14 June 2002
Total Development Costs
b. Material Costs. Material costs for the project were as follows:
Piping, Valves, & Insulation
Pumps, Gauges & Expansion Tanks
Miscellaneous & Structural Materials
c. Labor Costs. Labor costs for the project included the services of six men for
a total of 542 hours. The total labor cost was ,334.16 (,687.88 of actual labor
cost and ,648.28 for travel).
d. Total Costs. The total cost for the 384 ft2 (36 m2) solar hot water system
was as follows:
G-6. CONSTRUCTION COMPLETION. Construction on the solar hot water system
was completed on 08 April 1996.
G-7. DATA MONITORING. The hot water system was monitored for a period of 3
months (May, June, and July) in 1997. Because of the similarity of the 3 arrays, only
the east array of the solar hot water system was monitored for performance. Data was
collected by a data logger and downloaded via a modem.
a. Solar Insolation. A pyranometer sensor was used to measure the solar
insolation. Recorded measurements from the sensor for the months of May, June, and
July can be seen in Figures G-9, G-10, and G-11.
b. Hot Water Demand. An ultrasonic flowmeter was used to measure the total
hot water flow going from the solar hot water system to Building 80306. Recorded
measurements from the flowmeter for the months of May, June, and July can be seen
in Figures G-12, G-13, and G-14.