of seedlings, primary and secondary hardening nursery of tissue cultured plant and Growth / Production of rare plants, orchids / herbs, medicinal plants etc.
In green house crops are grown under a favorable artificially controlled environment and other conditions viz. temperature, humidity, light intensity, photo period, ventilation, soil media, disease control, irrigation and other agronomical practices throughout the season irrespective of the natural conditions outside.
In conventional Agronomical practices, the crops are being grown / cultivated in the open field under natural conditions where the crops are more susceptible to sudden changes in climate i.e. temperature, humidity, light intensity, photo period and other conditions due to which the quality, yield of a particular crop can get affected and may be decreased.
Such construction requires, in short, use of renewable energy sources and protecting the environment by using recyclable materials and adopting a system of heating water using solar energy. The term "green" defines any new or old construction that minimizes or eliminates the risk of harming the environment. Manufacturers can use modern technical solutions, such as specialized windows or traditional solutions, like natural ventilation.
The most important advantage is to reduce energy costs and the recycling costs, studies showing that the natural light from buildings improves employee productivity.
Another advantage is that, unlike traditional buildings where the costs increase as construction is growing, raising the green homes cost more to the level of designing, but the amount decreases as the building is constructed.
How to have a "green" house
- Use low energy bulbs
- Change the old windows that do not isolate well
- Insulate the home, especially the attic or bridge
- Buy appliances with low power
- Install solar panels to produce energy
- Use natural ventilation solutions instead of air conditioning
- Natural stone paving garden
- Change old sanitation with some new, from recyclable materials
- Sort and recycle waste
- Ideal is to build the house of insulated polystyrene encasing where the concrete is poured, allowing a double insulation