Some applications utilize
an input or supply voltage of 277-1-60. While some components are
available for direct application of 277-1-60 power, most manufacturers find that the use of a buck-boost transformer to
lower the voltage is more cost effective.
many school administrators about the air quality inside their buildings, and
the frank answer is liable to be “Well, we don’t know.”
They should. School
air quality and student performance go together as naturally as breathing in
and breathing out.
Building automation systems (BAS) have made
great strides toward embracing connectivity and
interoperability standards. This has given building owners more
freedom to choose among manufacturers for products and service support.
Even greater benefits await an organization whose BAS is merged with information technology.
This article explains the Occupational Safety and Health Administration (OSHA) standard for control of hazardous energy sources, why this is important, and what employers must do to protect their employees.
Some utility companies and public agencies have rebate programs in place to encourage customers to upgrade their existing standard-efficiency motors to NEMA Premium™ efficiency motors. Yet, to accurately estimate energy savings and determine annual dollar savings requires knowing the efficiency of the existing motor.
Many customers want high-efficiency products; others should consider it. And why not? Energy efficiency makes economic sense. Regularly tied to reducing emissions or green building, you don’t have to believe in global warming or going green to be an energy efficiency advocate. Energy efficiency saves money, keeping more dollars in the pockets of your customers.
Hot gas bypass is recommended when
the load on an evaporator varies and operation of the air conditioning system
is desired at lower than design conditions. This article covers standard
(external) hot gas bypass.
This article outlines the considerations involved to properly select, apply, and control fans. Emphasis is placed upon matching the fan equipment to the requirements of the system from several different perspectives.
This article examines the use of air handling units for health care applications. Health care applications place special demands on air handling equipment. The article investigates a way to reduce air handler operating costs.