EuroSun2008-5

Efficiency test results

The collector was tested according to both steady state test (EN 12975-2;section 6.1) and dynamic test (EN 12975-2; section 6.3) methods. The corresponding characteristic parameters are presented in Table 1.

Table 1. Efficiency curve parameters after steady-state test results

Steady-state test parameters

Dynamic test parameters

По

ai

[W/°C. m2]

a2

[W/°C2.m2]

П)ь

Ci

[W/°C. m2]

C2

[W/°C2.m2]

C5

[J/kg°C]

Kd(0)

0.725

3.599

0.007

0.794

3.483

0.010

13647

0.725

Incidence angle modifier (IAM) values obtained, after both test methodologies, for longitudinal and transversal incidences are presented in Table 2.

Table 2. Steady-state and dynamic test results for transversal and longitudinal incidence angle modifier values

Test

0

10

15

20

25

30

35

40

50

60

Steady

Kt(0)

0.990

0.999

0.949

0.887

0.632

0.494

0.481

0.482

--

Ki(0)

--

--

--

--

--

--

0.957

--

0.853

Dynamic

Kt(0)

0.966

0.992

0.931

0.840

0.529

0.362

0.328

0.057

--

Ki(0)

--

--

--

--

--

--

0.991

--

0.781

Longitudinal and transversal IAM functions were constructed after 2-points based and linear approximations, respectively (Carvalho et al, 2007). The composed IAM, illustrated in figure 2, follows the McIntire (1983) approximation:

K(9) = K(9l,9t )* K(9l,0)K(0,9t) (8)

The weighted average hemispherical IAM, calculated according to Eq.(7), yields Kdfh =0.529.

EuroSun2008-5

Automatic Control System

The whole automation system is mainly divided into two parts: one part is the hardware equipments consisted of all kinds of devices used in the testing system; the other part …

The application of the regulations minimal solar collector area

Following the new regulations, a three bedrooms autonomous zone must have a minimal collector area of 4 m2 independently of the climate zone were is located. From the simulations results …

Measured sequences used for validation purposes

The comparison of experimental and calculated instantaneous power results, obtained after the different approaches presented in the previous section, is based on instantaneous efficiency measurements for a CPC collector (C …

Как с нами связаться:

Украина:
г.Александрия
тел./факс +38 05235  77193 Бухгалтерия
+38 050 512 11 94 — гл. инженер-менеджер (продажи всего оборудования)

+38 050 457 13 30 — Рашид - продажи новинок
e-mail: msd@msd.com.ua
Схема проезда к производственному офису:
Схема проезда к МСД

Партнеры МСД

Контакты для заказов шлакоблочного оборудования:

+38 096 992 9559 Инна (вайбер, вацап, телеграм)
Эл. почта: inna@msd.com.ua