Heat Exchangers. Heat exchangers shall be plate-and-frame type. Frames shall be carbon steel with type 304 stainless steel plates. Minimum design operating pressure shall be 150 psi. Heat exchanger shall be designed for N+1 capacity (2 at 100 percent).
Heat Exchangers. Heat exchangers shall be provided as components of mechanical equipment packages and may be shell-and-tube or plate type. Heat exchangers shall be designed in accordance with Tubular Exchanger Manufacturers Association (TEMA) or manufacturer’s standards. Fouling factors shall be specified in accordance with TEMA or HEI. Thermal relief valves shall be provided for heat exchangers as required.
Heat Exchangers. Provide and install four (4) combination heat exchangers, Sperre Pleat Cooler, DN 100-3-2-L or equal, one (1) for each propulsion engine. The heat exchangers shall be universal-cooler type units which provide separate jacket water and after cooler heat exchanger circuits served by common seawater cooling stream. The heat exchangers shall be constructed with multiple gasketed elements mounted on a common steel base frame. Each element shall have pleated titanium heat transfer surfaces mounted in a composite frame. Heat exchangers shall be delivered with a matching counter-flange for each connection, and ABS certification. The SSDG, VSP or approved equal, and combining gear heat exchangers shall be provided with the associated equipment. The tempered water heat exchangers are described in Section 530. All seawater heat exchangers shall be sized for operation in 85°F seawater. 800 805 810 815 820 825 830 835 256.4 Jacket Water Heaters Install forced circulation block heaters for the SSDGs and the emergency generator. Block heaters shall be Hotstart CSM 10301-000 or equal. Each heater shall come complete with thermocouples, pumps and all required controls. Install heaters in accordance with the manufacturer's recommendations. Interlock each heater with the engine it serves so the heater is disabled when the engine is running.
Heat Exchangers. For Seller’s non-separated combustion Gas-Fired Unit Heaters BUYER’S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR REPLACEMENT AT THE FACTORY OF SELLER, ANY HEAT EXCHANGER WHICH SHALL, WITHIN TEN YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN TEN YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER, WITHIN TEN YEARS FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN ONE HUNDRED TWENTY-SIX MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST, BE RETURNED TO SELLER WITH TRANSPORTATION CHARGES PREPAID AND WHICH THE EXAMINATION OF SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE; EXCEPT THAT WHEN THE PRODUCT IS TO BE USED BY BUYER AS A COMPONENT PART OF EQUIPMENT MANUFACTURED BY BUYER, BUYER’S REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM SELLER. FOR GAS-FIRED PRODUCTS INSTALLED IN HIGH HUMIDITY APPLICATIONS AND UTILIZING STAINLESS STEEL HEAT EXCHANGERS, BUYER’S REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO TEN YEARS FROM DATE OF SHIPMENT FROM SELLER. For Seller's Low Intensity Gas-Fired Infrared Heaters BUYER'S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR REPLACEMENT AT THE FACTORY OF SELLER, ANY HEAT EXCHANGER WHICH SHALL, WITHIN FIVE YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN FIVE YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER, WITHIN FIVE YEARS FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN 66 MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST, BE RETURNED TO SELLER WITH TRANSPORTATION CHARGES PREPAID AND WHICH THE EXAMINATION OF SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE; EXCEPT THAT WHEN THE PRODUCT IS TO BE USED BY BUYER AS A COMPONENT PART OF EQUIPMENT MANUFACTURED BY BUYER, BUYER'S REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM SELLER. Heat Exchanger (Condensers) for all Seller’s products except non- separated combustion Gas-Fired Unit Heaters and Infrared Heaters, all Burners except Infrared Heaters, and Sheet Metal for all Seller's products BUYER’S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR REPLACEMENT AT THE FACTORY OF SELLER, ANY HEAT EXCHANGER (CONDENSER) OR BURNER WHICH SHALL, WITHIN ONE YEAR FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY ...
Heat Exchangers. Remove corroded six ½” high point vent nipples, valves, and 180 degree elbows in each of the six (6) pipes connected to the top ports of the Main Sea Water Heat Exchangers located in the lower level of the Heat Exchanger Room. Inspect the existing welded threaded connections and provide a CFR of their condition. Provide and install new ½” 316L Stainless Steel nipples, valves, elbows, in each of the six (6) Heat Exchangers piping connections. This work must be performed while the vessel in on drydock.
Heat Exchangers i. Fan coil units
Heat Exchangers. The Work includes preparation of data sheets, material requisitions, bid evaluation and review of Supplier engineering documents and Drawings for the heat exchangers. The liquefaction unit is designed around the Main Cryogenic Heat Exchanger (MCHE), which is designed and fabricated by Air Products and Chemicals, Inc. (APCI). Contractor shall coordinate activities with APCI for the design reviews and testing of the MCHE. In addition to the above, the Contractor shall also be responsible for the interface, coordination, transportation, installation, and insulation of the MCHE. The initial pre-cooldown and final cooldown of the MCHE shall be conducted by the Contractor in conjunction with the APCI start-up representatives in accordance with Appendix W. The engineering, design and fabrication of shell and tube, brazed aluminum and air-cooled heat exchangers shall be in accordance with the relevant project Specifications and Applicable Codes and Standards. Contractor shall verify and confirm the thermal and mechanical design of each piece of equipment with the responsible Supplier of each shell and tube heat exchanger, which shall include a vibration analysis. Contractor shall review electric heaters and heater system designs from the applicable Suppliers to confirm the thermal and mechanical designs. Additionally, functional testing of the local control system will also be required. All electrical Drawings and wiring diagrams are to be submitted by the applicable Suppliers to Contractor for review and approval. Brazed aluminum core exchangers are provided with aluminum flanges. Insulation block made from Micarta or Owner approved equivalent shall be used to insulate core from structural steel. Contractor shall verify that the design conditions shown on the applicable Supplier’s data sheet are in accordance with the process data for each stream. The brazed aluminum heat exchanger is to be built in accordance with ALPEMA requirements. The fuel gas heater designs, as submitted by the applicable Supplier, shall be checked for process condition accuracy. Contractor is responsible for all Drawings from the applicable Supplier, including controls schematic and power supply. All anchor bolts required for the installation of the heat exchangers shall be sized by Contractor to safely handle weight, pullout, thermal, seismic and wind loadings and any other applied loads. The required bolts are to be provided by Contractor.
Heat Exchangers. Although heat exchangers are very reliable, at least two units (each designed for approximately 60% load capacity) are recommended for space heating. One heat exchanger can carry the full load for 80-85% of the heating season, but if both exchangers are operating continually, the return temperature can be lowered. Heat exchangers should be connected in parallel for uniform load. Heat exchangers selections must be brazed plate or plate and frame and compatible with the requirements of the district heating system and the needs of the building.
