Comments on: Hometown, Alaska: Architecture of our new major buildings http://kska.org/2009/10/28/hometown-alaska-architecture-of-our-new-major-buildings/ Anchorage, Alaska - FM 91.1 Tue, 16 Mar 2010 18:29:57 -0800 http://wordpress.org/?v=2.9.1 hourly 1 By: Dennis Sirianni http://kska.org/2009/10/28/hometown-alaska-architecture-of-our-new-major-buildings/#comment-21931 Dennis Sirianni Thu, 29 Oct 2009 16:56:26 +0000 http://kska.org/?p=7436#comment-21931 on the discussion "Architecture of our new major buildings" aired Oct 28th, one caller thought that the south side of the Din'a Center could be fitted with solar tubes to heat the center. Altough the idea seems wonderfull in reallity in Alaska it would not be possible to get enough energy from a solar vacuum tube array or flat plate collectors to even but a dent in the winter fuel bill. During the winter months the solar fraction available, sun light, is very small (nov, Dec. Jan, Feb)less than 20%. However this is not to say that a hydronic solar array, south facing, is not feasible for domestic hot water (DWH) production if the array is set on the roof. On an annualized basis a soslar system can produce in excess of 50% of one DHW needs. There are systems in place in Anchorage today dooing just that. There is a Viessmann 300T 30 tube array atop Susitna Engegy's building in Mid Town doing just that. Andy Baker, PE has two or three systems operating as well. Sized and designed properly these systems help reduce the carbon footprint and reduce fuel costs. In addition currently there are Federal tax credits that will cover up to 30% of the installed cost with no cap. Qualifying high effiecient boiler, water heaters and furnaces on the other hand have a $1,500.00 tax credit cap. Dennis Sirianni Roth-Sirianni, LLC Mfg Rep for Viessmann Solar and heating products www.viessmann.us PS: Why would we want to destroy the wonderfull views affored from the upper levels of the Din'a Center? on the discussion “Architecture of our new major buildings” aired Oct 28th, one caller thought that the south side of the Din’a Center could be fitted with solar tubes to heat the center. Altough the idea seems wonderfull in reallity in Alaska it would not be possible to get enough energy from a solar vacuum tube array or flat plate collectors to even but a dent in the winter fuel bill. During the winter months the solar fraction available, sun light, is very small (nov, Dec. Jan, Feb)less than 20%. However this is not to say that a hydronic solar array, south facing, is not feasible for domestic hot water (DWH) production if the array is set on the roof. On an annualized basis a soslar system can produce in excess of 50% of one DHW needs. There are systems in place in Anchorage today dooing just that. There is a Viessmann 300T 30 tube array atop Susitna Engegy’s building in Mid Town doing just that. Andy Baker, PE has two or three systems operating as well. Sized and designed properly these systems help reduce the carbon footprint and reduce fuel costs. In addition currently there are Federal tax credits that will cover up to 30% of the installed cost with no cap. Qualifying high effiecient boiler, water heaters and furnaces on the other hand have a $1,500.00 tax credit cap.

Dennis Sirianni
Roth-Sirianni, LLC
Mfg Rep for Viessmann Solar and heating products
http://www.viessmann.us

PS: Why would we want to destroy the wonderfull views affored from the upper levels of the Din’a Center?

]]>