CN103062945A

CN103062945A - Solar receiver tube assembly and use thereof

Info

Publication number: CN103062945A
Application number: CN2012104032869A
Authority: CN
Inventors: H.阿兰; E.利普曼
Original assignee: Siemens AG; Siemens Concentrated Solar Power Ltd
Current assignee: Siemens AG; Siemens Concentrated Solar Power Ltd
Priority date: 2011-10-21
Filing date: 2012-10-22
Publication date: 2013-04-24
Also published as: JP2014531012A; AU2012325054A1; IL231897A0; AU2012325054B2; CN203310150U; EP2745059A1; CL2014000966A1; WO2013057043A1; BR112014009105A2; US20140360489A1; ZA201402168B

Abstract

The invention relates to a solar receiver tube assembly and use thereof. The solar receiver tube assembly is provided with at least one first solar receiver tube with a first selective absorptive coating; at least one second solar receiver tube with a second selective absorptive coating, wherein values of at least one optical characteristic of the first selective coating and the second selective coating differs from each other while an operating the solar receiver tube assembly. The optical characteristics are preferably alpha and epsilon. The receiver tube and efficiency of the receiver tube are improved.

Description

The usage of solar receiver pipe assembly and reception organ pipe assembly

Technical field

The present invention relates to the usage of solar receiver pipe assembly (solar receiver tube assembly) and reception organ pipe assembly.

Background technology

Solar energy field (solar field) comprises having the loop (loop) that receives organ pipe, and this receiver pipe is used for absorbing solar energy and the energy that absorbs is delivered to heat transfer fluid, and this heat transfer fluid is arranged in and receives organ pipe.Loop or be solar receiver pipe assembly more than a loop.

Receive organ pipe and comprise coating for selective absorption.This selective coating set point (set point) is trading off between absorption maximum and minimized radiation.The character of this selective coating is to enlarge percent absorption (being indicated by α) will increase radiation (being indicated by ε).Absorb and operating temperature irrelevant (indifferent) although also have in the character of this selective coating, when temperature was higher, radiance was higher.Under the state of prior art, all receivers have identical design together with the loop.

Summary of the invention

The object of the invention is to, a kind of solar receiver pipe assembly of the best is provided.

Another object of the present invention is to the usage of solar receiver pipe assembly.

Realize these purposes by the present invention who stipulates in the claims.

Solar receiver pipe assembly is equipped with: at least one first solar receiver pipe, and it has the first coating for selective absorption; At least one second solar receiver pipe, it has the second coating for selective absorption, and wherein when operation solar receiver pipe assembly, the value of at least one optical characteristics of the first selective coating and the second selective coating differs from one another.Optical characteristics is preferably α and ε.This idea is to receive organ pipe together with the efficient of receiver assembly with improving.

Advantage be low by temperature especially therein and absorb and suppress between threshold value can move to higher wavelength and obtain more that the location of multi-energy obtains more multi-energy from loop and solar energy field generally.When at the HTF(of higher temperature for example fused salt or DSG) in when carrying out work, this will become more effective.

In a preferred embodiment, the first reception organ pipe and the second reception organ pipe are the parts in the single loop of solar receiver pipe assembly.At this moment, in the loop, use different solar receiver pipes.Replacedly, use the reception organ pipe of the identical type with identical coating for selective absorption, yet when the operation whole system, the value of optical characteristics is different.

About different embodiment, first receive organ pipe be the parts and second in the first loop of solar receiver pipe assembly to receive organ pipe be the parts of the second servo loop of solar receiver pipe assembly, and the first loop and second servo loop differ from one another.There are at least two loops.

At last, at power plant (power plant) the use solar receiver pipe assembly that is used for solar energy is converted to electric flux.

Description of drawings

To the description of exemplary embodiment, other features and advantages of the present invention are proposed according to reference to the accompanying drawings.Accompanying drawing is schematic.

Fig. 1 and Fig. 2 illustrate the partial view of different solar receiver pipe assemblies.

The specific embodiment

Example 1:

Along a single loop 100 of solar receiver pipe assembly 1, the solar receiver pipe more than a type that will have different set point is installed in (Fig. 1) on the diverse location.There are at least one the first solar receiver pipe 101 with first coating for selective absorption and at least one the second solar receiver pipe 102 with second coating for selective absorption.

When operation solar receiver pipe assembly, the value of at least one optical characteristics of the first selective coating and the second selective coating differs from one another.May have higher α and higher ε for lower temperature with the set point that begins the to be associated loop, and will design the receiver that is associated with end and the higher temperature in loop with lower ε and lower α.

Example 2:

Has

different circuit

200 and 300 for different temperatures about the possibility of result of example 1.For example, this proposes for live (open) steam produces (DSG).In this case, different loops is equipped with different solar receiver pipes.

In view of the present invention, there are at least two possibilities of the different value that obtains optical characteristics:

– uses the solar receiver pipe with different solar energy absorbing coatings.

– uses the development of the specific coatings of heat-sensitive layer, and this specific coatings changes its optical characteristics according to its temperature.In this case, whole loop or whole field will be equipped with identical reception organ pipe, but the optical property of selective coating (behaviour) will be received the temperature effect of organ pipe.

Claims

1. a solar receiver pipe assembly (1) has:

At least one first solar receiver pipe (101) of –, it has the first coating for selective absorption;

At least one second solar receiver pipe (102) of –, it has the second coating for selective absorption, wherein

– is when operation solar receiver pipe assembly (1), and the value of at least one optical characteristics of the first selective coating and the second selective coating differs from one another.

2. according to claim 1 solar receiver pipe assembly wherein first receives organ pipe and second to receive organ pipe is the parts in the single loop (100) of solar receiver pipe assembly (1).

3. according to claim 1 solar receiver pipe assembly, wherein first receive organ pipe be the parts and second in first loop (200) of solar receiver pipe assembly (1) to receive organ pipe be the parts of the second servo loop of solar receiver pipe assembly (1), and the first loop (200) and second servo loop (300) differ from one another.

One kind the power plant that is used for solar energy is converted to electric flux according to claim 1 to 3 in the usage of one solar receiver pipe assembly (1).