ASHRAE Journal - October 2020 - 80

RESEARCH REPORT

HVAC system application, reducing the cost and improving the performance be used in future efforts to update the Radiant Time Series method for
radiant cooling applications or the weighting factor method for energy
of DDC systems.
performance modeling.
1720-RP

Validation of Gas Phase Air Cleaner Performance
Test Method (Standard 145.2) by Laboratory Testing
of Commercially Available Filtration

September 2017 - August 2021 (P); RTI International; Principal Investigator, Kathleen Owen;
TC 2.3, Gaseous Contaminants/Removal Equipment, Co-sponsored by: SSPC 145: Test Methods
for Assessing Performance of Gas Phase Air Cleaning Equipment & SSPC 62.1: Ventilation for
acceptable indoor air quality

Validating the 145.2 Standard will facilitate the use of the IAQ Procedure
ASHRAE Standard 62.1 "Ventilation for acceptable indoor air quality" by
providing the quantitative information from this test validation of gas phase
filters that can be used during the IAQ Procedure and provide the end user
with quantitative information for gas phase filter selection. Potentially a
large percentage of ASHRAE's engineer members could be influenced, in
addition to building operators, HVAC contractors, and equipment installers.
The results from this project will also facilitate development of an improved
gas-phase filter Users' Guide for engineers, contractors and installers,
and guidelines for laboratories wishing to implement the Standard and
incorporate the filters.
1721-RP

Oil Return and Retention in Unitary Split System
Gas Lines with HFC and HFO Refrigerants

April 2017 - May 2021 (P); Purdue University; Principal Investigator; Eckhard Groll; TC 8.11,
Unitary and Room Air Conditioners and Heat Pumps, Co-sponsored by: TC 10.3 Refrigerant Piping,
Controls and Accessories; TC 3.4, Lubrication

The objective of this project will be to develop rules for sizing refrigeration
interconnecting gas piping in unitary split systems to ensure oil return to
the compressor in both air-conditioning and heat pump applications. Both
horizontal and vertical lines would need to be addressed. The rules that
are developed would be such that they would be applicable to all existing
refrigerant-oil combinations currently in use as well as new.
1729-RP

Experimental Verification of Cooling Load
Calculations for Spaces with Non-Uniform
Temperature Radiant Surfaces

1733-RP

Develop Design Criteria for Psychrometric Air
Sampler and Mixer Apparatus for Use in ASHRAE
Test Standards

August 2018 - February 2021 (P); Oklahoma State University; Principal Investigator: Christian
Bach; TC 8.11, Unitary and Room Air Conditioners and Heat Pumps

This research will improve the consistency between the manufacturer
and audit test facilities, which will result in less risk and improved verification of compliance standards. This project will provide technical detail to
HVAC testing laboratories that test unitary systems where the air must
be sampled for both dry bulb temperature and humidity. This sampling
impacts all users of psychrometric test facilities from the development
of performance ratings to the verification of compliance with energy efficiency standards.
Reproducing a Representative Urban Atmospheric
Distribution at High Concentration in
the Laboratory for Air Filter Ageing to be used
in ASHRAE GPC 35P for Determining the Energy
Consumption Caused by Air Filters

1734-RP Aerosol

August 2017 - December 31, 2021 (P); Purdue University, Principal Investigator: Brandon
Boor; TC 2.4, Particulate Air Contaminants and Particulate Contaminant Removal Equipment,
Co-sponsored by: SSPC 52. Method of Testing General Ventilation Air Cleaning Devices for Removal
Efficiency by Particle Size

The results from this work statement would affect the energy usage and
design criteria for several ASHRAE Handbook Chapters and Standards. The
Handbook chapters that would be affected are Chapter 29-Air Cleaners for
Particulate Contaminants, HVAC Systems and Equipment Handbook; and
Chapter 46-Control of Gaseous Indoor Air Contaminants, Handbook-Applications.
Understanding Fan Coil Components and How
Relate to Energy Consumption and Energy
Modeling

1741-RP They

September 2016 - July 2020 (P); University Texas - Austin; Principal Investigator, Atila
Novoselac; TC 4.1, Load Calculation Data and Procedures

January 2017 - March 2020 (P); University Louisiana Lafayette; Principal Investigator, Peng
Yu; TC 5.3, Room Air Distribution, Co-sponsored by: TC 4.7, Energy Calculations & TC 7.7, Test &
Balance

The results of the project will improve the cooling load methods described
in ASHRAE Handbook-Fundamentals by enhancing their applicability to radiant systems that utilize radiation heat transfer to directly remove space heat
gains from the conditioned space. Knowledge of the dynamic interaction
of radiant systems with various heat sources will produce guidelines for
modeling space conditioning systems that involve radiation heat transfer,
which include radiant and stratified systems UFAD and displacement
ventilation) that will create non-uniform surface temperatures in the space.
The results and improved modeling methods from this project could also

The experimental results and recommendations will result in previously
unavailable part load capacity and efficiencies maps for fan coil systems.
The new tools and modeling options developed will improve the ability of design engineers to evaluate and predict the energy and comfort performance
of buildings using fan coil systems. The better understanding of efficiencies
at part load operations achieved from this project will allow more confident
applications by system designers. This will reinforce the value of ASHRAE
guidelines to building systems, and support ASHRAE's net-zero energy
design strategies. This research will be of great value to the Engineering

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ASHRAE Journal - October 2020

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