SARAVEL OPEN TYPE LIQUID CHILLERS 50 TO 600 NOMINAL TONS

Transcription

1 CAT-SL-00( (0) SARAVEL OPEN TYPE LIQUID CHILLERS 50 TO 600 NOMINAL

2 TABLE OF NTENTS Introduction Physical & Electrical Data Selection Examples Ratings Single Compressor Models Single Compressor Models Pressuree Drop Ratings Two Compressor Models Two Compressor Models Pressure Drops Ratings Four Compressor Models Four Compressor Models Pressure Drops Dimensions Single Compressor Models Dimensions Two Compressor Models Dimensions Four Compressor Models Engineering Specifications Conversion Tables NOTE: All specifications & dimensions subject to change without notice. Copyright by SARAVEL Corp.00 All rights reserved. This catalog may not be reproduced in any form or by any means without the prior permission of SARAVEL corp

3 3 INTRODUCTION BENEFITS AND FEATURES SARAVEL open type packaged liquid chillers are designed to suit a variety of applications in commercial, institutional, and residential air conditioning as well as industrial process fluid cooling. With capacities ranging from 50 to 600 Tons, these units can provide significant installationn versatility in hospitals, hotels, schools, stadiums, and apartment complexes. Two basic systems are offered by SARAVEL: The water cooled package where the water cooled condenser is integrated with the package and the air cooled package where the air cooled condenser is a separate unit ( For selection of air cooled condensers refer to SARAVEL Cat. No ). SARAVEL open type liquid chillers are designed and built to provide reliable, efficient performance and easy serviceability through the incorporation of the following features. MPRESSOR At the heart of the SARAVEL open type chiller is an open type, multi-cylinder compressor designed to run at 0 RPM, an extremely compact and rugged compressor unit which incorporates many engineering features: Conformatic, cast aluminum pistons eliminate piston slap while maintaining a closer piston fit under all operating conditions while holding groove and ring wear to a minimum. The compressor is fitted with a forced feed, self- reversing positive displacement type oil pump which lubricates the internal moving components through an internally channeled and piped lubricating system. EVAPORATOR The direct expansion cooler designed for highest efficiency features, the refrigerant flows in the tubes and a series of baffles direct water over the refrigerant tubes. The evaporator and low temperature lines are completely protected with closed-cell fire retardant insulation for thermal insulating, condensation prevention, and vapor seal. The condenser is a shall and tube heat exchanger with integrally finned tubes. Both the evaporator and the condenser are designed and constructed according to the ASME-Division VIII Unfired Pressure Vessel Code and the Standards of the Tubular Exchanger Manufactures Association (TEMA). NTROLS SARAVEL open type chillers utilize a control panel designed for automatic operation and phase control for insuring the safety of the units and sequencing control. Partial unloading and capacity control is obtained by means of a small oil-pressure operated piston which actuates the unloading mechanism via a solenoid valve and multi-stage thermostat t responsive to load conditions. A Star-Deltaa starter impresses the voltage across the Star-connection to reduce the current on the first step and after a predeterminedd time lapse the motor is connected in delta, thus permitting full current to deliver the full rated load torque. The safety controls include high and low pressure cut-outs, oil pressuree safety cut-out, motor overload protection, flow switch, and anti-freeze control. All selected from the most reliable and recognized brand names in the air-conditionin ng and refrigeration industry.

4 PHYSICAL & ELECTRICAL DATA TABLE. PHYSICAL DATA OF & MPRESSORS Compressors (open type) Motor Evaporator MODEL No. of compressor No. of cylinder (Each comp.) Optional Capacity* Unloading% No. of Motors Standard Motor HP Optional Motor HP Shell O.D. Inch Tube Length mm Outside Area Sq. F t Water Volume Liters Shell O.D. Inch Tube Length mm -50- Inside Area Sq. Ft Condenser No. of Passes Water Volume Liters 3 Oil Liters 3 3 R- W-Models Kg Operating Charges R-** A-Models Kg. 3.7 Operating Weight (Kg) W-Models (Kg) A-Models (Kg) * Standard capacity unloading: max. stages. ** R- charge for chiller only. Total Charge = Chiller + Condenser + Piping x x 00 x 65 x 50 x TABLE. EL CTRICAL DATA OF & MPRESSORS Motor Compressorr System MODEL No. of motors Standard HP Name Plate Amps Starting Amps Full Load Amps Max. Starting Amps Wire Sizing Amps

