Heat exchanger, heat exchanger tube and methods of making and using same
First Claim
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1. A heat exchanger tube comprising a first portion, a twisted portion, and a transition portion between the first portion and the twisted portion, the transition portion including a reinforcing sleeve.
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Accused Products
Abstract
A heat exchanger tube is disclosed herein comprising a first portion, a twisted portion, and a transition portion between the first portion and the twisted portion. The transition portion includes a reinforcing sleeve. A heat exchanger formed from the tube and a method of forming a heat exchanger tube also are disclosed. The tube is useful in making a heat exchanger configured to operate at high pressures without mechanical failure.
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Citations
21 Claims
- 1. A heat exchanger tube comprising a first portion, a twisted portion, and a transition portion between the first portion and the twisted portion, the transition portion including a reinforcing sleeve.
- 6. A heat exchanger comprising an outer tube and an inner tube defining an annular opening therebetween, the inner tube including a first portion, a twisted portion, and a transition portion between the first portion and the twisted portion including a reinforcing sleeve formed thereon, the inner tube being configured to withstand a hydrostatic test pressure of at least 2600 psig for at least 2 minutes without mechanical failure.
- 15. A heat exchanger comprising an outer tube and an inner tube defining an annular opening therebetween, the inner tube including a first portion, a twisted portion, and a transition portion between the first portion and the twisted portion including a reinforcing sleeve formed thereon, the inner tube being configured to pass a fatigue test of 250,000 cycles between 118 psig and 418 psig at a rate of 0.5 cycles/second without mechanical failure.
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17. A method of making a heat exchanger tube comprising:
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forming a inner tube comprising a first portion, a twisted portion, and a transition portion between the first portion and the twisted portion, and forming a reinforcing sleeve over the transition portion. - View Dependent Claims (18, 19, 20, 21)
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Specification