LFSP series pump water curtain spray chamber and exhaust pipes in addition to any other system components, so the equipment operation safe and stable performance.

In the experiment, a secondary water recovery system is set to reclaim waste heat from engine jacket coolant and exhaust, which is a very important part of GEHP.

This paper analyzes several proposals of air exhaust and smoke exhaust in highrise building basement, and briefly introduces electric valves in application of aircodition water system.