Title: simple pursuit of efficiency is a common error in energy-efficient emission reductions
A high energy-efficient building in beijing has a winter heating temperature of 24°c and a separate new wind system, with an average total heat consumption of 25°w per square metre for winter heating, while the beijing municipal energy-saving standard is 18°c for winter heating and an average heating energy consumption of 20. 1°w per square metre. Looks like the former is more energy-intensive anyway. However, the developers of the former noted that if their energy consumption were equivalent to room temperature of 18°c, the average heat consumption of the heating system would be 10. 5 w per square metre, which is half below the energy-saving standards of beijing city
This comparison, which has always been referred to in the name of “science”, has been frequently cited by developers and salesmen, giving the impression of “energy conservation” in the minds of consumers, who, in fact, have always found themselves spending significantly more on energy consumption。
What's energy saving? Are we simply looking for efficiency or are we looking for real energy consumption? The answer is definitely the latter。
Several houses in beijing, known as energy-efficient, hot and wet houses, removed the balcony and delivered dryers to owners in order to resolve the problem of drying clothes. As a result, the dryer consumes more electricity than ordinary household electricity combined. Some teachers at the university of tsinghua found the cost too high to use a division air conditioner。
However, the majority of the chinese public remains convinced of the united states, some european energy conservation companies and experts. Even domestic producers use the concept of “energy conservation” to create commercial “traps”。
Many consumers have chosen to buy facs because of the concept of energy efficiency. Variable frequencies can be used to reduce wind speeds when the temperature in the house is low in order to increase efficiency. In china, however, most consumers are used to heat up the air conditioners, turn them off a little faster, and then turn them on when they are hot, so that they consume more electricity than normal air conditioners。
Not only ordinary consumers, but even university students with relevant expertise, are vulnerable to energy-saving mistakes. The department of architecture of the university of tsinghua has used a post-graduate entrance examination in the past few years: please evaluate electric heating in terms of energy conservation, environmental protection and indoor comfort. As a result, 80 to 90 per cent of students each year answered that the heating was energy-efficient and environmentally friendly. The fact is that electricity heating is not energy-efficient, because it spends 350 grams of coal each, but the heat generated at one time is only 120 grams of coal。
