Ashrae Journal - December 2008 - 48

Non-POE Refrigeration Oil for HFC Equipment out C h e c k it e webs our for o r c a ll REE F E! SAMPL Benefits Compatible with all HFC refrigerants R134a, R404A, R407C, R410A, etc. No Hydrolysis unlike POE (Polyolester) lubricants No reaction with water! PVE bond energy enhances anti-wear effectiveness Anti-wear effectiveness is enhanced when compared to POE Better solubility with process fluids Capillary Tube Blockage Superior resistance due to lack of hydrolysis Possible to eliminate HVAC systems filter dryer Current Customers Carrier ● Daikin ● Hitachi LG Electronics ● Panasonic Sanyo ● Tecumseh and more gineer have nearly completed their tasks when the engineer begins the final stages of detailed systems layouts. Some level of planning to reserve space for ductwork and piping will have been done, but the final layout of MEP systems requires careful consideration of other disciplines. The MEP engineer must collect the latest floor plans and sections from the architect and framing plans from the structural engineer before trying to fit all the ductwork and piping in the available space (whether they are using a pencil or a 3D model). This general design order is simply a non-negotiable element of the design process no matter how integrated the design approach is or how much preplanning is done. In the 3D object-based building model world, this design order is not going to change. The MEP is still the last one to the table and has to ensure that everything fits in the end. They need to collect architectural and structural information and then work out the engineering systems design based on these constraints. Interference checking, coordination, or whatever you want to call it, is simply an integral part of MEP system layout. This is not a new way of thinking for the MEP engineer. I mean no disrespect to the architects and structural engineers of the world, but I think it is fair to say that interference with MEP systems is not their primary concern as they finalize their design. With this in mind, who better to manage the process of collecting and merging the building physical data and then integrating MEP systems into this overall building model? The result of this process will be the avoidance of interferences, which is better than finding and fixing them later. BIM is a rapidly evolving tool, but there are still technical barriers that limit implementation of BIM and fully using interoperability. Solutions to these technical barriers are being developed but it is a daunting task (for example, development of GST and IDF Generator have stalled). There is no doubt that our industry will overcome these technical barriers as we move forward, but it is going to take time. A second barrier to actualization of BIM is the limitations that are a by-product of our existing mind-set regarding team roles. Even within the framework of the existing technical limitations, there are opportunities to do more with what is available if team roles are carefully examined. The MEP engineer has a tremendous challenge and a tremendous opportunity in this arena. To seize it, they must have a clear understanding of what this opportunity means and what expertise is needed to carry it out. The greatest success will come to those MEP firms that are proactive in the BIM arena, challenge existing mind-sets, and bring value and expertise to the table. References Idemitsu Lubricants America Corporation 2000 Town Center • Suite 1450 • Southfield, MI 48075 phone: fax: (248) 355-0666 (248) 355-9337 For product and purchase inquiries, visit our website: PVE-Idemitsu-usa.com www.info.hotims.com/16020-22 1. Bazjanac, V., A. Kiviniemi. 2007. “Reduction, simplification, translation and interpretation in the exchange of model data,” in D. Rebolj (ed), Bringing ITC Knowledge to Work, Proceedings of CIB 24th W78 Conference. http://tinyurl.com/5osbal. 2. U.S. General Services Administration (GSA). 2007. BIM Guide Series 2— Spatial Program Validation. http://tinyurl.com/bimspatial. 3. Maile, T., M. Fischer, V Bazjanac. 2007. “Building energy perfor. mance simulation tools—a life-cycle and interoperable perspective.” Working Paper WP107. Center for Integrated Facility Engineering (CIFE). http://tinyurl.com/wp107. December 2008 48 ASHRAE Journal

Ashrae Journal - December 2008

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