5 5 PHYSICAL & ELECTRICAL DATA TABLE. PHYSICAL DATA OF & MPRESSORS (Continued) MODEL No. of Compresso No. of cylinder (Each comp.) Compressors Optional (Open Type) Capacity* Unloading No. of Motors Standard Motor HP Motor Optional Motor HP Shell O.D. Inch Tube Length Outside Evaporator Area Sq. Water Volume Shell O.D. Inch x x x 6 x 6 x 6 x x Tube Length x 00 x 3000 x 3000 x 3500 x 3500 x 3500 x 000 Inside Area x 65 x 77 x 0 x x x 377 x 30 Condenser No. of Passes Water Volume x 6 x 67 x 0 x 5 x x 33 x 55 Oil Liters x 3 x 3 x 3 x 3 x 3 x 3 x 3 R- W-Models Operating Charges R-** A-Models Operating Weight (Kg) W-Models (Kg) A-Models (Kg) * Standard capacity unloading: max. stages. ** R- charge for chiller only. Total Charge = Chiller + Condenser + Piping TABLE. EL CTRICAL DATA OF & MPRESSORS (Continued) Motor Compressor System MODEL No. of motors Standard HP Name Plate Amps Starting Amps Full Load Amps Max. Starting Amps Wire Sizing Amps

6 SELECTION EXAMPLES 6 SELECTION GUIDELINE SARAVEL reciprocating liquid chiller ratings presented in Tables 3 through 30 indicate the capacity of the chiller at conditions listed below: Chilled water flow rate based on. gpm per ton assuming 0 F chilled water temperature drop. Condenser water flow based on 3 gpm per ton, assuming 0 F water temperature rise condenser/cooler water fouling factor. For conditions other than those listed above, use the Chilled water correction factors tabulate below: RANGE F 6 0 SAMPLE SELECTION (Water Cooled Condenser) Given: Chill 600 gpm of water from 50 F to F and fouling factor specified for the cooler with 5 F to 95 F condenser water available. A fouling factor of is also specified for the condenser. Find: Unit model and size Unit actual capacity KW Condenser water flow rate Cooler/Condenser water pressuree drop Solution:. Chilled Water Range: 50 F F = F From the chilled water correction factors table, the Correction factors are for Tons and for KW.. Capacity (): = FACTS FF FF FF KW KW KW Select Model: From the ratings, a Model SL- 0-W (TABLE 9) has the capacity rang equired. For a cooler leaving water temperature of Fand a condenser leaving water temperature of 95 F, the unit capacity rating table indicates: = 06. = 00. The corresponding KW can be calculated according to: KW = x 0.7 = 00. x 0.7 = 9 KW. Apply Chilled Water Correction Factor: Ratings are based on fouling factor for both cooler and condenser. The actual condenser heat rejection should be computed after the appropriate correction factors for fouling factor have been applied to and KW. = 06. x = 0 KW 9 x = Determine Average Full Load KW at 00 Tons: KW= x 7.9 = Determine Condenser Water Heat Rejection: Heat Rejection () = (Tons x ) + (KW x 3.5) = (00 x ) + (7. x 3..5) = Determine Condenser Water Flow Rate: The water flow rate through the condenser may be determined using the following equation: CW =. Determine Cooler/Condenser Pressure Drops: From the curves in Figures 3 and, the pressure drops with 600 through the cooler and 50 through the condenser of a Model SL-0-W are: Cooler Pressure Drops at 600 = 0 ft water Condenser Pressure Drops at 50 = 6.5 ft water

7 7 SELECTION EXAMPLES SAMPLES SELECTION (Air Cooler Condenser) Given: Chill 35 gpm of water from 5 F to F (0 F Range) at 0 F condensing temperature. Find: Unit actual capacity Unit model and size KW Condenser heat rejection Cooler water pressure drops. Capacity (): =. Select Model: From the ratings, a Model SL- 0-A (TABLE 6) with an actual capacity of 35.6 Tons with = 6. is selected. 3.The corresponding KW can be calculated accord- ing to the following relation: KW = x 0.7 = 6. x 0.7 =.. Condenser Heat Rejection: From TABLE 6, the heat rejection for SL- 0-A can be read as Cooler Water Pressure Drop: From FIGURE 3, the cooler water pressure drop for the selected model at 35 gpm can be determined as 7. ft of water. TO SELECT REMOTE AIR OLED SEE SARAVEL AIR OLED S CATALOG NO

