Solmetric Speeds design, testing Solmetric provides electronic tools and software for site evaluation, design and testing of photovoltaic (PV) systems. Shade analysis is streamlined using the SunEye 210 shade analysis tool and optional telescoping extension. The PVA-600 PV Analyzer makes quick work of performance testing and data analysis for PV arrays of any scale. solmetric.com
SMA hf-series for 2- to 3-k W Arrays
A Quality New Window Wastes Twice as Much
Energy as an Old Window with a Window Quilt®
R-value on single glazed is 4. 58
Conduction losses reduced 80%
Building losses reduced 12%
Rooms are comfortable at 5 degrees lower thermostat setting
with insulated windows. Noticeable difference -- instantly.
Convection currents and drafts eliminated
Vapor barrier fabric with full perimeter seal
Air infiltration reduced by 63%
Additional energy saved through decrease in heat and A/C load
Allows full solar gain in winter; blocks 99.5% in summer
Blocking air infiltration and solar gain can reduce cooling
load by 40%
Exceptionally cost effective technology for over 30 years.
74 September/October 2011 SOLAR TODA Y solartoday.org
Copyright © 2011 by the American Solar Energy Society Inc. All rights reserved.