Дата публикации: 2017-11-14 19:27
At an ambient air temperature of 79 Deg. C., my initial thoughts are that the panel temperature doesn't drop as quickly as might be expected. I was applying water at 77 deg C. (from an underground source = constant temperature) to panels that are only 88 at midday today. After a minute or two (not timed!) the panel temp was down to 85 deg. and then fell to a low of 77 deg. as evaporation kicked in, only to rise to 87 deg. in a matter of several minutes.
not really, in an ideal world you'd only run it when the cells pass 95 or 95 degrees, and have it shut down when they drop below 85 or something, again in a perfect world you'd run it off rainwater, so not exactly wasting good down water
I, too, have noticed a significant reduction in output on hot days so I'm keen to try this (if my wife will allow me on the roof again).
The outside temperature is 85 deg C, the roof (dark tile) is 67 deg C. I forgot to measure the panel temp before I started but after watering it for a while, the panel temps dropped to 77 deg C.
If I have a self-enclosed layer (a few inches thick) of water *set off above* a panel, with water cycling to a cooling resevoir, can I not achieve a similar cooling effect?
Areas where fish is landed or handled and all surfaces which come in contact with fish during unloading, handling, holding and transportation shall be maintained in a clean and sanitary condition.
b) The set-point is determined by deducting 5 grams for each 655 grams of fill weight (calculated to the nearest whole gram).
The Process Flow Diagram must outline all of the production steps and assists in identifying those steps that are important in processing a safe fish product meeting all regulatory requirements.
Introduction to materials and their classification, Atomic bonding and Crystal Structures, Imperfections and strengthening mechanisms, Diffusion – steady and nonsteady state, Corrosion and degradation of materials, Properties and applications: Mechanical, Thermal, Electrical, Magnetic, Electronic, Biological, Chemical. These topics will be interspersed with several case studies and in-class experiments/demonstrations.