8 RATINGS SINGLE MPRESSOR MODELS TABLE 3. OLED - SL-50-W TABLE. AIR OLED - SL-50-A HEAT REJECTION

9 9 RATINGS SINGLE MPRESSOR MODELS TABLE 5. OLED - SL-75-W TABLE 6. AIR OLED - SL-75-A HEAT REJECTION

10 RATINGS SINGLE MPRESSOR MODELS 0 TABLE 7. OLED - SL-90-W TABLE. AIR OLED - SL-90-A HEAT REJECTION

11 RATINGS SINGLE MPRESSOR MODELS TABLE 9. OLED - SL--W TABLE 0. AIR OLED - SL--A HEAT REJECTION

12 RATINGS SINGLE MPRESSOR MODELS TABLE. OLED - SL-0-W TABLE. AIR OLED - SL-0-A HEAT REJECTION

13 3 RATINGS SINGLE MPRESSOR MODELS TABLE 3. OLED - SL-50-W TABLE. AIR OLED - SL-50-A HEAT REJECTION

14 SINGLE MPRESSOR PRESSURE DROPS PRESSURE DROP FLOW FIGURE PRESSURE DROP FLOW FIGURE

15 5 TABLE 5. NDENS TABLE 6. NDENS TEMP RA SER F LE W TE AIR OLE SER F LE W TE ATINGS OOLRD SL AVING EMP. F ED SL- AVING EMP. F S TWO -0-W A O MP PRESSO WA WA OR MOD ATER ATER DELS C H R M M PD (f HEAT REJECTION ft)

16 TABLE 7. NDENS TABLE. NDENS TEMP RA SER LE W TE AIR OLE SER F LE W TE ATINGS OOLED SL AVING EMP. F ED SL- AVING EMP. F TWO -00-W A MPR RESSO WA WA R MOD ATER ATER ELS C H R M 6 M PD (f HEAT REJECTION ft)

17 7 RATINGS TWO MPRESSOR MODELS TABLE 9. OLED SL-0-W TABLE 0. AIR OLED SL-0-A HEAT REJECTION

18 TABLE. NDENS TABLE. NDENS TEMP R SER LE W TE AIR OLE SER F LE W TE RATINGS OOLED SL AVING EMP. F ED SL-3 AVING EMP. F S TWO -300-W A O MP PRESSO WA WA OR MOD ATER ATER DELS C H R M M PD (f HEAT REJECTION ft)

19 9 TWO MPRESSORSS MODELS PRESSURE DROPS PRESSURE DROP FLOW FIGURE 3 FLOW FIGURE

20 TABLE 3. NDENS TABLE. NDENS TEMP RAT SER F LE W TE AIR OLE SER F LE W TE TINGS OOLED SL AVING EMP. F ED SL-3 AVING EMP. F FOUR -360-W A R MP PRESSO WA WA OR MOD ATER ATER DELS C H R M 0 M PD (f HEAT REJECTION ft)

21 TABLE 5. NDENS TABLE 6. NDENS TEMP RA SER F LE W TE AIR OLE SER F LE W TE ATINGS OOLED SL AVING EMP. F ED SL- EAVING EMP. F FOUR -00-W A R MP PRESSO WA WA OR MOD ATER ATER DELS C H R M M PD (f HEAT REJECTION ft)

22 TABLE 7. NDENS TABLE. NDENS TEMP RAT SER F LE W TE AIR OLE SER F LE W TE TINGS OOLED SL AVING EMP. F ED SL- AVING EMP. F FOUR -0-W A R MP PRESSO WA WA OR MOD ATER ATER DELS C H R M M PD (f HEAT REJECTION ft)

23 3 RATINGS FOUR MPRESSOR MODELS TABLE 9. OLED SL-600-W TABLE 30. AIR OLED SL-600-A TEMP. F HEAT REJECTION

24 FOUR MPRESSORS PRESSU URE DROPS PRESSURE DROP FLOW FIGURE 5 PRESSURE DROP FLOW FIGURE 6

25 5 DIMENSION-SINGLE MPRESSOR MODELS TABLE 3. OLED MODEL A SL- 50 w 3600 SL- 75 w 3600 SL- 90 w 3600 SL- -w 3600 SL- 0-w 3600 SL- 50-w B C D E F G H L M N P 750 3" 750 " 750 " 750 5" 50 5" 950 5" TABLE 3. AIR OLED MODEL A B E F G L M N P R S SL- 50 A SL- 75 A SL- 90 A SL- -A SL- 0-A SL- 50-A NOTES:. All dimensions in mm except as specified.. Roughing in dimensions. 3. All dimensions are subject to change without notice " " " " " " /" /" /" /" 3/" 5/" 3/" 5/" 5/" 3 /" 5/" 3 /"

