How to heat the vegetable greenhouse in winter, how to heat the inside of the vegetable greenhouse

How to heat vegetable greenhouses in winter, finned tube radiator is one of the more common heating equipment in industrial workshops in recent years, and is very popular with industrial plant users. The finned tube radiator is uniformly selected from the national standard seamless steel pipe, which is more firm, and will not cause open welding, water leakage, etc., and the equipment is safer and more reliable. The finned tube radiator is composed of a heat dissipation inner core, which is a very important part of the finned tube radiator, and is the decisive factor for the radiator to be able to heat.

Finned tube radiator.

The inner core is the heat dissipation pipe, the heat dissipation pipe is the basic element for heat dissipation, it can be said that the design and installation of the heat dissipation pipe is related to the quality of the entire heating equipment. According to the number of radiator pipe layers, the model is also different, generally in 3 layers is better. Of course, the number of layers of the pipe also needs to be designed according to the different places of use, different use environments and different indoor temperatures for each user, and the more layers, the thickness of the frame also needs to be increased accordingly.

Finned tube radiator.

The appearance of the steel fin-wound radiator is an atmospheric silver-gray color, which can be suitable for any decoration style and any use environment. One of the main reasons why steel finned tube radiators are popular with many users is that their heating efficiency is very efficient, which is several times or even dozens of times that of general heat dissipation equipment. When installing finned tubes, the spacing of the heat exchanger is an important factor affecting the heating effect of the radiator, and it is particularly important to choose a suitable spacing.

Finned tube radiator.

<> Hot water heating: The boiler is used to transport hot water to the radiator in the greenhouse through the pipe to heat up the vegetable greenhouse. Hot air and warm air:

There are two main types of hot air heating: hot air fan and hot blast stove, and the heating method is that the hot blast stove delivers hot air to the greenhouse through a perforated pipe. Electric heating: The use of electric current through a resistive conductor to convert electrical energy into heat energy to heat the air or soil, its main device is electric heating.

1. Plumbing and heating. The hot water heating system consists of three parts: hot water boiler, heating pipe and radiator. The hot water heating system runs reliably, the thermal stability in the greenhouse is good, and even if the performance system fails, when the heating is temporarily stopped, the 2-hour hood will not have a big impact on the crops.

Hot water heating is a common warming method in greenhouses.

The radiators used in hot water heating include light pipe radiators, cast iron radiators, cast iron socks for round wing radiators, and hot-dip galvanized copper radiators, among which the hot-dip galvanized copper radiators have large heat dissipation, good thermal performance, high pressure, smooth pipes, small water flow resistance, uniform heat dissipation, comfortable appearance, corrosion resistance, and the most used heating options. The radiator is simple to install, economical, flange connection, light weight, energy saving, and easy to maintain.

2. Hot air heating. The hot air heating system is composed of a heat source, an air heat exchanger, a fan and an air supply pipe. The heat source can be coal-fired, oil-fired appliances or electric heaters, as well as hot gas or steam.

The air heat exchanger of the steam, electric or water heating heating system is installed in the greenhouse and directly supplies hot air in conjunction with the fan; Oil-fired and gas-fired hot blast stoves are installed in the greenhouse, and the flue gas after combustion is discharged outside the greenhouse; Coal-fired hot blast stoves are large in size and are generally installed outside the greenhouse. In order to evenly distribute the hot air in the greenhouse, the hot air is generally sent into the ventilation duct with a fan, and the hot air is evenly sent to the greenhouse by the ventilated duct with the opening.

Vegetable greenhouse heating, vegetable greenhouse finned tube heat dissipation equipment is commonly known as convection radiator, with corrosive gas in industrial buildings or relative humidity in the use environment, should be selected corrosion-resistant finned tube radiator, when the selection of aluminum finned tube radiator, should be selected internal anti-corrosion aluminum finned tube radiator, and satisfied with the requirements of the product for water quality, with better counseling equipment, touch thermal resistance its impact is very large, if the touch thermal resistance is not good, then the impact on heat dissipation will reach more than 20%. The height of the fins is improved, then the heat dissipation area is added, and then the heat dissipation amount is added.

Finned tube radiator.

The finned tube radiator of the vegetable greenhouse is made of carbon steel, which has high pressure resistance, and the steel winding has good resistance and is not easy to crack. Because the welding flange is then hot-dip galvanized surface treatment on the surface and inside of the pipe, the corrosion resistance of the radiator as a whole is lost. Finned tube radiator fin radiator specification greenhouse radiator is a special radiator specially planned for large-scale indoor heating such as greenhouses.

