Source: Air-Conditioning, Heating, and Refrigeration Institute (AHRI). Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.

The amount of condenser subcooling needed is system dependent. The more pressure drops — friction and static — associated with the lines and accessories that carry the liquid in the system, the more need there will be for liquid subcooling to prevent liquid line flash gas.

Homeowners are being very careful about making investments in home energy savings. According to a recent survey, they are demanding significant energy cost savings to justify any investments of time and money required to install highly efficient HVAC systems, and they have grown more skeptical about promises of a quick payback.

Purdue University will host three concurrent conferences with HVACR emphasis July 16-19. The concurrent conferences are the 21st International Compressor Engineering Conference, the 14th International Refrigeration and Air-Conditioning Conference, and the 2nd International High Performance Buildings Conference.

Because the tax credit on high-efficiency equipment expired, many believe that homeowners will now revert to standard efficiency. Before we throw the high-efficiency equipment out with the bath water, let’s take a close look at how the tax credits affected sales and how they can be replaced in 2012.

Source: Air-Conditioning, Heating, and Refrigeration Institute (AHRI). Industry figures are estimates that are derived from the best available figures supplied by a sample of AHRI member companies.

Condenser subcooling ensures that there is a liquid seal at the condenser’s bottom so the liquid line or receiver will not be fed with vapors. This condition prevents any noncondensables, like refrigerant vapor or air, from leaving the condenser’s bottom and entering the receiver or liquid line.

Demand in the United States for HVAC equipment is projected to increase 5.1 percent annually to $16.8 billion in 2015, according to a study that came out in November titled HVAC Equipment from The Freedonia Group Inc., a Cleveland-based industry market research firm.

The Flow T1 adapter is a preventive solution to the clogged air conditioning drain line. The adapter is placed in the main drain line of any HVAC air-handler system to prevent the main drain line from becoming clogged.

The NEWS reports on new products found by our editors at the recent AHR Expo in Chicago. Products are listed in alphabetical order within each category.