Ashrae Journal - October 2008 - 73

3. Quantify the effect of aircraft type, maintenance, APU, engine age and operations-related parameters on cabin and bleed air quality 4. Investigate relationship of the measured cabin air contaminants, ventilation rates and other factors with reported symptoms among passengers and flight crew. 040/08 – 03/10 GWA Research, LLC Principal Investigator: Gary Phetteplace TC 6.2, District Energy Research Strategic Plan Goals Supported: A3, A6, C1, D1, E1, E2 1267-RP Development of an ASHRAE Design Manual for District Heating and Cooling Systems The objective of this project is to develop a comprehensive design guide for district heating and cooling (DHC) systems. The emphasis would be on community-wide planning, thermal distribution and consumer interconnect. Guidance is generally less accessible in these areas and familiarity in the engineering community is much less prevalent. Users of the guide will be better able to assess the applicability of DHC systems and prepare feasibility studies to support their DHC evaluations. Occupant Responses and Energy Use in Buildings with Moderately Drifting Temperatures Up to one third of the world’s energy consumption is currently used for heating and cooling of buildings (DOE 2004, IEA 2004). Indoor operative temperatures that drift within the comfort zone may be used as a means of energy savings. However, research is needed to understand the effects of drifting temperatures on occupants’ thermal comfort, perceived air quality, sick building syndrome (SBS) symptoms and productivity. In particular, buildings that use night cooling with outside air, naturally ventilated and non-air-conditioned buildings, and buildings with hydronic systems using relatively high water temperatures for cooling, may experience temperatures that drift somewhat during the time of occupancy. For these and other types of buildings, detailed knowledge of occupant comfort, perception of SBS symptoms and performance under non-steady indoor thermal environment is highly relevant and needed. Performance Characterization of Selected Refrigerants in Flat Plate Microscale Condensers The objectives of the research are: 1. Generate, through experimentation, comparisons of heat transfer rates and pressure drops for selected refrigerants in a flat plate, single-channel, and microscale condenser. 2. Develop correlations of heat transfer coefficient and pressure drop using the experimental data obtained in this project together with data obtained in the literature and present it in a useful form for designers and suitable for publication in the ASHRAE Handbook— Fundamentals. Because fundamental flow, energy and mass transfer mechanics are being explored, the interpretation of the phenomena is critical. 3. Find if there is any deviation in heat transfer and pressure drop compared to macroscale, conventional heat exchangers and if there is, to quantify it. 04/07 – 09/09 AMCA Principal Investigator: Mark Stevens TC 5.1, Fans Research Strategic Plan Goals Supported: C6, D1, D7 1272-RP Inlet Installation Effects on Forward Curved Centrifugal Fans, Air and Sound The objective of this project is to obtain a body of measured inlet system effects for both air and sound for one typical size (12”) of forward curved centrifugal fans. The test fan is to be FC single width single inlet (SWSI) centrifugal fan. The aerodynamic and acoustic investigations should be made with carefully selected and controlled inlet appurtenances. Tests should be in accordance with ASHRAE 51/AMCA 210 air performance testing standard and AMCA 300 reverberant room sound testing standard with the resulting relationships cataloged as to show the relationship between aerodynamic and acoustic parameters with respect to geometric parameters. Field Performance Assessment of Package Equipment to Quantify the Benefits of Proper Service and Determine the Long Term Need for Monitoring, FDD, and Continuous Commissioning Technology The motivation for this research arises from recent ASHRAEsponsored research projects to study commissioning and fault detection and diagnostic (FDD) technology for HVAC equipment including 1020-RP, 1043-RP, and 1139-RP.These research projects primarily focus on air handling units and large chiller plants used in larger facilities.This study deals with field performance assessments of packaged HVAC equipment for small and medium size commercial buildings.The objective of this project is to quantify the benefits of proper service in this type of equipment by assessing the equipment’s current performance level in the field and documenting how the performance improves when equipment is properly serviced. This establishes a baseline for the maximum possible benefits.The project’s outcome should help establish the need for automated FDD and continuous commissioning tools. Measurement and Evaluation of Single-Phase Heat Transfer and Pressure Drop Inside Enhanced Tubes for Transition Flow The objective of this research project is to quantify the tube-side heat transfer and pressure drop characteristics of enhanced tubes in the transition region for single-phase flow and to study the effect of fin geometry and inlet flow configuration on transition Reynolds number. This study is designed to increase fundamental understanding of transition flows inside commercially available enhanced tubes. 