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Title: Control of flow through a vapor generator

Abstract

In a Rankine cycle system wherein a vapor generator receives heat from exhaust gases, provision is made to avoid overheating of the refrigerant during ORC system shut down while at the same time preventing condensation of those gases within the vapor generator when its temperature drops below a threshold temperature by diverting the flow of hot gases to ambient and to thereby draw ambient air through the vapor generator in the process. In one embodiment, a bistable ejector is adjustable between one position, in which the hot gases flow through the vapor generator, to another position wherein the gases are diverted away from the vapor generator. Another embodiment provides for a fixed valve ejector with a bias towards discharging to ambient, but with a fan on the downstream side of said vapor generator for overcoming this bias.

Inventors:
Publication Date:
Research Org.:
UTC Power Corporation, South Windsor, CT (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175541
Patent Number(s):
6,962,051
Application Number:
10/463,002
Assignee:
UTC Power Corporation OSTI
DOE Contract Number:  
FC02-00CH11060
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Radcliff, Thomas D. Control of flow through a vapor generator. United States: N. p., 2005. Web.
Radcliff, Thomas D. Control of flow through a vapor generator. United States.
Radcliff, Thomas D. Tue . "Control of flow through a vapor generator". United States. https://www.osti.gov/servlets/purl/1175541.
@article{osti_1175541,
title = {Control of flow through a vapor generator},
author = {Radcliff, Thomas D.},
abstractNote = {In a Rankine cycle system wherein a vapor generator receives heat from exhaust gases, provision is made to avoid overheating of the refrigerant during ORC system shut down while at the same time preventing condensation of those gases within the vapor generator when its temperature drops below a threshold temperature by diverting the flow of hot gases to ambient and to thereby draw ambient air through the vapor generator in the process. In one embodiment, a bistable ejector is adjustable between one position, in which the hot gases flow through the vapor generator, to another position wherein the gases are diverted away from the vapor generator. Another embodiment provides for a fixed valve ejector with a bias towards discharging to ambient, but with a fan on the downstream side of said vapor generator for overcoming this bias.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {11}
}

Patent:

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