ASHRAE Journal - October 2011 - 71

tions in the indoor thermal conditions and the outdoor environment. Such a building requires an intelligent control system that can switch automatically between natural and mechanical modes in such a way that minimizes energy consumption without compromising indoor air quality or the thermal comfort of its occupants.

1604-RP Demand Controlled Filtration for Cleanrooms

The objective of this research is to test ﬂat oval transition ﬁttings to determine their total pressure loss coefﬁcients, and update the ASHRAE Duct Fitting Database (2009). The tests are to be conducted in compliance with ANSI/ASHRAE Standard 120-2008, “Method of Testing to Determine Flow Resistance of HVAC Ducts and Fittings”, except (1) the ﬂow measuring station velocity shall not exceed 1.5 m/s (300 fpm), and (2) the entrance duct length to the test ﬁtting shall be increased from 10 hydraulic diameters to 12 diameters.

September 2011 – August 2013; Engsysco, Inc.; Principal Investigator, Wei Sun; TC 9.9, Clean Spaces

Very little research has been done on dynamic control of airﬂow to control particles in cleanrooms - matching airﬂow to the desired contamination limits. The high energy use and resulting cost for typical systems today and concern over availability of electricity suggests that the ventilation rate should be adjusted in order to achieve the desired cleanliness yet minimizing excess airﬂow. Up till now, this technology was not applied, as real time particle measurement systems did not have both sufﬁcient precision, reliability, and cost effectiveness, and controls did not have adequate reaction time. Also owners and operators of industrial cleanrooms have been hesitant to make changes to the air exchange rates in cleanrooms due to misconceptions that varying ﬂow rates through cleanroom ﬁlters will disrupt the ﬂow and cause particle counts to increase. The main objective of this project is to establish a scientiﬁc approach to implement demand controlled ﬁltration (ventilation rate) for cleanrooms for the two cleanroom classes (ISO, 7 and 8, (10 000 and 100 000) that have the broadest application. For example, these two classes comprise 85 to 90% of pharmaceutical class rooms. Based on the results of this research, a future project could well research applying this approach to other more stringent classes.

1613-RP

Update Climatic Design Data in Chapter 14 of the 2013 Handbook of Fundamentals

June 2011 – November 2012; Numerical Logics Inc.; Principal Investigator, Didier Thevenard; TC 4.2, Climatic Information; Co-sponsor, TC 4.1, Load Calculation Data and Procedures

The climatic design conditions in the HOF Chapter 14 are fundamental for the sizing and design of building energy systems to allow for optimal energy efﬁciency measures and ensure that the design conditions are related to the energy system capacity to meet the climatic loads in a probabilistic sense. Regular updating of the climatic conditions is critical in this respect for many practical reasons and to show due diligence in a world of changing climate.

1633-RP

Data and Interfaces for Advanced Building Maintenance and Operation

July 2011 – June 2013; KGS Buildings LLC; Principal Investigator, Stephen Samouhos; TC 1.4, Control Theory and Application

1606-RP Laboratory Testing of Flat Oval Transitions to Determine Loss Coefficients
September 2011 – December 2012; University of Illinois; Principal Investigator, Yuanhui Zhang; TC 5.2, Duct Design

More reliable data and/or a large database of ﬁtting loss coefﬁcients will help ASHRAE members and others to better design ductwork for their clients, enabling more accurate pressure drop calculations and less safety factor. This will allow fans to be sized properly, reducing energy consumption and wasted material. It should also generate an increase in sales for the ASHRAE Duct Fitting Database.

Develop a set of standard data-driven metrics, interfaces and dashboards for advanced building operation and management, segmented by building typology and stakeholder needs; prototype those dashboards, document methods of data collection, and test those metrics with real building data. Provide this body of work to help ﬁll the void in standards literature for informing designers and practitioners on how they can use building data to improve building operations, energy efﬁciency, comfort, and sustainability. Perform fundamental ﬁeld work by evaluating EMCS data and interfaces in 50+ buildings across the United States including 5 different EMCS platforms and 6 different building types, interview 50+ stakeholders, prototype and test 15+ complete dashboards, and review the pertinent technical literature. The following unsolicited research proposal is a direct adaptation of a previous ASHRAE RFP 1502-TRP, which received no bids when it was circulated for bids in spring 2010.

www.info.hotims.com/37991-47

October 2011

ASHRAE Journal

71
ASHRAE Journal - October 2011

Table of Contents for the Digital Edition of ASHRAE Journal - October 2011
