A family calculates the electricity cost of 15 bulbs
1. Ordinary light bulb electricity fee:
15 lamps × 40W / only × 5 hours / day × 30 days = 90000W / hour = 90 degrees
Carbon fiber is a microcrystalline graphite material obtained by carbonizing and graphitizing organic fibers. The carbon fiber has a microstructure similar to that of artificial graphite and is a layered …
1. High efficiency and energy saving: Compared with the same brightness, 3W LED energy-saving lamps consume 1 kWh for 333 hours, while ordinary 60W incandescent lamps consume 1 kWh for 17 hours, and ordin…
The stainless steel surface processing grades are analyzed in detail from the follo…
Relationship between 16MN seamless steel pipe and q345e seamless steel pipe
Q345E is a steel grade that belongs to low alloy high strength steel plate with good low temperature impact properties.
16Mn is: 16Mn called low-alloy high-strength structural steel Low-alloy high-…
In order to increase the luminous efficiency of an incandescent lamp, it is necessary to increase the temperature of the filament; and the higher the temperature of the filament, the faster the evaporatio…
Introduction
There are many types of ferroalloys and they are widely used. Ferroalloy is a kind of charge used in steel and metal smelting and casting. Used as a deoxidizer and a modifier. And add…
In addition to the prevalence of silica in the smelting of ferroalloys, most of them are concentrated in a few areas. For example, 90% of chrome ore is distributed in southern Africa, and manganese ore is…
In recent days, due to higher raw material prices, hardware products continued to rise. Many hardware products on th
Zhejiang Yongkang has an “old urchin†who loves drumsticks and has recently become fascinated by solar photov