Question

How many pounds of coal have the same heating value as 19 gal of gasoline? What is the smallest capacity air-conditioner that is sufficient to maintain the temperature of a small hut at 72 F when the outside temperature is 93 F. Assume the hut is 10 ft x 10 ft x 6 ft and the 5 exterior surfaces are made of 1 inch softwood. Give your answer in BTU/hr. A wall is made up of four elements, as follows: inch wood siding (lapped) inch plywood sheeting inch fiberglass inch sheetrock Using the R-values of Table 6.2 of the textbook, how many BTU per hour per square foot will be lost through the wall when the outside temperature is 44 F colder than the inside?

          How many pounds of coal have the same heating value as 19 gal of gasoline? What is the smallest capacity air-conditioner that is sufficient to maintain the temperature of a small hut at 72 F when the outside temperature is 93 F. Assume the hut is 10 ft x 10 ft x 6 ft and the 5 exterior surfaces are made of 1 inch softwood. Give your answer in BTU/hr. A wall is made up of four elements, as follows:   inch wood siding (lapped)  inch plywood sheeting  inch fiberglass  inch sheetrock Using the R-values of Table 6.2 of the textbook, how many BTU per hour per square foot will be lost through the wall when the outside temperature is 44 F colder than the inside?

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