Nowadays, the cost of using solar energy for households is still relatively high. Electricity consumption of 10 kilowatt hours per day may not seem significant at first glance. In fact, the required electricity generation power must be more than 2 kilowatts. because it is considered that cloudy days and nights cannot produce electricity and can use electricity. The current situation requires a relatively large capacity battery to store electricity. So your system will cost between 20,000 and 30,000 yuan. It can be used on household appliances such as televisions and computers as well as lighting. No matter how big or small the household appliances are, they won't work, such as air conditioners, induction cookers, microwave ovens, and water heaters.
How many kilowatt hours of electricity does it take to heat water by 1 degree?
Answer
The amount of energy required is 1000 kcal, which can be calculated directly using the definition of kcal. Kcal, also recorded as a capital letter C, is most often used on food labels. It is equivalent to the heat required to raise 1,000 grams of water 1°C to 1 atmosphere, which is approximately equivalent to 4,186 joules of internal energy. 1 ton is equal to 1,000 kilograms. It then takes 1,000 calories to increase the temperature by 1 degree. Since water has different specific heats at different temperatures, the amount of heat needed to rise 1°C is also different, so there will be differences in different temperature ranges
Question
p>How much energy is needed to heat 1 ton of water to a temperature of 10 degrees, which is equivalent to how many kilowatt hours electricity? Thank you
Answer
The formula for calculating the electricity consumption to heat 1 ton of water at 10 degrees: Q= CM△T= 1Kcal/kg. ℃x1Tx1000Kg/Tx10℃=10000Kcal The power generation capacity is basically fixed, which is 860Kcal/KW. Then the electricity required is: 10000Kcal÷860Kcal/KW=11.63KW Q=CM△T Q is. heat and m is mass △t is the temperature change value c is the heat released when an object burns a certain mass. The unit is J/(kg.℃)
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It takes 1.17 kilowatt hours of electricity to heat 1 ton of water to 1 degree Celsius
It takes 124 kilowatt hours of electricity to heat a ton of water to 55 degrees. The calculation method is:\x0d\The specific heat of water is 4.2 × 10^3 J/(kg × ℃), which means that the mass of water is 1 kilogram and the temperature increases (or decreases) by 1. ℃, the heat absorbed (or released) is 4.2×10^3 joules. 1 degree=1000W*3600S/H=36*10^5 Joules. \x0d\According to cmΔt=Q:\x0d\10^3*55* 4.2×10^3=23.1*10^7 Joules;\x0d\23.1*10^7 / (36*10^ 5) = 64.2 degrees Electricity\x0d\Since the maximum utilization rate of electric energy is only 52%,\x0d\therefore, the total electricity consumption = 64.2/( 52%) = 123.5 kWh. \x0d\\x0d\Specific heat capacity, represented by the symbol C, also known as specific heat capacity, called specific heat, is the heat capacity of a unit mass of a substance, i.e. -say the absorption of a unit mass of an object when it changes unit temperature. The ratio of the heat absorbed by a substance of a certain mass when the temperature increases to the product of the mass of the substance and the increasing temperature is called the specific heat capacity (specific heat) of the substance, represented by the symbol c .