41--Evaporative Cooling Towers

The Naval Air Warfare Center Weapons Division is planning to procure one (1) Evaporative Cooling Tower System on a full and open competition basis using FAR 13.5 Test Program for Certain Commercial Items. Specifications for the Evaporative Cooling Tower System are as follows: Performance requirements for the 1 Evaporative Cooling Tower System shall meet or exceed the following requirements and contractor shall provide technical documentation proving that the system meets each requirement: 3.1 Tower Specifications. 3.1.1 The contractor shall provide two (2) independent induced draft cooling towers capable of cooling 375 GPM from 95F to 85F with a 78F entering wet bulb temperature; 3.1.2 Minimum structural specification: re-enforced fiberglass construction; 3.1.3 Minimum fan motor specification: permanently lubricated direct drive fan motor;3.1.4 Stainless steel fan motor support and fasteners;3.1.5 Stainless steel fan guard;3.1.6 Stainless steel outlet strainer;3.1.7 Automatic water make-up float valve;3.1.8 Basin equalization connection;3.1.9 Basin heater package with two 6 kW heaters, control thermostat and low level safety;3.1.10 PVC fill, drift eliminators, and air inlet louvers.3.1.11 High efficiency fiberglass reinforced polypropylene fan blades with cast aluminum alloy fan hub;3.1.12 10 year parts warranty (fiberglass casing and basin);3.1.13 5 year warranty all other parts;3.1.14 1 year labor warranty when purchased as part of a system. 3.2 Cooling Tower Pump Deck requirements:3.2.1 Solid plate steel support deck;3.2.2 One 15 HP, ODP cooling tower pump motor designed for 375 GPM @ 29 PSI;3.2.3 6-inch suction and discharge butterfly isolation valves;3.2.4 6-inch discharge check valve;3.2.5 Discharge pressure gauge;3.2.6 One 15 HP, ODP emergency standby pump motor designed for 375 GPM @ 29 PSI;3.2.7 6-inch suction and discharge butterfly isolation valves;3.2.8 6-inch discharge check valve;3.2.9 Discharge pressure gauge;3.2.10 One 6-inch two pump suction manifold;3.2.11 One 6-inch two pump discharge manifold;3.2.12 One Nema 12 control panel mounted to deck and wired to pumps;3.2.13 Microprocessor controller with digital temperature display and high temperature alarm;3.2.14 One primary cooling tower pump starter with overloads;3.2.15 One emergency standby cooling tower pump starter with overloads;3.2.16 Cooling tower fan #1 motor starters with overloads;3.2.17 Cooling tower fan #2 motor starter with overloads;3.2.18 Basin heater starters, overloads and operating controls;3.2.19 Cooling tower pump low pressure alarm;3.2.20 Alarm horn and silence switch. 3.3 Tower Circuit Filtration minimum requirements: 3.3.1 Stainless steel filter vessel;3.3.2 Stainless steel conical 60 mesh strainer screen;3.3.3 Standby stainless steel conical 60 mesh strainer screen (spare);3.3.4 4-inch inlet and outlet flange connections;3.3.5 Inlet and outlet pressure gauges. 3.4. Water Cooled Chiller System minimum requirements: 3.4.1 180 tons of cooling;3.4.2 245 GPM of water to be cooled from 75F to 58F;3.4.3 85F condenser water;3.4.4 Mechanical Requirements:3.4.4.1 Two 90-ton centrifugal compressors;3.4.4.2 Frictionless magnetic bearings;3.4.4.3 Oil free refrigerant system;3.4.4.4 R134a refrigerant;3.4.4.5 74 dB(A) sound level at 1 meter under full load operation;3.4.4.6 Integrated variable speed drive and inlet guide vane actuation for capacity control;3.4.4.7 Two completely independent refrigeration circuits;3.4.4.8 Two water cooled shell & tube condensers with removable heads;3.4.4.9 Two electronic condenser water regulating valves;3.4.4.10 Two brazed plate evaporators;3.4.4.11 Two liquid line refrigerant filter dryers with removable cores;3.4.4.12 Two electronic expansion valves;3.4.4.13 PVC supply and return condenser water manifolds with isolation valves;3.4.4.14 PVC supply and return evaporator water manifolds with isolation valves. 