What’s the Difference between AC, DC, and EC Motors? Machine Design, August 24, 2017 For motor applications, engineers have several options at their disposal. Typically, engineers can choose between direct-current (DC) or alternating-current (AC) motors. Machine Design has covered the difference between basic types of motors in the past. For motor applications, engineers have several options at their disposal. … Read more
Making data centers more energy efficient MIT News, August 30, 2017 Most modern websites store data in databases, and since database queries are relatively slow, most sites also maintain so-called cache servers, which list the results of common queries for faster access. A data center for a major web service such as Google or Facebook … Read more
Carestream Manufacturing Plant Reduces Energy Consumption by 21% in 5 Years Energy Manager Today, August 2, 2017 Carestream, a provider of dental and medical imaging systems and IT solutions, has reduced energy consumption by 21% during the past five years at its Windsor, Colorado, manufacturing plant. In the past two years alone, Carestream Colorado has … Read more
3 Quick Tips for Energy-Efficient Motion Control Machine Design, August 21, 2017 With energy-efficiency standards becoming stricter, manufacturers aim to be more environmentally friendly by reducing carbon emissions across the factory work space but also do not want to sacrifice efficiency and performance to do so. Manufacturers are introducing more automated systems to the factory … Read more
Aldi converts UK stores to CO2 refrigerants Gas World, August 16, 2017 By the end of 2018, up to 100 of Aldi’s stores are set to be converted at a cost of around £20m. The move will see a reduction in Aldi’s potential refrigerant gas carbon emissions by 99%, with an annual average decrease of … Read more
Agricultural energy efficiency tour: Replacing inefficient irrigation systems Michigan State University Extension, August 9, 2017 After conducting a Michigan Farm Energy Audit, Grand Valley Farm, the host site for the Aug. 17 agricultural energy efficiency tour, found it could cut energy expenses by more than 50 percent by replacing two traveling guns with a more energy efficient … Read more
Woolworths’ first transcritical CO2 store r744.com, July 23, 2017 On 16 May retail giant Woolworths opened its first transcritical CO2 store, in Colebee, New South Wales. Designed for ambient temperatures of up to 45°C, fitting the robust system has helped to train local HVAC&R talent along the way, laying the foundations for future growth of natural refrigerant-based … Read more
Almost 100 per cent energy efficiency with synchronous motor Process & Control Engineering, July 9, 2017 Tests carried out on a 44 megawatt 6-pole synchronous ABB motor shortly before delivery showed an efficiency 0.25 percent greater than the 98.8 percent stipulated in the contract, resulting in the world record for electric motor efficiency. This efficiency improvement … Read more
Solar thermal system part of Michigan agriculture energy efficiency tour Michigan State University Extension, July 24, 2017 Heating water for sanitary use in the milking parlor can be a significant energy expense on a dairy farm. One energy reduction option dairies can choose is to use solar thermal water heating panels to preheat water before … Read more
CO2-ammonia ice rink installed in Sweden Ammonia21, June 29, 2017 The T3 Center – an ice hockey arena that hosts Swedish 2nd division team Björklöven in Umeå, northern Sweden – has retrofitted its ammonia refrigeration system with a CO2-ammonium hydroxide system. The existing ammonia system was retrofitted with “ammonium hydroxide [as the secondary refrigerant, which] … Read more