no secret that the key to a full-fledged breeding of vegetable crops and other cultivated plants is not only a greenhouse, built by all the rules, but its year-round operation is ensured by well-equipped heating system.While developing the project greenhouses, so it is important to determine which system is heating the greenhouse be the most appropriate in each case, and clearly think through all of its functional parameters.It plays an important role in the collection of early harvest, which in terms of lack of solar radiation, is possible only thanks to the equipped system harmoniously heating greenhouses.
- heating greenhouses: a variety of methods
- Solar heating of greenhouses: a promising technique or a relic of the past?
- Biological heating greenhouses in winter: myth or reality?
- technical methods of heating: what to choose?
- Heating greenhouse gas
- heating greenhouses with electricity
- How to heating greenhouses with an electrical cord?
- water heating greenhouses
- Infrared heating greenhouses: how to reduce energy costs?
heating greenhouses: a variety of methods
The main problem with the equipment in the greenhouses during the winter time - the choice of the most suitable heat source.The diversity of modern technology causes significant difficulties in choosing the heating equipment, even if you are totally decided on the most suitable way of heating.In modern conditions of development of innovative technologies distinguished experts suggest three fundamental ways to heat greenhouses:
- Natural, implying the use of solar energy;
- Biological exercised by biodegradation of organic materials;Technical
- , including a plurality of specific technical techniques used for heating greenhouses, which became available after the development of innovative engineering techniques.
implementation of each of the above techniques aimed at maintaining optimum microclimate conditions in the greenhouse, namely, the optimal level of the day and night temperature and humidity.
Solar heating of greenhouses: a promising technique or a relic of the past?
Despite the rapid development of technology, is still one of the most reliable and promising methods of heating greenhouses heating arrangement is based on solar energy.The basis of this technique is the greenhouse effect heat generated inside the greenhouse, which are used for arranging materials based on polyethylene, glass, and a plurality of other transparent materials that are available to the consumer.From the point of view of experts, this method is one of the most low-cost and environmentally friendly, but the seasonal volatility of the amount of solar energy is especially important in midland and northern regions, significantly limits its use.Therefore there is a need for limited use of this method or converting solar energy into other varieties of heat.
The technique, which is based on the greenhouse effect, is as follows: passing through the transparent covering of greenhouses, solar energy helps to heat the soil and other elements of the greenhouse, which, in turn, contribute to a gradual warming of the air inside the greenhouse because of the continuingdensity and reliability of its construction.
Due to the fact that solar energy is unregulated indicator holder greenhouses purpose is to provide effective retention of warm air inside the building, which is achieved through proper orientation of the compass relative to the greenhouse, its functional structural form, and judicious use of additional methods of storageheat.
This method is suitable for the heating of greenhouses made of polycarbonate and other transparent materials.
Biological heating greenhouses in winter: myth or reality?
Another of the most popular and low-cost methods of heating greenhouses is a biological method, which is based on the use of biochemical activity of individual substances of organic origin.Most often as a biological material used horse manure, straw, waste wood and even household waste.In the process of digestion biological materials come into contact with air, which contributes to the activation of biochemical reactions that are carried out with the release of thermal energy.And interestingly, this energy is released in large quantities sufficient for heating greenhouses in winter.
In addition, no less popular biofuel is a vegetable humus.To prepare such a mold, a wooden barrel poured mown grass and added 5% solution of urea, after which it was covered with a wooden cover and left for 14 days.
technical methods of heating: what to choose?
To avoid unpleasant surprises, prepodnesёnnyh whimsical winter weather, experts advise to use additional sources of heating, which will help protect crops from the damaging effects of low temperatures.
engineering techniques heating greenhouses are particularly relevant in the northern latitudes, where severe frosts Truckers deliver considerable problems.You need to know that the lower the air temperature is lowered, the more difficult to achieve the required performance in the greenhouse.In this connection it is necessary to smooth arrangement of the heating system.
Heating the greenhouse gas
Gas heating greenhouses, from the point of view of professionals is the most appropriate in accordance with the ratio of price and quality.With the arrangement of heating a greenhouse gas, there will be no problems if your site is fully gasified.
