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。
2
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.