I need ashrae standart 93-77 " method of testing to determine the thermal efficeincy of solar collector". If someone supply me, I would be grateful.
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While I was investigating a current process flow diagram of an existing plant, I didnt understand a point. The return from process steam users is 90 degrees celcius and it is approximately 80 percent of process steam, 20 percent is supplied as makeup water which is 15 degrees. These two...