Tag: heat pump

A heat pump is a device that provides heat energy from a source of heat to a destination called a “heat sink”. Heat pumps are designed to move thermal energy opposite to the direction of spontaneous heat flow by absorbing heat from a cold space and releasing it to a warmer one. A heat pump uses some amount of external power to accomplish the work of transferring energy from the heat source to the heat sink.

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BES-TECH
The Digi-RTU modulates the capacity of rooftop units and air/water source heat pumps to match the dynamic nature of building cooling or heating loads. As a result, energy waste is minimized and indoor comfort is improved. Because of its unique operating principles, the Digi-RTU achieves greater savings than any other

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SCHNEIDER ELECTRIC
Conext XW+ is an adaptable single-phase and three-phase hybrid inverter with grid-tie functionality and dual AC power inputs. Available solar charge controllers, monitoring, and automated generator control modules enable further adaptability. From a single Conext XW+ unit, to clusters up to 102 kW, the Conext XW+ is a scalable

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SENS
Designed for mission-critical genset, marine, and standby applications, MicroGenius 2 battery charger pack offers advanced charging technology in a small, rugged, and rainproof package. Dynamic Boost, a SENS patented technology, charges batteries perfectly each recharge cycle, dynamically adapting to current system and battery conditions. HELIX, another MicroGenius 2 innovation, substantially extends the life

A Net Zero Energy Retail Store in Chicago: A Walgreens Project Profile

A Net Zero Energy Retail Store in Chicago: A Walgreens Project Profile

An older Walgreens store in Evansville, IL, had been selected for replacement in 2012 when executives suddenly recognized that it would be the ideal location for the net zero project they’d been contemplating. Located just 15 miles from corporate headquarters, the outdated store offered ease of access for engineers and

HVAC Payback

HVAC Payback

If owners of commercial office buildings can incorporate variable-frequency drives (VFDs) into their HVAC systems, more often than not they probably should, says Pete Miceli, vice president, regional engineering manager for real estate service, development, and investment management at Transwestern’s Midwest office. Recently, Transwestern installed VFDs for supply and return

Renewable Energy for Onsite Power Generation

Renewable Energy for Onsite Power Generation

Although every situation is unique, and it’s difficult to generalize, Barry Worthington, executive director of the US Energy Association (USEA) in Washington, DC, says progress in renewable energy over the last 10 years has been phenomenal as systems become more efficient. Nevertheless, use of renewable energy for onsite power generation

Making Power Multitask With CHP/CCHP

Making Power Multitask With CHP/CCHP

Cogeneration, or combined heat and power (CHP), uses a heat engine or power station to generate electricity and heat for onsite uses. Trigeneration, or combined cooling, heat, and power (CCHP), is the simultaneous generation of electricity and useful heating and cooling as a result of the combustion of fuel or

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