tekmar’s Setpoint Difference Control 157 uses variable-speed pump operations to get more heat from a solar thermal system, even on less-than-ideal days.

Residential solar combisystems provide domestic water heating and some percentage of space heating. Although less known than domestic hot water-only systems, combisystems can be practical and efficient if properly sized and designed.

This year appears on track for a significant mix of industrial construction projects, according to Industrial Info Re-sources, an informational news source that tracks the progress of major construction on a daily basis.

The World Bank announced March 6 a major international effort to expand renewable power generation in developing countries by tapping an underutilized resource: geothermal energy

California regulators have expanded the state’s California Solar Initiative Thermal Program in an effort to provide enhanced incentives for solar heating and cooling technologies

On Feb. 19, the Solar Energy Industries Association launched the U.S. Solar Heating and Cooling Alliance

GeoStar introduces the Sycamore Series geothermal comfort system, which combines a variable-capacity com-pressor with a variable-speed blower motor and a variable-speed loop pump to provide energy-efficient comfort while protecting the environment.

Wilo USA’s Stratos GIGA is a high-efficiency inline circulator with electronically commutated motor technol-ogy designed for use in water heating and air-conditioning systems, closed cooling circuits, and industrial cir-culation systems, as well as solar and geothermal applications.

Published in affiliation with the Radiant Professionals Alliance, the 2013 Radiant Flooring Guide is an indispensable tool for anyone interested in the comfort and energy efficiency of radiant heating.