While many contractors are still hesitant to try refrigerant sealants, Brothers Air, Heat & Plumbing trained its service techs not only in proper application, but also how to market sealants to customers with leaking equipment. When the recession hit hard, Brothers policy of using sealants positioned them to not only retain customers, but add to profitability.
The Frito-Lay plant in Killingly, Conn., has installed a combined heat and power (CHP) system designed to help remove it from the Northeast power grid. Located in a region with severe electrical transmission constraints, Frito-Lay saw CHP as a potential opportunity for achieving near-term energy efficiency improvements and reducing emissions.
The U.S. Department of Energy (DOE) notes that industrial buildings employ energy-intensive systems to heat, ventilate, air condition, light, and otherwise support processes and personnel. These industrial facilities present a unique opportunity to save energy by recovering energy and/or water from industrial processes.
The convenience of rooftop packaged units has driven a demand for increasingly larger units. With these larger units, many factors need to be considered in the design of the building, such as increased structural support. Unfortunately, the increased sound levels produced by these units are sometimes overlooked.
Barix AG, a supplier of IP-based control and
monitoring solutions, is providing Lake and Peninsula School District in
southwest Alaska with its Barix Barionet IP control and automation devices to
remotely monitor the HVAC, electrical, and other critical building systems at
14 schools across a remote, 400-square-mile section of the state.
Where should you look for the best examples of large-scale, energy-efficient green building today? Not the United States. Instead the greenest new buildings on the planet are located in Europe. “The Europeans are now the leaders,” stated American green building consultant Jerry Yudelson.
Imagine a lightweight, flexible material that effectively insulates pipes in steam distribution systems. You don’t have to imagine anymore. With DOE assistance, Aspen Aerogels developed insulation that provides the same insulating capabilities as conventional products, but with up to five times less material.
Space heating and lighting consume most of the energy in non-refrigerated warehouses. Installing more efficient lighting to save energy has been well documented by computer modeling. But what about space heating? This article summarizes an energy modeling analysis showing energy performance for six types of gas-fired heating systems commonly used in warehouses.
Voltage unbalance degrades performance and shortens the life of a three-phase motor. It causes phase current unbalance far out of proportion to the voltage unbalance. Unbalanced currents lead to torque pulsations, increased vibrations and mechanical stresses, increased losses, and motor overheating, which results in a shorter winding insulation life.
To find out readers’ opinions about where solar products stand in today’s market, a brief, informal online survey was conducted on The NEWS Website. Survey respondents in this case do feel solar is taking hold in the residential sector.