26 DIMENSION-TOW MPRESSOR MODELS 6 TABLE 33. OLED MODEL A B C D E F G H L M N P No. x Q SL-0-w SL-00-w 00 SL-0-w 00 SL-300-w " " 900 6" " TABLE 3. AIR OLED MODEL SL-0-A SL-00-A SL-0-A SL-300-A A B C D E F G L NOTES:. All dimensions in mm except as specified.. Roughing in dimensions. 3. All dimensions are subject to change without notice. M N P No. x R No. x S " x 3/" x 5/" " x 3/" x 5/" " x 5/" x 3 /" " x 5/" x 3 /"

27 7 DIMENSION-FOUR MPRESSOR MODELS TABLE 35. OLED MODEL SL-360-w SL-00-w SL-0-w SL-600-w A B C D E F G H L M N P No. x Q " x 5" " x 5" " x 5" " x 6" TABLE 36. AIR OLED MODEL SL-360-w SL-00-w SL-0-w SL-600-w A B E F NOTES:. All dimensions in mm except as specified.. Roughing in dimensions. 3. All dimensions are subject to change without notice. G L M N P No. x R No. x S " x /" x 5/" " x /" x 5/" " x 5/" x 3 /" " x 5/" x 3 /"

28 ENGINEERING SPECIFICATIONS Furnish and install where indicated on the plans SARAVEL Model SL... packaged liquid chiller(s). The unit(s) shall have a capacity of... when cooling of water from... F to... F when supplied with... of... F condenser water. The water pressure drops shall not exceed Feet of water through the cooler and.... Feed of water through the condenser. GENERAL The packaged liquid chiller(s) shall be completely factory assembled ncluding all interconnecting refrigerant piping and internal wiring of controls and motor starting equipment. Exposed surfaces shall be painted with primer- shall be finisher prior to shipment. The unit shipped with oil charge and operating refrigerant charge. The unit shall include the following: EVAPORATOR The evaporator shall be direct expansion type with refrigerant in the tubes and liquid to be chilled in the shell. The evaporator shall be insulated with 9mm thick, flexible, closed cell fire retardant rubber foam sheets to prevent condensation and provide vapor seal. The evaporator shall have a design working pressure of 350 psig (water side) and 300 psig (refrigerant side) and be constructed and tested in accordance with ASME-Division VIII Unfired Pressure Vessel Code requirements. The condenser shall be cleanable, shell and tube type, with integrally finned copper tubes and removable steel heads. The condenser shall have a design working pressure of 300 psig (water side) and 350 psig (refrigerant side), and be constructed and tested in accordance with ASME Unfired Pressure Vessel Code requirements. The condenser shall be equipped with refrigerant relief valve. MOTOR-M MPRESSORR The compressor(s) shall be open type, multi- shall cylinder, reciprocating unit. The compressor have a forced fed lubrication system and shall include suction strainer, crankcase oil level sight glass, oil strainer, crankcase oil heater, back seating seal cap type suction and discharge valves. The pole,0 RPM electric motor shall be protected with inherent all-phase overload protection. The motor shalll operate on 30 Volts, 3 Phase, 50 Cycles. CAPACITY NTROL SYSTEM The capacity control system shall modulate compressor capacity automatically up to stages. Un loader shall be operated by an oil pressuree actuated piston vie a solenoid valve and a multistage thermostat responsive to load conditions. NTROL CENTER All motor starting equipment shall be factory wired and mounted in a fully enclosed metal cabinet complete with lock. Controls shall be wired to a terminal block suitably marked for field interlock connections. The safety and operating controls to be furnished shall include on-off, high and low pressure cut-outs, oil pressure safety cut-out, motor overload protection, water temperaturee thermostat, flow switch, and anti freeze control. Controls shall be for 0V. Motor starter shall be Star Delta. UNIT BASE The unit base shall be integral one-piece steel base. Compressor, drive motor, and vessels shall be solidly mounted on rigid, structural steel base to eliminate vibration and alignment problem REFRIGERANT CIRCUIT The refrigerant circuit shall be complete with insulated suction line and liquid line including shut-off valve with charging connection, filter- thermal drier, sight glass, solenoid valve and expansion valve.

