Solar heat collection system and operation method thereof
AssigneeMitsubishi Hitachi Power Systems, Ltd.
InventorsKohei Shinozaki, Takahiro Marumoto, Kazuhito Koyama
Life of this patent
Estimating the term…
Abstract
The time for steam generated in a low temperature heating device to reach a saturated steam temperature is reduced a low temperature heating device configured to heat supplied water by using heat of sunlight to generate steam; a steam separation device configured to separate two-phase water-steam fluid generated in the low temperature heating device into water and steam; and a high temperature heating device configured to heat the steam separated in the steam separation device by using heat of sunlight reflected by a plurality of heliostats to generate superheated steam.
Claims5
A solar heat collection system comprising:
- a low temperature heating device configured to heat supplied water by using heat of sunlight to generate steam;
- a steam separation device configured to separate two-phase water-steam fluid generated in the low temperature heating device into water and steam;
- and
- a high temperature heating device configured to heat the steam separated in the steam separation device by using heat of sunlight reflected by a plurality of heliostats to generate superheated steam, wherein
- the low temperature heating device includes:
- a first heat collector including a plurality of first heat collecting tubes that are linearly disposed and a plurality of first reflective members that are linearly disposed in a longitudinal direction of the plurality of first heat collecting and configured to reflect the sunlight onto the plurality of first heat collecting tubes, the first heat collector being configured to focus light reflected from the plurality of first reflective members onto the plurality of first heat collecting tubes to heat water flowing in the plurality of first heat collecting tubes;
- and
- a second heat collector including a plurality of second heat collecting tubes that are linearly disposed in a plane, and configured to focus light reflected from at least a part of the plurality of heliostats to heat water flowing in the plurality of second heat collecting tubes,
- the first heat collector is disposed downstream in a water flow, the second heat collector is disposed upstream, and the first heat collector and the second heat collector are connected in series with each other, and
- the low temperature heating device further includes a flow channel switching mechanism configured to switch a flow channel of water between a first flow channel along which the water flows into the first heat collector through the second heat collector and a second flow channel along which the water bypasses the second heat collector and flows into the first heat collector.
An operation method of a solar heat collection system, the solar heat collection system including a low temperature heating device configured to heat supplied water by using heat of sunlight to generate steam, a steam separation device configured to separate two-phase water-steam fluid generated in the low temperature heating device into water and steam, and a high temperature heating device configured to heat the steam separated in the steam separation device by using heat of sunlight reflected by a plurality of heliostats to generate superheated steam, the low temperature heating device including a first heat collector disposed downstream in a water flow and a second heat collector disposed upstream and being connected with the first heat collector in series with each other,
- the first heat collector including a plurality of first heat collectin tubes that are linearly disposed and a plurality of first reflective members that are linearly disposed in a longitudinal direction of the plurality of first heat collecting tubes and configured to reflect the sunlight onto the plurality of first heat collecting tubes, the first heat collector being configured to focus light reflected from the plurality of first reflective members onto the plurality of first heat collecting tubes to heat water flowing in the plurality of first heat collecting tubes;
- and
- a second heat collector including a plurality of second heat collecting tubes that are linearly disposed in a plane, and configured to focus light reflected from at least a part of the plurality of heliostats to heat water flowing in the plurality of second heat collecting tubes,
- the operation method comprising:
- flowing water into the first heat collector through the second heat collector;
- reflecting sunlight onto the second heat collector by using at least a part of the plurality of heliostats for a predetermined period of time;
- and
- causing water to bypass the second heat collector and to flow into the first heat collector after the predetermined period of time elapses.
Dependencies are inferred from the claim text.