BUFFER TANKS. ASME Commercial Buffer Tanks

Transcription

1 BUFFER TNKS SME Commercial Buffer Tanks For Closed Thermal For Closed Water Loop Systems

2 BUFFER TNKS mtrol SME Buffer Tanks add capacity to non-potable, closed systems to help reduce cycling, improve temperature control and provide more consistent system operation. vailable for chilled water and hot water applications, these Buffer Tanks are all made in the US at our ISO 9001:2008 registered facilities. Chilled Water Buffer Tank CWBT Series Meets all SME Section VIII, Division I standards. vailable up to 1,040 gallons. Connections from 3" to 12". Internal baffle helps properly circulate water. Maximum Working Pressure: 125 or 150 psig. Maximum Operating Temperature: 450 F. How It Works Water enters the buffer tank and is diverted up and over the internal baffle to circulate the water and take full advantage of the tank volume. Typical Installation Internal Baffle BUFFER TNK CHILLER IR HNDLER Inlet Outlet OTHER VLVES ND CCESSORIES REQUIRED FOR INSTLLTION RE NOT SHOWN.

3 for Chilled and Hot Water Systems Hot Water Buffer Tank HWBT Series Meets all SME Section VIII, Division I standards. vailable in 2 or 4 port options. vailable up to 300 gallons. vailable in 2", 3" & 4" connections. Maximum Working Pressure: 125 or 150 psig. Maximum Operating Temperature: 450 F. How It Works Tank provides added capacity in high efficiency systems that incorporate small, modular, low-mass condensing boilers. 4-port tanks allow for primary / secondary flow through the vessel. This is usually required for systems with multiple small or low volume zones to maximize boiler efficiency and overall system performance. 2-port tanks are typically used in standard applications where all zones are similarly sized. System Flow > Boiler Flow System Flow = Boiler Flow System Flow < Boiler Flow SUPPLY SUPPLY SUPPLY RETURN RETURN RETURN Typical Installations 2 Port Installation 4 Port Installation

4 Sizing Hot Water Buffer Tanks For dding Capacity to Closed, Non-Potable Hot Water Systems Required Information Boiler Cycle Time (minutes) Minimum Boiler Output (BTU/hr) Minimum System Load (BTU/hr) Temperature Differential ( F) Example: Boiler Cycle Time: 5 minutes Minimum Boiler Output: 200,000 BTU s Minimum System Load: 25,000 BTU s Temperature Differential: = 10 F Pipe Size: 2" Relief Valve: 50 PSI 5 (200,000-25,000) = 175 Gallons* 10 x 500 Recommendation: HWBT *Select tank equal to or greater Manufacturer's recommended minimum boiler cycle time* Minutes Minimum Boiler Output ( - ) BTU/hr. BTU/hr. Temperature differential within tank*** F. Minimum System Load** x 500 * Typical 1-10 min. (use 5 if unknown). ** ssume to be 0 if no system load or if rate is unknown. *** Temperature differential can range from 5 to 25 F., 10 F is typical. = Buffer Tank Size Gallons B HWBT Series Specifications G D Model Number Ports Tank (Gallons) Connection Size Dimensions (Inches) B C D E F G H Shipping Weight (lbs.) HWBT ⅛ 55¾ HWBT ⅛ 55¾ PSI 150 PSI F E DRW OR BLOWDOWN HWBT ½ 24 21½ 45½ HWBT ⅛ 62½ 24 21½ 45½ HWBT ⅛ 80⅜ 30 32¼ 61¼ C HWBT ⅛ 80⅜ 30 32⅛ HWBT120-2/ / ⅛ 55¾ B HWBT120-2/ / ⅛ 55¾ HWBT120-3/ / ⅛ 55¾ G D F E C DRW OR BLOWDOWN H HWBT120-4/ / ⅛ 55¾ 16 15½ 44½ 27½ HWBT200-2/ / ½ 24 21½ 45½ 35½ HWBT200-2/ / ½ 24 21½ 45½ 35½ HWBT200-3/ / ⅛ 62½ 24 21½ 45½ 35½ HWBT200-4/ / ⅛ 62½ 24 21½ 45½ 35½ HWBT300-2/ / ⅛ 80⅜ 30 32¼ 61¼ 48¼ HWBT300-2/ / ⅛ 80⅜ 30 32⅛ 61 48⅛ HWBT300-3/ / ⅛ 80⅜ 30 32⅛ 61 48⅛ HWBT300-4/ / ⅛ 80⅜ 30 32⅛ 61 48⅛

5 Sizing Chilled Water Buffer Tanks For dding Capacity to Closed, Non-Potable Chilled Water Systems Required Information Total Chilled Capacity in Tons System per Ton* = C = V R ctual System in Gallons = V *Check with Chiller Manufacturer for specific requirements. Typical HVC chiller systems are between 3 and 6 gallons per ton. pplications where temperature accuracy is critical requires 6 to 10 gallons. ( Total Chilled Capacity Tons (C) System Per Ton ) System x - = Gallons/Ton (V R ) Gallons (V ) Buffer Tank Size Gallons Example: Total Chilled Capacity (C): 100 Tons System (V R ): 10 Gallons Per Ton ctual System (V ): 800 Gallons Pipe Size: 4" Relief Valve: 50 PSI (100 x 10) = 200 Gallons* Recommendation: CWBT *Select tank equal to or greater CWBT Series Specifications F D B E C INTERNL BFFLE DRW OR BLOWDOWN Model Number Tank (Gallons) Connection Size Dimensions (Inches) Shipping Weight (lbs.) B C D E F 125 PSI 150 PSI CWBT ⅛ 55¾ CWBT ⅛ 55¾ 16 15½ CWBT ⅛ 55¾ 16 16½ CWBT ⅛ 62⅜ 24 21½ CWBT ⅛ 62⅜ CWBT ⅛ 62⅜ CWBT ⅜ 30 32⅛ CWBT ⅜ 30 33⅛ CWBT ⅜ 30 34⅛ CWBT ½ 30 36½ 1,366 1,503 CWBT ½ 30 37½ 1,395 1,535 CWBT ½ 30 38½ 1,490 1,639 CWBT ⅛ ½ 2,707 2,978 CWBT ⅛ ½ 2,736 3,010 CWBT ⅛ ½ 2,771 3,048 CWBT ⅞ ,136 3,450 CWBT ⅞ ,171 3,488 CWBT ⅞ ,283 3,611

6 Made in the US From modest beginnings in founder Chet Kirk s garage to our current, state-of-the-art facilities, mtrol is still proudly manufacturing products in the US. Our talented, dedicated associates are committed to providing you with the highest quality, most reliable and best performing products on the market. ssociates at our West Warwick, Rhode Island manufacturing facility. dditional support materials include: Commercial and Industrial Products Catalog (MC 4401) Data Submittal Sheets (MC 4400) Engineering Handbook (MC 4402P) Product Sizing programs on Revit Files (MC 10205) utocd Files (MC 10029) 1400 Division Road, West Warwick, RI US T: F: MTROL Inc. MC (01/15)