Thermal Performance Ratings 1

Transcription

1 SS-EES-6 April 1994 Thermal Performance Ratings 1 Public Information Office 2 THERMAL PERFORMANCE RATINGS, derived from the FSEC testing certification program, are a useful tool in comparing the efficiency economics of various flat-plate solar collectors. Since collectors used in domestic hot water (DHW) systems typically operate in the intermediate temperature range (120 F-160 F), this is the rating provided for comparisons. It must be stressed that these comparisons are only a guide should not be considered as a rank ordering of collectors. Such considerations as component sizing proper installation procedures are equally important in determining a system s overall efficiency. In addition, because of the variability of weather conditions, instrumentation accuracies, other test condition constraints, the thermal performance of any two collectors should be considered approximately the same if their ratings are within 25 Btu/(ft 2 day) of each other. Bear in mind that comparisons based on these ratings address thermal efficiency energy output per investment dollar only; they do not imply equivalent reliability or durability among collectors. Following are two approximate comparison methods: 1 ) To compare the thermal efficiency of different collectors, look at the Btu/(ft 2 day) rating (last column); the higher the number, the better the solar energy collection efficiency (which means it will require fewer square feet of collector area to do the job). 2) To determine the collector that supplies the most energy per investment dollar, divide the Btu/day rating (next to last column) by the total installed cost of the system, then multiply the result by the number of collectors used. EXAMPLE: Collector X has a Btu/day rating of 25,000. Your dealer has given you a price of $2,000 for an installed system consisting of two collectors. Calculate as follows: 25,000 2,000 = x 2 = 25 Btu/day per dollar invested. 1. This document is SS-EES-6, is provided as service by the Florida Cooperative Extension Service, Institute of Food Agricultural Sciences, University of Florida. Publication date: April First Published: January For questions about this publication, contact the author(s). For more information on the subject, please contact your local county cooperative extension service office. 2. Florida Energy Center, State University System of Florida, 300 State Road 401 Cape Canaveral, Florida The Florida Energy Extension Service receives funding from the Energy Office, Department of Community Affairs, is operated by the University of Florida s Institute of Food Agricultural Sciences through the Cooperative Extension Service. The information contained herein is the product of the Florida Energy Extension Service does not necessarily reflect the view of the Florida Energy office. The Institute of Food Agricultural Sciences is an equal opportunity/affirmative action employer authorized to provide research, educational information other services only to individuals institutions that function without regard to race, color, sex, age, hicap, or national origin. For information on obtaining other extension publications, contact your county Cooperative Extension Service office. Florida Cooperative Extension Service / Institute of Food Agricultural Sciences / University of Florida / Christine Taylor Stephens, Dean

2 Thermal Performance Ratings Page 2 Glazing Acorn Structures Sunwave Mark-II Selective , Acorn Structures Sunwave Mark-II (20 ft) Selective , Aircraftsman Company A-3 Selective , Amcor Group, Ltd. AM 120 steel fins Selective , Amcor Group, Ltd. AM 80 steel fins Selective , Amcor Group, Ltd. SOLON 120 steel fins Selective See Note 2 See Note 2 Amcor Group, Ltd. SOLON 170 steel fins Selective See Note 2 See Note 2 AE 40-C Selective , AE-21 Selective , AE-24 Selective ,

3 Thermal Performance Ratings Page 3 Glazing AE-24P , AE-26 Selective , AE-32 Selective , AE-32P , AE-40 Selective , AE-40P , AE-50 Selective , AE-50P Non , MSC-21 Selective , MSC-24 Selective ,

4 Thermal Performance Ratings Page 4 Glazing MSC-26 Selective , MSC-32 Selective , MSC-40 Selective , American King Corp TLS Selective , American King Corp. SS-11 Selective , American King Corp. SS-12 Selective , American Network, Ltd. ASN-30-A 1 Clear rigid plastic UV Stabilized EPDM None , American Network, Ltd. ASN-45-A 1 Clear rigid plastic UV Stabilized EPDM None , American Network, Ltd. ASN-60-A 1 Clear rigid plastic UV Stabilized EPDM None , Applied Dynamics, *TM 32 Selective , Applied Dynamics, *TM 40 Selective , Applied Dynamics, *TM 50 Selective , Aquatherm Selective ,

5 Thermal Performance Ratings Page 5 Glazing Aquatherm Selective , Aquatherm Selective , Aquatherm Selective , Boricua Sol BC-42 Non , Caribbean Products, Omnisolar I Non , Caribe Sol de Puerto Rico Delta-2000 Non , Caribe Sol de Puerto Rico M FRP Copper tubes Non , Carolina Water Stoves, * CWS-32 Selective , Carolina Water Stoves, * CWS-40 Selective , Carolina Water Stoves, SOLARMAX-32B Non , Carolina Water Stoves, SOLARMAX-32C Selective , Centro Sol CS-1 Non , Cole Systems, 306H Selective ,

