The fermentation bed is not hot in winter and summer, why?

The fermentation bed is not hot in winter and summer, why?
With the pig-raising technology in the fermentation bed, which was once dubbed the "Lazy Han Pig Raising Act," broadcasted at the Central Taiwan Station and various local stations, pig breeding in the fermentation bed has attracted the enthusiasm and interest of farmers and distributors. Some people who have used or contacted such technologies a few years ago are not surprised at all because they have already seen or personally manipulated the fermentation bed in practice, and have no doubt about other working principles. However, some people who have never met the fermentation bed technology and are accustomed to reading the text, believe that the fermentation bed is warming and warming in the winter to understand, always worry that the summer will be hot or hotter than the cement bed, take it for granted that the outside temperature is high in summer plus The heat produced in the fermentation bed, where the two calories are “superimposed,” can make the pig unbearable and unsuitable for growing pigs on the bed surface, thus questioning the feasibility of the fermentation bed technology. This kind of forgotten understanding has hindered the promotion and application of microbial engineering technology in the aquaculture industry, which is not conducive to allowing farmers and distributors to quickly enjoy the considerable economic benefits and eco-environmental benefits brought by high-tech achievements.
In fact, the fermentation bed is similar to the hot spring, and the internal fermentation temperature and the external surface temperature vary little with the seasonal climate. The surface of the normal operation of the fermentation bed is basically constant temperature twenty degrees, generally not due to the sudden increase in summer heat to thirty to forty degrees, nor will it fall to several degrees due to the cold weather in winter. However, people's hands feel cold in winter and cool in summer, which is due to the large changes in the ambient temperature.
Fermentation beds are not hot in winter and summer, why?
First, the fermentation bed is basically a constant temperature bed. A 50-cm thick dunnage fermentation bed (Ferment bed made with fermented bed fermentor is generally only 50 centimeters thick, and other products generally require a bed thickness of 90 centimeters to 1 meter). , regardless of winter and summer, its internal core fermentation layer is in the range of 40-55 °C. However, the temperature of the underlying fermentation and the amount of heat it generates, after passing through other litter mediums that are not fermented or have a weak fermentation intensity, will gradually decay when they reach the surface. A few degrees.
This point is somewhat similar to winter people sleeping in bed, the temperature inside the bed is about 30 °C, the body inside the quilt by the body temperature of about 37 °C continue to generate heat, but the quilt is a cool feeling of the outer layer of the hand touched, The temperature in the room may be only 17-18°C, which is almost the same as the fermentation bed. The reason for this is that the heat transfer through a few centimeters of the bedding heat is not much, and the outermost layer of the bedding is in constant contact with the air and frequently exchange heat. Therefore, the mattress is still cold and not hot.
Second, the surface of the fermentation bed does not produce heat. The surface of the fermentation bed can not be fermented, does not have the conditions for fermentation, and does not produce heat at all. Regardless of summer or winter, heat is transmitted from the middle and lower core fermentation layers. The hot, poor conductor—that is, the 10 to 20 centimeter surface litter, gradually decays to the surface only twenty degrees. To say the least, because the surface layer and the outside world exchange heat at any time, even if a little heat is generated, it will quickly disappear due to the rapid convection with the air. Therefore, in the summer, the surface of the fermented bed is touched by hand, and there is still a cool feeling like the surface of other objects in the room.
Third, the total number of strains and total amount of excreta are limited. The functional strains in the fermentation bed are constantly dying while they are growing. The functional microorganisms have a temperature zone suitable for their own growth and reproduction. If a certain temperature range is exceeded, some bacteria will die, and the heat generated will be It will be reduced, so that the temperature will drop; in addition, pig fecal urine that can be used by microorganisms (such as functional microbes in fermented bed fermentation agent) is also limited, over time, effective function of living microbial stock and pig manure stock It must be able to form a dynamic balance, so that neither the temperature nor the heat generated can rise or increase indefinitely.
Fourth, the fermentation bed can produce convective air flow. Because when the fermentation bed generates hot air that is slightly higher than the ambient temperature, the hot air rises, the cool air drops, or is injected from the periphery, plus there are also normal mechanically assisted ventilation ventilation, which can cause the air to form convection flow. Avoid the kind of warm and stuffy feeling, like a fan, but feel cool in the bed. In summary, the fermentation bed is basically a constant-temperature bed, which is not hot in winter and in summer. Details can visit the website or consult.

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