cascade use of energy的意思|示意

I use steam, dragging a small turbine pumps, the exhaust steam comprehensive re-use, thus realizing the thermal power cogeneration, Cascade comprehensive utilization of geothermal energy.

利用余汽，采用小汽轮机拖动水泵，其排汽综合再利用，从而实现了热功联产，梯级综合利用热能。

Some methods are introduced to rebuild the normal cold storages into super-low temperature cold storages for full use of cascade refrigeration cycle with low production costs and energy expenditure.

针对我国冷库多、贮藏量大，但超低温冷库很少这一现状，介绍了在原有冷库的基础上，利用复叠式制冷方法将原有的部分冷库加装改造成超低温冷库，从而达到降低成本和节能的目的。