Energy Strategies in Large Scroll Compressors 2011 Advanced Energy Conference 13 October 2011 James W. Bush 1
BITZER Group Worldwide 2,586 Employees 32 Operative Sites Export Business > 90% Production and/or distribution Representative office 2
Product Range Overview Recips Screws Scrolls Design Center: Schkeuditz, Germany Design Center: Rottenburg, Germany Design Center: Syracuse, NY 3
CNY Timeline BITZER Scroll, Inc. 2006 Opening of Scroll Design Center in September 2007 Incorporation of BITZER Scroll Inc. 2008 Relocated Design Center and Established Pilot Scroll Manufacturing at the Salina Industrial Powerpark 60,000ft 2 2009 Delivery of 1 st Compressors in March & Celebration of Grand Opening in October 4
BITZER Served Markets Industrial Process Mfg g, Life Sciences, Data centers Retail (refrigeration) Supermarkets, Big Box, Convenience Stores Transportation Transportation Refrigeration and HVAC Commercial: Commercial Real Estate, Offices, Lodging Institutional Healthcare, Education, Government Recent activity driven by government stimulus programs 5
R410A Product Overview Orbit 8 Six capacity sizes 15-40 HP for air-conditioning & Heat Pumps Orbit 6 - Seven capacity sizes 7.5-20 HP for air-conditioning & Heat Pumps Orbit 6 Orbit 8 0 5 10 15 20 HP 25 30 35 40 4 6
ORBIT 8 Series: Success in US & Europe 150 Ton Water-Cooled Chiller Reversible Heat Pump Chiller 100 Ton Air-Cooled Chiller 7
Energy Efficiency in American Standards ASHRAE 90.1-1999 Adopted by Congress in the Energy Policy Act of 2005 as a Federal Standard. Requires states to have an energy standard. Must meet or exceed ASHRAE 90.1 1999. Some states or local areas have adopted revised standards which exceed ASHRAE 90.1-1999 in an effort to improve or plan ahead to future requirements. Standards adopting policy of Sustainability. Written in language similar to legal codes or regulations. Code Language Document Easier to adopt as legislation 8
Extended Application Diagram Heat Pump Increasing demand for reversible chiller and heat pumps Trend in Europe toward classifying heat pumps as a Renewable Energy Resource Potential for Incentives and Tax Credits 9
Energy Efficiency in American Standards Addendum m of 90.1-2007 Situation: VSD increases the system part load efficiency by up to 30%. Drive losses reduce full load efficiency by up to 4%. Addendum m Introduces two paths to ASHRAE 90.1 compliance on water-cooled chillers. Path A = Significant operation at full load and Process loads Path B = Significant operation at part load 10
Frequency Inverter Applications ORBIT 8 Scroll compressors are compatible with frequency inverters drives Product is approved for use as follows Initial approved range is 35-65Hz for all Models Range to 75Hz is is Now Released up to 32 Tons 11
IPLV, IEER, ESEER Industry need seen in IPLV, IEER & ESEER ratings Greatest weighting to part load conditions Air Cooled Water Cooled Load Weighting ARI - IPLV Weighting Eurovent ESEER ARI Ambient (EDB) ESEER Ambient (EDB) ARI Ambient (EWT) ESEER Ambient (EWT) 100% 1% 3% 95F (35 C) 35 C 85F (29.4 C) 30 C 75% 42% 33% 80F (26.7 C) 30 C 75F (23.9 C) 26 C 50% 45% 41% 65F (18.3 C) 25 C 65F (18.3 C) 22 C 25% 12% 23% 65F (12.8 C) 20 C 65F (18.3 C) 18 C Evaporator: ARI: 44 F (6.7C), 2.4 gpm/ton (0.043 L/s per kw) ESEER: 7 C, Mfr s rated flow rate http://www.eurovent-certification.com/ 12
IPLV, IEER, ESEER GSD 8 Performance Strategy Standard Product has efficiency biased toward lower condensing temperatures for IPLV (and future IEER). Water Cooled Product is biased to even lower condensing. Isentropic Efficiency ηs 80% 75% 70% 65% 60% 55% Water Cooled Rating Points Matches Rating Point Competitive Standard Air Cooled 50% 70 80 90 100 110 120 130 140 150 SCT (ºF) 13
IPLV, IEER, ESEER Standard condensing (air cooled) systems Up to 12% better IPLV 23.00 IPLV Air Cooled 21.57 IPLV [Btu/W] 21.00 19.00 (0.56 KW/ton) +12% +12% 19.20 19.14 17.00 (0.62 KW/ton) (0.63 KW/ton) 15.00 "Air cooled Version" BITZER Competitor 1 Competitor 2 14
IPLV, IEER, ESEER Reduced condensing (water cooled/ evaporative) systems Up to 30% better IPLV IPLV Water Cooled 30.00 29.41 IPLV [Btu/W] 28.00 26.00 24.00 (0.41 KW/ton) +24% 23.74 +30% 22.55 22.00 (0.51 KW/ton) (0.53 KW/ton) 20.00 "Water cooled Version" BITZER Competitor 1 Competitor 2 15