Category Central solar heating plants with seasonal

TITLE: SODERTUNA ALTERNATIVECMULTIPLE WELL SYSTEM PERIOD: 1982

MAIN SUBJECTS OF RESEARCH:

– storage material: YES/ftf$

– storage system : YES/fNffl

– total system : YES/fNtS

1. Material :

2. Density :

granite

2700

kg/m3

3. Specific heat :

800

J/kg К

4. Mean heat capacity

2.1

MJ/m3 к {

5. Thermal conductivity :

3 – 3.5

W/m К

6. Permeability :

2

m

7. Operating temperature interval:

10 – 70

"C

8. Price :

100 SEK

UA/m3

Properties at temperature :

20

eC

1051000

COST (incl – cost for labour)

DATA OF TOTAL SYSTEM

The number of heat consumers in the entire system: 525 dwellings 1. Heat consumption system: space heftting/domestic hot water/both

space heat load*

: 30 10

MJ

hot water load*

: 20 103

MJ

total load*

: 50 103

MJ

total systaai load*

3

* 45 ...

Read More

SEASONAL SOLAR COUPLED GROUND STORAGE CCR – ISPRA MAIN SUBJECTS OF RESEARCH

– storage material:

– storage system :

– total system :

YES/m

YES/^

YES/^x

theoretical/exper imental theoretical/experimental theoretical/experimental

1. Material

Clay soil

3

2. Density

: 1.2-1.0 * 10 3

kg/m

3. Specific heat

: 1.2-2.9 -103

J/kg К

4. Mean heat capacity

: 1.4-4.3

3

MJ/m К ( x water)

5. Thermal conductivity

: 0.6-1.5

W/m К

6. Permeability

2

m

7. Operating temperature

interval: 5 – 60

°С

8. Price

UA/m^

Properties at temperature

°С

STORAGE CONTAINER AND COMPONENT PERFORMANCE

COST (incl. cost for labour)

DATA OF TOTAL SYSTEM [21] [22]

CONTACT [23] [24]

О

5.6.1. Multiple well system at Lulea (Sweden)

5.6.2. SUNSTORE project, Stora Kuggan (Sweden)

Sodertuna – Alternative C: Multiple we...

Read More

L. ENGVALL Viak AB Box 519

S – 162 15 VALLINGBY

1. Storage volume : 60*000 m"

shape : 110 x 55 x 10 m

position: ground level

2. Total heat capacity : 90*000

3. Containment present material

4. Insulation present position insulation material

total volme insulation material:

5. Beat exchanger present :

heat exchange rate (theor./gaiflWWO: 156*000 6* Annual performance (theor*/j£jfcjftX): 135 %

DATA OF TOTAL SYSTEM

X

Ed

H

tn

>*

ЕЛ

3

H

о

H

* per heat consumer per year*

Heat Capacity
(MJ/miK)

Conductivity

(W/mK)

crave l v – v; /у

. вЛ9*\

Figure 49: Kranebitten/Soi1 storage schematic (vertical cross section)

/72/

CONTACT

G. SPIELMANN & A. SIGMUND Austrian Institute for Building Research An den langen Liissen 1/6 A – 1190 WIEN

TITLE:

Read More

Earth storage

5.5.1. The Groningen project (the Netherlands)

5.5.2. The Vaulruz project (Switzerland)

5.5.3. SUNCLAY – Project at Kungsbacka (Sweden)

5.5.4. Heat piles for foundation and heat storage,

Huddinge (Sweden)

5.5.5. Energy storage in clay, Upplands Vasby (Sweden)

5.5.6. A1ternativenergieprojekt, Innsbruck-Kranebitten (Austria) Seasonal solar coupled ground storage, CCR – Ispra (EC)

Three phases are given, phases a) and b) show che lowering or the tune by means of a vibrating lance, whiLo phase c) shows the final stage. It should t>e noted that on removal of the lance the hole created by the lance closes leaving the tube completely surrounded by the soil.

Figure 44: Groningen/The heat storage system

SCHEME OF ГНЕ SEASONAL HEAT STORAGE RESERVOIR WITH A CENlRAL SHORT TERM ST0RAGE RESERVOIR CC...

Read More

SEASONAL HEAT STORAGE

TITLE: SCARBOROUGH G. O.C. B.

Hot/Cold aquifer thermal energy storage

§

и

ей

M

cя и Pi

З

1—I

а

и

1

м

о

1 о н ся

STORAGE CONTAINER AND COMPONENT

PERFORMANCE

COST (incl. cost for labour)

1. Storage volume for one doublet

: 530’000

3

m

Storage $ 200’000

UA

distances between wells

: 130 m and 65 m

CDN$ 1983 (2 cold wells

60 m

position: ШЙШІ/Ьеlow/p*WttaiyiМВёЗШ ground level

deep)

$ 201000 (2 hot wells 40 m deep

X

Ы

2. Total heat capacity

MJ/K

H

CO

3. Containment present

: aquitard clay

YES/WO

Containment

UA

ЕЯ

w

material

: 1.71 W/mK

о

2

4* Insulation present

; 10 m thickness

YES/NO

Insulation no cost

UA

о

н

сл

position insulation

: above and below

aquife...

Read More

DATA OF TOTAL SYSTEM

REFERENCES:

/33, 34, 35/

CONTACT:

Dr. G. SAUGY

Institut d’economie et amenagement energetiques Swiss Federal Institute of Technology EPFL-Ecublens CH – 1015 LAUSANNE

Prof. A. BURGER

Centre of Hydrogeology of the University of Neuchatel 11, rue E. Argand CH – 2000 NEUCHATEL 7-

St Paul/Block diagram of the ATES site,

REFERENCE: /63/

CONTACT:

J. R. RAYMOND

Underground Energy Storage Program Battelle

Pacific Northwest Laboratory P.0. Box 999

RICHLAND, Washington 99352 USA

– l L’i ~

Read More

Collector Models for TRNSYS

TRNSYS is a quasi-steady system-simulation code that calculates energy flow and fluid state points for steady flow in an arbitrary set of components (such as collectors, pumps, valves, tanks, etc.) in response to slowly varying boundary conditions (solar insolation and ambient temperature). The time interval is arbitrary, but it should generally be large compared to the time constants of the components in order to justify the quasi-steady assumption; because insolation data are frequently presented on an hourly basis, TRNSYS is frequently used with one-hour time steps. The authors of TRNSYS (University of Wisconsin) have built a great deal of modeling flexibility into the code. There are some 30 subroutines available to model components...

Read More

INFORMATION ON MODELS

7.1 Collector-Subsystem Models for MINSUN

A primary objective of the work of Subtask 1(b) was to provide reliable performance and cost models for use in system-optimization studies using the MINSUN system-optimization code developed by Subtask 1(a) for the Task VII studies. Tables 2.4-2.6 and 2.8 constitute the basis for the performance models developed for use with MINSUN; however, the nature of the calculational procedures employed by MINSUN makes an additional step necessary for implementation. MINSUN works with relatively large time steps (usually a day or a week); therefore, this code does not keep track of the time of day or the sun angles during its integration cycle...

Read More