The finned tube radiator has a large heat dissipation area, and its service life can reach more than 20 years, which is one of the radiators commonly used in greenhouses. It is easy to cast, and the anti-corrosion function is also strong, and all of them must be tested by flaw detection and pressure test. The method and number of heat pipes placed in the inner movement can be processed according to the condition of the actual equipment.

Finned tube radiator.

The steel finned tube is composed of a steel frame and a heat dissipation pipe, in which the heat dissipation pipe is supported by a perforated plate, which can eliminate stress problems due to thermal expansion and cold shrinkage, and is resistant to high temperature, corrosion and durable; It is widely used in drying, heating and ventilation systems in air heating and cooling air conditioning systems. Applicable characteristics of steel finned tube radiatorSteel finned tube convection radiator is composed of a convection hood with a heat dissipation inner core, which is mainly convection heat dissipation, with high heat dissipation efficiency, good decoration, easy to reach harmony with the indoor environment, light weight, live convection hood, simple installation and maintenance, economic and energy-saving, and environmental protection. <>

Finned tube radiator.

About how to heat in the vegetable greenhouse for you to introduce 2 ways: one is to use a light pipe radiator for heating, the other is to use a finned tube radiator for heating, the following is to introduce you to the difference between the two.

The length of the single tube of the finned tube is generally 6 meters, and the total length can also be selected at will according to the specific conditions of the construction site, and the connection form is flange or standard thread connection. It has excellent heating efficiency, large heat dissipation area, light weight, beautiful appearance and shape, and simple installation. Greenhouse round wing finned tube radiator greenhouse round wing finned tube radiator is a new type of low-carbon heat dissipation equipment made in recent years, finned tube radiator instead of the traditional cast iron radiator and steel radiator, can provide a certain growth environment for the plants in the greenhouse, improve the benefits of plants.

Finned tube radiator.

Greenhouse round wing fin tube radiator greenhouse round wing fin tube radiator is made of excellent low carbon steel, high pressure resistance, and steel winding toughness, not easy to crack, can be arranged in any area of the room according to the requirements of the group width rock Wuhe, greenhouse radiator heat dissipation area is large, light weight, small footprint, beautiful appearance, easy installation, uniform heat dissipation, easy to adjust temperature, can be arranged and combined in any position indoors according to the need. The round-wing finned tube has a wide range of applications, not only in greenhouses, but also in chemical and petroleum, power plants, and industrial fields.

Finned tube radiator.

The diameter of the steel pipe used in the steel light pipe radiator type B is generally used, and the diameter is generally 2 inches, 3 inches, and can reach 6 inches. The larger the diameter of the light pipe radiator, the better the heat dissipation effect. The structure of the light pipe radiator is "S" type, and different pipe diameters can be selected according to people's needs.

The steel light pipe radiator B-type has a compact structure and a wide range of applications, which can be used in various large-area places. It can use its own heating mechanism, using convection heat dissipation to heat the heat directly with the cold air in all corners of the room. It can also be changed according to the use environment of the light pipe radiator, the indoor thermal insulation performance, the outdoor temperature and other skills.

Optical pipe radiator.

Steel light pipe radiator type B usually adopts the form of wall mounting, which saves indoor space to a greater extent, because the light pipe radiator hot water type has ground legs, so it can also be installed in the form of standing, Zaoxun makes the radiator more stable and safer to use. The surface of the steel light pipe radiator B type is smooth, the appearance is simple, not only beautiful, can adapt to the environment of a variety of fields, and the smooth surface is not easy to accumulate dust, even if there is dust, it can be gently wiped with a wet rag, easy to clean, and used in a variety of fields.

Optical pipe radiator.

These two methods are the use of finned tube radiator and light pipe radiator for heating, the following is a brief introduction to the advantages of these two products.

Finned tubes are mainly used in heat exchange equipment in various fields, such as workshops in the industrial field, greenhouses in the agricultural field, chemical workshops, light factory rooms, food drying workshops, etc., finned tubes are widely used, the equipment runs safely and stably, and has a wide range of applications. The finned tube is mainly made of steel pipe and steel belt or aluminum strip through the processing of special equipment to make a heat exchange element, its structure is compact, in the process of use to improve the safety and stability of the equipment, so it is very popular in recent years.

