The most commonly used air conditioners in homes are wall-mounted air conditioners and cabinet air conditioners. Which type of air conditioner is selected is mainly determined by the space in the home. 1. Wall-mounted air conditioner Wall-mounted air conditioners are also commonly referred to as split air conditioners. Such air conditioners do not take up too much home space and adapt to more home environments. The versatile features allow it to be combined with interior decoration. In addition, wall-mounted air conditioners are less noisy, and some split air conditioners have multiple purification functions, which can purify indoor air, and also have split-type air conditioners with ventilation function to ensure health. However, due to the fact that it will be installed at a high place, wall-mounted air conditioners have caused some difficulties in cleaning and maintenance. Then there is an installation. It is not easy to move a place. Consider thoughtful before installing. 2, cabinet air conditioner The biggest characteristic of the closet type air conditioner is that it has a large amount of cooling and heating. It is necessary to adjust the temperature in a wide range of space, such as a large living room or a commercial place, and the closet type air conditioner is most suitable. Its beautiful appearance, there is a certain degree of flexibility, cleaning is also very convenient. However, it will occupy part of the family space. When selecting, you should pay attention to whether there is negative ion sending function, because it can clean air and ensure health. Some of the closet-type air conditioners have a mode lock function. The operating status is controlled by the owner. It is useful for businesses and families with children in the home and can avoid unnecessary damage. In addition, it is also important that the air supply range is sufficiently wide enough. At present, the farthest distance of air supply for the open-type air conditioners can be more than 15 meters. With the wide-angle air supply, a larger area can be taken into consideration. Select frequency or selected frequency? Before making a choice, you must first understand the difference between the two. In simple terms, in a room with the same temperature, the air-conditioning produced in a fixed-frequency air-conditioning unit is fixed. When the room temperature drops below the set temperature, the air-conditioning will automatically stand by; when the temperature rises to the standard, the air-conditioning will be Start again. Fixed-frequency air conditioners use switchers to maintain temperature. Inverter air conditioners, as the indoor temperature decreases, it will automatically adjust the air conditioning operating frequency and become slow cooling. If the temperature rises for any reason, inverter air conditioners will increase cooling capacity. That is to say, inverter air conditioners have been working at a constant room temperature by controlling their own cooling capacity. Compared to fixed-frequency air-conditioning, inverter air conditioner has the following advantages: 1. Energy-saving. Through the change of compressor operating speed, when the room temperature is approximately constant, the air-conditioning cooling capacity is fixed, which not only saves power but also prolongs the service life of the air conditioner. 2. The noise is low. After the room temperature reaches a constant value, the vibration becomes smaller and the noise is reduced because the compressor operation rate becomes lower. 3. High temperature control accuracy. The air conditioner continues to work. The cold air produced in a unit of time is the same as the heat emitted by all objects in the room, and the room temperature can be kept at a relatively constant value. However, fixed-frequency air-conditioning is not without merit, compared to inverter air-conditioning, its price will be relatively cheaper. And the inverter air-conditioning power saving is based on the premise of continuous use of air-conditioning for a long time. For example, in many parts of the North, there are communal facilities in the winter, and air-conditioning is used every year for three to four months. The rest of the time, air-conditioning is basically eating gray, and the advantage of frequency conversion is not obvious. Air conditioning air conditioning
Food Additives Refers to the production of food by the food manufacturer in the process of adding some chemicals, used to change the color of food, smell, or adjust the food taste and prolong the preservation time (preservatives, antioxidants), but some will Leading to cancer, such as many of the meat material added by some of the substances in the stomach due to protein, stomach acid, additives generated by the interaction of nitrite, can lead to physiological and chronic lesions. These chemicals are known as food additives.
main effect
Food additives have greatly contributed to the development of the food industry, and known as the soul of the modern food industry, which is mainly to the food industry to bring many benefits, its main role is as follows:
1. Preserving to prevent deterioration such as: preservatives can prevent food spoilage caused by microorganisms, extend the shelf life of food, but also have to prevent the pollution caused by microbial poisoning. Another example: antioxidants can prevent or delay the oxidation of food deterioration, to provide food stability and resistance to storage, but also to prevent the possible harmful oil automatic oxidation of the formation. In addition, can also be used to prevent food, especially fruits, vegetables, enzymatic browning and non-enzymatic browning. These are the preservation of food is of a certain significance.
2. Improving the sensory properties of food The color, smell, taste, shape and texture of food are important indicators of food quality. Appropriate use of colorants, colorants, bleach, edible spices and emulsifiers, thickeners and other food additives, can significantly improve the sensory quality of food to meet people's different needs.
3. Maintain or improve the nutritional value of food in food processing properly add some of the natural nutritional range of food nutrition enhancer, can greatly improve the nutritional value of food, which prevent malnutrition and nutritional deficiencies, promote nutritional balance, improve People's health level is of great significance.
4. Increased variety and convenience of food The market now has as many as 20,000 kinds of food for consumers to choose, although most of these food production through a certain packaging and different processing methods, but in the production process, some color , Fragrant, taste with the whole product, mostly to varying degrees to add the coloring, aroma, seasoning and even other food additives. It is these a lot of food, especially the convenience of food supply, to people's lives and work to bring great convenience.
Now commonly used food pigments include two categories: natural pigments and synthetic pigments. Natural pigments come from natural, mainly extracted from plant tissue, and also include some pigments from animals and microbes. Synthetic pigment refers to the use of artificial chemical synthesis of organic pigment, mainly in coal tar separated from the aniline dye made of raw materials. In the course of a long period of Food Additive reporting process, because people do not recognize the harm of synthetic pigments, and synthetic pigments and natural pigments compared with bright color, strong coloring, stable nature and cheap, many countries in the The food processing industry generally uses synthetic pigments. With the development of society and the improvement of people's living standards, more and more people in the use of synthetic food in the food will not cause harm to human health questioned. At the same time, a large number of research reports that almost all of the synthetic pigment can not provide nutrients to the human body, some synthetic pigment and even endanger human health. Eat a fine snack, fast food lunch, fragrant hot dog, glance at the printing of exquisite packaging food on the nutritional table, you will find that each food has additive ingredients. It is understood that the conversion of fat, refined cereal products, salt, high fructose syrup four components in the processing of food is the most common, these ingredients harm the human health. Some if there are too much harm, such as: citric acid, aspartame, sodium Finland white pigment, vanillin, potassium ... basically no harm, as long as it is added But not excessive
Additives Food Additive,Food Grade Glycine,Food Additive Ethyl Maltol,Nutrition Enhancers SHANDONG ZHISHANG CHEMICAL CO.LTD , https://www.zhishangchemical.com First, the choice of air conditioning Second, select the frequency conversion or selected frequency
How can there be no "he" against the heat of summer? Air conditioning buy Raiders
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