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© 2004 Solar Direct |
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ProgressivTube Passive Solar Water Heaters |
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Customer Installation Letter |
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Click on the picture of the letter to view customer comments |
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John F. Kennedy Terrace
In 1982 the U.S. Department of Housing and Urban Development (HUD) began providing funds to the Virgin Islands Housing Authority to renovate these properties. The Development Coordinator of the Housing Authority realized that at 15cents/kwh for electricity solar hot water systems could dramatically reduce the Authority's monthly operating expenses. Solar water heating would also allow some residents to have hot water that had never had it before. |
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After reviewing performance data, costs, life-cycle analysis, potential maintenance problems, and actual year- long installed systems comparisons, the Development Coordinator approved the architect's decision that the most appropriate equipment was the ProgressivTube integral collector storage system, model PT-40CN. The John F. Kennedy Terrace renovation project was started in 1988. A single PT-40CN system was installed for each of the 200 apartments. The Chief Executive Officer of the Housing Authority stated that the PT-40CN systems "tremendously enhanced the Authority's financial system by reducing the energy demand of our lower income residents, thus reducing our energy allowance subsidy." After a year-long review the Development Coordinator stated in a report on the systems performance, "As a matter of fact, the product's performance far exceeds its stated requirements." The ProgressivTube solar water heaters were wind load tested in south Florida to an equivalent of 180 mph winds. This test is a strong indication of a collector's durability and was one of the deciding factors for the Housing Authority architects. The PT-40CN's durability was severely tested when Hurricane Hugo destroyed St. Croix in the fall of 1989. Hugo had sustained winds of 180 mph and gusts in excess of 230 mph. An inspection of the systems after the storm revealed that all systems were still in place and only six out of the 200 had suffered any damage. All six had broken glass because they had been hit by flying debris but were otherwise undamaged. After Hurricane Marilyn hit the Virgin Islands in 1995, another inspection was performed on the JFK systems. As with the three other housing projects on St. Croix that had ProgressivTube solar water heaters, there was no damage found. The ProgressivTube solar water heaters were the only ones found not to have suffered storm damage from Marilyn. (return to questions)
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It combined energy and water efficiency (50% better than codes) with handicapped accessibility, environmentally friendly materials, excellent indoor air quality and exciting design, all delivered through panelized housing. Because of these remarkable features, Better Homes and Gardens published a major article on the "Spirit of Today" house in its October 1994 issue. The ProgressivTube Passive Solar Water Heater, model PT-40CN, was chosen for the project because of its reputation for reliable, durable operation and cost effective performance. |
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With a wide selection of solar
water heating systems available, the Housing Authority decided that one unit should be chosen and standardized for all installations on St. Croix. In 1985, the Housing Authority's architects spent considerable
time selecting equipment. 
In 1993, the Florida Solar
Energy Center, in conjunction with Donovan Dean Architects of Orlando, Florida, designed a concept home for Better Homes and Gardens magazine. The 3,594 square foot home was constructed in the Metro
West area of Orlando. |
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