Power plants – Motive fluid energized by externally applied heat – Having condition responsive control
Reexamination Certificate
2005-02-03
2009-11-17
Nguyen, Hoang M (Department: 3748)
Power plants
Motive fluid energized by externally applied heat
Having condition responsive control
C415S031000, C415S044000
Reexamination Certificate
active
07617681
ABSTRACT:
A method and apparatus for controlling the flow of a working medium through an expansion device in a closed heating system which also includes a condenser, a pump and a boiler. The expansion device is a helical screw rotor expander that has an inlet port with an inlet line connected thereto, and an outlet port. The expansion device drives an energy producing device, such as a generator. The helical screw rotor expander has an intermediate pressure port between the inlet port and the outlet port, and a branch line is connected between the intermediate pressure port and a branching point in the inlet line. A valve is in the branch line. The flow of working medium through the valve to the intermediate pressure port is controlled as a function of a state parameter.
REFERENCES:
patent: 3097490 (1963-07-01), Callan et al.
patent: 3994137 (1976-11-01), Yasumoto et al.
patent: 4598551 (1986-07-01), Dimitroff et al.
patent: 4738111 (1988-04-01), Edwards
patent: 5327987 (1994-07-01), Abdelmalek
patent: 6174151 (2001-01-01), Yarr
patent: 6185956 (2001-02-01), Brasz
Frishauf Holtz Goodman & Chick P.C.
Nguyen Hoang M
Svenska Rotor Maskiner AB
LandOfFree
Method and means for controlling a flow through an expander does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and means for controlling a flow through an expander, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and means for controlling a flow through an expander will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4101414