6 Thermal Performance Ratings Page 6 Glazing Cole Systems, 308K , Elbart Manufacturing Co. Series FRP Copper tubes Non , Energy Mate EM40SS , Equinox, * EP-406G Non , Equinox, * EP-406SC Selective , Equinox, * EP-408 G Non , Equinox, * EP-408 SC Selective , Equinox, * EP-410-G Non , Equinox, * EP-410-SC Selective , FAFCO, 444A 3 Thin film plastic Copper tubing SEE NOTE 1 SEE NOTE 1 Fournelle Energy Technologies EER-12 steel fins Selective , Gezelman Super 4 8 Selective , Gezelman Super 4 10 Selective ,

7 Thermal Performance Ratings Page 7 Glazing Gould Energy Systems COSMOS 180B Non , Gulfstream, American Eagle 1 Glass Copper sheets w/integral tubes Non , Hanson Energy Products Hansolar TA-3 1 Glass Aluminum sheet Non , Hydro- Star/Sunrise Supply * Hydro-Star HSC 32 Selective , Hydro- Star/Sunrise Supply * Hydro-Star HSC 40 Selective , Keenan Manufacturing, Co. The Eye Model , Kimex International Tech., II SOLAR ENERGIZER Selective , Mid-Carolina MCS-32-1 Selective , Mid-Carolina MCS-40-1 Selective , Moore Energy Systems * MES-32 Selective , Moore Energy Systems * MES-40 Selective ,

8 Thermal Performance Ratings Page 8 Glazing * BFC 308 A-2 Selective , BFC 308-A Selective , BFC 308-C Selective , * BFC 308C-2 Selective , BFC 408 A-2 Selective , BFC 408-A Selective , BFC 408-C Selective , * BFC 408C-2 Selective , BFC 410-A Selective , BFC 410-C Selective , * BFC 410A-2 Selective ,

9 Thermal Performance Ratings Page 9 Glazing * BFC 410C-2 Selective , * BFP 308 A-2 Non , BFP 308-A Non , BFP 308-C Non , * BFP 308C-2 Non , * BFP 408 A-2 Non , BFP 408-A Non , BFP 408-C Non , * BFP 408C-2 Non , * BFP 410 A-2 Non , BFP 410-A Non ,

10 Thermal Performance Ratings Page 10 Glazing BFP 410-C Non , * BFP 410C-2 Non , * HWSG124F , * HWSG-132F , * HWSG-140F , * HWSG-148F , * HWSGBC-124F Selective , * HWSGBC-132F Selective , * HWSGBC-140F Selective , Industries, * HWSGBC-148F Selective , P.S. Industries Sunblazer 2,144 Selective , Power-Save Products, TH. MK.I Freon 1 F R P Copper sheets w/ integral tubes Non , Productos de Sol, S.A. CSP-20-B Non , Productos de Sol, S.A. * CSP-20-B Selective Selective ,

11 Thermal Performance Ratings Page 11 Glazing S & L Systems TR Non , S & L Systems TR Non , Sage Advance Copper Cricket 1A Selective See Note 2 See Note 2 Solahart U.S.A. 180JK 1 Glass Steel sheets w/integral tubes Selective See Note 2 See Note 2 Solahart U.S.A. 300JD 1 Glass Steel sheets w/integral tubes Non See Note 2 See Note 2 Solahart U.S.A. 300 JK 1 Glass Steel sheets w/integral tubes Selective See Note 2 See Note 2 Solahart U.S.A. 80 GE- Plus Sup Non See Note 2 See Note 2 Solahart U.S.A. 80GE-II Non , Development SD6A (4 10) Selective , Development * SD7CRW (3 6) Selective , Development SD7CRW (4 10) Selective ,

12 Thermal Performance Ratings Page 12 Glazing Development SD7CRW (4 13) Selective , Development SD7CRW (4 8)S Selective , Development SD7CRW (4 10)S Selective , Development SD7CRW (4 8) Selective , Development SD7S (4 10) Selective , Development SD7S (4 8) Selective , Development * SD7WB (4 10) Sunstar , Development * SD7WB (4 8) Sunstar , Development SD8 (4 10) Selective , Development SD8 (4 13) Selective , Development SD8 (4 8) Selective , Devices, pack 182 Non , Energy & Resources, 185 Non ,