09/05 – 01/09 Technical University of Denmark Principal Investigator: Jorn Toftum TC 2. 1, Physiology and Human Environment Research Strategic Plan Goals Supported: A1, A2, A6, A7, B2, B4, C2, C4, D5, E1, E2 1269-RP 04/04 – 01/09 ADM Associates Principal Investigator: Taghi Alereza TC 7.5, Smart Building Systems Co-Funding: $1,000 Bellsouth Telecommunications Research Strategic Plan Goals Supported: A1, A2, A5, A6, A7, C6, D5, E1 1274-RP 12/04 – 01/09 University of Maryland Principal Investigator: Michael Ohadi TC 1. 3, Heat Transfer and Fluid Flow Research Strategic Plan Goals Supported: A1, A2, A4, A6, C1, D1, D3, E1 1270-RP 09/03 – 01/09 (P) University of Pretoria, Africa Principal Investigator: Josua P Meyer . TC 1. 3, Heat Transfer and Fluid Flow Research Strategic Plan Goals Supported: A1, A2, A4, A6, C6, D1, D3,E1, E2 1280-RP 09/07 – 08/09 Purdue University Principal Investigator: Qingyan Chen TC 4. 10, Indoor Environment Modeling Research Strategic Plan Goals Supported: A5, A6, B2, B3, C1, C2, C3, E1 1271-RP 04/06 – 01/09 Blue Heaven Technologies, Inc Principal Investigator: Robert Burkhead TC 5.4, Industrial Modeling Low Velocity Large Scale Fluctuating Flows in Process Air Cleaning Ventilated Spaces at Transitional Reynolds Numbers The objective of this research is to provide a suitable adjustment Research Strategic Plan Goals Supported: A6, to a standard turbulence model that predicts turbulence levels in a B2, C4, E1 small room at transitional Reynolds numbers (based on the supply 1284-RP grille dimensions and flow). A benchmark quality room will be built and tested in order to validate all CFD models (figure 1). The dimensions of the room were selected to represent roughly ½ of an airplane passenger cabin or a passenger train or bus. Using existing test rooms of a similar size is encouraged. Changes in the supply and exhaust dimensions or 09/07 – 11/08 location may be made to optimize flow instability. The instability RTI International must be measured and reported as a spatial (3D) distribution of Vx, Principal Investigator: Vy, Vz and V’x, V’y , V’z versus time. The room will be enclosed James Hanley in a chamber in order to maintain as nearly adiabatic and isothermal TC 2. 4, Particulate Air conditions as possible. The turbulence levels will be defined two ways. First, as the Contaminants/ Removal Equipment standard kinetic energy of turbulence. Second, as some sort of second moment, V’2 , or skewness in the distribution of V’ in an effort to Research Strategic Plan Goals Supported: B2, quantify the brief excursions of V’ beyond twice Vavg. B3, C4 Several standard turbulence models will be run and compared to the test results after the testing phase; at which point a determination by the monitoring committee will be made to continue based on feasibility of the turbulence model adjustments. If the adjustment technique is satisfactory, the model adjustments will be made and CFD/model comparisons will be documented for the range of Reynolds numbers. If the techniques are not satisfactory, a recommendation should be made by the contractor as to which model is most accurate in regard to mean velocity, turbulence level and effective viscosity. Develop a Standard for Testing and Stating the Efficiency of Industrial Pulse Cleaned Dust Collectors Although ASHRAE Standard 52 and RP671 deal with test methods for evaluation of general ventilation air cleaners, their particulate loading rates are so low that they are not practical to evaluate industrial air cleaning equipment.Further, these test methods do not take into account the automatic cleaning methods that are usually in industrial air cleaners to keep a steady pressure drop, yet the cleaning action can result in increased emissions. As a result, there is a great need for a performance test procedure that addresses the higher particulate loading, and the wide variety of particulate contaminant types to permit measurement and reporting of the mass emissions and fractional collection of efficiency of industrial air cleaning devices. Particle Counter Specification for the Use with Filter Performance Test Standard ANSI/ASHRAE Standard 52. 2-1999 This project will advance the state-of-the-artby providing a scientific and technical basis for specifying those particle counter properties that are necessary and sufficient to optimize the accuracy and repeatability of tests performed under Standard 52. 2. These results will be of similar benefit to the SAE and CENorganizations for improving their filter testing standards. One reported problem with ASHRAE Standard 52. 2-1999 is that despite the current specif

Ashrae Journal - October 2008

Table of Contents for the Digital Edition of Ashrae Journal - October 2008

Ashrae Journal - October 2008

Contents

Commentary
Industry News
Letters
ASHRAE HQ Dedication Booklet
ASHRAE Rebuilds HQ to Reflect Mission
Feature Articles
ASHRAE's Living Lab
Meetings and Shows
Sizing Pipe Using Life-Cycle Costs
Feature Articles
Energy-Efficient Data Centers: A Close-Coupled Row Solution
The Future of 90.1
Ventilation Standard for Health Care Facilities
Grosvenor Humidity Chart
ASHRAE Research Report
ASHRAE Honor Roll
Building Sciences
Special Products
Emerging Technologies
Product Showplace
Classified Advertisting
Advertising Index
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Contents