First, the temperature requirements of a modern large-scale breeding farms on the temperature requirements are relatively high, from the pig's mating, pregnancy, childbirth period, the piglets conservation, pigs, the temperature requirements are very strict. From the designs we have completed for several large pig farms, we can see that there are strict requirements on the temperature of each breeding stage of the farm, and the temperature change period is within one week during the more important stages. Accurate and automatic temperature adjustment is very important. 2. Epidemic prevention is the key. A modern large-scale farm should minimize indoor dust, microbes, bacteria, and viruses to spread around with the flow of air, and in the event of an outbreak, control the spread of the epidemic and effectively isolate it. This requires that the convection of the air inside the farming room should be reduced, ventilation equipment should be disinfected, and each breeding room should be independent and can be closed at any time. Third, the design of heating plants in the heating plant design will encounter the following problems: height, span, door and window area, heat transfer coefficient of the thermal insulation structure, resulting in a high heat load of the aquaculture plant in the winter heating; and due to The temperature gradient is large, the air is severely stratified, resulting in the phenomenon of upper heat and cold; the cold wind penetrated by cracks such as doors and windows also increases the demand for heat load. At present, traditional heating methods mostly use heater chips, heaters, air conditioning systems or floor heating. Heater heaters, air heaters, and air-conditioning systems are used to heat air. In order to meet job requirements, heat loads can only be increased and equipment can be added to solve the problem. This results in increased investment, wasted energy, and is inconsistent with the principle of environmental protection. In the form of strong indoor air flow. This is because of traditional heating radiator heaters and air conditioning systems. After heating the air, the hot air must rise, and the relatively low-temperature air will be replenished. As a result, dust, microorganisms, bacteria, and viruses in the room will spread around with the flow of air. This is detrimental to animal husbandry. The floor heating will increase the breeding of bacteria in the breeding farm. In the electromagnetic spectrum of the Earth's energy provided by the sun, cosmic rays with a wavelength of 10 ˉ 8 μm or less have wavelengths of thermal radiation in the range of 2-10 μm. Infrared radiant heating is mainly used to simulate the section of solar energy that generates waves that are heated only by the radiator and do not heat the air. In the aquaculture factory, the pig itself and the equipment tools are the objects of heating, not the air in the heating space, and the objects to be heated absorb and store the heat energy in the infrared heating system and then contact the air according to their own physical and chemical structural features. The surface transfers heat to the heating space, so there is no air stratification and no air convection, which also solves the problem that breeding plants have been plagued by heating solutions. Hot water radiators, gas heating equipment, including convection heaters There is a big disadvantage in the heating process, which is the strong air flow in the interior. This is because of the traditional heating radiators. After heating the air, the hot air must rise, and the relatively low-temperature air will be replenished. As a result, dust, microorganisms, bacteria, and viruses in the room will spread around with the flow of air. This is detrimental to animal husbandry. Radiant electric heating equipment for large-scale farming plants should have the following characteristics: 1. Good conversion efficiency: The conversion efficiency directly affects the cost of equipment operation. Among the numerous electric radiators, the French TRESCO breeding factory special electric radiators The conversion efficiency reaches 98%. 2. Anti-corrosion performance: The sour gas generated from livestock manure in the breeding plant and the daily cleaning moisture are very corrosive to the equipment, directly affecting the service life of the equipment, so the anti-corrosion requirements of the heating equipment are required. Higher, special electric radiators and associated temperature control systems for the French TRESCO breeding plant have undergone special anti-corrosion treatment and have reached a service life of 50 years. 3. Safety: The product manufacturer's production experience, whether the product has obtained the domestic and international certification standards, there is no professional technical personnel and company background to provide a complete pre-sale, sales and after-sales service, which is also a problem that users are more concerned about. , Control and energy saving: The accuracy of temperature control in the heating system directly affects the growth cycle of the livestock. Longer cycle results in lower cost, which in turn affects the economic efficiency of the breeding plant. 4. Compared with other heating methods, radiators that save energy in the traditional way of heating will form a temperature layer with a large temperature difference during the heating process. The temperature at the top of the room is high. If the temperature in the room is as high as 25C or more at 1.5 meters, a large amount of heat energy will be wasted. The heating efficiency of heating is only about 60%. The radiation-type electric heater is characterized by indoor air-free stratification, the indoor temperature is uniform, the loss of heat energy is small and further saves a lot of energy. Fifth, the use of electric heating equipment can make full use of the power grid during the low price preferential electricity policy in the north of the winter night heating equipment working time is longer, about twice the daytime. At present, power departments throughout the country have established preferential tariff policies for electricity grids during low-grid power grid periods (half valley electricity prices in Beijing, Liaoning, and Jilin provinces are half of normal electricity prices). In the design of electric facilities for large-scale pig farms around the country, it is necessary to design and install a time-shared energy metering device for electric heating facilities. 6. One-time investment in animal husbandry farms The one-time investment in winter heating facilities should be considered for joint expenses. The use of radiant electric heating methods, due to the use of electric capacity and radiant heater prices higher than the cast iron radiator. This will increase part of the investment for project investors. So is it not a one-time comprehensive investment using radiant electric heating facilities? That's not necessarily.
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