13 Thermal Performance Ratings Page 13 Glazing Energy Conservation Mfg. 20-A Non , Engineering Company FP27 1 Glass Aluminum W/integral tubes Non , Heater Manufacturer SHM-10 1 FRP Copper tubes Non , Industrial Associates, Machine Glass Copper sheets W/integral tubes Non , Sales, * Native Sun-25 Non , Sales, * Native Sun-32 Non , Sales, * Native Sun-40 Non , Sales, * Native Sun-40C Selective , Systems by Sun Dance, 32 M.T.F. Selective , Systems by Sun Dance, 40-MTF Selective , Technology Engineering * SB-192 Non ,

14 Thermal Performance Ratings Page 14 Glazing Technology Engineering SD-192 Non , Trek, Trek I 40 gal Selective See Note 2 See Note 2 Trek, Trek I 80 gal Selective See Note 2 See Note 2 Water Htrs of New Port Richey SWH-32A Non , Span Internationale, RP33 1 Clear rigid plastic UV Stabilized polyproplene None , y Sun Catcher 24 Non , y Sun Catcher 24S Selective , y Sun Catcher 32 Non , y Sun Catcher 32S Selective , y Sun Catcher 32SA Selective , y Sun Catcher 40 Non , y Sun Catcher 40S Selective ,

15 Thermal Performance Ratings Page 15 Glazing y Sun Catcher 40SA Selective , fin, T-27 Selective , fin, * T-33 1 FRP Copper tubes Non , Solcan Ltd. SOLCAN 3001 Non , Sun Devil BC-3496 Selective , SunEarth, EMB 38 Selective , SunEarth, EMB 410 Selective , SunEarth, EMB 48 Selective , SunEarth, EMC 38 Non , SunEarth, EMC 410 Non , SunEarth, EMC 48 Non , SunEarth, SS Glass Copper tank Selective See Note 1 See Note 1 SunEarth, SS2000-Preheat 1 Glass Copper tank Selective See Note 1 See Note 1

16 Thermal Performance Ratings Page 16 Glazing SunEarth, SS2000- Plus 1 Glass Copper tank Selective See Note 1 See Note 1 SunBelt, SSC-BC25 Selective , Sunl Indistries, * F-25C Selective , Sunl L-40C Selective , Sunlite Home Products, AEC 410 Selective , Sunlite Home Products, AEC 410T , Sunlite Home Products, S.E.I. 410T , Sunlite Home Products, S.E.I. 48T , Sunlite Home Products, SE 48 Selective , Sunlite Home Products, SE 48T , Sunlite Home Products, SEI-28 1 Clear rigid plastic Copper tubes , Thermal Conversion Technology PT-40-CN 2 Thin film plastic Copper tubing Selective See Note 1 See Note 1 Thermomax USA Ltd. THS 200 Selective ,

17 Thermal Performance Ratings Page 17 Glazing Thermosal de Puerto Rico T.S. 001 Non , * AF-18-DG 2 Glass Copper tubes Non , * AF-18-SG Non , * AF-21-DG 2 Glass Copper tubes Non , * AF-21-SG Non , * AF-25-SG Non , * AF-32-DG 2 Glass Copper tubes Non , * AF-32-SG Non , * AF-40-DG 2 Glass Copper tubes Non , * AF-40-SG Non ,

18 Thermal Performance Ratings Page 18 Glazing * AF-50-SG Non , * CF-18-SG Non , * CF-18-SGC Selective , * CF-21-SG Non , * CF-21-SGC Selective , * CF-24-SG Non , * CF-24-SGC3 Selective , * CF-25-SG Non , * CF-25-SGC Selective , * CF-32-SG Non , * CF-32-SGC Selective , * CF-40-SG Non , * CF-40-SGC Selective , * CF-50-SG Non ,

19 Thermal Performance Ratings Page 19 Glazing * CF-50-SGC Selective , Sunflare4000 Plu 1 FRP Steel tank Non See Note 1 See Note 1 United Energy RU-40 2 Glass Steel tank See Note 1 See Note 1 Universal Engineering Company Glass Aluminum w/integral tubes Non See Note 2 See Note 2 Zach II, 600-A 1 Clear rigid plastic Copper tubes Selective , Zach II, Clear rigid plastic Copper tubes Selective , Note 1: Integral storage system, see summary sheet for additional information. Note 2: Thermosyphon system, see summary sheet for additional information. * The flow rate through a solar collector affects its performance, but may or may not affect the performance of the system in which it is installed. Some of the collectors listed here have been tested at flow rates other than those specified by testing stards. These collector models are identified with an asterisk (*) immediately preceding the model number.