Chiller_Specifications_Procurement-1.pdf

Attachment A

Specifications

Chiller to Produce -50 F Brine at 13 GPM and 8-10 Tons of Refrigeration

Background

The Heating, Ventilation, Air Conditioning, and Refrigeration (HVAC&R) Equipment Performance Group of the National Institute of Standards and Technology (NIST) researches the heat transfer performance of new alternative refrigerants. The focus of the work is to develop design tools for end-users to ensure the design of energy efficiency air-conditioning and heating equipment for buildings. The chiller will be used to supply cooling to the heat transfer test rigs located at NIST Gaithersburg, MD.

Deliverables Summary

Item Quantity Delivery Date

8-10 Ton Chiller 1 8 weeks after order date

Specification criteria – Minimum Requirements

The minimum specifications criteria for the Chiller is shown in the following tables.

Specification criteria: Chiller

Parameter Criteria

Documentation: 1. Operation manual

2.1. Calibration report

Evaporator Brine Temperature Range: -50 °F to -20 °F (Lower brine temperatures result in additional consideration)

Brine Temperature Stability at Setpoint: ±1 °F

Maximum Width to Fit in Elevator:Footprint to Fit in Elevator:

5 feet (this criteria can be exceeded if the vendor can ensure that the unit can be turned into the elevator space)5 feet square or less

Maximum Height to Fit in Elevator: 90 81 inches

Maximum Weight for Elevator: 6000 lbm

Electrical Controls For Remote Operation: Yes

Power: 480V/3PH/60HZ

Dynalene HFLO Brine Pump: At least 13 GPM and -50 °F and 90 psi

Electrical: Wired and Ready to operate

Oil Safety Control: Yes

Refrigerant Pressure Controls Yes

Attachment A

Minimum Warranty: 90 days

Pre-Wired Electrical System For Single Point Connection

Yes

Operate With 26 GPM Of 40°F Chiller Water Flow In Condenser

Yes

Capacity Control Via VFD Or Bypass Down To 30% Capacity

Yes

Quantity

Quantity needed: 1

Example model #s:

Manufacturer Model Model #

TEMPEST, Inc. LTAC-10

Acceptance/Inspection Criteria

The chiller will be tested by the HVAC&R group, and verified to deliver -50 F at ten eight tons of refrigeration. The item will be inspected at a government site.