Hey everybody,
I’m designing my own
hybrid pv system, but the thermal side of the story I come
across some problems
I had a question yeah I
want to understand the total model sorry for the many
questions. I was looking into component type563 to usefull
gain and it is a bit strange because it looks like you need
a minimum PV power to get some energy gain. Because below
990 kj/hr there is no usefull gain and then suddenly above
this 990 kj/hr you have 4560 kj/hr. My panel is 4 by 5 but
how can you explain this. Another thing in the summer there
is no direct sunlight on the panels because it are facades
and the sun in Hong Kong is high in the summer. According to
the model there is then also no PV power, but there is still
diffuse radiance on the panel and this will heat the panel
also up so why no PV Power.
I
decided to look also into other components so I choose the
Type50b and compared the output with type563 but they give
different outputs I assured the size of the panels is the
same but the output of 50b is much higher than of typ563 in
type50b you can choose more parameters then in type563 but I
al kept them standard. Also when I try to calculate the
efficiency it does not make sence
I
looked into the working of controller 2b with their dead
bands and looked up the working in the mathematical
reference but I checked with logged data and the controller
is not working like the formulas make you expect to do. The
controller goes for example already on even the difference
is lower than the upper band length or goes off when the
temperature difference is still bigger than 2 and this
should not be happening according to the calculations
I
hope to hear from you soon. Thanks in advance.
Best
regards,
Benjamin
Stobbe