3.4.5 Minimum Electrical Requirements:3.4.5.1 NEMA-12 control panel mounted and wired to compressors and sensors;3.4.5.2 Minimum 4 VDC control circuit;3.4.5.3 Operator Control Station PLC controller (integrated Intel based microprocessor controller, operator interface, solid state input/output relays);3.4.5.4 Two line, 20 character alphanumeric display;3.4.5.5 Digital set point and temperature deviation alarm adjustment with password protection;3.4.5.6 Digital display of process water supply and return temperatures;3.4.5.7 Digital display of compressor anti-cycle timers;3.4.5.8 Digital display of compressor running hours;3.4.5.9 Solid state safety interlocks for each circuit including low flow, high refrigerant pressure, low refrigerant pressure, and compressor fault;3.4.5.10 System faults for high and low temperature deviation alarms and probe fault alarm;3.4.5.11 Alarm horn with silence keypad. 3.4.6 Remote Diagnostic Computer requirements: 3.4.6.1 PC computer CPU with Internet card (monitor, keyboard, and mouse not included);3.4.6.2 Interconnecting cables for connecting the CPU to the chiller;3.4.6.3 Allows for on-line troubleshooting and software adjustment from the factory;3.4.6.4 Provides monitoring of refrigerant pressures and temperatures, water temperatures, voltage, amp draw, kW demand, alarm history and captured data at time of alarm condition, demand profile with kW usage.;3.4.6.5 Reference the Connectivity Requirements for TC Series Remote Monitoring for IT requirements to connect the remote monitoring system to the internet. 3.4.6 Warranty:3.4.6.1 One year service policy covering all parts and labor;3.4.6.2 5-year compressor part warranty. 3.5 Chilled Water Pump/Reservoir System minimum requirements:3.5.1 Mechanical requirements:3.5.1.1 1,300-gallon stainless steel reservoir;3.5.1.2 One 25 HP, ODP process pump designed for 245 GPM at 70 PSI;3.5.1.3 One 25 HP, ODP process standby pump designed for 245 GPM at 70 PSI;3.5.1.4 One 10 HP, ODP cooling tower pump designed for 245 GPM at 35 PSI;3.5.1.5 One 10 HP, ODP cooling tower standby pump designed for 245 GPM at 35 PSI;3.5.1.6 6-inch suction and discharge butterfly valves for each pump;3.5.1.7 6-inch discharge check valves for each pump3.5.1.8 Discharge pressure gauge for each pump;3.5.1.9 6-inch 2- pump process pump suction manifold3.5.1.10 6-inch 2- pump tower pump discharge manifold3.5.1.11 Reservoir divider (hot & cold compartments)3.5.1.12 Reservoir insulation (closed cell);3.5.1.13 Mechanical make-up water float valve;3.5.1.14 Water-level sight glass;3.5.1.15 NEMA-12 control panel;3.5.1.16 Microprocessor controller with digital temperature display and high temperature alarm;3.5.1.17 One primary process pump starter with overload;3.5.1.18 One emergency standby pump starter with overload;3.5.1.19 One primary chiller pump starter with overload;3.5.1.20 One emergency standby chiller pump starter with overload;3.5.1.21 Control panel mounted to pump deck and wired to pumps and sensors;3.5.1.22 Low water level alarm;3.5.1.23 Process pump low pressure alarm;3.5.1.24 Chiller pump low pressure alarm;3.5.1.25 Alarm horn and silence switch. 3.5.2 Remote Control Center:3.5.2.1 Nema 12 control panel;3.5.2.2 Microprocessor system controller with digital temperature display;3.5.2.3 Remote on/off control of system;3.5.2.4 Remote system temperature control;3.5.2.5 Alarm warning light;3.5.2.6 Automatic pump switch over;3.5.2.7 Automatic fan switch over. Note: Field communication-wiring requirements must be provided by contractor. Sources interested in this procurement should note that the Point of Contact (POC) is Tara Vasquez. Commander, Code 210000D, Attn: Tara M. Vasquez, 429 E. Bowen Road Stop 4015, Naval Air Warfare Center Weapons Division, China Lake, CA 93555-6108; fax +1 (555) 000-0000.; or by electronic mail to contact@example.gov. Interested parties can request a copy of the request for quotation. It is anticipated that the request for quotations will be released on 20 August 2008. Award is anticipated by 26 September 2008. Place of Performance =NAWCWD, China Lake, CA