ASHRAE Journal - March 2009 - (Page 26)

Non-POE Refrigeration Oil for HFC Equipment out C h e c k it e ebs our w for a ll or c FREE 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 Photo 4: RC-2A condenser water second phase heat recovery. Current Customers Carrier ● Daikin ● Hitachi LG Electronics ● Panasonic Sanyo ● Tecumseh and more 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/23933-21 The electrical measures are composed of improvements in the performance of the lighting fixtures and in the performance of the fan, pumps, and compressor motors (using variable speed drives). 1,600 T12 lighting fixtures were replaced with more efficient T8 lighting fixtures. A variable speed drive was installed on each of the following: the leading heating pump supplying hot water from the boiler; the large supply fan (FAU-1); the main exhaust fan (VE-1), and the lead pump of the condenser-water cooling circuit that flows through the cooling towers (PC-2). The cooling tower circuit was converted from a constant-volume to variable volume system by installing a two-way valve at each AC unit. The valves close when their respective air-conditioning units are not used and the volume flow rate (gpm) of the water in the cooling tower circuit varies according to the actual need of the building (pressure sensors in the water are used for PID control of gpm). The variable speed drives corrected the power factors of the equipment as well. Air velocity, CO2 levels, and ambient temperatures were measured before the energy-saving measures were implemented and found acceptable. The occupants were satisfied with the thermal comfort before our measures were implemented. The fresh air unit (FAU-1) was capable of meeting and surpassing the fresh air requirements2 before the measures, supplying up to 40,000 cfm (18 878 L/s) of fresh air (and at least 15 cfm [7 L/s] per person on every floor). The goal was to maintain existing air quality. After the energy-saving measures were installed CO2 levels and air velocity were verified throughout the building and found to be just as good as before. A CO2 sensor was installed in the return duct of the ventilation system and tied into the DDC system. The speed of the fresh air supply fan, when not in freeMarch 2009 26 ASHRAE Journal http://www.PVE-Idemitsu-usa.com http://www.PVE-Idemitsu-usa.com http://www.info.hotims.com/23933-21

Table of Contents Feed for the Digital Edition of ASHRAE Journal - March 2009

Contents Commentary Industry News Letters Meetings and Shows Special Section 2009 ASHRAE Technology Awards Feature Articles Heat Recovery for Office Tower Air Motion Control in the Hospital Operating Room Anniversary Feature: Five Defrost Methods for Commercial Refrigeration Groundwater Issues: Commercial Open Loop Heat Pump Systems Used Filters and Indoor Air Quality Building Sciences Emerging Technologies Washington Report Products Special Products People Classified Advertising Advertising Index

ASHRAE Journal - March 2009

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