Wide Range of New Products Saves Energy and Improves Comfort
January 6, 2014
Encompassing a broad cross-section of the HVACR marketplace, the winners of this year’s AHR Expo Innovation awards feature everything from a hybrid electric heat pump water heater to a high-performance metric motor. The winning entries were selected in 10 categories.
The last time the Air-Conditioning, Heating, and Refrigeration (AHR) Expo took place here in 2008, it established a then all-time attendance record of more than 39,000 visitors with over 6,400 buyers coming from 138 countries. Show management is optimistic that the attendance record could be broken again this year.
With almost 600 skyscrapers providing a dramatic backdrop, it seems appropriate that ASHRAE’s 2014 Winter Conference will focus on the design, development, and operation of tall buildings.
Are we using the most accurate metrics for determining duct leakage in a residential duct system? Would this be the best metric to use for quantifying duct leakage in residential duct systems?
When refrigeration systems are exposed to low-ambient conditions, the condensing pressure (head pressure) will fall. If the head pressure gets too low, the metering device will not have enough pressure drop across it to operate properly.