29 9 NVERSION TABLES TABLE 37. UNITS NVERSION TABLE Physical Quantity Area Density Energy Energy flux Force Heat-transfer Coefficient Length Mass Power Volume Volume flow rate Temperature Measurement ft² lbm /ft³ 6.0 Btu(IT) 055. Btu 05. cal(it).6 Cal. Btu/(h.ft²) cal/(s.cm²) E+0 Kgf Lbf. Btu/(h.ft². F) 5.67 cal/(s.cm². c) ft in mi (US) lbm slugs Btu/h cal/s hp (550ft.lb f /s) Pressure Specific heat Temperature atm lbf /in² Btu/( lbm. F) cal/(g. C) (see below) Btu..in/(h.ft². F) 0.3 Thermal Btu/(h.ft. F).796 conductivity cal/(s.cm. C). Velocity ft/s 0.30 Centipoises 0.00 Viscosity lbm /(h.ft).33e+0 lbm /(s.ft). lbf. s/ft² Viscosity, Kinematic centistokes ft²/s ft³ gal (US liquid) ft³/min gal (US liquid)/min Multiply By E E E E- 05 T(K) = T( C) T(K) =T( R) /. T(K) =[T( F) ] /. T( C) = [T( F) 3] /. To Obtain or To Convert m² kg/m³ J J J J W/m² W/m² N N W/(m².K) W/(m².K) m m m kg kg W W W Pa Pa kj/(kg.k) kj/(kg.k) W/(m.K) W/(m.K) W/(m.K) m/s Pa.s Pa.s Pa.s Pa.s m²/s m²/s m³ m³ m³/s m³/s DERIVATIO N OF NSTRANT USED IN AIR NDITION NING PROBLEMS Air Constant of. C.F.M. x. = lbs. air/ /hr. (std.air) C.F.M. x 60 = cu. ft./hr. (C.F.H) 3.5 cu. ft = lb. Measured at 70 F 50% rel.hum (Std. air for cooling problems when condensing moisture) Air Constantt of.07 C.F.M. x.07 x Temperature rise=b.t.u./hr.(70 Fa C.F.M. x 60 = C.F.H. 3.3 cu. ft. = lb. Dry air at 70 F Sp. Ht. of air = 0.5 Btu/lbm. F B.T.U. = lbs. per hr temperature rise B.T.U. = CFM temperature Rise = CFM.07 temperature rise air)

30 LIQUID CHILLERS SELECTION FORM 30 Project Name: Project Place: Estimated by: Client: Working Pressure: Altitude: Date: / / Chilled Water Flow = Estimated Tonnage = x ( T = F) x 500 = 0 Selected Tonnage : Selected model : Actual Capacity : Power Input : EWT = LWT = Water Flow Water P.D. THR * Water Coo F; T= F = = = In/Out Connection = No. of Condensers : G.P.M. Ref. Tons Unit (s) Qty..: Ref. Tons. KW Ref. Tons. oled Air Cooled F Condensing Temp. = F Ambient Air Temp. = F Ft. Tons THR AHR ACF = = = / Inches Ref. Liq. Out = Inches Discharge In = Inches FOULING FACTOR EFFECT Sens. Heat = Total Heat = Estimated = Ref. Tons. Tonnage UNIT TYPE Water Cooled Air Cooled EWT = F, LWT= F T = F Water Flow Water P.D. In/Out Conn = = = / G.P.M Ft. Inches Water Volume = Liter Factors Fouling Factor (hr. ft ². F/BTU) Condenser Cooler Correction Factor (Tons) Correction Factor (KW) Corrected Tonnage = x x = Ref. Tons. = Corrected Power = x x = KW. Average Full Load = ( / ) x = KW. Total Heat Reject. = + ( x 0. ) = Ref. Tons. = PHYSICAL DATA Total Length Tube = cm. ; Total Width = cm. ; Total Height = Removal Space = cm. ; Unit Operating Weight = Kg. No. of Compressors = ; Normal Comp. Motor Power (each) = Hp. Total Elect. Demand = Liquid Chiller Total KW + Remote Air cooled Cond. KW T.E.D. = KW + KW = KW Notes: cm. * THR = Total Heat Reject. (Condenser G.P.M. x T x 500) / 0 = Ref. Tons. THR = Total Heat Reject. (Cooler Cap. in Tons) + (KW x 0.) = Ref. Tons. AHR = Actual Heat Rejection = THR x Altitude Correction Factor Based on SARAVEL LIQUID CHILLERS UNIT " CAT. NO.... (Tehran / Iran)

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32 SARAVEL RP. Mar. 00 Manufacturer reserves the right to make changes in design and construction, without notice. (Head Office) No. 3, North Sheikh Bahai Avenue, Tehran 997, IRAN Tel: (+9-) 09 (6 lines) Fax: (+9-) 090 Address: Web Site: