Please give this announcement wide and prompt distribution to all interested researchers within your organization.

• 1683-TRP_ReBid  - Experimental Evaluation of Two-Phase Pressure Drop and Flow Pattern in U-Bends with Ammonia; Responsible Committee: TC 1.3 (Heat Transfer and Application); Co-Sponsors: TC 8.4 (Air-to-Refrigerant Heat Transfer Equipment)

• 1780-TRP-ReBid - Test Method to Evaluate Cross-Contamination of Gaseous Contaminant within Total energy Recovery Wheels; Responsible Committee: TC 9.10 (Laboratory Systems); Co-Sponsors: TC 2.3 (Gaseous Air Contaminants and Gas Contaminant Removal Equipment; TC 9.6 (Healthcare Facilities); SSPC 62.1 (Ventilation for Acceptable Indoor Air Quality) 

• 1799-TRP - Validation of Extrapolation if Performance Rating Test Results for Small Energy Recovery; Responsible Committee: TC 5.5 (Air-to-Air Energy Recovery)

• 1817-TRP - Long-term Temperature Change of Ground Heat Exchangers; Responsible Committee: TC 6.8 (Geothermal Heat Pump and Energy Recovery Applications)

• 1824-TRP - Accounting for the Barometric Pressure Impacts on Psychrometric Performance Testing of Unitary Air-Conditioning and Heat Pump Equipment; Responsible Committee: TC 8.11 (Unitary and Room Air Conditioners and Heat Pumps; Co-Sponsors: SSPC 41, Standard Methods for Measurements. 

• 1830-TRP-ReBid - Experimental Characterization of Aircraft Bleed Air Particulate Contamination; Responsible Committee: TC 9.3 (Transportation Air Conditioning); Co-Sponsors: SSPC 161, Air Quality within Commercial Aircraft

• 1852-TRP - Develop Performance Metric, Criteria, and Process to Measure and Predict Speech Privacy in High Performance Buildings; Responsible Committee: TC 2.6 (Sound and Vibration Control); Co-sponsors: TC 2.1 (Physiology and Human Environment); TC 4.4 (Building Materials and Building Envelope Performance); TC 9.6 (Healthcare Facilities)

• 1865-TRP - Optimizing Supply Air Temperature Control for Dedicated Outdoor Air Systems; Responsible Committee: TC 1.4 (Control Theory and Application; Co-Sponsors: TC 8.10  (Mechanical Dehumidification Equipment and Heat Pipes)

Please go to https://www.ashrae.org/technical-resources/reserach  to access the Requests for Proposals (RFPs) for each project.