Variable Volume Loading Method: A Convenient and Rapid Method for Measuring the Initial Emittable Concentration and Partition Coefficient of Formaldehyde and Other Aldehydes in Building Materials

2011 ◽  
Vol 45 (23) ◽  
pp. 10111-10116 ◽  
Author(s):  
Jianyin Xiong ◽  
Wei Yan ◽  
Yinping Zhang
Keyword(s):  
Partition Coefficient ◽  
Rapid Method ◽  
Building Materials ◽  
Volume Loading ◽  
Variable Volume ◽  
Loading Method

Development, Field Testing and Implementation of Automated, Hydraulically Controlled, Variable Volume Loading Systems for Reciprocating Compressors

2002 ◽  
Author(s):  
Dwayne A. Hickman ◽  
John Slupsky ◽  
Bruce M. Chrisman ◽  
Tom J. Hurley
Keyword(s):  
Return On Investment ◽  
Stable Process ◽  
Field Testing ◽  
Load Control ◽  
Mechanical Reliability ◽  
Volume Loading ◽  
Actual Case ◽  
Actual Performance ◽  
Variable Volume ◽  
Different Types

Automated, variable volume unloaders provide the ability to smoothly load/unload reciprocating compressors to maintain ideal operations in ever-changing environments. Potential advantages provided by this load control system include: maximizing unit capacity, optimizing power economy, maintaining low exhaust emissions, and maintaining process suction and discharge pressures. Obstacles foreseen include: reliability, stability, serviceability and automation integration. Results desired include: increased productivity for the compressor and its operators, increased uptime, and more stable process control. This presentation covers: (1) system design features with descriptions of how different types of the devices were developed, initial test data, and how they can be effectively operated; (2) three actual-case studies detailing the reasons why automated, hydraulically controlled, variable volume, head-end unloaders were chosen over other types of unloading devices; (3) sophisticated software used in determining the device sizings and predicted performance; (4) mechanical and field considerations; (5) installation, serviceability and operating considerations; (6) device control issues, including PC and PLC considerations; (7) monitoring of actual performance and comparison of such with predicted performance; (8) analysis of mechanical reliability and stability; and (9) preliminary costs versus return on investment analysis.

An improved extraction method to determine the initial emittable concentration and the partition coefficient of VOCs in dry building materials

2009 ◽  
Vol 43 (26) ◽  
pp. 4102-4107 ◽  
Author(s):  
Jianyin Xiong ◽  
Wenhao Chen ◽  
James F. Smith ◽  
Yinping Zhang ◽  
Jianshun Zhang
Keyword(s):  
Partition Coefficient ◽  
Extraction Method ◽  
Building Materials
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