has been busy all day. Taking a hot bath after get off work can relieve fatigue and promote sleep, which is a good thing!
Nowadays, common types of water heaters include electric water heaters, gas water heaters , and solar water heaters . These three water heaters are ranked among the three major water heaters.
, electric water heater has the advantages of convenient installation and unrestricted installation location. It is widely loved by people and occupies a certain share in the water heater market.
In life, I often hear that water heaters consume too much power. They consume a lot of electricity after using them several times a month, but when it comes to how much electricity the electric water heaters consume? How much electricity does it cost to take a bath? Few people know it.
Today, let’s measure how much power consumption is for different electric water heaters!
1. water storage electric water heater power consumption
The power consumption of water storage electric water heater depends on the water storage capacity of the electric water heater you purchased. The power sizes of different water outlets themselves vary greatly.
Take the ordinary 60L electric water heater as an example:
If the 60-liter electric water heater is turned on 24 hours a day, calculate according to 60L, the corresponding inherent white energy consumption coefficient ε=0.6, Q=0.015*60+0.8=1.7kW·h, the power consumption QPR=1.7*0.6=1.02kW·h
24 hours intelligent effect coefficient εdao=24 hours actual electricity consumption Qpr÷ standard Q (ε=Qpr/Q), among which the national standard Q=0.015C+0.8 (30L-100L capacity is applicable), and the power consumption is calculated according to the formula.
The medium temperature of most water heaters is set at 40~42 degrees, which is just the temperature that can be used to bathe hot water; when the ambient temperature is 20℃, the temperature drop within 24 hours should not exceed 10℃.
So take the 60-liter water storage electric water heater as an example, the maximum power consumption in 24 hours is 0.06*10*1.163=0.7 degrees; when the ambient temperature decreases, such as in winter, the temperature drop will be much greater in 24 hours, and the corresponding power consumption will be greater.
, heat 60 liters of 10 degrees of cold water to 60 degrees of hot water, the electricity consumption is: 60*4.2*1000*(60-10)/3.6*100000=3.5 degrees. Calculated based on 30 days per month, the electricity consumption of electric water heaters in one month: 3.5*30=105 degrees per month.
If the electricity consumption is 0.5 yuan, the monthly electricity bill for the 60-liter water heater is 105*0.5+0.7*30*0.5=63 yuan.
2. Instant-heat electric water heater
According to the law, the heat required when the water temperature rises at the same amount of water, the same power, and the heat required is certain, and the formula for the electric water heater to absorb heat: Q absorption = Cm△t
C is the water specific heat capacity
m is the mass of water (we usually talk about weight)
△t is the temperature of water increase
So, although the instant-heat electric water heater has a large power, its working time is short and the power consumption is not that high.
Nanokes 8500w instant electric water heater For example:
According to the physical formula: heat = specific heat × mass × (last temperature - initial temperature), heating 10℃ water to 45℃ requires almost 100 liters × 1 kcal/liter·℃ × (45℃-10℃) = 3500 kcal.
For electric water heaters, 1 kilowatt-hour = 1 kilowatt/hour = 860 kcal, Nox instant-heating electric water heater is 98.1% thermal efficiency, and heating 100 liters of water requires electricity: 3500 kcal ÷ (860 kcal/degree × 98.1%) ≈4.15 kcal.
also uses electricity at 0.5/kW. It costs 0.5*4.15*30=62.25 to bathe with a Noxx instant electric water heater for one month.
The above are the answers to the Nuokes Wallaby to introduce to you about the power consumption of electric water heaters in a month. I hope it will be useful to everyone. If you think this article is good, you might as well share this article with your friends around you!
