Как выбрать гостиницу для кошек
14 декабря, 2021
Equation (2) allows evaluating the total solar energy on the collector scope.
n
G = ^ Idt (2)
.=1
1.1.2 The actual useful energy
Equation (3) allows calculating the actual useful energy extracted to the solar energy.
Q = mCfAT = mcf ((out — T. n ) (3)
1.1.3 The instantaneous efficiency
Equation (4) allows calculating the instantaneous efficiency defined as the ratio of the actual useful energy extracted to the solar energy intercepted by the collector.
Q
AgG
1.1.4 Reduced temperature difference
When the temperature at the collector inlet is employed, the reduced temperature difference is calculated as:
1.1.5 Graphical presentation of instantaneous efficiency
Graphical presentation shall be made by statistical curve fitting, using the least squares method, to obtain an instantaneous efficiency curve of the form
П = П — a1T* — a2G(T*)
or
П = П — UT