Control of variable speed chilled and hot water pumps

[cdbrock]

In talking with local design engineers, I'm told that variable speed chilled/hot water pumps typically control the pump speed to maintain constant system pressure across the building load. Wouldn't it be simpler to control pump speed to maintain a set delta temperature across the load? If so, what type of equipment would be needed to accomplish delta T control? Thanks.

 

[chief]

An AMOT temperature control valve would fit the bill.

Offshore Engineering&Design