ARLINGTON, VA — The Air-Conditioning and Refrigeration Technology Institute (ARTI) has selected two new research projects for its “Hvacr Research for the 21st Century” (21-CR) program.

The projects open for bid are “Measurement of Performance of CO2 Compressors” and “CO2 Compressor-Expander Analysis”; both have a budget of $120,000. Information on the bidding process can be downloaded from ARTI’s website at

Publication date: 01/15/2001