conversion of low grade heat to higher grade heat

Is it possible to produce a tiny fluid stream at 110 C from a large
fluid reservoir at 50 C?

Basically I'm wondering if a thermal analogy to the hydraulic ram
exists.

http://www.linear.com/pc/downloadDo***ent.do?navId=H0,C1,C1003,C1142,C1114,P1134,D4162
(page 2)

"This device allows some of the energy in the stream of water flowing
from point A [downwards] to point B to be
diverted to pump a smaller amount of water from point B to point C
[which is above point A]."

Thanks,

Michael