La concentrazione di anidride carbonica nell'atmosfera è estremamente bassa e solo una piccola frazione di questa è attribuibile alle attività umane. Eppure è su questa porzione che si concentra gran parte del dibattito sul cambiamento che viene sbandierato in questi ultimi anni. The concentration of carbon dioxide in the atmosphere is extremely low and only a small fraction of this is attributable to human activities. Yet it is on this portion that much of the debate on change that has been trumpeted in recent years is concentrated. https://www.youtube.com/watch?v=_9AmAPhalLc

Reformed ex-climate alarmist: "There is no climate crisis... [There is] no consistent correlation between carbon dioxide and Earth's temperature—at times CO2 was 1300% of today, and we were stuck in very cold conditions... There is no foundation to the climate scare—it's all based on models that don't work." Source: https://youtu.be/Qdg4uQW8Dlg

http://www.julychem.com/dimethyl-ether/ Dimethyl Ether price What is dimethyl ether? Dimethyl ether is also called methoxymethane, dme gas or Dimethylaether, is an organic compound, a colorless and odorous flammable gas in the standard state, and its chemical formula is C2H6O or CH3-O-CH3. Relative vapor density (air is 1) 1.62, explosion range: 3.4鈥?7.0% (V/V), ignition temperature: 350掳C, dimethyl ether is easily soluble in water, alcohol and ether. DME is inert, non-corrosive, non-carcinogenic, and almost non-toxic. Dimethyl ether does not form peroxides on long-term exposure to air. It is a colorless gas under normal pressure and has a characteristic odor of ethers. As a substitute for freon, dimethyl ether is rapidly increasing in use in the aerosol and refrigerant industries. Dimethyl ether contains oxygen atoms, high thermal efficiency, complete combustion, clean tail gas without black smoke, and is an environmentally friendly fuel. With the rising price of petroleum and the environmental protection issues of vehicle and civil fuels, dimethyl ether, as a clean and environmentally friendly fuel, has attracted increasing attention from all walks of life. DME may become an important fuel in the near future. The price of petroleum products has been rising year after year, while the cost of coal-based dimethyl ether is low. DME will completely replace liquefied petroleum gas and partially replace diesel. Dimethyl ether fuel properties: (1) DME is an environmentally friendly non-pollutant, soluble in water and degradable. DME molecules are soluble in water, and can be degraded and soluble in water in the troposphere: rain and snow can absorb DME from the atmosphere, and it will not remain in the atmosphere forever. Degradation: In the atmosphere, large molecules become smaller molecules, long carbon chains become shorter carbon chains, and finally decompose into carbon dioxide and water. (2) DME has high combustion efficiency and low oxygen demand. Oxygen atoms are contained in the molecule of dimethyl ether, and the amount of air required for combustion is small: CH3OCH3+3O2=3H20+2CO2, the oxygen demand per kg of dimethyl ether is 1.46Nm3 Liquefied petroleum gas: C3H8+5O2=4H20+3CO2, the oxygen demand per kg of liquefied petroleum gas is 2.55Nm3 (3) DME is a clean fuel - clean, no black smoke. DME fuel has simple components and contains oxygen atoms, requires low air mixing, complete combustion, clean and no black smoke. (4) The economic benefits of dimethyl ether blending are the most obvious - the substitution ratio of blending is 1:1. When blending with liquefied gas, when the ratio does not exceed 25%, the substitution ratio with liquefied gas is 1:1. Reason: less oxygen demand, high thermal efficiency, when burning completely as fuel alone, the substitution ratio with liquefied petroleum gas is about 1.3:1. (5) At present, it is more reasonable to blend dimethyl ether - burner selection. When blending with liquefied gas, if the proportion of dimethyl ether does not exceed 25%, the liquefied gas burner can be used; when it is used as fuel alone, the natural gas burner can be used; it is best to use a special burner. Reason: The difference between oxygen demand and Wobbe index Wobbe index: Calorific value per unit volume/(relative specific gravity) 1/2 (6) DME has simple requirements for transportation and sealing鈥攕ealing materials. When blending with liquefied gas, the ratio does not exceed 25%, and the seals and hoses of liquefied gas storage, industrialization technology of the one-step process of syngas is not yet mature. 聽 The reasons are: 鈶?The existing technology has not been tested by the device; 鈶?Even according to the existing technology, its production cost is higher than that of the website:http://www.julychem.com/dimethyl-ether/

You might have noticed that most bars and pubs use a CO2 tank cylinder, where the drink is to be served. CO2 tank cylinders are used to pressurize the beer draft system. CO2 tank cylinder which is used for brewing, are mostly made from aluminum. They also come in steel tank is a variety is sizes.http://www.yacylinders.com/seamless-gas-cylinder/carbon-dioxide-cylinder/