SECTION 15755

HEAT EXCHANGERS

PART 1 GENERAL

SECTION INCLUDES

Shell and tube type heat exchangers.

Plate type heat exchangers.

Accessories and trim.

RELATED SECTIONS

Section 15510 - Hydronic Piping.

Section 15515 - Hydronic Specialties.

Section 15520 - Steam and Steam Condensate Piping.

Section 15525 - Steam and Steam Condensate Specialties.

Section 15952 - Controls and Instrumentation.

REFERENCES

ANSI/ASME - Boilers and Pressure Vessels Code.

REGULATORY REQUIREMENTS

Conform to Section 8D of the ANSI/ASME Boilers and Pressure Vessels Code for manufacture of tubular heat exchangers and heat exchanger shells.

SUBMITTALS

Submit [shop drawings and] product data under provisions of Section [01300.] [01340.]

Submit [shop drawings and] product data for manufactured products and assemblies required for this project.

Indicate dimensions, locations, and size of tappings and performance data.

Submit manufacturer's installation instructions under provisions of Section [01300.] [01340.]

Submit manufacturer's certificate under provisions of Section [01400] [01405] that heat exchangers meet or exceed specified requirements.

Submit design data in sufficient detail to verify that heat exchangers meet or exceed specified requirements.

Submit test reports of tube bundle pressure tests.

OPERATION AND MAINTENANCE DATA

Submit operation and maintenance data under provisions of Section [01700.] [01730.]

Include start up and shut down instructions, assembly drawings, and spare parts lists.

DELIVERY, STORAGE, AND HANDLING

Deliver products to site under provisions of Section [01600.] [01610.]

Store and protect products under provisions of Section [01600.] [01620.]

Protect internals from entry of foreign material by temporary caps on flanged openings.

EXTRA MATERIALS

Provide [two] [_____] sets of replacement gaskets under provisions of Section [01700.] [01750.]

Provide [one] [_____] set of wrenches for disassembly of plate type heat exchangers.

PART 2 PRODUCTS

MANUFACTURERS - SHELL AND TUBE TYPE HEAT EXCHANGERS

[____________________________________________.]

[____________________________________________.]

[____________________________________________.]

Substitutions: Under provisions of Section [01600.] [01630.]

SHELL AND TUBE TYPE HEAT EXCHANGER

Tubes: U-tube type with 3/4 inch (19 mm) OD minimum seamless [copper] [stainless steel] [cupro-mickel] [naval brass] [steel] tubes suitable for [125] [_____] psig ([862] [_____] kPa) working pressure.

****** [OR] ******

Tubes: Straight tube type with 3/4 inch (19 mm) OD minimum sealmess [copper] [stainless steel] [cupro-nickel] [naval brass] [steel] tubes suitable for [125] [_____] psig ([862] [_____] kPa) working pressure.

****** [OR] ******

Tubes: Straight tube type with enahnced (spiral surface) copper tubes suitable for 150 psig (1 040 kPa) working pressure.

Shell: [Steel] [Stainless steel] [pipe] with threaded or flanged piping connections and necessary tappings, steel saddle and attaching U-bolts, prime coated.

Heads: [Cast iron or fabricated steel] [Cast brass] [Fabricated stainless steel] with [steel or bronze] [rolled naval brass] [stainless steel] [glass filled polypropylene] tube sheets, threaded or flanged for piping connections.

Water Chamber and Tube Bundle: Removable for inspection and cleaning.

Design: Heating fluid in shell and heated fluid in tubes.

Performance: [_____] Btu/hr ([_____] kw) heat transfer, to heat [_____] gpm ([_____] L/sec) from [_____] to [_____] degrees F ([_____] to [_____] degrees C); with [[_____] psig ([_____] kPa) steam;] [[_____] gpm ([_____] L/sec) hot water at [_____] degrees F ([_____] degrees C);] fouling factors [_____] shell, [_____] tubes; pressure drop [_____] psig ([_____] kPa) shell, [_____] psig ([_____] kPa) tubes; working pressure [_____] psig ([_____] kPa).

MANUFACTURERS - PLATE TYPE HEAT EXCHANGERS

[____________________________________________.]

[____________________________________________.]

[____________________________________________.]

Substitutions: Under provisions of Section [01600.] [01630.]

PLATE AND FRAME TYPE HEAT EXCHANGER

Frames: Carbon steel with baked epoxy enamel paint, [stainless steel] side bolts and shroud.

Plates: [Stainless steel Type 304.] [Stainless steel Type 316.] [Titanium.] [Incoloy 825.] [Hastelloy.] [__________.]

Gaskets: [Nitrile rubber.] [Ethylene propylene diene monomer (EPDM).] [Viton.] [Neoprene.] [Hypalon.] [Resin-cured butyl rubber.] [__________.]

Nozzles: [150] [300] psig ASA rubber rated flange type.

Performance: [_____] Btu/hr ([_____] kw) heat transfer, to heat [_____] gpm ([_____] L/sec) from [_____] to [_____] degrees F ([_____] to [_____] degrees C); with [[_____] psig ([_____] kPa) steam;] [[_____] gpm ([_____] L/sec) hot water at [_____] degrees F ([_____] degrees C);] fouling factors [_____] hot side, [_____] cold side; pressure drop [_____] psig ([_____] kPa) hot side, [_____] psig ([_____] kPa) cold side.

PART 3 EXECUTION

INSTALLATION

Install in accordance with manufacturer's instructions.

Install to permit removal of [tube bundle] [plates] with minimum disturbance to installed equipment and piping.

Support heat exchangers on welded steel pipe and angle floor stand.

Pitch shell to completely drain condensate.

Pipe relief valves to nearest floor drain.

Pipe drain valves to nearest floor drain.

STEAM TO WATER HEAT EXCHANGER TRIM

Shell: Pressure gage tapping with pigtail siphon, vacuum breaker.

Water Inlet: Thermometer well, pressure gage tapping, valved drain.

Water Outlet: Thermometer well for temperature regulator sensor, ASME rated pressure and temperature relief valve, thermometer well, pressure gage tapping.

WATER TO WATER HEAT EXCHANGER TRIM

Water Inlets and Outlets: Thermometer wells, pressure gage tappings.

Heated Water Outlet: Thermometer well for temperature regulator sensor, ASME rated pressure and temperature relief valve, valved drain.

SCHEDULE

Drawing_Code	HE-1	HE-2	HE-3

Location

Service

Manufacturer

Model Number

Diameter or Width

Length

Transfer Area

Heating Media

Type

Number of Passes

Flow Rate

Entering Pressure

Pressure Drip

Fouling Factor

Working Pressure

Heated Media

Type

Flow Rate

Pressure Drop

Entering Temperature

Leaving Temperature

Fouling Factor

Working Pressure

END OF SECTION