当螺杆压缩机运行时，实际用于压缩空气所消耗的电能，在总耗电量中只占很小的一部分，约10%，其中大约90%的电能转化为热量，通过风冷或者水冷的方式排放到空气中。这些“多余”的热量被排放到空气中，热量被浪费，其中50%的废热可以使用，压缩机的轴功率为40%。

    When the screw compressor runs, the electric energy that is actually used to compress the air is only a small part of the total energy consumption, about 10%, of which about 90% of the electric energy is converted into heat, which is discharged into the air by air cooling or water cooling. The excess heat is discharged into the air, and the heat is wasted, of which 50% of the waste heat can be used, and the shaft power of the compressor is 40%.

    举个例子，单螺杆110kw空气压缩机，按照100%的负荷率，一天24小时运行；收费是按一年360天计算，发电成本为0.7元/千瓦时，柴油7000元/吨，而天然气是5元/立方米。

For example, the single screw 110KW air compressor runs 24 hours a day according to the 100% load rate; the charge is calculated at 360 days a year, the cost of power generation is 0.7 yuan / kWh, the diesel is 7000 yuan per ton, and the natural gas is 5 yuan / cubic meter.

热回收可以节省至少110 0.4 = 44kw电力。

三种不同的能源转换如下：

节电率是每年38万200度，相当于26万6100元。

柴油31820.36kg保存每一年，这是22万2200元。

每一年，我们36326.4m3节省天然气，这是18万1700元。

Heat recovery can save at least 1100.4 = 44kw of power.

The three different energy conversions are as follows:

The electricity saving rate is 380 thousand and 200 degrees per year, equivalent to 266 thousand and 100 yuan.

Diesel 31820.36kg is stored every year, which is 222 thousand and 200 yuan.

Every year, our 36326.4m3 saves natural gas, which is 181 thousand and 700 yuan.

    空气压缩机产生余热提供热源。空气压缩机余热回收装置中的热量由热水交换产生。热水流经原供热系统，储存在保温箱，然后热水由原来的加热系统发送到整个工厂的宿舍楼，和热水，不使用加热保温水箱通过循环水泵。整个循环过程由循环水泵完成，辅助水位由原供热系统完成。当空气压缩机在节假日停止运行时，原有的供暖系统自动启动供暖。

Air compressor produces waste heat to provide heat source. The heat of the air compressor waste heat recovery device is generated by hot water exchange. Hot water flows through the original heating system, stored in the incubator, and then hot water is sent from the original heating system to the dormitory building of the entire factory, and hot water, without using the heating and thermal insulation water tank through circulating water pumps. The whole circulation process is completed by the circulating pump, and the auxiliary water level is completed by the original heating system. When the air compressor stops running during holidays, the original heating system automatically starts heating.