In this case, the heating system uses the greenhouse gas heaters or burners which are evenly distributed around the perimeter of the heated space.In the case of a small area greenhouses as heat source gas cylinders can be used, while at high amounts of the heated area would have to resort to a centralized connection to the main greenhouse gas supply system.
Gas heat sources are a source of carbon dioxide necessary for plant life.To ensure uniform distribution of carbon dioxide to the greenhouse area mounted fans.
heating greenhouses video
heating greenhouses with electricity
as a cheaper alternative to gas, which is necessary to pay close attention, serves electric heating greenhouses, which is organized by the Mobile fan heaters.The design of such devices includes built-in thermostat, which greatly facilitates the operation of such devices, and allows you to reach the required temperature as quickly as possible.If you are planning to organize a year-round operation of the greenhouse, it is desirable to complement the design of the cap sufficiently high, the most suitable material for the arrangement of which is considered to be a brick.
Heating greenhouses using electric fans, of forcing the warm air is not the only method of heating greenhouses by means of electrical energy.No less prevalent greenhouse heating cable, which is organized on the principle of "warm floor".The main advantage of this method is that its implementation does not need to occupy a large space in the greenhouse, so the whole system is laid under the ground, which not only saves space greenhouse, but also promotes the best heating of the soil, and then the air.Heating of the greenhouse space thermal cable, in terms of professional gardeners, is much more advantageous since it provides, primarily heating of the soil, which allows to adjust the temperature in accordance with the stage of plant development.In addition, opting for cable heating greenhouses, you can significantly reduce heating costs by installing an automatic temperature control system, the management of which does not cause any difficulties.
heating the soil in the greenhouse with an electric cable is considered one of the most reliable ways to heat the greenhouse space, which has a mass of indisputable advantages, special attention must be given including:
- significant increase in the range of cultivated plants (you will be able to groweven subtropical plants, extremely demanding temperature conditions);
- Regardless of varying temperature conditions of the environment;
- accelerate the growth of plants and extend their fruiting;
- increased productivity;
- And, of course, ease of installation activities.
How to heating greenhouses with an electrical cord?
- process of arrangement of the heating system starts with the laying of a thermal insulation layer, in a role which can be used materials, non-absorbent, such as polystyrene;
- further insulating layer covered with a layer of waterproofing, which is suitable for arrangement of plastic film;
- Next, a layer of sand is placed, equal to not less than 10 cm, which is placed over the heating cable laying step which is 15 cm. On top of the cable is filled 5-cm layer of sand;
- To prevent thermal damage to the cable is laid on top of the sand layer mesh-netting;
- At the end of the work, finished on top of the heating system poured a layer of fertile soil, equal to 35-40 cm.
water heating greenhouses
scheme of arrangement it is also quite simple.Along the perimeter of the greenhouse, for example, under the beds, or racks, lay a double row of water tubes, which subsequently closed on the electric boiler.To connect the boiler, which can be installed both outside and inside the greenhouse, a greenhouse is necessary to the electric cable.According to experts, the most advantageous to install the boiler outside the greenhouses, which must be pre-warmed to reduce heat loss.
Infrared heating greenhouses: how to reduce energy costs?
Space heating using infrared radiation with success continues to gain acceptance among consumers.Implementation of infrared heating in the greenhouse can significantly reduce the cost of electricity and, at the same time, to achieve the most uniform air distribution within the heated space.
infrared heat sources must be installed around the perimeter of the greenhouse and along the exterior walls, which will significantly reduce heat loss buildings.Opting for infrared heating, you should know that he is opposed to convection heating, heat contributes to the surrounding objects, which subsequently transfer thermal energy of the air.
It is on this principle, and based significant energy savings that can be achieved by infrared heating greenhouses.
look at the most common ways to heat greenhouses, we consider it necessary to note that the main objective pursued by the organization of system of heating a greenhouse is to create the optimal temperature and humidity of the environment most conducive to raising yields in colder seasons.We believe that for the correct and most efficient solution to this problem requires a comprehensive approach that involves the selection of the most durable greenhouse heating system operating in two main areas, namely:
- Warm air;
- Warm soil.
If we look at the problem in this context, the most optimal system is the cable heating greenhouses, which also provides heating and soil, and heated air, which will guarantee the successful operation of the heating system, and a significant increase in productivity.