This document is a DRAFT Technical Specification Sheet for a 20-Ton Industrial Water Chiller required by the Department of the Air Force Materiel Command Test Center. The chiller must have a minimum cooling capacity of 239,756 BTU/hr, be rated for continuous usage within an ambient temperature range of +14°F to +113°F, and use water as a medium with a minimum flow rate of 50 GPM. The chiller must have a self-contained 55-gallon stainless steel reservoir and be portable on a movable skid/frame. Electrical requirements are 460V, 3-phase, 60Hz with a maximum of 60 amps. The chiller must fit within the specified dimensions of 45" wide, 100" long/deep, and 90" height, and not exceed 1,650 lbs. This Technical Specification Sheet is associated with a Sources Sought Notice for the 20-Ton Industrial Water Chiller, which will be delivered to Arnold AFB in Tennessee.
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Technical Specification Sheet 20 Ton Industrial Water Chiller
1.
General & Operational Data/Specifications
a.
Must be rated for continuous usage
b.
Ambient working limits: Minimum requirements are +14 ᴼF through +113 ᴼF
c.
Cooling capacity (Capacity based on 45 ᴼF water outlet temp.: 10 ᴼF delta t @ 95 ᴼF ambient temperature):
i.
20 tons, minimum capacity
ii.
239,756 BTU/hr, minimum capacity
d.
Must be designed to use water as a medium
e.
Cooling Water flow rate: 50 gpm, minimum flow rate
f.
Head Pressure: 50 psi at a flow rate of 46 gal/min
g.
Refrigerant: Type/Qty: R410A
h.
Noise rating: Not to exceed 69 db at 10 ft
2.
Reservoir/Self-Contained Water Tank: `
a.
55 gal. minimum capacity
b.
Chiller is to only operate using water contained in reservoir/self-contained tank. This means an external water supply IS NOT required except to fill the reservoir/self-contained tank.
c.
Tank is to be stainless steel.
3.
Interfaces:
a.
Power Supply:
i.
Volts: 460V
ii.
Phase: 3
iii.
Hertz: 60
iv.
FLA: Maximum of 60 amps
b.
Fluid Connections
i.
System water supply: MPT 2”
ii.
System water return: MPT 2”
c.
Filling reservoir/self-contained tank with drain:
4.
Weight & Dimensions: System must fit within below dimensions. Note: Reservoir/Self-Contained water tank is to be included in these measurements
a.
Dry Weight: Not to exceed 1650 lbs
b.
Width: Not to exceed 45 inches
c.
Length/Depth: Not to exceed 100 inches
d.
Height: Not to exceed 90 inches
5.
Portability
a.
Portability must be maintained while meeting all requirements in this spec
b.
System must be self-contained on a movable skid/frame
c.
Skid/frame is to have lifting hole to allow forklift to move system
d.
Only items to be disconnected to allow system to be moved are:
i.
Power Source identified in 3.a.iv
ii.
Fluid connections identified in 3.b.i and 3.b.ii
e.
Drain reservoir/self-contained tank of water
6.
Clearance Spacing: The following states how much space must be provided between the system and an obstacle
a.
Side Clearances: Required clearance for any side of unit is not to exceed 6.5 ft
b.
Top Clearance: Required clearance for top of unit is not to exceed 10 ft
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