Finned tube radiator.

As a heat exchange element, the finned tube can be welded to the base tube radiator according to people's actual needs, and is usually welded on the side with worse heat exchange efficiency, which is used to improve the heat exchange efficiency of the heat exchange side and improve the overall heating effect of the radiator. The finned tube is usually connected by ridge flange and elbow pipe, and the connection method is reliable, which can ensure that the radiator connection between groups is tight, and it is not easy to cause water leakage and air leakage, which improves the safety and reliability of the radiator.

Finned tube radiator.

The optical pipe radiator is generally made of steel pipes, and the steel pipes are connected horizontally and vertically to form a simple pipe type structure, and the convection heat dissipation method is used for excellent heat dissipation, and different pipe diameters, different pipe layers and different lengths of light pipe radiators can be selected according to the use area and place of use of different orange field stalls. The light pipe radiator includes two kinds of A-type light pipe radiator and B-type light pipe radiator, their raw materials are generally seamless steel pipes, and some people in order to make the cost more economical and round, B selection of light pipe radiators can also be used as raw materials welded steel pipes.

Light Row Tube. The structure of the light pipe radiator A type is a "mesh" type structure, there is no ground leg, and the wall-mounted installation form is mostly adopted, and the structure of the B type is the "S" type structure, this radiator has a ground leg, so it can be installed in the form of standing or wall mounting, and people can choose according to their needs. The light pipe radiator type A uses steam heating, type B uses hot water heating, strong adaptability, and is widely used in agricultural greenhouses, industrial workshops, chemical plants, food workshops and other large-area places, with high heat dissipation efficiency and large heating area.

Light Row Tube.

<> vegetables suitable for planting in winter greenhouses mainly include leeks, garlic sprouts, chrysanthemum, spinach, lettuce, coriander, celery, eggplant, beans, green peppers, fungus, chives, tomatoes, etc. When planting, it is necessary to take into account the biological characteristics of the crop, the environmental conditions in the greenhouse, and the market**.

1. Winter greenhouses are suitable for growing vegetables

1. It is suitable for planting vegetables.

The vegetables suitable for planting in the winter greenhouse mainly include leeks, chives, coriander, celery, garlic seedlings, chrysanthemum, spinach, lettuce, fungus, rape and other vegetables with strong cold resistance, as well as tomatoes, eggplants, beans, zucchini, green peppers and other out-of-season vegetables.

2. Considerations.

1) If the night temperature of the greenhouse can be kept at about 15, almost all vegetables can be planted. If the night temperature of the greenhouse can be kept at about 10, nightshade vegetables can be planted. If the night temperature of the greenhouse can be maintained at about 8, most of the leafy vegetables can be planted.

2) In addition to considering the survival of crops, it is also necessary to consider the market, and try to choose suitable off-season crops for planting in order to achieve better returns.

2. Precautions for planting greenhouses in winter

1. Keep warm and moisture-proof.

1) Cover the greenhouse with strong warmth in time, and check whether the greenhouse is damaged. If the conditions are good, a small arch shed can be erected in the greenhouse, and a straw curtain can be covered above the small arch shed to increase the temperature in the shed. If the temperature demand is still not met, the greenhouse can be heated by adding lights or using heating wires.

2) If the weather is good, you can open the greenhouse for ventilation at about 9 o'clock in the morning, and close the greenhouse in time at about 4 o'clock in the afternoon and re-cover the warm objects.

3) In case of heavy snowfall, clean the snow on the greenhouse in time to avoid the collapse of the greenhouse.

2. Fertilization and watering.

1) Apply 1000-1500kg of agricultural manure per mu, and at the same time loosen the soil from time to time to increase the soil surface temperature.

2) When the weather temperature is low, spray potassium dihydrogen phosphate solution on the leaves of crops, a total of 1-2 times, which can effectively improve the cold resistance of crops.

3) Control the amount of nitrogen fertilizer.

4) Water at noon when the temperature is high and ensure that the water temperature is balanced.

3. Seedling pest control.

1) After 15 days of planting, fumigation and disinfection are carried out with chlorothalonil smoke removal agent in the greenhouse. After 7 days, spray carbendazim on the ground.

2) When diseased leaves or weak vegetables are found, remove them in time to prevent the spread of pests and diseases.